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7 results on '"Alba Camacho-Santamans"'

1. Ecological status and type of alteration determine the C-balance and climate change mitigation capacity of Mediterranean inland saline shallow lakes

Author

Daniel Morant, Carlos Rochera, Antonio Picazo, Javier Miralles-Lorenzo, Alba Camacho-Santamans, and Antonio Camacho

Subjects
Inland (athalassohaline) saline shallow lakes, Carbon metabolism, Net ecosystem metabolism, Eutrophication, Ecological alteration, Restoration, Medicine, Science
Abstract

Abstract Saline shallow lakes may play an important role in carbon exchange with the atmosphere, but their alteration may change carbon balance and greenhouse gas emissions patterns. This study investigated the relationship between carbon metabolic processes and environmental factors, focusing on alterations in salinity, hydroperiod length, and trophic status. The results revealed that disruptions to natural salinity patterns, driven by hydrological changes and ecological degradation, enhanced carbon greenhouse gas emitting metabolisms. In contrast, well-preserved lakes demonstrated significantly higher carbon retention and climate mitigation capacities (–188 ± 412 g C m−2 yr−1) compared to lakes with hydrological and trophic disturbances (–30 ± 141 g C m−2 yr−1). These findings emphasize the relevance of the metabolic activity of saline shallow lakes and highlight the need for targeted management and restoration efforts to maximize their climate regulation potential. The insights gained from this study may also be applicable to similar ecosystems in other regions.

Published
2024
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2. Effects of Soil Quality on the Microbial Community Structure of Poorly Evolved Mediterranean Soils

Author

Antonio Camacho, César Mora, Antonio Picazo, Carlos Rochera, Alba Camacho-Santamans, Daniel Morant, Luis Roca-Pérez, José Joaquín Ramos-Miras, José A. Rodríguez-Martín, and Rafael Boluda

Subjects
soil quality, soil microbiota, microbial diversity and evenness, bacteria, archaea, ectomycorrhizal Fungi, Chemical technology, TP1-1185
Abstract

Physical and chemical alterations may affect the microbiota of soils as much as the specific presence of toxic pollutants. The relationship between the microbial diversity patterns and the soil quality in a Mediterranean context is studied here to test the hypothesis that soil microbiota is strongly affected by the level of anthropogenic soil alteration. Our aim has been to determine the potential effect of organic matter loss and associated changes in soil microbiota of poorly evolved Mediterranean soils (Leptosols and Regosols) suffering anthropogenic stress (i.e., cropping and deforestation). The studied soils correspond to nine different sites which differed in some features, such as the parent material, vegetation cover, or soil use and types. A methodological approach has been used that combines the classical physical and chemical study of soils with molecular characterization of the microbial assemblages using specific primers for Bacteria, Archaea and ectomycorrhizal Fungi. In agreement with previous studies within the region, physical, chemical and biological characteristics of soils varied notably depending on these factors. Microbial biomass, soil organic matter, and moisture, decreased in soils as deforestation increased, even in those partially degraded to substitution shrubland. Major differences were observed in the microbial community structure between the mollic and rendzic Leptosols found in forest soils, and the skeletic and dolomitic Leptosols in substitute shrublands, as well as with the skeletic and dolomitic Leptosols and calcaric Regosols in dry croplands. Forest soils displayed a higher microbial richness (OTU’s number) and biomass, as well as more stable and connected ecological networks. Here, we point out how human activities such as agriculture and other effects of deforestation led to changes in soil properties, thus affecting its quality driving changes in their microbial diversity and biomass patterns. Our findings demonstrate the potential risk that the replacement of forest areas may have in the conservation of the soil’s microbiota pool, both active and passive, which are basic for the maintenance of biogeochemical processes.

Published
2022
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3. Carbon metabolic rates and GHG emissions in different wetland types of the Ebro Delta.

Author

Daniel Morant, Antonio Picazo, Carlos Rochera, Anna C Santamans, Javier Miralles-Lorenzo, Alba Camacho-Santamans, Carles Ibañez, Maite Martínez-Eixarch, and Antonio Camacho

