Fire frequency matters more than fire size: Testing the pyrodiversity–biodiversity paradigm for at-risk small mammals in an Australian tropical savanna

Autor:	Anthony D. Griffiths, Barry W. Brook, Stephen T. Garnett
Rok vydání:	2015
Předmět:	education.field_of_study Extinction Fire regime Ecology Agroforestry Population Biodiversity Tropical savanna climate Population viability analysis Geography Threatened species Fire ecology education Ecology Evolution Behavior and Systematics Nature and Landscape Conservation
Zdroj:	Biological Conservation. 186:337-346
ISSN:	0006-3207
Popis:	Patch-mosaic burning is a widely accepted practical approach to managing biodiversity, whereby spatial and temporal diversity of fire is manipulated to benefit biotic diversity. We use simulation experiments based on stochastic population viability analysis to evaluate the implications of contrasting patch-mosaic burning scenarios for the population dynamics and risk of decline of four species of small mammals in northern Australia. Our results, based on models developed from detailed mark-recapture data, suggest that fire frequency has more influence on small-mammal persistence than fire extent. Risk of extinction increased for all four species when fire frequency exceeded once every five years. Under current ambient fire regimes most Australia tropical savannas burn more frequently and therefore seem to have unfavourable consequences for this faunal group and risk precipitating severe future declines.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6e4dbe907913727d67e8e87b383dc80d https://doi.org/10.1016/j.biocon.2015.03.021 Zobrazit plný text záznamu Full Text from ScienceDirect