European Starlings and their effect on native cavity-nesting birds

Article Abstract:

The mean densities of 27 native cavity-nesting birds before and after invasion of sites by the European Starlings suggest that only a small number of bird species are affected by the invasion. Data reveal only sapsuckers show significant decline which is attributable to starlings. Together, research indicates that the impact of starling invasion on populations of native birds is modest.

Influence, Bird populations, Starlings, Invasive species, Introduced species

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Accidentally on purpose

Article Abstract:

This article argues about the use of the word 'purpose' with reference to nature and universe. The author contends that purpose originated along with the first evolution of a species capable of remembering the past and the future besides being aware of the present.

Observations, Natural selection, Evolution (Biology), Origin of species, Letter to the Editor

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Simulating historical variability in the amount of old forests in the Oregon Coast Range

Article Abstract:

Results suggest that historical age-class distibution is highly variable and is inversely related to landscape size. Further, management of old forests based on historical variabilities is feasible only with large landscape areas.

Statistical Data Included, Usage, Environmental aspects, Portrayals, Variation (Biology), Forest conservation, Landscape assessment, Fire ecology

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