Sentences with phrase «with prey density»

Across India, tiger abundance is strongly correlated with prey density [20] and both depend on strict controls on hunting.

Not exact matches

They have little experience with sustainability per se, have done hardly any research into growing various crops under different native shade tree species and densities, and have very little * ecological * perspective (i.e., multi-year, cyclic, prey - predator and tree - weed interactions etc.).

But one afternoon, the whales all converged on one place where there was a really high density of prey — a 40 - meter - thick swath of water with 107 grams of krill per cubic meter, as opposed to the average density of 66 grams per cubic meter, Cade reported at the meeting.

And the whales are beginning to feed at various depths as well as along the sea floor, a shift that may have to do with changes in the population densities of their prey.

But when trout density increases upstream, and fish move downstream into Grand Canyon, they can compete with native fishes for limited food resources, sometimes preying upon juveniles.

But the research development of the techniques to count prey and tigers and doing studies in different sites across India with high and low prey densities show very clearly that the number of tigers is linked to the number of prey in a very, very strong relationship.

We used high - resolution multisensor digital tags attached to foraging blue whales (Balaenoptera musculus) with concurrent acoustic prey measurements to quantify foraging performance across depth and prey density gradients.

They note that further extended studies are needed, especially in large urbanized areas with varied habitat types, cat densities and prey availability.

They are effective predators that mainly hunt small or medium - sized vertebrates (Fitzgerald and Turner 2000), and while the density of feral cats is directly correlated with prey abundance (Genovesi et al. 1995; Edwards et al. 2001), the population density of free - ranging house cats is more reflective of human density (due to the provision of supplementary food) than that of their prey (Sims et al. 2008).

Territoriality also dampens growth of predator populations, contributing to the lagged response of predator to prey population growth and allowing fluctuating prey populations time to recover from low density in systems with linked predator and prey population dynamics3, 6,7,8.

The higher cat densities observed near some developed areas may be spillover from overcrowded conditions associated with TNR colonies and unsterilized pets, which may affect native prey populations in areas immediately adjacent to colonies.