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Under climate change, glacier recession and the loss of cold habitats are major threats to aquatic biodiversity. In mountain areas, streams originating from rock glaciers, called "icy seeps", may represent climate refugia for cold-adapted organisms, given the major persistence of cold waters from these landforms even in unfavourable climates. During late summer 2021, we investigated discharge, turbidity, water chemistry (major ions and trace elements), stable water isotopes (δ18O, δ2H), and macroinvertebrate communities of five rock glacier springs (icy seeps), five glacier springs (glacier springs) and five non-glacial springs (spring brooks) in catchments of the Eastern Italian Alps. In icy seeps, meltwater contribution to runoff (estimated with end-member mixing models) was intermediate between those of the other two spring types. Icy seeps had very cold waters (< 1.5 °C) that were enriched in trace elements, like glacier springs, whereas discharge and turbidity were low, like in spring brooks. Community composition, diversity, and species associations of icy seeps were strongly related to a gradient of chemical harshness (built using trace element concentrations), with less contaminated springs hosting communities like those dwelling in spring brooks. Like glacier springs, those icy seeps with the harshest water chemistry (particularly because of Ni concentrations) and higher meltwater contribution hosted species (e.g., Diamesa steinboecki) that are currently in decline due to glacier loss. This suggests a high conservation value for icy seeps. The protection of these habitats, nowadays overlooked, will be fundamental under the progressive warming and dry-out risk of alpine springs. [ABSTRACT FROM AUTHOR]

Seed-based restoration methods are increasingly recognized as a relevant tool contributing to halt and reverse the loss of seagrass meadows while providing genetic and evolutionary benefit for the conservation of these habitats. Ad-hoc protocols aimed at maximizing the survival of plantlets obtained from seeds in cultivation systems are therefore required. Previous trials of seedling culture of Posidonia oceanica , the dominant seagrass of the Mediterranean Sea, recorded up to 40% loss due to mould development. In this study we aim to (i) identify the putative causal agents of seed decay and (ii) test the efficacy of copper sulphate (0.2 and 2 ppm) and of tannin-based products derived from chestnut, tara and quebracho in reducing seed and seedling decay, while assessing possible phytotoxic effects on plant development. Halophytophthora lusitanica, H. thermoambigua and a putative new Halophytophtora species were identified as possible causal agents of seed loss. The antimicrobial agents (copper and tannins) reduced seed contamination by 20%, although copper sulphate at 2 ppm strongly inhibited the root growth. Among tannins, chestnut and tara reduced seeds germination by up to 75% and decreased shoot and root development, while quebracho showed a less severe phytotoxic effect. The use of copper sulphate at 0.2 ppm is therefore recommended to prevent P. oceanica seedling loss in culture facilities since it reduces seed contamination with no phytotoxic effects. Our results contribute to improving the seedling culture of one the key species of the Mediterranean Sea, increasing propagule availability for restoration purposes. [ABSTRACT FROM AUTHOR]

Understanding the factors influencing selection of nesting habitat may be important in the placement and management of Vulture Safe Zones (areas where vultures can safely breed) and in the development of successful conservation programmes. In this study, we analysed the anthropogenic, environmental and topographic factors affecting nest-site selection by Hooded Vultures Necrosyrtes monachus in West Africa. Habitat features of 106 nest locations and 138 randomly chosen points were compared to identify the preferred nesting habitat of this species at two locations (Garango and Mogtédo) in the Sudano–Sahelian area of central-eastern Burkina Faso. We used logistic regression to create candidate models, and an information–theoretic approach revealed a best-fit model showing that nests were located mostly in areas with more tall trees (height >10 m) and that certain tree species were favoured (i.e. Faidherbia albida, Kaya senegalensis, Parkia biglobosa and Tamarindus indica). Our results showed that Hooded Vultures prefer nest sites along watercourses, and nest sites that are close to one another in a clustered or loosely colonial fashion. This can likely be explained by the very low level of territoriality of this species and by a higher density of tall trees and favored tree species along watercourses. We suspect that habitat degradation, especially loss of nesting habitat, is a key threat that has probably hastened the decline of this species in West Africa. We recommend that conservationists and government officials engage with local communities to urgently identify and protect key nesting areas, and then integrate the Hooded Vulture's habitat requirements into land management practises to support the conservation of this Critically Endangered species. [ABSTRACT FROM AUTHOR]

Humans rely on several services delivered by biodiversity for their subsistence. Relationships between humans and biodiversity vary among sociocultural groups. Considering the increasing threats on parrot species worldwide, this study assessed local knowledge and uses of the Senegal Parrot Poicephalus senegalus in northern Benin. A survey was carried out from January to April 2023 using colour-printed photographs of the species and semi-structured questionnaires. A total of 455 people from 12 districts and 10 sociocultural groups were interviewed individually. In each district, interviewees were identified by using the snowball sampling technique. Descriptive statistics and some quantitative value indices were used to analyse data. Interviewees reported using eleven parts of the Senegal parrot for different purposes. In the study area, the parrot is consumed as a delicacy (84%). Nine parts of the species (feathers, beak, feet, head, etc.) were used for magico-spiritual purposes (34%) and six in folk medicine (11%). The live bird is used as a pet and for ornamentation (17%). According to the majority of interviewees, the species was found mainly in agroecosystems where it feeds primarily on matured cereals (maize and millet), and is thus considered an agricultural pest. The species was captured mainly in agroecosystems using slingshots and traps. The majority (55%) of interviewees estimated that populations of the species were decreasing owing to anthropogenic threats (deforestation, hunting, habitat loss). This study highlights the socio-cultural importance of the Senegal Parrot for local communities and suggests that actions should be taken for conservation of its habitats in order to reduce depredation damages on crops and fruits by the bird. [ABSTRACT FROM AUTHOR]

European Ospreys (Pandion haliaetus) typically migrate long distances to their nonbreeding grounds in sub-Saharan Africa. Other than the wide distribution of their wintering range (i.e., from Senegambia, Guinea-Bissau, and Mali north to Cameroon), little is known about the wintering ecology of these birds in Africa. From 2015 to 2022, we collected data to estimate the abundance and distribution of the nonbreeding population of Ospreys in the Langue de Barbarie National Park, northwestern Senegal. We found one of the highest densities of Ospreys recorded in Africa. Interestingly, most birds overwintering in Langue de Barbarie National Park were adults, suggesting a differential selection of the nonbreeding area for different life stages. Furthermore, although the number of Ospreys we recorded did not vary over the years, their spatial distribution did change. The observed changes in the spatial distributions of overwintering Ospreys were likely associated with a channel construction project. Because abiotic and biotic drivers influencing the nonbreeding period might subsequently affect abundance and distribution at local breeding grounds, integrative, holistic conservation strategies, including the protection of nonbreeding habitats, are essential for the conservation and protection of these migratory birds. [ABSTRACT FROM AUTHOR]

Growing human use of the marine environment increases the proximity of humans to marine wildlife and thus likely increases human–wildlife interactions. Such interactions influence perceptions of nature and promote or undermine conservation. Despite their importance, human–wildlife interactions are rarely considered in ecosystem‐based marine spatial planning (MSP). Ideally, these interactions should be identified and considered in ecosystem‐based management (EBM), which is often purported to be the basis for MSP. We used Marxan software and data from a citizen science project documenting location, species, age, sex, and activity type to identify regions along Israel's coast with a high probability of encounters between people and 2 species of guitarfish. We considered the geographic distribution of these encounters and the various activities undertaken by the reporting observers. We ran 4 scenarios in Marxan. Two had conservation goals of 30% and 50% guitarfish habitat protection. In the third and fourth scenarios, we added a 50% conservation goal of human leisure activities to each guitarfish conservation goal. We also conducted a gap analysis between our guitarfish conservation goals and the Israel Nature and Parks Authority's master plan for marine protected areas. We found the park authority was close to meeting the 30% goal but was far from meeting the conservation goal of 50% of guitarfish habitat conservation. Different human uses were more likely to interact with different life stages of guitarfish, and different recreational activities occurred in different areas. Identifying areas of specific human use showed which activities should be addressed in conservation management decisions. Our addition of certain recreational uses to the model of habitat conservation showed how enhancing human dimensions in conservation planning can lead to more holistic ecosystem‐based conservation necessary for effective marine planning. [ABSTRACT FROM AUTHOR]

