Patch use as an indicator of habitat preference, predation risk, and competition

Brown, Joel S.

doi:10.1007/bf00395696

Cited by 1,216 publications

(1,623 citation statements)

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“…For instance, foraging animals that balance energy intake and expenditure are expected to choose to forage in areas that are safest from predators even when these areas are less rewarding (Brown, 1988;van Gils et al, 2004;Houston & McNamara, 1999). Other individuals may forage in more danger-prone ways, for instance because hunger forces them to exploit the rewards of dangerous areas (see studies reviewed in Lima & Dill, 1990), or because inferior competitive abilities and inexperience prevent them from satisfying their daily requirements in the presence of dominants (Cresswell, 1994;Parker & Sutherland, 1986).…”

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confidence: 99%

Interference from adults forces young red knots to forage for longer and in dangerous places

et al. 2014

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Interference from adults forces young red knots to forage for longer and in dangerous places

et al. 2014

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“…This problem has been studied extensively in behavioral ecology; one general conclusion of these studies has been that an organism should leave a patch only if the expected fitness is higher for emigrants than for residents (Charnov 1976;Brown 1988). The response of a single individual could thus be described by a step function, e.g.…”

Section: Discussionmentioning

confidence: 99%

Population-level consequences of heterospecific density-dependent movements in predator–prey systems

Sjödin

Brännström

Söderquist

et al. 2014

Journal of Theoretical Biology

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In this paper we elucidate how small-scale movements, such as those associated with searching for food and avoiding predators, affect the stability of predator-prey dynamics. We investigate an individual-based Lotka-Volterra model with density dependent movement, in which the predator and prey populations live in a very large number of coupled patches. The rates at which individuals leave patches depend on the local densities of heterospecifics, giving rise to one reaction norm for each of the two species. Movement rates are assumed to be much faster than demographics rates. A spatial structure of predators and prey emerges which affects the global population dynamics. We derive a criterion which reveals how demographic stability depends on the relationships between the per capita covariance and densities of predators and prey. Specifically, we establish that a positive relationship with prey density and a negative relationship with predator density tend to be stabilizing. On a more mechanistic level we show how these relationships are linked to the movement reaction norms of predators and prey. Numerical results show that these findings hold both for local and global movements, i.e., both when migration is biased towards neighboring patches and when all patches are reached with equal probability.

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“…50% of the world's population is still engaged in farming, forestry and fishing. This proportion becomes 70% if we take the sub-Sahara, Asian and Pacific countries alone [3], [4].…”

Section: Introductionmentioning

confidence: 99%

Landscape Degradation and Restoration — A Planning Approach

Venodha¹

2016

IJESD

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Abstract-Ecology is more related to landscape planning in which public spaces around the future needs of a region is designed. Nature conservation sites receive protection through planning processes. There are also conservation policies, which are implemented through planning processes. Planning processes related to ecological assessments are considered as the best practice which requires planning permission to undertake construction projects. In terms of conserving nature, planning plays a significant role in creating traffic free routes, construction that is significant area of habitats, proposal on protected areas, proposal on protected species and habitats, landscape considerations, proposal to enhance ecology and in case done insensitively it will negative impacts on nature. Habitat survey is considered as the desk study to identify nature conservation sites, habitats along routes, record of notable and protected species. Habitat survey is helpful in order to plan project budgets and timeframe.

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Patch use as an indicator of habitat preference, predation risk, and competition

Cited by 1,216 publications

References 44 publications

Interference from adults forces young red knots to forage for longer and in dangerous places

Interference from adults forces young red knots to forage for longer and in dangerous places

Population-level consequences of heterospecific density-dependent movements in predator–prey systems

Landscape Degradation and Restoration — A Planning Approach

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