Application of multiple-population viability analysis to evaluate species recovery alternatives

Application of multiple-population viability analysis to evaluate species recovery alternatives

© 2019 Society for Conservation Biology.

Bibliographische Detailangaben
Veröffentlicht in:Conservation biology : the journal of the Society for Conservation Biology. - 1999. - 34(2020), 2 vom: 17. Apr., Seite 482-493
1. Verfasser: Neville, Helen M (VerfasserIn)
Weitere Verfasser: Leasure, Douglas R, Dauwalter, Daniel C, Dunham, Jason B, Bjork, Robin, Fesenmyer, Kurt A, Chelgren, Nathan D, Peacock, Mary M, Luce, Charles H, Isaak, Daniel J, Carranza, Lee Ann, Sjoberg, Jon, Wenger, Seth J
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2020
Zugriff auf das übergeordnete Werk:Conservation biology : the journal of the Society for Conservation Biology
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. amenazada conservation planning decision-support tools en peligro endangered extinction risk herramientas de apoyo de decisiones mehr... hierarchical Bayesian model modelo bayesiano jerárquico planeación de la conservación planeación de la recuperación recovery planning threatened 保护规划 决策支持工具 受胁迫 层次贝叶斯模型 恢复规划 濒危 灭绝风险
Beschreibung
Zusammenfassung:© 2019 Society for Conservation Biology.
Population viability analysis (PVA) is a powerful conservation tool, but it remains impractical for many species, particularly species with multiple, broadly distributed populations for which collecting suitable data can be challenging. A recently developed method of multiple-population viability analysis (MPVA), however, addresses many limitations of traditional PVA. We built on previous development of MPVA for Lahontan cutthroat trout (LCT) (Oncorhynchus clarkii henshawi), a species listed under the U.S. Endangered Species Act, that is distributed broadly across habitat fragments in the Great Basin (U.S.A.). We simulated potential management scenarios and assessed their effects on population sizes and extinction risks in 211 streams, where LCT exist or may be reintroduced. Conservation populations (those managed for recovery) tended to have lower extinction risks than nonconservation populations (mean = 19.8% vs. 52.7%), but not always. Active management or reprioritization may be warranted in some cases. Eliminating non-native trout had a strong positive effect on overall carrying capacities for LCT populations but often did not translate into lower extinction risks unless simulations also reduced associated stochasticity (to the mean for populations without non-native trout). Sixty fish or 5-10 fish/km was the minimum reintroduction number and density, respectively, that provided near-maximum reintroduction success. This modeling framework provided crucial insights and empirical justification for conservation planning and specific adaptive management actions for this threatened species. More broadly, MPVA is applicable to a wide range of species exhibiting geographic rarity and limited availability of abundance data and greatly extends the potential use of empirical PVA for conservation assessment and planning
Beschreibung:Date Completed 21.07.2020
Date Revised 21.07.2020
published: Print-Electronic
Citation Status MEDLINE
ISSN:1523-1739
DOI:10.1111/cobi.13385