EXTINCTION-EFFECTIVE POPULATION INDEX: INCORPORATING LIFE-HISTORY VARIATIONS IN POPULATION VIABILITY ANALYSIS

Ecology ◽  
2007 ◽  
Vol 88 (9) ◽  
pp. 2345-2353 ◽  
Author(s):  
Masami Fujiwara
Keyword(s):  
Life History ◽  
Population Viability Analysis ◽  
Population Viability ◽  
Effective Population ◽  
Population Index ◽  
Viability Analysis

scholarly journals Population viability analysis and potential of its application to Danube sturgeons

2009 ◽  
Vol 61 (1) ◽  
pp. 123-128 ◽  
Author(s):  
I. Jaric ◽  
Mirjana Lenhardt ◽  
G. Cvijanovic ◽  
T. Ebenhard
Keyword(s):  
Life History ◽  
River Basin ◽  
Habitat Loss ◽  
Population Viability Analysis ◽  
Population Viability ◽  
Danube River ◽  
The Danube River ◽  
Viability Analysis ◽  
Sturgeon Species ◽  
Danube River Basin

Sturgeon species in the Danube River basin have experienced severe decline. Besides overexploitation, habitat loss, and pollution, they are further endangered by lack of efficient policy and management, as well as by serious lack of knowledge about their life history. Although population viability analysis (PVA) could represent an extremely valuable tool to cope with these problems, it has not so far been applied to Danube populations. This paper represents an assess?ment of different PVA methods and models developed for sturgeon species. It analyzes their results, main advantages, drawbacks, and problems, and discusses the possibility of applying PVA to sturgeon populations in the Danube River basin.

scholarly journals Can we reestablish a self-sustaining population? A case study on reintroduced Crested Ibis with population viability analysis

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Yashuai Zhang ◽  
Fang Wang ◽  
Zhenxia Cui ◽  
Min Li ◽  
Xia Li ◽  
...  
Keyword(s):  
Sex Ratio ◽  
Population Size ◽  
Carrying Capacity ◽  
Wild Population ◽  
Population Viability Analysis ◽  
Population Viability ◽  
Viability Analysis ◽  
Crested Ibis ◽  
Reintroduced Population

Abstract Background One of the most challenging tasks in wildlife conservation and management is clarifying which and how external and intrinsic factors influence wildlife demography and long-term viability. The wild population of the Crested Ibis (Nipponia nippon) has recovered to approximately 4400, and several reintroduction programs have been carried out in China, Japan and Korea. Population viability analysis on this endangered species has been limited to the wild population, showing that the long-term population growth is restricted by the carrying capacity and inbreeding. However, gaps in knowledge of the viability of the reintroduced population and its drivers in the release environment impede the identification of the most effective population-level priorities for aiding in species recovery. Methods The field monitoring data were collected from a reintroduced Crested Ibis population in Ningshan, China from 2007 to 2018. An individual-based VORTEX model (Version 10.3.5.0) was used to predict the future viability of the reintroduced population by incorporating adaptive patterns of ibis movement in relation to catastrophe frequency, mortality and sex ratio. Results The reintroduced population in Ningshan County is unlikely to go extinct in the next 50 years. The population size was estimated to be 367, and the population genetic diversity was estimated to be 0.97. Sensitivity analysis showed that population size and extinction probability were dependent on the carrying capacity and sex ratio. The carrying capacity is the main factor accounting for the population size and genetic diversity, while the sex ratio is the primary factor responsible for the population growth trend. Conclusions A viable population of the Crested Ibis can be established according to population viability analysis. Based on our results, conservation management should prioritize a balanced sex ratio, high-quality habitat and low mortality.

Unsustainable harvest of dugongs in Torres Strait and Cape York (Australia) waters: two case studies using population viability analysis

2004 ◽  
Vol 7 (4) ◽  
pp. 417-425 ◽  
Author(s):  
Robert Heinsohn ◽  
Robert C. Lacy ◽  
David B. Lindenmayer ◽  
Helene Marsh ◽  
Donna Kwan ◽  
...  
Keyword(s):  
Case Studies ◽  
Population Viability Analysis ◽  
Population Viability ◽  
Viability Analysis ◽  
Cape York ◽  
Torres Strait

Comment on sea lion population viability analysis

Polar Biology ◽  
2012 ◽  
Vol 35 (10) ◽  
pp. 1617-1618 ◽  
Author(s):  
Paul A. Breen ◽  
David J. Gilbert ◽  
Paul J. Starr
Keyword(s):  
Population Viability Analysis ◽  
Population Viability ◽  
Sea Lion ◽  
Viability Analysis
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