A web app for population viability and harvesting analyses
نویسندگان
چکیده
منابع مشابه
A Numerus Population Viability and Harvesting Analyses Web App
Population viability analysis (PVA) is used to assess the probability that a biological population will persist for a specified period of time. Such models are typically cast as Markov processes that may include age, stage, sex and metapopulation structures, density-dependence and ecological interaction processes. They may also include harvesting, stocking, and thresholds that trigger intervent...
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Population viability analysis (PVA) packages do not always allow realistic simulation of particular life cycle features, so they may produce unrealistic predictions of extinction risk. This was suspected for a cycling Soay sheep population, Ovis aries L., that grows, overeats its habitat and then suers high winter mortality. We compared projections of PVA models for the sheep that incorporated...
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This paper presents a review of demographically structured (or, frequency-based) models, in which the individuals in a population are grouped into distinct classes. Structured models are used when vital rates (survival, reproduction, dispersal) of individuals depend on their age or physiological/morphological stage. Variation in these rates (environmental stochasticity) and the effect of abunda...
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ژورنال
عنوان ژورنال: Natural Resource Modeling
سال: 2016
ISSN: 0890-8575,1939-7445
DOI: 10.1111/nrm.12120