Subjects
Medicine, Science
Abstract

Deltaic wetlands are highly productive ecosystems, which characteristically can act as C-sinks. However, they are among the most threatened ecosystems, being very vulnerable to global change, and require special attention towards its conservation. Knowing their climate change mitigating potential, conservation measures should also be oriented with a climatic approach, to strengthen their regulatory services. In this work we studied the carbon biogeochemistry and the specific relevance of certain microbial guilds on carbon metabolisms of the three main types of deltaic wetlands located in the Ebro Delta, north-eastern Spain, as well as how they deal with human pressures and climate change effects. We estimated the metabolic rates of the main carbon-related metabolisms (primary production and respiration) and the resulting carbon and global warming potential balances in sites with a different salinity range and trophic status. With the results obtained, we tried to define the influence of possible changes in salinity and trophic level linked to the main impacts currently threatening deltaic wetlands, on the C-metabolisms and GHG emissions, for a better understanding of the mitigating capacity and their possible enhancement when applying specific management actions. Metabolic rates showed a pattern highly influenced by the salinity range and nutrients inputs. Freshwater and brackish wetlands, with higher nutrient inputs from agricultural runoff, showed higher C-capture capacity (around 220-250 g C m-2 y-1), but also higher rates of degradative metabolisms (aerobic respiration and CH4 emissions). Contrastingly, the rates of C-related metabolisms and C-retention of Salicornia-type coastal salt marshes were lower (42 g C m-2 y-1). The study of the microbial metacommunity composition by the16S RNA gene sequencing revealed a significant higher presence of methanogens in the salt marsh, and also higher metabolic potential, where there was significantly more organic matter content in sediment. Salinity inhibition, however, explained the lower respiration rates, both aerobic and anaerobic, and prevented higher rates of methanogenesis despite the major presence of methanogens. Conservation measures for these wetlands would require, overall, maintaining the sediment contributions of the river basin intending to overcome the regression of the Delta and its salt marshes in a climate change scenario. Particularly, for reducing degradative metabolisms, and favour C-retention, nutrient inputs should be controlled in freshwater and brackish wetlands in order to reduce eutrophication. In salt marshes, the reduction of salinity should be avoided to control increases in methanogenesis and CH4 emissions.

Published
2020
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4. Environmental and Human Drivers of Carbon Sequestration and Greenhouse Gas Emissions in the Ebro Delta, Spain

Author

Anna C. Santamans, Antonio Picazo, Maite Martínez-Eixarch, Antonio Camacho, Carlos Rochera, Daniel Morant, María Belenguer-Manzanedo, Alba Camacho-Santamans, Siobhan Fennessy, Javier Miralles-Lorenzo, and Carles Ibáñez

Subjects
Ebro delta, Environmental protection, Greenhouse gas, Environmental science, Carbon sequestration, Environmental stress, Carbon cycle
Published
2021
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5. The ecological role of permanent ponds in Europe: a review of dietary linkages to terrestrial ecosystems via emerging insects

Author

Lena Fehlinger, Benjamin Misteli, Daniel Morant, Noël Juvigny-Khenafou, David Cunillera-Montcusí, Fernando Chaguaceda, Olivera Stamenković, Julie Fahy, Vojtěch Kolář, Dariusz Halabowski, Liam N. Nash, Ellinor Jakobsson, Veronica Nava, Pietro Tirozzi, Pablo Urrutia Cordero, Julien Mocq, Alba Camacho Santamans, Jose Manuel Zamora-Marín, Pierre Marle, Teofana Chonova, Luca Bonacina, Margaux Mathieu-Resuge, Ena Suarez, Stephen E. Osakpolor, Pablo Timoner, Vesela Evtimova, Darmina Nita, Bruno M. Carreira, Kálmán Tapolczai, Joana Martelo, Rémi Gerber, Valentin Dinu, Jorge Henriques, Géza B. Selmeczy, Biljana Rimcheska, Fehlinger, L, Misteli, B, Morant, D, Juvigny-Khenafou, N, Cunillera-Montcusí, D, Chaguaceda, F, Stamenković, O, Fahy, J, Kolář, V, Halabowski, D, Nash, L, Jakobsson, E, Nava, V, Tirozzi, P, Cordero, P, Mocq, J, Santamans, A, Zamora, J, Marle, P, Chonova, T, Bonacina, L, Mathieu-Resuge, M, Suarez, E, Osakpolor, S, Timoner, P, Evtimova, V, Nita, D, Carreira, B, Tapolczai, K, Martelo, J, Gerber, R, Dinu, V, Henriques, J, Selmeczy, G, Rimcheska, B, Repositório da Universidade de Lisboa, Danube University Krems, Ecosystèmes, biodiversité, évolution [Rennes] (ECOBIO), Université de Rennes (UR)-Institut Ecologie et Environnement (INEE), Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR), Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS), RiverLy - Fonctionnement des hydrosystèmes (RiverLy), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Équipe 1 - Biodiversité et Adaptation dans les Hydrosystèmes (BAH), Laboratoire d'Ecologie des Hydrosystèmes Naturels et Anthropisés (LEHNA), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-École Nationale des Travaux Publics de l'État (ENTPE)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-École Nationale des Travaux Publics de l'État (ENTPE)-Centre National de la Recherche Scientifique (CNRS), Centre Alpin de Recherche sur les Réseaux Trophiques et Ecosystèmes Limniques (CARRTEL), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Bulgarian Academy of Sciences (BAS), and The EUROPONDS project was awarded as '3rd fresh project' (2020 - 2022) by the European Federation of Freshwater Sciences (EFFS), European Fresh and Young Researchers (EFYR), and representatives of the Fresh Blood for Fresh Water (FBFW). The funding is provided by the contributing EFFS societies: Association Française de Limnologie (AFL), Association of Austrian SIL Members (SIL Austria), Associazione Italiana di Oceanologia e Limnologia (AIOL), Asociación Ibérica de Limnología/Associação Ibérica de Limnologia (AIL), Deutsche Gesellschaft für Limnologie e.V. (DGL), Freshwater Biological Association (FBA), Hrvatsko Udruženje Slatkovodnih Ekologa (HUSEK), Magyar Hidrológiai Társaság (MHT), Polskie Towarzystwo Hydrobiologiczne (PTH), Schweizerische Gesellschaft für Hydrologie und Limnologie/Société Suisse d'Hydrologie et de Limnologie/Società Svizzera di Idrologia e Limnologia (SSHL).