The success of ponds constructed to restore ecological infrastructure for pond‐breeding amphibians and benefit aquatic biodiversity depends on where and how they are built. We studied effects of pond and landscape characteristics, including connectivity, on metapopulation dynamics of 12 amphibian species in Switzerland. To understand the determinants of long‐term occupancy (here summarized as incidence), environmental effects on both colonization and persistence should be considered. We fitted dynamic occupancy models to 20 years of monitoring data on a pond construction program to quantify effects of pond and landscape characteristics and different connectivity metrics on colonization and persistence probabilities in constructed ponds. Connectivity to existing populations explained dynamics better than structural connectivity metrics, and simple metrics (distance to the nearest neighbor population, population density) were useful surrogates for dispersal kernel‐weighted metrics commonly used in metapopulation theory. Population connectivity mediated the persistence of conservation target species in new ponds, suggesting source–sink dynamics in newly established populations. Population density captured this effect well and could be used by practitioners for site selection. Ponds created where there were 2–4 occupied ponds within a radius of ∼0.5 km had >3.5 times higher incidence of target species (median) than isolated ponds. Species had individual preferences regarding pond characteristics, but breeding sites with larger (≥100 m2) total water surface area, that temporarily dried, and that were in surroundings with maximally 50% forest benefitted multiple target species. Pond diversity will foster amphibian diversity at the landscape scale. [ABSTRACT FROM AUTHOR]

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Worldwide, coastal wetlands are threatened by disrupted hydrology, urbanization, and sea-level rise. In southwest Florida, coastal wetlands include tidal creeks and coastal ponds, which are the primary habitats used by juvenile Tarpon, Megalops atlanticus, an important sport fish. Coastal ponds can occur near uplands and are ephemerally connected to the open estuary, creating conditions of variable dissolved oxygen and salinity. Juveniles can tolerate wide-ranging abiotic conditions, but little is known about how they egress from their remote nursery habitats, which often requires them to cross > 1 km of mangrove forest to reach the open estuary. The objective of this study was to (1) compare Tarpon body condition among ponds close to the open estuary versus those ponds farther away on the Cape Haze peninsula of Charlotte Harbor, Florida, and (2) using acoustic telemetry determine what factors contribute to Tarpon emigration from the ponds to open estuarine waters. We tested the hypothesis that distinct groups of Tarpon occur in isolated ponds, leading to variation in fish length and body condition, and that opportunities for emigration from these ponds hinge on high water events. No pond stood out as having Tarpon of low body condition. Factors contributing to increased probabilities of Tarpon emigration were low barometric pressure, high-water level, and Tarpon body length. Tarpon emigrated from ponds near tidal creeks during summer king tides, while tropical cyclone conditions were needed to allow for movement from ponds farther in the landscape. The juvenile Tarpon were later detected at the mouths of large rivers 30 km up-estuary. The characterizations of water levels and event criteria needed for successful Tarpon nurseries should aid in habitat conservation and the creation of Tarpon nursery habitat in restoration designs. [ABSTRACT FROM AUTHOR]

This study seeks better understanding of linkages between channel morphology, streamflow, and aquatic habitat for the effective rehabilitation of imperiled species in rivers subjected to intensive water resource management. We focused on the variability of shallow, low‐velocity (SLV) habitat over 50 years for a 56 km reach of the Rio Grande of central New Mexico (Middle Rio Grande). Hydraulic models used topographic data obtained through long‐term systematic monitoring between 1962 and 2012 to derive relationships between discharge and SLV habitat availability. We developed a temporally integrated habitat metric (TIHM) to facilitate quantitative comparisons of SLV habitat availability over seasonal hydrologic periods (base flow, spring runoff, and summer low flow) for selected years representative of contemporary discharge variations. Results showed that SLV habitat availability, as captured by TIHM values, decreased on average by 83% over the study period (1962–2012), corresponding to completion of the Cochiti Dam (1973), which profoundly altered flow and sediment regimes. Resulting channel incision and floodplain disconnection, caused shifts in discharge‐habitat relationships whereby increases in SLV habitat availability in the modern channel were strictly maximized at the upper range of modeled discharges (200 m3 s−1)—discharges greater than 100 m3 s−1 are infrequent today. Ecological implications of losses to SLV habitat availability include recovery of the federally endangered Rio Grande Silvery Minnow Hybognathus amarus. [ABSTRACT FROM AUTHOR]

Shenzhen, a bustling metropolis in China, is currently grappling with the delicate balance between urban expansion and environmental preservation. This study finds that the disintegration of habitats due to urban development in Shenzhen city significantly impacts the ecosystem of animals and plants, detrimentally altering their living conditions. The study results reveal that the expansion of construction land in China has surged by an impressive 84.39% between 2000 and 2020, which has come at the cost of diminishing wetlands, farmland, and woodlands by 57.24%, 16.58%, and 1.86%, respectively. Between 1980–2020, the urban expanse of Shenzhen expanded dramatically, growing from 16.0 square kilometres to 850.2 square kilometres. This transformation was primarily driven by the rapid conversion of forested areas, which saw a staggering decrease of approximately 300% to 780 km2 by 2020. Additionally, half of Shenzhen's expansion can be attributed to the transformation of agricultural land, with an additional 40% stemming from the clearing of forests and approximately 9% resulting from the decrease in water resources. Furthermore, non-urban green spaces, particularly built-up areas, have significantly expanded, now encompassing approximately 60% of the city in 2018. Therefore, based on the existing literature and authoritative legal texts, this study aims to examine the legal frameworks of the Shenzhen government and, along with China's national legislation, to make room for wildlife and biodiversity conservation in a metropolis like Shenzhen. [ABSTRACT FROM AUTHOR]

The rapid decline in avifauna populations across North America underscores the urgency of implementing effective conservation strategies. While waterfowl species have generally increased in abundance due to investments in habitat restoration and species management, most other waterbird species have declined. In contrast to the widespread decline of natural habitat for waterbirds, urban greenspaces have proliferated. However, the extent to which urban greenspaces provide habitat for waterbirds is largely unknown. We measured waterbird abundance in Forest Park, Saint Louis, which contains a large expanse of restored waterways. Between 2020 and 2022, we used point counts to quantify alpha and beta diversity of waterbirds across five waterbodies. We also quantified several environmental factors hypothesized to influence waterbird presence including weather, bathymetry, water quality, and prey abundance. We assessed environmental drivers of alpha and gamma diversity using generalized linear mixed models, and beta diversity with Jaccard's similarity indices and Mantel tests. Water depth and depth heterogeneity were the strongest determinants of alpha diversity. Measured environmental variables did not predict beta diversity but improved model fit when testing gamma diversity. Forest Park is a regionally important urban habitat for waterbirds, hosting 62% (38 species) of the total regional species pool, including nine species of conservation concern and two state endangered species. Urban parks can contribute to waterbird conservation despite habitat loss elsewhere if park managers prioritize habitat restoration. In addition to the total area of waterways, water depth and water depth homogeneity are important considerations to maximize waterbird species diversity in urban greenspaces. [ABSTRACT FROM AUTHOR]

Human population growth is associated with increased disturbance to wildlife. This effect is particularly acute in urban and periurban areas, where the area of effective disturbance extends beyond that of human presence by the roaming behaviour of pet dogs. Dogs are globally the dominant companion animal, with a population of ~ 12 million in the UK. As urban areas extend, dogs are exercised in green space close to housing. In southeast and southern England these areas include lowland heath, a habitat of high conservation value. To quantify disturbance caused by dog walkers and their dogs, we used GPS units to track the movement of people and their dogs across four lowland heath sites, used a questionnaire to ask about dog walking habits, and mapped potential areas of disturbance caused by dog walkers. Questionnaires were completed by 798 dog walkers and the walks of 162 owners and their 185 dogs were recorded. Mean (± SE) walk time was 56 ± 23 min, walk distance 3.75 ± 1.68 km and dogs were a median distance of 20 m from the owner during walks. Dogs were walked once (44%) or twice (56%) a day. Most (always: 85%; always or occasionally: 95%) dogs were walked off the lead even when signs were present requesting that dogs were kept on a lead. This resulted in up to a 21% increase in reserve area disturbed. In one reserve (Snelsmore Common), > 90% of the area was disturbed by dogs, greatly eroding its conservation value. This work highlights the importance of considering how dog ownership can exacerbate levels of disturbance in sensitive periurban habitats when housing developments are planned. [ABSTRACT FROM AUTHOR]

