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Understanding broad trends in the distribution and composition of wetlands is essential for making evidence‐based management decisions. Determining temporal change in the extent of inundation in wetlands using remote sensing remains challenging and requires on‐ground verification to determine accuracy and precision. Therefore, optimization and validation of remote sensing methods in threatened wetlands is a high priority for their conservation. Despite their ecological importance in the landscape, we have little knowledge of the variation in the spatial extent of inundation in upland lagoons, a threatened ecological community in New South Wales, Australia. Our project developed locally trained algorithms to predict the extent of water and emergent vegetation using imagery from the Landsat‐5, ‐7, and ‐8 satellites. The best model for upland lagoons used shortwave infrared reflectance (performing better than normalized difference spectral indices), with model accuracy against validation transects greater than 95%. We applied the model to images from 1988 to 2020 across 58 lagoons to generate a dataset that demonstrates the variable water regime and vegetation change in response to local rainfall over 32 years such as in the lagoons. Our results reduce threats to a dynamic threatened ecological community by filling an important knowledge gap and demonstrate a valuable method to understand historical and current changes in the hydrology of dynamic wetland systems more broadly. [ABSTRACT FROM AUTHOR]

Indigenous knowledge emphasises the importance of cultural connections between humans and the biophysical world. In the face of threats to the maintenance and transfer of Indigenous knowledge, novel approaches such as seasonal calendars are emerging as tools to share knowledge and guide management of natural and cultural resources. The renewal of Indigenous cultural fire management in southeast Australia provided an opportunity to explore whether the co‐production of a fire and seasons calendar, using Western and Indigenous knowledges, can support cultural fire management. We present a case study of cross‐cultural collaboration between scientists and the Banbai Aboriginal rangers at Wattleridge Indigenous Protected Area, New South Wales. We reviewed literature from various disciplines (archaeological, ethnohistorical, Indigenous and ecological) and undertook participatory action research and interviews to collate relevant information. This was synthesised in Winba = Fire, the Banbai Fire and Seasons Calendar, which is used by the Banbai rangers to guide cultural burning, share cross‐cultural knowledge and increase awareness of Indigenous cultural fire management. The process of co‐producing knowledge, revitalising culture, caring for Country, working together and supporting self‐determination is relevant for many Indigenous communities around the world. [ABSTRACT FROM AUTHOR]

Environmental degradation is threatening biodiversity and ecosystem function globally. Mandating ecosystem-level protection in policy and legislative frameworks is essential to prevent biodiversity loss. Australia's Environment Protection and Biodiversity Conservation Act 1999 is the key legislative mechanism for supporting biodiversity at the national level, but has so far been ineffective at protecting habitat and ecological communities. Here we identify a major flaw in the current approach to listing threatened ecological communities (TECs): restrictive condition thresholds that threaten ecosystem function in dynamic ecosystems. Using two wetland TECs as a case study (Upland Wetlands and Coolibah-Black Box Woodlands), we argue that Australia's environmental legislation should adopt a landscape-scale approach to TEC protection that acknowledges ecosystem function, accounts for different states in temporally dynamic systems, and sustains landscape connectivity of TEC distribution. We present a state-and-transition model for each TEC to show how human activities affect the reference-state continuum of wet and dry phases. We also show that the current listed condition thresholds do not acknowledge alternative ecosystem states and exclude areas that may be important for restoration and conservation of the TEC at the landscape-scale. Description of alternative and transitional states for dynamic systems, including how, when and why ecological communities shift between different states, should be formally integrated into the TEC listing process to protect Australia's vulnerable ecosystems from further degradation and loss. We identify a major flaw in the EPBC Act listing framework for threatened ecological communities: restrictive condition thresholds that threaten ecosystem function in dynamic ecosystems. Description of alternative states for dynamic systems should be formally integrated into listing processes to protect Australia's vulnerable ecosystems from further degradation and loss. [ABSTRACT FROM AUTHOR]

Aims: Ecosystems nationally at risk in Australia are listed under the Environmental Protection and Biodiversity Act (EPBC Act), and many cross State jurisdictional boundaries. The determination of these ecosystems across the State boundaries are based on expert knowledge. The International Vegetation Classification has the potential to be useful as a cross-jurisdictional hierarchy which also gives global perspective to ecosystems. Study Area: All bioregions that include Eucalyptus populnea as a dominant or major component of woodlands across the species known distribution. Methods: We use plot-based data (455 plots) from two states (Queensland and New South Wales) in eastern Australia and quantitative classification methods to assess the definition and description for the Poplar Box Woodland ecosystem type (hereafter "ecological community" or "community") that is listed as endangered under the EPBC Act. Analyses were conducted using kR-CLUSTER methods to generate alliances. Within these alliances, analyses were undertaken to define associations using agglomerative hierarchical clustering and similarity profile testing (SIMPROF). We then explore how assigning this community into the IVC hierarchy may provide a mechanism for linking Australian communities, defined at the association and alliance levels, to international communities at risk. Results: We define three alliances and 23 associations based on the results of floristic analysis. Using the standard rule-set of the IVC system, we found that the IVC hierarchy was a useful instrument in correlating ecological communities across jurisdictional boundaries where different classification systems are used. It is potentially important in giving a broader understanding of communities that may be at risk continentally and globally. Conclusions: We conclude that the IVC hierarchy can incorporate Australian communities at the association level into useful units at higher levels, and provides a useful classification tool for Australian ecosystems. [ABSTRACT FROM AUTHOR]

