Spatial patchiness, individual-performance and predator impacts
Abstract:
Patchiness in abundance is common but estimates
of its importance in nature are rare. We show that increases in patchiness
in a natural population of predatory zooplankton can result in:
(1) reductions in the predation rates of most predators:
(2) substantial changes in the impact of a predator on its prey: and
(3) large differences between the per capita impact of the predator population and the predation rates of most individual predators. Our approach can be readily applied to other ecological interactions and communities.
Folt CL, Schulze PC, OIKOS 68 (3): 560-566 DEC 1993
(1) reductions in the predation rates of most predators:
(2) substantial changes in the impact of a predator on its prey: and
(3) large differences between the per capita impact of the predator population and the predation rates of most individual predators. Our approach can be readily applied to other ecological interactions and communities.
Folt CL, Schulze PC, OIKOS 68 (3): 560-566 DEC 1993
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