The Harbison's dun skipper subspecies (Euphyes vestris harbisoni) has a geographically limited distribution in southern California, USA and northern Mexico, isolated from the other subspecies. This skipper is a specialist, primarily found in riparian oak woodlands and only feeds on the San Diego sedge as a larva. Several extirpations have been documented, generating concern for its long-term persistence. We conducted visual surveys in 2021 and 2022, and a marking study in 2022, to assess population sizes. Habitat preferences were explored by collecting habitat covariates and analyzing GIS available environmental data. A significant decline in skipper counts occurred during a drought, with abundances remaining small following the drought. Population size estimates from a marking study had low accuracy due to the small population sizes. For this reason, we used the annual maximum count (Max Count) as a robust and efficient metric for monitoring this skipper. No difference was found between used and unused sedge patches using vegetation-based habitat covariates. However, a GIS approach described the historic distribution as woodlands at intermediate elevations, warmer summer temperatures, and intermediate levels of summer evapotranspiration. Implications for insect conservation: The decline in abundance and number of populations justify future conservation efforts, including identifying areas that should be prioritized for future surveys and restoration efforts. Most importantly, this study demonstrates that these woodlands should be managed/protected in their entirety to allow for annual movement of sedge plants and skippers. [ABSTRACT FROM AUTHOR]

This paper examines the application of biodiversity offsets and banking to the conservation of Ramouadam, a man-made dam with a dam, used for fish culture, surrounded by agricultural lands, and supported by a canal for a constant water supply. The study explores the potential of biodiversity banking as a tool for balancing development pressures from nearby urban and highway areas with the need to maintain and enhance the dam's biodiversity. [ABSTRACT FROM AUTHOR]

The present study was carried out to document and analyze the common structure, diversity and abundance of butterfly in Jiwaji University, Campus, Gwalior Madhya Pradesh, India from July, 2023 to June, 2024. Direct visual encounter method used for recorded butterfly and photographs were taken for identification of butterfly species. A total of 40 species of butterflies belonging to 5 families were recorded. Nymphalidae family consists of maximum number (13) of butterfly species followed by Pieridae (11), Lycaenidae (9), Papilionidae (4) and Heperiidae (3) respectively. Total 496 number of butterfly captured among them Eurema brigitta recorded highest number of butterfly (14) of total abundance. Present study will help to assess the habitat and effective conservation of butterfly diversity in University campus. [ABSTRACT FROM AUTHOR]

The Dalma Wildlife Sanctuary, a critical habitat for elephant conservation in the Dalma Landscape, is increasingly experiencing the multifaceted impacts of climate change. This study reviews secondary literature to examine the consequences of Land Use and Land Cover (LULC) changes on elephant populations, emphasizing the exacerbating effects of climate-induced alterations. The sanctuary faces challenges like habitat degradation and fragmentation, which impede wildlife movement and intensify human-wildlife conflicts, particularly with elephants. These issues are now compounded by climate change, which is altering vegetation patterns, water availability, and seasonal behaviours of wildlife, further straining the delicate balance of this ecosystem. This paper methodically dissects the literature, highlighting how climate change interplays with existing environmental stressors, affecting the conservation strategies and viability of elephant corridors. The review also considers management strategies, underscoring the need for adaptive measures that address the dual challenges of habitat degradation and climate change. By broadening the scope to include the climate change dimension, this research not only underscores the researcher's comprehensive understanding of the sanctuary's ecological challenges but also aligns the study with global environmental concerns, making it relevant in the context of contemporary wildlife conservation efforts. Through a structured approach, the paper is divided into sections that explore the sanctuary's ecological significance, the factors impacting elephant populations with a focus on climate change, and methods for studying human-elephant conflicts in the context of a changing climate. This comprehensive analysis aims to identify research gaps, propose adaptive conservation strategies, and contribute to the broader understanding of how climate change is reshaping wildlife conservation paradigms. [ABSTRACT FROM AUTHOR]

Effective conservation of migratory species relies on habitat protection throughout their annual cycle. Although protected areas (PAs) play a central role in conservation, their effectiveness at conserving habitats across the annual cycle of migratory species has rarely been assessed. We developed seasonal ecological niche models for 418 migratory butterfly species across their global distribution to assess whether they were adequately represented in the PAs across their full annual cycle. PA coverage was inadequate in at least one season for 84% of migratory butterflies, adequate for only 17% of species in one season, and inadequate for 45% of species in all seasons. There was marked geographic variation in PA coverage: 77% of species met representation targets in Sri Lanka, for example, but only 32% met targets in Italy. Our results suggest that coordinated efforts across multiple countries will be needed to develop international networks of PAs that cover the full annual cycle of migratory insects and that conservation measures, in addition to the establishment and maintenance of PAs, are likely to be needed to effectively conserve these species. [ABSTRACT FROM AUTHOR]

Introduction: This study focuses on the Ganqing section of the Yellow River Basin, exploring four land use scenarios: natural development, cropland protection, ecological protection, and rapid development. Given the ecological importance of this area, the research aims to evaluate how each scenario impacts habitat quality and land use sustainability by 2030. Methods: The Future Land Use Simulation (FLUS) model and the Integrated Valuation of Environmental Services and Tradeoffs (InVEST) model were applied to simulate land use for each scenario. A habitat quality pattern and coupling coordination degree model was used to assess the interactions between land use and land cover change (LULCC) and habitat quality under different scenarios. Results: Findings show that over 70% of the Ganqing section of the Yellow River Basin is primarily grassland. By 2030, the ecological protection scenario is predicted to have the highest habitat quality, followed by the natural development, rapid development, and cropland protection scenarios. Between 1990 and 2030, the area demonstrates predominantly high or moderate coordination between land use and habitat quality. Spatial analysis reveals lower coordination values in the southeast and higher values in the northwest, with imbalanced recession zones distributed around valley basins. Discussion: This study highlights the value of strategic scenario planning in enhancing habitat quality and promoting sustainable land management in the Ganqing section of the Yellow River Basin. The ecological protection scenario shows the most promise for balancing development with habitat preservation, underscoring the importance of adopting land use policies that support ecological sustainability in vulnerable areas. [ABSTRACT FROM AUTHOR]

Background: Despite considerable research on nest site selection of diamondback terrapins and the risks that coastal roads pose to populations of this obligate estuarine turtle, there are gaps in our understanding of movements and habitat use by female terrapins during the nesting season. In particular, movements within salt marshes, shallow water habitats, and nest site-adjacent developed habitats remain relatively understudied. To investigate habitat use and risk exposure of this semiaquatic species, we employed an automated radio telemetry system featuring 31 passive receivers. In 2021, concurrent with annual nest surveys, we tracked 60 telemetered female terrapins near a nesting area in southern New Jersey subject to impacts from road mortality. We triangulated terrapin locations based on the relationship between radio signal strength at each receiver and distance, generated utilization distributions using kernel density estimation, and classified habitat using multispectral imagery. Results: We detected differences in habitat use versus relative availability within general (95% KDEs) and core (50% KDEs) use areas at a population level. Core use areas suggested more frequent use of salt pools, marsh, and upland habitats and less frequent use of developed and wide tidal creek habitats than expected based on availability alone. To further characterize variability in habitat use, we compared selectivity between terrapins grouped by proximity of their capture location to a road. Terrapins nesting closer to the road showed relatively more frequent usage of developed habitats and less frequent usage of narrow creeks and regularly flooded marsh throughout the nesting season. Conclusions: Patterns of habitat selection across all terrapins underscore the importance of shallow water habitats such as salt pools near nesting areas. Individuals tended to spend more time in habitat types close to their nesting locations, such that terrapins initially captured near roads spent more time in high-risk developed areas throughout the study period. Road mortality risk may not be homogenous within this nesting population, which may be a critical consideration for demographic modeling. This study expands our understanding of terrapin movements while demonstrating the effectiveness of a novel radio telemetry approach, and contributes to conservation planning in a rapidly changing salt marsh landscape. [ABSTRACT FROM AUTHOR]