Aims: To use unsupervised techniques to produce a hierarchical classification of grasslands on coastal headlands of New South Wales in eastern Australia. Methods: A dataset of 520 vegetation plots scored on cover and placed across grasslands on coastal headlands (ca. 2000 km of coastline). Vegetation assemblages were identified with the aid of a clustering method based on group averaging and tested using similarity profile analysis (SIMPROF) using Bray-Curtis similarity. A hierarchical schema was developed based on EcoVeg hierarchy and was circumscribed using positive and negative diagnostic taxa via similarity percentage analysis (SIMPER) and importance based on summed cover scores and frequency. Mapping the occurrences grasslands was initially constructed using remote sensing which was verified and modified with on ground observations. Results: One group Themeda - Pultenaea - Zoysia - Cynodon grasslands and heathy grasslands was defined to include all coastal headland grassland vegetation of the New South Wales, and within this, three alliances and ten associations. Only one of the circumscribed associations is represented within the current state classification schema. In total 107 ha were mapped of which 68 ha occurred within secure conservation tenure. Conclusions: A number of unique and rare grassland assemblages on coastal headlands have to date gone undescribed. The most common alliance constitutes approximately 87% of extant grassland occurrences but is currently the only type listed as endangered and afforded protection. Although Poa spp. are listed as a threat to Themeda dominated assemblages on headlands data from this study suggest that this is unlikely to be the case. [ABSTRACT FROM AUTHOR]

Aims: To use unsupervised techniques to produce a hierarchical classification of montane mires of the study region. Study area: New England Tablelands Bioregion (NETB) of eastern Australia. Methods: A dataset of 280 vascular floristic survey plots placed across the variation in montane mires of the NETB was collated. Vegetation types were identified with the aid of a clustering method based on group averaging and tested using similarity profile analysis (SIMPROF) and through ordinations using Bray-Curtis similarity and non-metric multidimensional scaling (NMDS). A hierarchical schema was developed based on EcoVeg hierarchy and was circumscribed using positive and negative diagnostic taxa via similarity percentage analysis (SIMPER) and importance based on summed cover scores and frequency. Results: We defined one macrogroup to include all montane mire vegetation of the NETB and within these two groups and twelve alliances. Conclusions: Our study re-enforced the separation of bogs from other montane mire systems and confirmed the separation of fens and wet meadows, a distinction that previously had not been independently tested. Based on our results many existing montane mire communities of the NETB have been ill-defined at multiple hierarchical levels, leading to confusion in threat status and mapping. Additionally, nearly half of the alliances we recognise were found to have no correlates within current classification systems, which necessarily has implications for the effectiveness of current conservation planning. [ABSTRACT FROM AUTHOR]

Globally, Indigenous cultural burning has been practiced for millennia, although colonization limited Indigenous people's ability to access and manage their ancestral lands. Recently, recognition of Indigenous fire management has been increasing, leading to the re-emergence of cultural burning in Australia, the Americas, parts of Asia and Africa. We describe how the Banbai people of south-eastern Australia have reintroduced cultural burning at Wattleridge Indigenous Protected Area. Our team of Banbai Rangers and non-Indigenous scientists conducted cross-cultural research to investigate the impact of burning on a cultural keystone species, the Short-beaked echidna (Tachyglossus aculeatus). Our comparison of the effects of a low-intensity, patchy, cultural fire in the Wattleridge Indigenous Protected Area to a nearby higher intensity fire in Warra National Park through a Before-After-Control-Impact assessment indicated that the higher intensity fire reduced echidna foraging activity, possibly to avoid predation. Most importantly, we describe a cross-cultural research model whereby Indigenous rangers and non-Indigenous scientists work together to inform adaptive natural and cultural resource management. Such trans-disciplinary and collaborative research strengthens informed conservation decision-making and the social-ecological resilience of communities. [ABSTRACT FROM AUTHOR]

