Stable-carbon and hydrogen isotope ratios reveal breeding origins of Red-winged Blackbirds

Article Abstract:

Results suggest that using stable-carbon and hydrogen isotope ratios are a reliable means of determining blackbird breeding origins along a latitudinal transect from Louisiana to Saskatchewan. The method was applied to the outer primary feathers, which determined dietary intake of carbon and precipitation exposure.

Canada, Statistical Data Included, Models, Genetic aspects, Carbon, Bird populations, Sexual behavior in animals, Animal sexual behavior, Animal genetics, Carbon isotopes, Hydrogen, Red-winged blackbird, Hydrogen isotopes

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Effects of exurban development on biodiversity: Patterns, mechanisms, and research needs

Article Abstract:

The existing knowledge on the effects of urban fringe development (UFD) and rural residential development in the United States is synthesized. It is found that many native species have reduced survival and reproduction near homes, and native species richness mostly drops in increased exurban densities.

Influence, Human beings, Human-environment interactions, Biological diversity conservation, Biodiversity conservation, Urban sprawl

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