Finding more sustainable ways to produce food is a major challenge for humanity in the face of biodiversity extinction and climate change. Consequently, research on the ability of agroecosystems to provide multiple functions is growing. In this regard, the relative importance of organic farming and landscape‐scale measures for improving multifunctionality has recently been debated. We investigated the effects of farming system (conventional vs. organic) at field scale, total length of hedgerows in the landscape and their interaction on the multifunctionality of 40 winter cereal fields in Brittany (France). Our multifunctionality assessment integrated 21 indicators of five agroecosystem goods: biodiversity conservation, nutrient cycling and soil structure, pest and disease regulation, food production and socio‐economic performance. Many indicators of biodiversity conservation, pest and disease regulation, and socio‐economic performance were higher in organic than in conventional systems. However, indicators of nutrient cycling and soil structure did not improve and food production was much lower in organic systems. Total hedgerow length in the landscape had less influence than organic farming on indicators, although we observed positive interactions. Granivorous carabid abundance and semi‐net margin were highest in organic fields located in well‐preserved hedgerow landscapes. Synthesis and applications. Our study suggests that field‐scale organic farming is necessary to promote biodiversity conservation and associated ecological functioning in crop fields, whereas landscape‐scale preservation of semi‐natural habitats alone is likely insufficient. Preservation of hedgerows in the landscape brings additional ecological and socio‐economic benefits for organic systems without compromising agricultural production. More broadly, our results call for more ambitious research into the myriad possible combinations of farming practices and agri‐environmental measures at both field and landscape scales, to improve both below‐ground and above‐ground functioning. [ABSTRACT FROM AUTHOR]

Sea beet (Beta vulgaris L. subsp. maritima (L.) Arcang.) is a wild member of the Amaranthaceae family and a progenitor for all the cultivated beets (Beta vulgaris subsp. vulgaris). It is a source of stress-resistant genes, contributing 21 valuable traits to sugar beet through multiple breeding approaches. Despite its importance, the core morphological diversity of sea beet within the Egyptian Mediterranean coastal region has not yet been thoroughly explored. The field observations indicated notable morphological diversity among sea beet populations. This study investigated the morphological diversity of six sea beet populations along with their associated soil and climatic conditions in their primary habitats. Our morphometric investigations identified two varieties: Beta vulgaris subsp. maritima var. glabra, characterized by glabrous, erect, larger basal leaves, and Beta vulgaris subsp. maritima var. pilosa, distinguished by its hairy, prostrate form with smaller basal leaves. These varieties exhibited differences in their spatial distribution, showing high variations at the inter- and intra-population levels as well as the variety level. Soil parameters significantly influenced population morphological variability, which demonstrated a strong positive correlation with soil organic carbon. Our results highlight the need for precise survey and molecular characterization to secure these potential genetic resources from alteration and loss, especially in coastal habitats that are particularly sensitive to future climate change. [ABSTRACT FROM AUTHOR]

South Korea's River Act mandates the maintenance of instream flow to support river ecosystems. This regulation has evolved from early river management practices to more advanced, systematic approaches, including the Instream Flow Incremental Methodology (IFIM). Despite these advancements, river management in South Korea, particularly in the Seomjin River Basin, continues to face numerous challenges. In this study, a three-dimensional numerical model was developed to simulate the hydrodynamic and salinity conditions of the Seomjin River Estuary. This study proposes optimal instream flows to support critical habitats for the Corbicula bivalve, which has seen a significant decline due to salinity intrusion by environmental changes. Using the Environmental Fluid Dynamics Code (EFDC), the model simulates salinity and river discharge with calibration and validation by incorporating historical data. Subsequently, this study evaluates how river discharge affects salinity in four major Corbicula habitats (Dugok, Shinbi, Mokdo, and Hwamok). Finally, we determine the minimum flow (instream flow) needed to sustain Corbicula habitats. In short, this study found that the minimum flow rates (instream flow) required to meet target salinities varied significantly across these sites and under different tidal conditions. These findings highlight the necessity of adapting river flow management practices to preserve the ecological health for Corbicula in the Seomjin River Estuary. Furthermore, this study suggests integrating an additional water supply to be used with local water management plans by suggesting short-term and long-term alternatives in order to sustain adapting river minimum flow (instream flow). [ABSTRACT FROM AUTHOR]

Grant's gazelles (Nanger granti) are classified as of least concern by the IUCN, although their number is declining due to several factors. A few research studies have been conducted on Grant's gazelle in Ethiopia. Thus, the present study was carried out to determine the population size and habitat association of Grant gazelle in the Ene Forest of western Ethiopia, comprising the dry and wet seasons. The study area was stratified into four habitats: woodland, mixed woodland, riverine forest, and grassland habitats. The data were collected using the direct observation technique. The data were analyzed using descriptive statistics and Pearson's chi-square (χ2) test. The average estimated Grant gazelle population was 136 ± 23 individuals, with a density of 9/km2. The adult male-to-adult female sex ratio was 1:1.40 and 1:1.26 during the wet and dry seasons, respectively. The largest herd size (N = 6) was observed during the wet season, and the smallest (N = 4) was observed during the dry season. The highest numbers of Grant gazelles were observed in the grassland habitat during the wet season and in the woodland during the dry season. More Gazelles (N = 65) were observed in the woodland habitat compared to the other habitat types. The continued existence of the Grant's gazelle population in the area and the suitability of the environment depend significantly on ongoing assessments of habitat change and management intervention. [ABSTRACT FROM AUTHOR]

Amphibian declines, driven by climate change (e.g., shifting temperatures, altered precipitation) and human activities like deforestation, agriculture, and urbanization, may lead to local extinctions. Quantifying the relative impact of climate change versus human influence remains challenging. This study uses species distribution models (SDMs) and nearly 1000 years of historical distribution data from ancient texts and local archives to reconstruct the past distribution range of the Chinese giant salamander (Andrias davidianus) and to assess the spatiotemporal shifts in its range over time. The results reveal that over the past millennium, the potential distribution range of the Chinese giant salamander consistently contracted, decreasing by 10% from the Ming Dynasty (1368–1644) to the Qing Dynasty (1644–1912) and a further 30% from the Qing Dynasty to the modern era. Losses are concentrated in eastern plains with abundant water bodies, resulting in available habitat reduction to 27% of the Qing Dynasty's area. Climate factors have been key in shaping the salamander's distribution, but our findings reveal that population density has consistently impacted its range throughout history, highlighting the lasting influence of human activity. Climate models project a about 10% decrease in suitable habitat by around 2090, with northward shifts in suitable habitat. Given the urgent threat of habitat loss and environmental degradation, immediate and effective actions are crucial to prevent the local extinction of the Chinese giant salamander, including habitat protection, environmental restoration, and strict regulations against hunting and habitat destruction. This study, analyzing the Chinese giant salamander's suitable habitat historically, identifies human activities as a pivotal force in early amphibian species decline in China, contributing valuable perspectives to future amphibian conservation and management. [ABSTRACT FROM AUTHOR]

The document discusses the importance of conserving freshwater fauna due to their crucial roles in maintaining ecological balance and providing essential services to human societies. Threats to freshwater species include habitat loss, overexploitation, invasive species, and climate change. Recent innovations in conservation, such as habitat restoration and genetic monitoring, offer hope for reversing negative trends. Engaging local communities in conservation efforts and integrating climate change projections into planning are crucial for long-term success. The document emphasizes the necessity of addressing global challenges like climate change and pollution to ensure the health of freshwater ecosystems and the species within them. [Extracted from the article]

Ecological restoration projects aim to recover ecosystems that have been degraded, damaged, or destroyed. The effective assessment of these projects is crucial for ensuring that restoration goals are met and for guiding future efforts. The Poplar Ecological Restoration Project (PERP), focused on removing floodplain poplar plantations, is a key environmental initiative in China to preserve the ecological functions and services of the Dongting Lake freshwater wetland complex. Understanding the dynamic changes in ecosystem services and their trade-offs/synergies before and after the project is crucial for ensuring that ecosystem services are maintained and enhanced. This study selected three key ecosystem services, water conservation, carbon storage, and habitat quality, as indicators to assess the PERP. Using the Integrated Valuation of Ecosystem Services and Trade-offs (InVEST) model and geostatistical methods, including the Spearman correlation analysis and spatial autocorrelation analysis, we explored the ecological outcomes of the project. The results indicated that since its implementation in 2014, the PERP has significantly altered the land use and land cover (LULC) in the lake. Most of the former plantations have been converted into reedbeds (17,404 ha), followed by sedgelands (3841 ha), mudflats (443 ha), shallow waters (382 ha), and deep waters (301 ha). During this period, water conservation and habitat quality initially decreased and then increased, while carbon storage continuously declined. Overall, all assessed services showed an increasing trend except for carbon storage, resulting in a slight decrease in the integrated ecosystem services. Moreover, there were strong bivariate associations among the three investigated ecosystem services, and the synergies were strengthened during the project. Importantly, these synergies became positive after the PERP, meaning that the improvement of one service enhanced others, potentially leading to a more sustainable and resilient ecosystem. [ABSTRACT FROM AUTHOR]

