Results 261 to 270 of about 739,700 (305)
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Prey depletion inside and outside the territories of redshank, Tringa totanus
Animal Behaviour, 1984Observations realisees pres de l'estuaire du Taw, Devon, ou T.t. se nourrit principalement sur l'amphipode Corophium volutator. Il ne semble pas que la diminution des ressources alimentaires en hiver soit moindre a l'interieur du territoire qu'a l'exterieur ce qui semblerait prouver que T.t.
J. Goss‐Custard +2 more
semanticscholar +2 more sources
SSRN Electronic Journal, 2001
The tiger ( Panthera tigris ) is classified as endangered and populations continue to decline. This paper presents a formal economic analysis of the two most imminent threats to the survival of wild tigers: poaching tigers and hunting their prey. A model is developed to examine interactions between tigers and farm households living in and around tiger ...
R. Damania +3 more
semanticscholar +3 more sources
The tiger ( Panthera tigris ) is classified as endangered and populations continue to decline. This paper presents a formal economic analysis of the two most imminent threats to the survival of wild tigers: poaching tigers and hunting their prey. A model is developed to examine interactions between tigers and farm households living in and around tiger ...
R. Damania +3 more
semanticscholar +3 more sources
The effects of prey depletion on the patch choice of foraging blue jays (Cyanocitta cristata)
Animal Behaviour, 1985 Abstract Blue jays (Cyanocitta cristata) were trained to hunt for non-cryptic moths, presented in projected images. On each trial, the jays chose one of two patches to hunt in: (1) a uniform, ‘non-depleting’ patch with constant prey density of 0·25; or (2) a ‘depleting’ patch in which prey density changed during the foraging bout.
A. Kamil, S. Yoerg
semanticscholar +3 more sources
Prey size and prey density affect meal patterns of rats in depleting and nondepleting patches
Animal Behaviour, 1999We examined meal-ending decisions by rats feeding in depleting patches (where the rate of return decreased during a meal) and nondepleting patches (where the rate of return was constant) in a closed-economy, laboratory setting that allowed the precise measurement of feeding rates and meal patterns.
, Johnson, , Collier
openaire +2 more sources
Oecologia, 2001
We examined to what extent breeding insectivorous treecreepers, Certhia familiaris, affect the abundance and the mean size of their prey population on the surface of tree trunks. In order to determine foraging pressure on tree trunks, we observed the parent birds' foraging behaviour in marked squares (25×25 m) at a short (10 m) and long distance (90 m)
Ari Jäntti +4 more
semanticscholar +3 more sources
We examined to what extent breeding insectivorous treecreepers, Certhia familiaris, affect the abundance and the mean size of their prey population on the surface of tree trunks. In order to determine foraging pressure on tree trunks, we observed the parent birds' foraging behaviour in marked squares (25×25 m) at a short (10 m) and long distance (90 m)
Ari Jäntti +4 more
semanticscholar +3 more sources
Timing of Shorebird Migration in Relation to Prey Depletion
The Auk, 1981Abstract The southward departure of migratory shorebirds (Charadrii) before the collapse of food supplies on the breeding grounds would seem to disprove the hypothesis that migratory timing is a trait actively maintained by selective pressures created by seasonal production of food supplies. In this study we looked at seasonal changes in
Schneider, David C. +1 more
openaire +1 more source
Living on the Edge: Depletion of Wild Prey and Survival of the Snow Leopard
, 2016Snow leopards have a narrow diet spectrum and tend to prefer mountain ungulates, even where this prey is much less abundant than livestock. This feature makes the snow leopard particularly sensitive to human-induced local depletion of wild prey, as retaliatory killing by herders can exert a heavy toll on snow leopards' feeding on domestic ungulates. In
S. Lovari, C. Mishra
semanticscholar +4 more sources
Ecological Applications, 2012 The nature and impact of fishing on predators that share a fished resource is an important consideration in ecosystem‐based fisheries management. Krill (Euphausia superba) is a keystone species in the Antarctic, serving as a fundamental forage source for predators and simultaneously being subject to fishing.
É. Plagányi, D. Butterworth
semanticscholar +4 more sources
, 1981
One of the many decisions facing birds attempting to maximize their food intake is the choice of where to go to feed. Certainly they should restrict their search to where food is plentiful, and concentration in the optimal parts of the feeding area has been documented for the Oystercatcher by Hulscher (1976) and Goss-Custard (1977).
L. Zwarts, R. Drent
semanticscholar +2 more sources
One of the many decisions facing birds attempting to maximize their food intake is the choice of where to go to feed. Certainly they should restrict their search to where food is plentiful, and concentration in the optimal parts of the feeding area has been documented for the Oystercatcher by Hulscher (1976) and Goss-Custard (1977).
L. Zwarts, R. Drent
semanticscholar +2 more sources
Depleting wild prey compels common leopard (Panthera pardus) to sustain on livestock
Animal Biology, 2019AbstractThe wide distribution of a predator can reflect its flexibility in adapting to various ecosystems. The common leopard (Panthera pardus) is “Critically Endangered” in Pakistan while the IUCN Red List categorizes it globally as “Vulnerable”. This study investigated the distribution of the common leopard and the contribution of livestock in its ...
Abid Hussain +6 more
openaire +1 more source