Population Regulation and Character Displacement in a Seasonal Environment
作者： Emma E. Goldberg , Russell Lande , Trevor D. Price
DOI: 10.1086/665649
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摘要: Abstract Competition has negative effects on population size and also drives ecological character displacement, that is, evolutionary divergence to utilize different portions of the resource spectrum. Many species undergo an annual cycle composed a lean season intense competition for resources breeding season. We use quantitative genetic model study differential reproductive output in summer or displacement winter nonbreeding The is developed with reference avian family Old World leaf warblers (Phylloscopidae), which breed temperate regions Eurasia tropical subtropical regions. Empirical evidence implicates strong density-dependent regulation driven by food shortage, but paradoxically, relative abundance each appears be determined conditions summer. show how two seasons becomes linked, higher outp...
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