Determination of distribution range with the suitability of available habitat is one of the important facets for conservation planning on any threatened species. The slender-billed vulture (SBV) Gyps tenuirostris is one of the three critically endangered Gyps vultures found in Arunachal Pradesh, North East India. Maximum Entropy (MaxEnt) software was used to predict potential distribution range, habitat suitability and influence of environmental variables on the distribution of SBV. Analysis showed that out of the total area of 81658.85 km2, 95.88 km2 (0.12%) fell in the 'extremely suitable area' category. The prediction from MaxEnt was highly accurate, with a statistical AUC value of 0.994. The predicted preferred habitat of SBV includes areas with low elevation, high temperature, high precipitation, and open land with less vegetation cover. Elevation (63%) was found to have the most significant influence on the distribution of SBV. The findings of the present study will help in the implementation of any conservation initiatives required in the future with respect to SBV population protection or habitat conservation in Arunachal Pradesh. [ABSTRACT FROM AUTHOR]

Pest‐regulating natural enemies often require crop and non‐crop habitats to persist and be effective. These habitats offer hibernation sites, alternative prey or floral resources but can also be complementary in when they provide resources. The relative contribution of these different habitats to the performance of pest‐regulating insects is largely unknown, since it is difficult to study empirically. Landscape‐based population‐dynamical modelling can fill this research gap.In this study, we modelled the dynamics of predatory hoverflies (Diptera: Syrphinae) and their aphid prey in a collection of habitats. These hoverflies are dependent on different habitats for different reasons. While their larvae predate on aphids, adult hoverflies require floral resources. Resources are often segregated in different habitats. In addition, they are only temporarily available in any habitat type. In our model, hoverflies move between different habitats and select where to feed and where to produce off‐spring based on optimal foraging considerations. The model represents habitats common in arable landscapes and their temporal availability of resources is parameterized based on field observations.The model shows that effective pest suppression will only occur in the presence of at least three different habitats, including two crops that provide prey resources at different times of the year. A woody habitat with shrubs and trees provide aphid prey very early and late in the season, whereas an early crop and a late crop cover the period in between. In addition, these habitats need to provide floral resources in the same period as aphids, for example by flower strips in the margins of crop fields or blossoming trees or shrubs in the woody habitat. Under the model assumptions, the best pest suppression is obtained when the woody habitats take up 6% to 10% of the landscape. In addition to yearly population fluctuations, also bi‐ or multi‐yearly cycles may occur, depending on the composition of the landscape.Synthesis and applications. Our model shows when an agricultural landscape is 'complete' for natural enemies (and for effective pest control). For this, it needs to contain multiple habitats that supply floral and prey resources in different periods of the year. [ABSTRACT FROM AUTHOR]

Curbing global wildlife population declines will necessitate the protection of their habitat, and subsequent robust baseline information about wildlife that use and occupy it. Collating such information, however, remains a challenging and costly endeavour. Little did we know that traces of wildlife presence float in the air and can be detected through traces of DNA.Here, we deployed samplers to test the applicability of collecting airborne eDNA for the detection of a threatened species, the koala, and its co‐occurring terrestrial mammalian community.We develop a novel species specific qPCR assay to detect the presence of koalas and applied this in concert with a meta‐barcoding approach to detect the co‐occurring mammalian community.Through sampling of airborne particles, we successfully detected koala presence accurately to habitat patch level, alongside 16 unique taxonomic assignments, successfully assigning 11 of these to species level including detections belonging to the wallaby, antechinus, members of possum family and invasive species such as foxes, domestic dogs and hares.Synthesis and applications: We demonstrate the potential of airborne eDNA for the detection of threatened terrestrial wildlife and their surrounding ecological community under natural conditions. With achievable optimisations we detail how airborne eDNA may be applied for the management and monitoring of threated species for enhanced conservation efforts. [ABSTRACT FROM AUTHOR]

In the course of land‐use change, especially since the mid‐20th century, the area of semi‐natural (unimproved) grasslands has dramatically decreased. One way to counteract this process is to designate nature reserves. However, the effectiveness of nature reserves is controversial.The aim of our study was to evaluate the environmental drivers of species richness and biomass of Orthoptera (hereinafter termed 'grasshoppers') in grasslands inside nature reserves and within the intensively used agriculture landscape (hereinafter termed 'wider countryside'). For this purpose, we sampled the grasshoppers at the landscape scale in 45 randomly selected plots. Each plot had a size of 5 ha. The abundance of grasshoppers, as a basis for the biomass calculation, was recorded at the habitat scale in 20 meadow patches (500 m2 each). In addition, various environmental parameters such as habitat diversity, mowing intensity and vegetation structure were determined at the landscape and habitat scale.Our results illustrate the importance of nature reserves for the conservation of grasshoppers. Control plots in the wider countryside harboured fewer species than plots within nature reserves. The differences were even clearer among threatened species. On average, plots in nature reserves had almost twice as many threatened species than control plots in the wider countryside. The comparison revealed similar patterns at the habitat scale: both the number of species and biomass were higher in nature reserves. At the landscape scale, number of species were best explained by the amount of wet grassland and habitat diversity. We identified mowing intensity and to a lower extend the degree of drainage as the key drivers of species richness and biomass at the habitat scale.Synthesis and applications: To preserve biodiversity in nature reserves, we recommend (i) leaving uncut refuges during mowing and (ii) blocking drainage to stabilise the water level. Both measures contribute to a high species number and abundance of grasshoppers and many other insects. An effective conservation measure to promote species richness in the wider countryside would be to increase habitat diversity. This can be done by creating or restoring fallow islands, field margins, fringes and hedgerows. [ABSTRACT FROM AUTHOR]

Biotic and abiotic factors can act as filters for determining the species composition of biological communities. We aimed to identify abiotic factors driving the assembly of bat communities in Eastern Mediterranean pine plantations along a north–south climatic gradient, as they are crucial forest habitats for the assessment and conservation of these communities. We expected that bat communities are predominantly shaped by environmental filtering. We conducted acoustic sampling in 35 pine plantations in Israel and analyzed recordings for species identification. We used the ESLTP analysis, an extension of the three‐table ordination (RLQ analysis), to explore relationships between environmental characteristics, species occurrences, and functional traits of species while accounting for phylogenetic relationships between species and spatial distribution of the communities. Communities showed phylogenetic and trait clustering. Climatic conditions and forest vegetation composition shaped communities of bats, affecting the distribution of traits related to foraging behaviors, vegetation clutter, and the ability of bats to maneuver in it. Maneuverable species were associated with the northern Mediterranean climatic zone, with a scarce cover of drought‐tolerant small shrubs and grassland. Fast flyers were associated with the center‐south semi‐arid area, with abundant drought‐tolerant small shrubs and grassland. These forces might have a predominant role in the assembly of these communities, presumably due to the stressful climatic conditions of the study area. The ESLTP approach can be extended to other taxa and environments to predict species responses to disturbance and environmental changes and give insights into environmental management. [ABSTRACT FROM AUTHOR]

The influence of fragmentation per se on biodiversity is hotly debated, with evidence of negative, neutral, or even positive effects after controlling for habitat amount. Principles from this debate are often used to inform biodiversity conservation in remnant habitat fragments but are rarely considered in a restoration context. Habitat restoration is essential to work alongside conservation and reverse biodiversity declines. Although restored habitats vary along a similar fragmentation gradient to remnant patches, the importance of different processes likely varies. Communities in remnant patches are largely determined by existing populations, while communities in restored patches are shaped by colonization from nearby populations. We illustrate how fragmentation per se can have variable outcomes for biodiversity depending on whether habitat is conserved or restored. The fragmentation debate, in its current form, has limited application for restoration ecology, and we emphasize the need for ecologists and conservationists to consider the directionality of the fragmentation process. [ABSTRACT FROM AUTHOR]

