Abundance and productivity of forest songbirds in a managed, unfragmented landscape in Vermont

Article Abstract:

Breeding songbirds in a landscape characterized by scattered openings in a forest matrix in the Green Mountains of Vermont were studied in 1993-94 to investigate reproductive success in landscapes dominated by forest cover. Specifically, songbird abundance and productivity on continuously forested study sites were compared with the same variables on similar sites with a moderate amount of canopy removal. Results showed that, at the landscape level, abundance and overall productivity of songbirds in the remaining forest were not affected by a minimal amount of canopy removal in the highly forested landscape.

Forest birds, Landscape, Green Mountains (North America)

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Edge- and area-sensitivity of shrubland birds

Article Abstract:

A study is conducted to examine the sensitivity of shrubland birds to the area of the shrub stands and proximity to mature-forest edges. Abundances of most species were positively correlated with area, though the combined area effect was not statistically significant and neither area nor edge was associated with habitat characteristics, fruit abundance, or arthropod biomass.

North America, Shrublands

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Effects of a chemical weapons incineration plant on red-tailed tropicbirds

Article Abstract:

Studies show that the Johnston Atoll Chemical Agent Disposal System on Johnston Island has had no discernible effect on the Phaethon rubricauda tropic-bird population within the research period. The research was conducted between 1990 and 2000 on P. rubricauda movement, reproductive success and survival in habitat locations both upwind and downwind of the incineration site.

Oceania, Statistical Data Included, Waste management, Incineration, Chemical weapons, Tropic-birds, Johnston Atoll

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