作者: Gregory S. Keller , Bradley D. Ross , David S. Klute , Richard H. Yahner
DOI: 10.1656/045.016.N404
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摘要: Abstract Edge created through forest fragmentation can have significant impacts on the avian community, increasing predation and nest-parasitism rates changing species richness abundance patterns near edges. Although considerable research has demonstrated edge effects during breeding season, few studies considered how proximity to an affects migrant communities in stopover habitat. We studied bird southern Pennsylvania (Adams, Chester, Montgomery counties) determine if of migrants were impacted by edges spring fall 1999–2001. The three categories study sites north-facing forest-herbaceous edges, south-facing interior (>300 m from edge); located Gettysburg National Military Park-Eisenhower Historic Site (GETT-EISE) Valley Forge Historical Park. During migration, Nearctic-Neotropic was significantly (P = 0.03) higher in...