McKown, J.G.; Burdick, D.M.; Moore, G.E.; Gibson, J.L., and Ferguson, W., 2024. Evaluation of drainage enhancement for vegetation recovery in New England salt marshes using public domain, high-resolution aerial imagery. Journal of Coastal Research, 40(6), 1144–1159. Charlotte (North Carolina), ISSN 0749-0208. Paired stressors of sea-level rise and abandoned ditches and embankments from historic farming practices have exacerbated waterlogging and accelerated replacement of valuable interior high marsh with large pools throughout the United States Atlantic seaboard. High marsh loss has contributed to substantial population declines and the threat of future extinction of the Saltmarsh Sparrow (Ammodramus caudacutus), an endemic species of coastal wetlands. Creation of runnels and selective ditch maintenance has been promoted as short- and medium-term solutions to conserve and restore high marsh habitat and restore natural single-channel hydrology. A comprehensive monitoring program was launched in 2020 to evaluate the effect of runnels and maintenance of selective ditches on the hydrology, vegetation, and elevation of interior marshes across 17 marshes of Maine, Massachusetts, and Rhode Island, with the explicit goal of habitat conservation for the Saltmarsh Sparrow. The marsh surface was classified from 2010–21 with public aerial imagery to document the change in aerial extent of the vegetated marsh surface and unvegetated:vegetated ratio of tidal watersheds (mean size = 2.12 ± 0.18 ha) associated with specific management actions: runnelling, reference healthy marshes, and no-action pannes and pools. Runnels reversed the expansion of pools and pannes with annual declines of –0.037 unvegetated:vegetated ratio and gains of 1.55% vegetated area. Tidal watersheds gained an overall net 2.08 ha vegetated surface post-restoration, despite continued losses in reference and no-action tidal watersheds. Re-establishing hydrologic paths to allow regular tidal flooding and drainage promotes revegetation of shallow waterlogged pools—a first step toward rebuilding marsh elevation and conserving habitat for saltmarsh sparrows. [ABSTRACT FROM AUTHOR]

Duke, L.D. and Laakkonen, K., 2024. Managing for sandy coastal habitat in SW Florida: Institutional complexities hinder local agencies' use of best practices. Journal of Coastal Research, 40(6), 1111–1124. Charlotte (North Carolina), ISSN 0749-0208. In the United States, many kinds of management for environmental protection are largely vested in local agencies of municipalities but subject to federal- and state-level policies, regulations, restrictions, and guidelines. These policies commonly overlap, sometimes conflict, and in many cases leave gaps with no guidance for important management aspects. This research conducted a close textual analysis of local planning and management documents, including review of permits for specific projects undertaken in 2000–15, as well as detailed analysis of federal- and state-level policies. The objective was to investigate the interactions and limitations of the existing suite of local, state, and federal policies and rules affecting beach management in SW Florida for sea turtles and beach-nesting birds. The research approach was to assess the extent to which stated and adopted procedures conformed to the best available science in protecting beach habitats, particularly in the context of rising sea level and its potentially devastating impact on beach habitats. Findings show that major rules from two federal agencies (U.S. Army Corps of Engineers and U.S. Fish and Wildlife Service) and two Florida State agencies (Florida Fish and Wildlife Conservation Commission and Florida Department of Environmental Protection) have important influences. This research shows uneven and local protections that routinely do not incorporate practices known to be supported by best science, in some cases egregiously so. Local policies vary widely in guidance language and specific protections. Analysis of 35 permitted beach nourishment projects during 2000–15 showed several example projects with excellent habitat protections but a strong majority with few or none of the kinds of protection documented by scientific information to be best practices to protect sandy beach habitat. The articulated conceptual policy goals of federal and state agencies have had almost no penetration into localmunicipalities' policies, guidelines, or procedures. [ABSTRACT FROM AUTHOR]

Economists typically estimate the economic value of wildlife-associated recreation by applying valuation methods to individual data collected from mail and internet surveys, however, surveys are limited to what respondents choose to report as well as who chooses to respond. Government records and mobile applications that track recreational activity can also provide data for economic valuation if activities can be linked back to individual decision-makers. One particularly intriguing source of government information is harvest check-in data, which tracks hunting success. In this paper, we examine the comparability of economic values based on surveys and harvest check-in data using a site choice model. While we find evidence the datasets yield different models, large and substantial differences are the exception rather than the rule, especially once we accurately account for individual trip costs. Our findings support the conclusion that data generated through surveys and harvest records are capable of producing similar valuation estimates. [ABSTRACT FROM AUTHOR]

'Everyday nature', understood as people's ability to access nature nearby, should be protected in law and planning policy, facilitating three key benefits: (1) human health and wellbeing; (2) intrinsic and extrinsic ecological advantages; and (3) supporting the UK's 30by30 nature conservation commitment. Yet there are three obstacles to the protection of everyday nature: (1) the prioritisation of 'special' and 'priority' nature conservation habitats; (2) the lack of protection for Local Wildlife Sites; as well as (3) counter-intuitively, the rise of biodiversity as a preferred governing concept. Addressing these obstacles, the paper develops the concept of everyday nature, making four proposals for change: (1) improved conceptual analysis; (2) confirming current policy on Local Wildlife Sites; (3) implementing the concept of everyday nature in legislation and planning policy; and (4) implementing the Government's target that everyone lives within a 15-minute walk from a green or blue space. [ABSTRACT FROM AUTHOR]

Information about reproductive habitat and migration pathways is of paramount importance to restore migratory fish species. This study assesses the availability of spawning and nursery habitats for the European sturgeon (Acipenser sturio) in the delta and lower Rhine (covering over 350 river kilometres) as part of a larger feasibility assessment for a future restoration of this critically endangered species. The general approach has three steps: (1) the identification of the species' specific habitat requirements, based on a systematic literature review; (2) the collection and preprocessing of data from two countries, including the 1D and 2D modelling of water depths and flow velocities; and (3) GIS‐based mapping of spawning and nursery habitat. Based on a HSI score of 1, we identify a total of 0.75 km2 as minimal spawning habitat, potentially suitable for approximately 2500 female European sturgeons (one spawning site would use ~300 m2). This is sufficient, as currently, only an estimated maximum number of 750 adults exist. Suitable spawning habitat is mainly located in the German state of North Rhine‐Westphalia, whereas suitable nursery habitat is mainly located in the Netherlands. The availability is, however, significantly reduced by coastal infrastructure (damming) and inland navigation. The insights gained can be used to assess the current suitability of the river Rhine for the species' reintroduction and to identify opportunities for habitat restoration and protection for various life stages. The outcomes thus play an essential role in the conservation of the species. In addition, the modelling approach developed could be applied to other northwestern European rivers. This broader application would allow intercomparison and support decisions about which rivers are best suited for future reintroduction of the critically endangered European sturgeon. [ABSTRACT FROM AUTHOR]

As one of the world's mega-biodiverse regions, the Indian subcontinent harbors exceptional biological riches spanning diverse taxa and ecosystems. However, rapid economic growth and associated anthropogenic pressures pose ever-increasing threats to native biota through habitat loss, overexploitation, invasive species, climate change, and pollution. This paper analyzes India's changing biodiversity landscape, evaluates the efficacy of conservation policies, and charts strategic priorities for the future. Spatiotemporal trends for 3563 species across terrestrial, fresh water and marine realms were assessed using IUCN Red List data. We find that birds and mammals show modest improvements recently owing to legal protections and habitat recovery initiatives. However, other less-charismatic taxa exhibit alarming population declines nationwide. Our policy analysis highlights critical gaps in implementation frameworks involving multi-sector coordination, capacity building, benefit sharing, and participatory decision-making. To arrest biodiversity erosion and achieve stated policy targets by 2030, we propose an integrated, evidence-driven strategy prioritizing invasives control, agro-ecological transitions, pollution abatement, ecological connectivity via green-gray infrastructure, and community-based adaptation. Mindful of inherent socio-ecological complexities, our recommendations provide a framework for targeted conservation investments attuned to India's development aspirations. [ABSTRACT FROM AUTHOR]

