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THE ECOLOGY AND EVOLUTION OF INTRAGUILD PREDATION: Potential Competitors That Eat Each Other
The purpose is to document the ubiquity and importance of intraguild predation and to establish a theoretical framework for its analysis, which is the first synthesis of IGP into a general work.
TOWARD AN INTEGRATION OF LANDSCAPE AND FOOD WEB ECOLOGY : The Dynamics of Spatially Subsidized Food Webs
We focus on the implications of movement, landscape variables, and spatial heterogeneity for food web dynamics. Movements of nutrients, detritus, prey, and consumers among habitats are ubiquitous in…
The Evolution and Dynamics of Intraspecific Predation
- G. Polis
- Environmental Science
- 1 November 1981
One of the purposes is to establish a theoretical framework for the organization and interpretation of the numerous observations of intraspecific predation.
A Theoretical Framework for Intraguild Predation
The consequences of incorporating IGP into standard models of exploitative competition and food chains (a general resource-consumer model, a Lotka-Volterra food chain model, and Schoener's exploitative Competition model) are explored and a general criterion for coexistence in IGP systems is suggested.
Food Web Complexity and Community Dynamics
It is concluded that trophic cascades and top-down community regulation as envisioned by trophIC-level theories are relatively uncommon in nature.
Complex Trophic Interactions in Deserts: An Empirical Critique of Food-Web Theory
- G. Polis
- Environmental ScienceThe American Naturalist
- 1 July 1991
It is argued that most cataloged webs are oversimplified caricatures of actual communities, and patterns from food webs of real communities generally do not support predictions arising from dynamic and graphic models of food-web structure.
The Biology of Scorpions
- G. Polis
- Environmental Science, Biology
- 1 May 1990
An up-to-date synthesis of all that is known about scorpions is presented, covering anatomy and morphology, systematics, biogeography, and palaeontology.
Linking Marine and Terrestrial Food Webs: Allochthonous Input from the Ocean Supports High Secondary Productivity on Small Islands and Coastal Land Communities
It is proposed that such flow is often a key feature of the energetics, structure, and dynamics of populations, food webs, and communities whenever any two habitats, differing in productivity, are juxtaposed.
Intraguild predation: The dynamics of complex trophic interactions.
Nutrient fluxes from water to land: seabirds affect plant nutrient status on Gulf of California islands
It is suggested that nutrient enrichment via guano ramifies to affect the entire food web on hyperarid, naturally nutrient poor islands in the Gulf of California, where nutrient input via seabird guano directly increases N and P concentrations up to 6-fold in soils; these nutrients enrich plants.