We review vascular plant plot survey data, plot-based terrestrial vegetation classification protocols and schema by state and bioregions across Australia, discussing recent regional approaches in States and bioregions. A high degree of inconsistency exists in vegetation classification methods and management of plot data across jurisdictions and Australia currently lacks a unified national vegetation plot database, vegetation plot-recording protocols and agreed thematic outputs for classification. Broad-scale classifications were developed largely to support vegetation mapping based on remote sensing of image patterns. Since the 1970s, plot datasets from well-sampled regions have been subjected to a range of analyses (sometimes numerical) producing finer-scaled but idiosyncratic classifications. There are robust numerical classifications for less than 5% of the Australian continent. In poorly sampled and plot-free regions, vegetation classification has focussed on expert description or hybrid approaches using patchy quantitative outputs where they exist. A rigorous quantitative continental regional to local scale approach to classification will not be possible until major data gaps are filled. Additionally, the impact of Australia's inconsistent rainfall on species composition and abundance in analyses of combined datasets requires careful consideration. Given that vegetation classification is integral to Australian biodiversity laws and regulations, there would be benefits in extending quantitative plot coverage to data-poor areas, encouraging cross jurisdictional co-operation of classification procedures, promoting the use of comparable methodologies and sampling under different disturbance and climatic regimes. The development of a consistent vegetation classification across Australia will also require inter-state co-operation, higher standards of plot data curation and plant taxa nomenclature, agreed nation-wide classification protocols and a scientifically defensible hierarchical classification that should integrate with the International Vegetation Classification (IVC). [ABSTRACT FROM AUTHOR]

We surveyed subtropical closed tussock grasslands on headlands within the North Coast Bioregion of New South Wales. The aims of the investigation were to provide baseline data on this listed threatened community. Additionally, we tested 'he effects of macropod grazing and biomass changes on assemblages. In total, 117 full floristic survey plots were placed within extant natural grassland occurrences on 16 headlands. Data collected included the percentage cover and frequency of each species. In addition, we ranked the three species contributing most to overall biomass. Analysis of the full floristic cover data (percentage cover) was performed using the Kulzynski association measure and Unweighted Pair Group Arithmetic Averaging fusion strategy. Further analysis was performed using constrained and unconstrained ordinations and Generalised Additive Modelling using species frequency data and explanatory variables including overall, and proportional species biomass, and macropod grazing impact. Seven distinct grassland assemblages were derived, of which three were Themeda dominated. Concentrating on the Themeda-AommsAsd assemblages, it was found that increasing biomass depth and a reduction in macropod grazing impact were associated with a reduction in plot species richness and diversity and trait richness and diversity. These changes were associated with a shift in floristic assemblage identity. All three Themeda assemblages are likely to provide a unique combination of functional resources anc all should be maintained in order to promote landscape diversity. We predict that use of frequent fire is likely to cause homogenisation (reduced landscape richness) and loss of important components including listed threatened taxa. [ABSTRACT FROM AUTHOR]

Tree hollow number is investigated across an altitudinal and climatic gradient in eastern Australia. The relationship between seasonal climate and local site factors to hollow number at a regional scale was investigated. Moisture retention, rainfall, and solar radiation during the summer period were the highest contributing factors to hollow number in the model presented. The relationship of hollow number with the significant variables was unimodal in nature with either extreme causing a decline within the region. The results indicate that increased seasonality of rainfall, solar radiation, and temperatures as predicted by anthropogenic climate change will cause a shift in the optimal location for hollow number. Change in tree hollows is reliant on taxonomic replacement through dispersal and establishment and subsequently time to allow individuals to mature. The reduction in this resource stimulated by changes in seasonality predicted within the ensuing decades is likely to cause a loss of hollows across the landscape with the resource not being replaced for hundreds of years. The number of hollows within a landscape may drastically reduce due to climate change alone irrespective of tree clearing rates. [ABSTRACT FROM AUTHOR]

The article it examines the survival of plants from the population of A. williamsiana after a wildfire and intervening drought in Australia. The A. williamsiana resilience model has predicted a gradual decline in population energy with repeated cycles of fire and drought. Results show that caution is needed with fire management in communities with this rare plant as well as caution in implementing hazard reduction burning programmes.

Abstract Aim To investigate if the current theories associated with recruitment strategies are sufficient to explain differences in the proportions of obligate seeders and resprouters on inselbergs and in the matrix. Location The New England Batholith of eastern Australia. Methods The importance of life form and regenerative response of flora species are compared for twenty-four archipelagos of inselbergs habitat islands and for their adjacent matrix. Forward stepwise multiple linear regression is used to correlate measured and modelled variables with differences in the proportional abundance of obligate seeders on inselbergs at three levels of sampling. Results A total of 216 inselbergs were surveyed and information on 826 vascular plant species was collated. Herbs were the most common life form both on and off inselbergs. There were generally more shrubs on inselbergs than in the matrix. Resprouters were more common everywhere. However, obligate seeders were proportionately more common on inselbergs. The degree of insularity of outcrop floras accounted for 23–37% of the variance in the proportional abundance of obligate seeders at three sampling scales. Main conclusions A model is proposed whereby the mechanisms that influence the abundances of obligate seeders and resprouters are different on inselbergs and in the matrix. Inselberg environments are harsh, arid, have limited safe recruitment sites and below ground resources, but are not light limited. In such habitats, obligate seeders with persistence life-history traits are favoured. Within the matrix in eastern Australia frequent biomass removal disturbances occur (such as fire) and resprouting is advantageous. High turnover obligate seeders with no persistence life-history traits can be favoured in the matrix with a reduced disturbance regime and where competition for light still occurs. Some of these matrix obligate seeders occur on inselbergs due to their infrequent disturbance regimes. [ABSTRACT FROM AUTHOR]