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Food chain length is an important property of ecosystems, but the mechanisms maintaining it remain elusive. Classical views suggest that energetic inefficiencies (the ““energy-flow hypothesis””) limit food chain length, but others have argued that better explanations reside in more...
Due to differences in the structure of communities in which interactions are embedded, the intensity of interactions between species may vary with location; thus, what results from differences in outcomes and in degree of specialization is a geographic mosaic, which provides the raw material for...
Rich, Catherine, and Travis Longcore, editors. 2006. Ecological consequences of artificial night lighting . Island Press, Washington, D.C. xx ++ 458 p. $65.00 (cloth), ISBN: 1-55963-128-7 (alk. paper); $29.95 (paper), ISBN: 1-55963-129-5 (alk. paper).
Seed dispersal fundamentally influences plant population and community dynamics but is difficult to quantify directly. Consequently, models are frequently used to describe the seed shadow (the seed deposition pattern of a plant population). For vertebrate-dispersed plants, animal behavior is...
Examining the phenotypic and genetic underpinnings of life-history variation in long-lived organisms is central to the study of life-history evolution. Juvenile growth and survival are often density dependent in reptiles, and theory predicts the evolution of slow growth in response to low...
Source––sink dynamics are commonly thought to occur among Wood Thrush ( Hylocichla mustelina ) and other songbird populations, allowing for the persistence of populations with negative growth rates (““sinks””) through immigration from populations with positive growth rates...
Sediment-dwelling zoobenthos stimulate the mineralization of organic matter and alter nutrient cycling by aerating the sediment via burrows, by feeding on detritus, and by redistributing particles. Here we experimentally revealed that abundant benthic chironomids ( Chironomus riparius ) can...
Lianas (woody vines) are an important and dynamic component of many forests throughout the world, and increases in CO 2 , mean winter temperature, and forest fragmentation may promote their growth and proliferation in temperate forests. In this study, we used a 45-year data set to test the...
The concept of nitrogen (N) saturation has organized the assessment of N loading in terrestrial ecosystems. Here we extend the concept to lotic ecosystems by coupling Michaelis-Menten kinetics and nutrient spiraling. We propose a series of saturation response types, which may be used to...
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