Results 141 to 150 of about 1,314,808 (196)

Food-web coupling by mobile consumers has individual to ecosystem level effects

open access: yes
Peller T   +6 more
europepmc   +1 more source

Food Webs

2023
Abstract In the past ten years the ability to leverage modern computational approaches with the increasing quantity of digitized archaeological data has enabled the analysis of archaeologically informed ecological networks. Food webs are a type of ecological network that represent the trophic interactions, or consumption links, within ...
Jennie R. B. MILLER, Oswald J. SCHMITZ
openaire   +2 more sources

Infectious food webs

Journal of Animal Ecology, 2009
Food webs, descriptions of who is eating whom in an ecosystem, are one of the most enduring and influential concepts in ecology. An increasing number of studies are including parasite-host feeding interactions in food webs, each providing evidence that parasites alter our perception of food web structure. Amundsen et al. in this issue report intriguing
Beckerman, A P, Petchey, O L
openaire   +2 more sources

Microbial food chains and food webs

Journal of Theoretical Biology, 1973
Abstract Mathematical models for simple microbial food chains and food webs in continuous culture are developed and analyzed. A model for competition of two microbial species for a single scarce resource is also presented as a degenerate case of the food web model. Two models for food chains are developed.
J L, Jost   +3 more
openaire   +2 more sources

The structure of food webs

Theoretical Population Biology, 1979
Abstract For nonrandom models of species interaction there is a precipitous decrease in stability as connectance increases. However, the range of stability for different models of the same connectance is large; stability also depends on how the species interactions are organized. Systems with species feeding on more than one trophic level (omnivores)
openaire   +2 more sources

Food Terrorism and Food Defense on the Web

Medical Reference Services Quarterly, 2008
Global food supplies are at risk of both accidental and deliberate contamination. As past incidents have demonstrated, food terrorism may cause social, economic, and political disruption. The United States increased its efforts to protect its food after 9/11 by broadening the roles of existing agencies, including the U.S.
openaire   +2 more sources

Food and Food Webs

1975
In each water mass a different amount of organic matter and inorganic salts is dissolved; some waters will be well fertilized with plant foods, others more poorly or even barren. There exist desert areas in the oceans as well as on the land. The Sargasso Sea is supposed to be one such desert, and there are others east of Sydney in the Tasman Sea, and ...
openaire   +1 more source

On Lumping Species in Food Webs

Ecology, 1998
Species in community food webs are commonly aggregated or lumped on the basis of overlap in predators and prey. This note reports an unexpected result of lumping species in observed food webs and simulated food webs. The main result is that it is much easier to lump species in observed webs than in simulated webs.
Andrew R. Solow, Andrew R. Beet
openaire   +1 more source

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