منابع مشابه
Historic and Modern Abundance of Wild Lean Lake Trout in Michigan Waters of Lake Superior: Implications for Restoration Goals
—Populations of lake trout Salvelinus namaycush in Lake Superior collapsed in the late 1950s due to overfishing and predation by sea lampreys Petromyzon marinus. A binational effort to restore the lean morphotype of lake trout began with the stocking of hatchery-reared fish followed by the chemical control of sea lampreys and closure of the commercial fishery. Previous comparisons of the contem...
متن کاملInferring recent historic abundance from current genetic diversity.
Recent historic abundance is an elusive parameter of great importance for conserving endangered species and understanding the pre-anthropogenic state of the biosphere. The number of studies that have used population genetic theory to estimate recent historic abundance from contemporary levels of genetic diversity has grown rapidly over the last two decades. Such assessments often yield unexpect...
متن کاملEffect of Game Management on Wild Red-Legged Partridge Abundance
The reduction of game and fish populations has increased investment in management practices. Hunting and fishing managers use several tools to maximize harvest. Managers need to know the impact their management has on wild populations. This issue is especially important to improve management efficacy and biodiversity conservation. We used questionnaires and field bird surveys in 48 hunting esta...
متن کاملHistoric Mining and Agriculture as Indicators of Occurrence and Abundance of Widespread Invasive Plant Species
Anthropogenic disturbances often change ecological communities and provide opportunities for non-native species invasion. Understanding the impacts of disturbances on species invasion is therefore crucial for invasive species management. We used generalized linear mixed effects models to explore the influence of land-use history and distance to roads on the occurrence and abundance of two invas...
متن کاملCould genetic diversity in eastern North Pacific gray whales reflect global historic abundance?
To the Editor: Alter et al. (1) use estimates of genetic diversity in eastern North Pacific gray whales, Eschrichtius robustus, to infer historic levels of abundance of this species in the North Pacific. However, the expected level of genetic diversity within local populations connected by gene flow to other populations is that of the global population (2). Alter et al. (1) assessed the possibl...
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ژورنال
عنوان ژورنال: Bulletin of the Brazilian Mathematical Society, New Series
سال: 2019
ISSN: 1678-7544,1678-7714
DOI: 10.1007/s00574-019-00191-8