Subjects
dietary subsidies, dietary subsidie, Ietary subsidies, Emergence of insects, Aquatic Science, small waterbodie, emergence of insects, aquatic insect, Small water bodies, pondscape, Aquatic insects, [SDE]Environmental Sciences, aquatic insects, emergence of insect, Water Science and Technology, small water bodies, biodiversity
Abstract

International audience; Permanent ponds are valuable freshwater systems and biodiversity hotspots. They provide diverse ecosystem services (ES), including water quality improvement and supply, food provisioning and biodiversity support. This is despite being under significant pressure from multiple anthropogenic stressors and the impacts of ongoing global change. However, ponds are largely overlooked in management plans and legislation, and ecological research has focused on large freshwater ecosystems, such as rivers or lakes. Protection of ponds is often insufficient or indirectly provided via associated habitats such as wetlands. This phenomenon is likely exacerbated due to lacking a full-scale understanding of the importance of ponds. In this review, we provided a detailed overview of permanent ponds across Europe, including their usages and the biodiversity they support. By discussing the concepts of pondscape and metacommunity theory, we highlighted the importance of connectivity among and between ponds and identified fluxes of emerging insects as another ES of ponds. Those insects are rich in essential nutrients such as polyunsaturated fatty acids (PUFA), which are delivered through them to the terrestrial environment, however the extent and impact of this ES remains largely unexplored. Several potential stressors, especially related to ongoing global change, which influence pond diversity and integrity were discussed. To conclude this review, we provided our insights on future pond management. Adaptive measures, taking into account the pond system per se within the pondscape, were found to be the most promising to mitigate the loss of natural ponds and restore and conserve natural small water bodies as refuges and diversity hotspots in increasingly urbanized landscapes.

Published
2022
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6. Impacts of diffuse urban stressors on stream benthic communities and ecosystem functioning: A review

Author

Miriam Colls, Aida Viza, Aitziber Zufiarre, Alba Camacho-Santamans, Alex Laini, Alexia Maria González-Ferreras, Ana Filipa Filipe, Ana Victoria Pérez-Calpe, Anna Freixa, Anna Lupon, Anna C. Santamans, Arunava Pradhan, Carmen Espinosa, Carmen Vera-Trujillo, Cayetano Gutiérrez-Cánovas, Clara Mendoza-Lera, Daniel Bruno, Daniel Mercado-Bettin, Daniel Morant, Daniela Batista, David Cunillera-Montcusi, Diana Graça, Eduard Vico-Oton, Edurne Estévez, Elizabeth Leon-Palmero, Ena Lucia Suarez, Encarnación Fenoy, Eva Lima, Félix Picazo, Francisco J. Oficialdegui, François Keck, Giulia Gionchetta, Ibor Sabas, Ignacio Pérez-Silos, Ilisa Antunes, Inmaculada Alvarez-Manzaneda, Ioar de Guzmán, Isabel Fernandes, Janine Pereira da Silva, Jing Wei, Jorge Juan Montes-Pérez, José Trabulo, José L. J. Ledesma, José Maria Fernandez-Calero, José Pedro Ramião, Juan Rubio-Rios, Juan David Gonzalez-Trujillo, Laura Barral-Fraga, Laura Jiménez, Lidia Vendrell-Puigmitja, Lluís Bertrans, Lluís Gomez-Gener, Lorenzo Rovelli, Lukas Thuile-Bistarelli, Marc Sanchez-Morales, Marco J. Cabrerizo, Maria Aranguren-Gassis, Maria Argudo, Maria J. Navarro-Ramos, Miren Atristain, Naiara Lopez-Rojo, Nicolás Valiente, Nuria Perujo, Olatz Pereda, Oriana Llanos-Paez, Oscar Belmar, Osvaldo Tascon-Peña, Pablo Rodriguez-Lozano, Raquel Sánchez de Pedro, Rebeca Arias-Real, Rossano Bolpagni, Rubén del Campo, Silvia Poblador, Simone Guareschi, Stephan Hilgert, Sofia Duarte, Tamara Rodriguez-Castillo, Teofana Chonova, Teresa Conejo-Orosa, Vanessa Céspedes, Verónica Granados, Victor Osorio, Víctor Vázquez, Víctor Martin-Vélez, and Ferran Romero

