A Model of Ecosystems Having Plural Species in Each Trophic Level

Florida Bay Synthesis Higher Trophic Level Species 4 / 9 / 2003 8 - 1 Higher Trophic Level Species

Damped trophic cascades driven by fishing in model marine ecosystems.

The largest perturbation on upper trophic levels of many marine ecosystems stems from fishing. The reaction of the ecosystem goes beyond the trophic levels directly targeted by the fishery. This reaction has been described either as a change in slope of the overall size spectrum or as a trophic cascade triggered by the removal of top predators. Here we use a novel size- and trait-based model to...

Shift in trophic level of Mediterranean mariculture species.

The mean trophic level of the farmed fish species in the Mediterranean has been increasing. We examined the farming-up hypothesis (i.e., the increase in the production of high-trophic-level species) in the Mediterranean by determining the trophic level of the aquafeeds (i.e., what the fish are fed) of 5 species of farmed marine fishes: common dentex (Dentex dentex), common pandora (Pagellus ery...

Community Structure and Trophic Level Interactions in the Terrestrial Ecosystems: A Review

Organisms have their own patterns of distribution and biological organizations functioning in the natural system. Community is one of the hierarchies of ecological organizations composed of different species of organisms interacting in space and time. Photosynthesis is the fundamental biological process by which radiant energy is converted to chemical energy and thereby readily becomes availabl...

Community Structure and Trophic Level Interactions in the Terrestrial Ecosystems: A Review

Organisms have their own patterns of distribution and biological organizations functioning in the natural system. Community is one of the hierarchies of ecological organizations composed of different species of organisms interacting in space and time. Photosynthesis is the fundamental biological process by which radiant energy is converted to chemical energy and thereby readily becomes availabl...