The increasing threats to global biodiversity notably impact cycads, one of the most endangered organisms. Despite the importance of nature reserves, they only sometimes provide sufficient protection from habitat destruction and illegal harvesting. Identifying and prioritizing suitable Mexican tepezmaite (Ceratozamia) habitats is imperative for restoration and protection. This study uses distribution models to map habitats for C. brevifrons, C. delucana, C. morettii, and C. tenuis to highlight optimal conservation zones. The study area lies in the Sierra de Chiconquiaco, Veracruz, Mexico. All species occurrences were collected, and four sets of environmental predictors were selected as input variables for the model. An ensemble species distribution model was constructed for each species. When contrasting the habitat areas within established nature reserves, gaps in conservation coverage were discerned. We assessed its conservation status following the IUCN and Mexican legislation criteria. A further 4 km2 of highly suitable habitat is desired for a nature reserves expansion strategy. C. brevifrons and C. tenuis are deemed vulnerable per IUCN criteria, while C. delucana and C. morettii are considered Endangered. However, Mexican laws categorize C. brevifrons, C. morettii, and C. tenuis as Endangered and C. delucana as threatened. Models suggest that the distribution of the species is constrained primarily by soil composition and topographical features. Based on the results of the models, it is essential to implement the restoration of the species' natural habitat. The tepezmaite cycads are a group of endangered species that may soon become extinct unless formal habitat protection is conducted. [ABSTRACT FROM AUTHOR]

The spawning grounds of Schizothoracinae fish, represented by H. microcephalus Herzenstein 1891, are under anthropogenic and climate change threats on the Tibetan Plateau, yet most of their locations and substrate requirements remain poorly studied. From 2019 through 2024, we conducted in situ observations of high-altitude Yangtze River headwaters to elucidate critical aspects of these spawning sites. We identified potential spawning behaviour and nest structure, detected reproductive activity, and reported egg burial for the first time, confirming the presence of spawning sites at 4806 m asl in the nearshore area of a braided river. Spawning occurred in mid-June prior to flooding in areas with extreme daily water temperature fluctuations. The spawning nest had a depth of 8–10 cm and a diameter of 20 ± 1 cm, containing 32 ± 15 fertilized eggs per nest. The absolute fecundity of female H. microcephalus was 10,537 ± 1306 eggs. Both mature female and male H. microcephalus developed nuptial tubercles. The GSI of females (8.2% ± 2.0%) was significantly greater than that of males (4.0% ± 1.2%). The females had almost twice the total length (36.7 ± 6.5 cm) and four times the body weight (396.5 ± 4.8 g) of the males (19.7 ± 1.8 cm and 98.8 ± 94.4 g, respectively), indicating marked sexual dimorphism. The gravel in the spawning nests had a median diameter of 18.4 mm and a maximum diameter of 4–5 cm, and the maximum length was approximately one tenth of the mean female total length. The high fertilization and hatching rates reached 98% and 82%, respectively, indicating good egg quality. Chorion softening but not hardening after fertilization was observed for the first time under natural conditions. The identification of spawning site characteristics and the discovery of egg burial are crucial for the habitat conservation of representative Schizothoracinae fish. [ABSTRACT FROM AUTHOR]

Mires are significant C-sinks and important habitats for biodiversity conservation. Particularly in the Alpine peatlands, grazing and trampling cause mires to degrade, causing changes in plant communities that increase bulk density, peat erosion, and nutrient excesses. We took sixteen samples of epipelic and epiphytic diatoms from mire pools subjected to varying degrees of grazing in the Adamello-Brenta Nature Park (Trento, Italy). We identified >100 diatom species (ca. 70% included in Red List threat categories). We used nMDS to identify groups of diatom species. Their statistical significance was checked with an ANOSIM and, to identify the species that contributed most to the difference between the two groups, a BEST-SIMPER procedure was carried out. The multivariate analyses allowed us to identify significant differences among the most and least grazed sites, and to select the species that contributed most to this distinction. We confirmed that some species were more frequent and abundant in the most grazed sites and behaved as opportunists in the presence of a greater nutrient input, to the detriment of rare and sensitive species, which were more numerous and abundant in the less grazed sites. We provided useful information on grazing effects, underlining the importance of managing and protecting habitats of unique environmental value. [ABSTRACT FROM AUTHOR]

Magnolia sieboldii, an important ornamental tree native to East Asia, comprises two subspecies in distinct regions, with wild populations facing suboptimal survival. This study aimed to understand the potential habitat distribution of these subspecies under future climate-change conditions to support climate-adaptive conservation. The maximum entropy (MaxEnt) model was used with occurrence and environmental data to simulate the current and future suitable habitats under various climate scenarios. Precipitation in the warmest quarter played a crucial role in shaping the potential habitats of both subspecies; however, they exhibited different sensitivities to temperature-related variables and altitude. Magnolia sieboldii subsp. sieboldii is more sensitive to temperature seasonality and annual mean temperature, whereas Magnolia sieboldii subsp. japonica is more affected by altitude, mean temperature in the driest quarter, and isothermality. Currently, the subsp. sieboldii is predicted to have larger, more contiguous suitable habitats across northeastern China, the Korean Peninsula, and Japan, whereas the subsp. japonica occupies smaller, more disjunct habitats scattered in central and western Japan and the southern Chinese mountains. These two subspecies will respond differently to future climate change. Potentially suitable habitats for subsp. sieboldii are expected to expand significantly northward over time, especially under the SSP585 scenario compared with the SSP126 scenario. In contrast, moderately and highly suitable habitats for the subsp. japonica are projected to contract southward significantly. Therefore, we recommend prioritizing the conservation of the subsp. japonica over that of the subsp. sieboldii. Strategies include in situ and ex situ protection, introduction and cultivation, regional hybridization, and international cooperation. Our study offers valuable insights for the development of targeted conservation strategies for both subspecies of M. sieboldii to counteract the effects of climate change. [ABSTRACT FROM AUTHOR]

Reintroductions are often needed to recover carnivore populations and restore ecological processes. Felids are common subjects of reintroduction efforts, but published population models informing felid reintroduction plans are uncommon, and poor planning has sometimes caused issues in felid reintroduction programs. In the United States, ocelots (Leopardus pardalis pardalis) are classified as endangered, and recovery requires population expansion into historic habitat. A multi‐organization effort is underway to establish a new ocelot population in Texas by releasing ocelots into an area of 478 km2 of suitable habitat in ocelots' historic but now unoccupied range. In this study, we used population viability analyses to compare different ocelot reintroduction strategies for the identified reintroduction area. Based on a potential ocelot breeding program's limitations, we modeled reintroduction using a founding population of no more than six ocelots and no more than four ocelots released per year for no more than 15 subsequent years. Within these limitations, we assessed projected population abundances and extinction risks after 30 years for 20 different reintroduction strategies. We found that long‐term releases are necessary to establish a viable population; under conservative model assumptions, releasing six ocelots in the initial year and then releasing four individuals annually for an additional 10–15 years is necessary for attaining a projected population greater than 36.62 ocelots (baseline) with <6% extinction risk. We also found that ocelot population abundance is about equally sensitive to post‐release mortality and inbreeding depression. This highlights the importance of not only supporting reintroduced ocelots' survival but also managing for high genetic diversity in the reintroduction program. Further, we found that realistic but more liberal assumptions on the carrying capacity of the reintroduction area and the age of first reproduction for ocelots increase projected population abundances (53.95 individuals and 61.26 individuals, respectively), and thus reintroduction success. The model's sensitivity to carrying capacity suggests that long‐term habitat protection and expansion are among the most important management actions to support ocelot reintroduction. Our study establishes the first population viability model for an ocelot reintroduction plan anywhere across the species' wide geographic range, and it reinforces several key considerations for wildlife reintroduction efforts worldwide. [ABSTRACT FROM AUTHOR]

Bordoibam-Bilmukh is a small wetland located at the boundary of the Dhemaji and Lakhimpur districts of Assam, India that provides shelter and breeding ground to many resident and migratory birds. A survey was conducted between October 2022 and March 2024 on the avian diversity of Bordoibam-Bilmukh Bird Sanctuary. A total of 47 bird species under 16 orders and 29 families were recorded during the survey. Order Passeriformes, recorded with the highest number of avian species (15). Among the families, the highest number of species (5) was recorded under Ardeidae. Out of all the species recorded, three species, viz., Brown Shrike, Citrine Wagtail, and White Wagtail were winter migratory; one species, the Lesser Kestrel, was summer migratory, and the remaining 43 were resident species. Besides, two species, viz., Lesser Adjutant and Greater Adjutant are listed as 'Near Threatened' species on the IUCN Red List. Comparing the avian diversity from 1997 to 2024, a decline in the number of avian species from 167 (as per the 1997 record) to 47 (as per the present study) has been observed in the sanctuary. Various anthropogenic activities such as habitat destruction and disturbance, hunting of birds, are the major causes of the decline of avian diversity. For future species diversity restoration in the sanctuary, these negative anthropogenic activities should be addressed immediately for conservation strategies. [ABSTRACT FROM AUTHOR]

