Results 211 to 220 of about 272,790 (252)
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Intraguild predation reduces redundancy of predator species in multiple predator assemblage
Journal of Animal Ecology, 2006Summary Interference between predator species frequently decreases predation rates, lowering the risk of predation for shared prey. However, such interference can also occur between conspecific predators. Therefore, to understand the importance of predator biodiversity and the degree that predator species can be considered functionally interchangeable,
James E. Byers, Blaine D. Griffen
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Predation and Predator Management *
2019Predation has shaped many facets of the ecology of plovers, including their life history traits, behaviors, and demography. Moreover, conservation often emphasizes managing predators to increase population size. I reviewed literature addressing impacts of predation on survivorship and reproductive success of plovers, as well as four management ...
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1984
The first task faced by the writer of any book is the setting of limits around the material to be covered. This is primarily an exercise in definition and, as with any such exercise, is an invitation to dispute. Nearly every textbook dealing with ecology offers a unique definition of predation.
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The first task faced by the writer of any book is the setting of limits around the material to be covered. This is primarily an exercise in definition and, as with any such exercise, is an invitation to dispute. Nearly every textbook dealing with ecology offers a unique definition of predation.
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The Journal of Industrial Economics, 1988
ONE common assumption in the post-McGee [1958] predatory pricing literature has been that the predatory firm must be larger (have 'deeper pockets'), than the victim of the predation, usually an entrant. This assumption stems from a model of predation in which the contesting firms sell at levels below cost until one of the firms exits after exhausting ...
Hilke, John C, Nelson, Philip B
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ONE common assumption in the post-McGee [1958] predatory pricing literature has been that the predatory firm must be larger (have 'deeper pockets'), than the victim of the predation, usually an entrant. This assumption stems from a model of predation in which the contesting firms sell at levels below cost until one of the firms exits after exhausting ...
Hilke, John C, Nelson, Philip B
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Predating predators: An experimental study [PDF]
, 2001 Predating predators requires at least three specimen to which we refer as players 1, 2, and 3. Player 1 has simply to guess nature when trying to find food. Player 2 is hunting player 1 in the hope that 1 is well-fed but must also avoid being hunted by player 3.
Avrahami, Judith +2 more
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Spatial Economic Analysis, 2012
Abstract In a spatial economic context, we analyse the incentive to prey of an incumbent facing the potential entrance by a rival. We show that the existence of space modifies the incentive to prey of the incumbent and the resulting equilibrium.
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Abstract In a spatial economic context, we analyse the incentive to prey of an incumbent facing the potential entrance by a rival. We show that the existence of space modifies the incentive to prey of the incumbent and the resulting equilibrium.
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A predator's perspective of nest predation: predation by red squirrels is learned, not incidental
Oikos, 2009Nest predation has been used to explain aspects of avian ecology ranging from nest site selection to population declines. Many arguments rely on specific assumptions regarding how predators find nests, yet these predatory mechanisms remain largely untested.
James N. M. Smith +2 more
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Chapter 11 Predators and predation
2001Publisher Summary Most field predation studies on hard clams, Mercenaria mercenaria , focuses on elucidating information for aquaculture activities and involves manipulative experiments with some form of protection. The control conditions for these studies are used to examine some ecological relationships, but the plots are seeded at relatively high
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Analysis of a predator–prey system with predator switching
Bulletin of Mathematical Biology, 2004In this paper, we consider an interaction of prey and predator species where prey species have the ability of group defence. Thresholds, equilibria and stabilities are determined for the system of ordinary differential equations. Taking carrying capacity as a bifurcation parameter, it is shown that a Hopf bifurcation can occur implying that if the ...
Graeme C. Wake +2 more
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Impact of predator dormancy on prey-predator dynamics
Chaos: An Interdisciplinary Journal of Nonlinear Science, 2018The impact of predator dormancy on the population dynamics of phytoplankton-zooplankton in freshwater ecosystems is investigated using a simple model including dormancy, a strategy to avoid extinction. In addition to recently reported chaos-mediated mixed-mode oscillations, as the carrying capacity grows, we find surprisingly wide phases of nonchaos ...
Joana G. Freire +2 more
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