On the decline of the Rusty Blackbird and the use of ornithological literature to document long-term population trends

Article Abstract:

Rusty Blackbirds (Euphagus carolensis), unlike most north American blackbirds, have shown steep population declines based on systematic analysis of regional guides and checklists. The decline is perhaps the result of acid precipitation, destruction of wooded wetlands at wintering areas, and conversion of boreal forest wetlands. The use of ornithological literature can be valuable in documenting long-term population trends, as is illustrated by use in the study of the Rusty Blackbirds, a study based on the Quebec Checklist Program, the Breeding Bird Survey, and the Christmas Bird Counts and abundance classifications in bird distribution books from the past.

Research, Usage, Statistics, Biological diversity conservation, Biodiversity conservation, Ornithology, Fringillids, Fringillidae

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On human population growth, natural selection, and the tragedy of the commons

Article Abstract:

Underlying the premise of human population growth is the complicated process of cultural evolution. While biology and genetic evolution provide certain predispositions to survivability, memes, or cultural influences, play a more significant role in population issues such as the decision to use contraceptives or the assumption that having children is desirable.

Social change, Social sciences, Population

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Error propagation in spatially explicit population models: a reassessment

Article Abstract:

Research presented concerns the ability of spatially explicit population models to accurately assess the effect of dispersal behavior on population rates. Topics addressed include a re-analysis of the spatial model, as well as the practicality of detailed landscape models as a conservation tool.

Statistical Data Included, Animal populations, Conservation of natural resources, Natural resource conservation, Population forecasting

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