A comprehensive inventory of faunal and floral species in a specific region holds significant value for scientific investigation. This study was conducted between 2015 and 2021, especially during the winter season, in Pakhibitan Bird & Wildlife Sanctuary (also known as Gajoldoba wetland) in West Bengal, which was established in 2016. This wetland surrounded by forests is located on the upper section of the Teesta Barrage in the Dooars region of Jalpaiguri District, and it attracts birds from the Central Asian Flyway. Around 124 bird species belonging to 14 orders and 37 families were documented. Passeriformes with 32 species, and Anatidae with 23 species, are the most abundant groups. Based on the IUCN Red Data Book (2022-23), six species are Near Threatened, four are Vulnerable, and one Endangered. About 50% of birds were resident, 44% migratory, and 6% local migrants. [ABSTRACT FROM AUTHOR]

Background: The Yangtze finless porpoise (Neophocaena asiaeorientalis asiaeorientalis) is critically endangered and has suffered from extensive habitat loss and fragmentation. Knowledge of its habitat preference could assist the conservation of the species and associated ecosystem. In the present study, spatiotemporal variations and driving factors of habitat use of a Yangtze finless porpoise population were studied in a 30-km section of the Yangtze mainstream. Seasonal variation in porpoise occurrences was observed based on visual surveys conducted from 2022 to 2023, with five surveys during the dry season and seven surveys during the wet season. Biological and environmental factors were synchronously sampled in both seasons. The maximum entropy model (MaxEnt) was applied to get the effects of biological and environmental variables on porpoise habitat preference. Results: Within the study area, high-suitability habitats of the finless porpoises accounted for 19.0% and 15.4% of the area during the dry and wet seasons, respectively. The high-suitability habitat shifted from the mainstream in the dry season to the sandbar head and tributary area in the wet season. In the dry season, variables influencing the distribution were phytoplankton biomass, water velocity, and zooplankton biomass, which contributed 97.05% variation in the MaxEnt modeling. In the wet season, water depth, surface water temperature, and zooplankton biomass accounted for 97.69% variation of the distribution. Above results highlight that food availability plays an important role in porpoises distribution regardless of seasons, particularly in the dry season. This is because plankton is the primary food source for filter-feeding and omnivorous fish, especially those in the upper-middle layer which are frequently preyed on by finless porpoises. Conclusion: Suitable areas for finless porpoises, particularly those with high suitability, differed significantly across seasons at a fine-scale in the Yangtze mainstream. Seasonal variations in habitat were driven by different factors. But food availability plays an important role in porpoises distribution regardless of seasons, particularly in the dry season. These results suggest prioritizing conservation of the finless porpoise in the dry season when fish resources are relatively scarce. Measures including monitoring and evaluating prey resources should be considered. More attention should also be paid on management of shipping in the dry season given that the high-suitability habitat of the finless porpoises shifts to the mainstream. [ABSTRACT FROM AUTHOR]

Simple Summary: This study examines the nestedness of anuran species in the Chengdu region, Sichuan, during summers 2019–2020. Using a transect method, the area was surveyed across 23 sites and 8 regions. Habitat data were surveyed with sampling buffers at 1 km, 2 km, and 5 km to assess scale-dependent nestedness. The weighted-nestedness metric (WNODF) revealed strong nested patterns at both site and regional scales. Habitat nestedness was the sole driver, as other factors showed no significant correlation with nestedness. This study recommends habitat diversity protection as a key conservation strategy for anurans in the area. Nestedness in community ecology predicts that species in a species-poor site should be a subset of species of a species-rich site. A variety of ecological mechanisms have been offered to explain community nestedness; however, few studies have systematically discussed the issue of scale dependence when interpreting community nestedness. This study conducted surveys of anuran species data in the vicinity of Chengdu, Sichuan, in the summers of 2019–2020, using the transect method. The study area was divided into 23 sampling sites and 8 regions to explore the relationship between environmental factors and the nested distribution pattern of anuran communities under different sampling extents (with sampling buffers set at 1 km, 2 km, and 5 km). The WNODF (weighted-nestedness metric based on overlap and decreasing fill) results indicated that anurans exhibited a strong nested pattern at both the sampling sites scale and the regional scale. The habitat matrix test results suggested that a small-scale study area requires a correspondingly small habitat-sampling extent to effectively test for habitat nestedness. As the study area expands, the habitat-sampling range can be appropriately increased. The nested pattern of anurans in the vicinity of Chengdu can only be explained by habitat nestedness, as a Spearman's correlation analysis showed that other environmental factors (area size, connectivity index, concentration index, proximity index, and distance to the city center) were not significantly correlated with the nested sequences of sampling points and regions. Therefore, regarding the conservation strategies for anurans in the vicinity of Chengdu, we recommend prioritizing the protection of areas with higher habitat diversity. [ABSTRACT FROM AUTHOR]

Many mountain woodlands across the globe have undergone anthropogenic degradation with negative implications for the ecological and socioeconomic systems dependent on them. Montane willows are arctic‐alpine species of high nature conservation concern within the altitudinal treeline. Scotland has been pioneering the restoration of montane willow scrub for three decades following widespread loss linked particularly to overgrazing by sheep and deer since the eighteenth century. In the 1990s, the total area of montane willows throughout the country was less than 10 ha, with most remaining populations highly fragmented, in rapid decline, and restricted to inaccessible cliffs. Subsequently, montane willow scrub restoration has been part of an overall 2659 ha area managed for the recovery of mountain woodlands in Scotland. By May 2023, 396,868 montane willows were planted in projects encompassing large‐scale habitat creation, relict population reinforcement by genetic rescue, fencing, and landscape‐scale management for low‐density deer populations. This review summarizes restoration methods and outcomes with case study examples to promote conservation evidence and research on plant growth and survival, planting sites, associated biodiversity, molecular ecology, genomics, and long‐term population sustainability. With the potential for montane scrub restoration to be widely expanded, improved connectivity to revive a treeline mosaic shaped by regeneration will tackle biodiversity loss and help mitigate climate change impacts on a national scale. However, caution must be applied to creating definitions of distinct habitats for restoration that are based on non‐natural or ecologically degraded systems. These experiences are particularly relevant to montane and circumpolar regions with strongly modified landscape histories. [ABSTRACT FROM AUTHOR]

Many birds use wetland habitats for all or part of their lives. This study was conducted to investigate the significance of wetlands and associated habitats for bird conservation in the central zone of Tigray, northern Ethiopia, from June 2022 to May 2023. The point count method was used to study the bird assemblage structure and diversity. The Shannon–Wiener diversity index and ANOVA were used to analyze the wetland bird community structure. A total of 4337 individual birds belonging to 120 species, 15 orders, and 41 families were recorded. Among the identified bird species, the Abyssinian catbird, white‐winged cliff chat, Abyssinian longclaw, wattled ibis, and black‐winged lovebird are endemic and near‐endemic species, which are found only in Ethiopia and Eritrea. The Passeriformes order had the greatest number of species (n = 68), followed by the Columbiformes order (n = 9). The​ Mai‐Shigurti Wetland had the greatest abundance of birds (N = 2472), while the Hatsebo Wetland had the least (N = 936). A high abundance of birds was recorded during the wet season (N = 2805), and a low abundance was recorded during the dry season (N = 1532). A significant difference in the abundance of bird species was observed among wetlands and seasons (p < 0.05). The highest species diversity (H′ = 4.13) was recorded in Mai‐Shigurti during the wet season, whereas the lowest was recorded in Hatsebo during the dry season (H′ = 3.2). The highest species evenness was recorded in Hatsebo (E = 0.82) during the dry season, and the lowest was recorded in Mai‐Shigurti (E = 0.72) during the wet season. The results show that wetlands support a high diversity of birds; however, they are highly threatened by anthropogenic threats, including solid waste disposal, erosion, agricultural expansion, human settlement, livestock overgrazing, military camping, and eucalyptus cultivation. Therefore, community‐based conservation initiatives should be implemented to mitigate these threats. Moreover, wetland management policies should be established to safeguard wetlands and their biological resources. [ABSTRACT FROM AUTHOR]