Subjects
Ecology, Aquatic Science, Water Science and Technology
Abstract

Catchment urbanisation results in urban streams being exposed to a multitude of stressors. Notably, stressors originating from diffuse sources have received less attention than stressors originating from point sources. Here, advances related to diffuse urban stressors and their consequences for stream benthic communities are summarised by reviewing 92 articles. Based on the search criteria, the number of articles dealing with diffuse urban stressors in streams has been increasing, and most of them focused on North America, Europe, and China. Land use was the most common measure used to characterize diffuse stressor sources in urban streams (70.7 % of the articles characterised land use), and chemical stressors (inorganic nutrients, xenobiotics, metals, and water properties, including pH and conductivity) were more frequently reported than physical or biological stressors. A total of 53.3 % of the articles addressed the impact of urban stressors on macroinvertebrates, while 35.9 % focused on bacteria, 9.8 % on fungi, and 8.7 % on algae. Regarding ecosystem functions, almost half of the articles (43.5 %) addressed changes in community dynamics, 40.3 % addressed organic matter decomposition, and 33.9 % addressed nutrient cycling. When comparing urban and non-urban streams, the reviewed studies suggest that urbanisation negatively impacts the diversity of benthic organisms, leading to shifts in community composition. These changes imply functional degradation of streams. The results of the present review summarise the knowledge gained to date and identify its main gaps to help improve our understanding of urban streams.

Published
2023
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7. Salinity reduces coastal marsh respiration more than photosynthesis

Author

Benjamin J. Wilson, Katherine L. Tully, Ellen R. Herbert, Evelyn E. Gaiser, Elena Solohin, Matthew L. Kirwan, Sean P. Charles, Ryan Bremen, Ashley M. Helton, Tiffany G. Troxler, Scott C. Neubauer, Antonio Camacho, Julia A. Cherry, K. S. Ishtiaq, Keryn B. Gedan, Michael J. Osland, John S. Kominoski, Gregory B. Noe, Alba Camacho-Santamans, Daniel Morant, Lukas Lamb-Wotton, and Ken W. Krauss

Subjects
Salinity, geography, Marsh, geography.geographical_feature_category, fungi, Botany, Respiration, Environmental science, Photosynthesis
Abstract

A paradigm in carbon cycling science predicts that sea-level rise will enhance carbon accumulation in an apparent negative carbon-climate feedback1,2. However, ecosystems exposed to combinations of stressors and subsidies – such as saltwater intrusion and sea-level rise – may adapt, transition to an alternative state, or experience a decline in functions, such as carbon storage, thereby altering their response trajectories to environmental changes3,4. Climate change is increasing salinity in coastal ecosystems worldwide yet the effects on ecosystem metabolism remain uncertain4-8. Here, we synthesized gross ecosystem productivity (GEP), ecosystem respiration [CO2 and CH4 (ERCO2 and ERCH4)], and net ecosystem productivity (NEP) from diverse coastal marshes exposed to experimental additions and observational gradients in salinity. Increases in salinity generally caused decreases in median GEP, ERCO2, and ERCH4 but increases in GEP and NEP from ~5 to 10 ppt. Increased saltwater intrusion can stimulate or stress wetlands based on relative exposure and acclimation to increased salinities, and we detected positive NEP where salinity increases had greater negative effects on ERCO2 and ERCH4 than GEP. Although increases in NEP are detectable at low salinities, saltwater intrusion and climate-driven disturbances may reduce carbon storage capacity of coastal ecosystems as productivity declines toward higher salinities.

Published
2021
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