Wildfires cause rapid changes to estuarine benthic habitat DOI Creative Commons
Thayanne Lima Barros, Sally A. Bracewell, Mariana Mayer‐Pinto

et al.

Environmental Pollution, Journal Year: 2022, Volume and Issue: 308, P. 119571 - 119571

Published: June 2, 2022

Estuaries are one of the most valuable biomes on earth. Although humans highly dependent these ecosystems, anthropogenic activities have impacted estuaries worldwide, altering their ecological functions and ability to provide a variety important ecosystem services. Many stressors combine affect soft sedimentary habitats that dominate estuarine ecosystems. Now, due climate change, other marine areas might be increasingly exposed emerging threat megafires. Here, by sampling before after megafire, we describe impacts wildfires benthic justify why megafires new concerning coastal We (1) show change fundamental characteristics habitat, (2) identify factors (burnt intensity proximity water's edge) influence consequences fires estuaries, (3) relevant indicators wildfire impact: metals, nutrients, pyrogenic carbon. then discuss how can impact globally, regardless local variability differences in catchment. In first empirical assessment condition, our results highlight may assist waterway managers empirically detect catchment should included fire risk assessments for estuaries. Overall, this study highlights importance considering threats current future management.

Language: Английский

Extreme fire severity interacts with seed traits to moderate post‐fire species assemblages DOI Creative Commons
Michi Sano, Ryan Tangney, Alexandria Thomsen

et al.

American Journal of Botany, Journal Year: 2025, Volume and Issue: unknown

Published: March 17, 2025

Abstract Premise Climate change is globally pushing fire regimes to new extremes, with unprecedented large‐scale severe fires. Persistent soil seed banks are a key mechanism for plant species recovery after fires, but extreme severity may generate temperatures beyond thresholds seeds adapted to. Seeds protected from lethal through burial, decreasing increasing depth. However, smaller seeds, due their lower mass and corresponding energy stores, restricted emerging shallower depths compared the larger seeds. We examined recruitment patterns across landscape‐scale gradient of determine whether dormancy class mediate shifts in community assemblages. Methods surveyed 25 sites wet sclerophyll forests southeastern Australia that had been burnt at either moderate, high, or during 2019–2020 Black Summer Fires. measured abundance calculated density seedlings 27 common native shrub species. Results Extreme fires caused significant declines seedling recruitment. Recruitment differed between class, steeper emergence physiologically dormant (PD) than physically (PY) severity. Relative proportions size groups both PY PD Conclusions Large‐scale favor larger‐seeded species, shifting composition. Future recurrent events could therefore place smaller‐seeded risk. Seed mass, other traits should be considered when exploring post‐fire responses, better predict impacts on

Language: Английский

Citations

0
Rapid assessments accurately identify threatened Australian flora under IUCN Red List Criteria after megafires DOI
Tom Le Breton, Mark K. J. Ooi,

Sylvia E. Hay

et al.

Biological Conservation, Journal Year: 2025, Volume and Issue: 307, P. 111183 - 111183

Published: April 26, 2025

Language: Английский

Citations

0
What does it take to survive? An expert elicitation approach to understanding the drivers of fire Refugia occurrence and persistence DOI Creative Commons
Trent D. Penman, Alistair M. S. Smith,

J. Burton

et al.

Biological Conservation, Journal Year: 2025, Volume and Issue: 308, P. 111257 - 111257

Published: May 20, 2025

Language: Английский

Citations

0
Combining Spatial, Genetic, and Environmental Risk Data to Define and Prioritize In Situ Conservation Units DOI Creative Commons
Eilish S. McMaster, Richard Dimon, Andrew G. Baker

et al.

Ecology and Evolution, Journal Year: 2025, Volume and Issue: 15(5)

Published: May 1, 2025

ABSTRACT In situ management aims to preserve species and their genetic integrity within natural habitat. To achieve this, conservation strategies must strike a balance between safeguarding diversity, mitigating environmental risks, addressing practical constraints. Here, we present clear reproducible framework that addresses these goals. We applied this the Nightcap reserves in Gondwanan Rainforests of Australia, UNESCO World Heritage site impacted by 2019/20 Black Summer fires. analyzed diversity 12 rainforest tree species, including three endangered species— Eidothea hardeniana , Uromyrtus australis Elaeocarpus sedentarius —and examined how fire risk, influenced presence fire‐dependent such as eucalypts, impacts diversity. guide specific for developed flexible uses clustering algorithms (DBSCAN k ‐means) define spatial units while considering resource limitations (e.g., maximum perimeter or area). Our also incorporates composite value metric (combining Essential Biodiversity Variables heterozygosity, allelic richness, differentiation) evaluates future risk based on vegetation flammability. This approach allowed us identify priority areas adhering provide some examples proposed can be applied, either partially fully, optimize efforts. Its flexibility allows adjustments fit different habitat types, threats, making it valuable tool enhancing across diverse contexts.

Language: Английский

Citations

0
Wildfires cause rapid changes to estuarine benthic habitat DOI Creative Commons
Thayanne Lima Barros, Sally A. Bracewell, Mariana Mayer‐Pinto

et al.

Environmental Pollution, Journal Year: 2022, Volume and Issue: 308, P. 119571 - 119571

Published: June 2, 2022

Estuaries are one of the most valuable biomes on earth. Although humans highly dependent these ecosystems, anthropogenic activities have impacted estuaries worldwide, altering their ecological functions and ability to provide a variety important ecosystem services. Many stressors combine affect soft sedimentary habitats that dominate estuarine ecosystems. Now, due climate change, other marine areas might be increasingly exposed emerging threat megafires. Here, by sampling before after megafire, we describe impacts wildfires benthic justify why megafires new concerning coastal We (1) show change fundamental characteristics habitat, (2) identify factors (burnt intensity proximity water's edge) influence consequences fires estuaries, (3) relevant indicators wildfire impact: metals, nutrients, pyrogenic carbon. then discuss how can impact globally, regardless local variability differences in catchment. In first empirical assessment condition, our results highlight may assist waterway managers empirically detect catchment should included fire risk assessments for estuaries. Overall, this study highlights importance considering threats current future management.

Language: Английский

Citations

14