Sentences with phrase «predator populations also»

When the number of prey increases — perhaps as their food supply becomes more abundant — predator populations also grow.

Not exact matches

Disrupting a population could also produce ripple effects in other corners of the ecosystem, for example taking a food source from aquatic predators that feed on mosquito larvae.

Many of these animals are fierce predators that sit atop the food web, but Laidre's team found that they are also important subsistence resources: Arctic people hunt nearly 80 % of the studied populations for food and other uses.

It is also an apex and keystone predator, playing an important role in stabilizing ecosystems and regulating the populations of prey species.

Global loss of vagility alters a key ecological trait of animals that affects not only population persistence but also ecosystem processes such as predator - prey interactions, nutrient cycling, and disease transmission.

The researchers also found that moose mortality was higher at the edges of an expanding bear population than in the center of the bear population, leading them to conclude that moose with less exposure to predators were more likely to be killed.

For example, the thinning ice is driving melt ponds in the Arctic and promoting phytoplankton blooms under the ice; the warming is also altering population dynamics among lemmings, with, in some locations, dire effects on their predators, such as the Arctic fox.

The earlier study also compared shark population numbers with other apex predators, such as polar bears and killer whales.

When the predator population becomes too large, however, the prey population often plummets, leaving too little food for the predators, whose population also then crashes.

The findings may also explain why harbor seal populations are declining in fjords whose glaciers have retreated onto land: Without the acoustic camouflage provided by the bubble - induced din, the seals may have a harder time evading their main predator, the killer whale.

They also wanted to evaluate scientifically whether, as some speculate, that overfishing of reef predators had allowed the lionfish population to grow unchecked.

There are also many populations of native rodents and smaller marsupials within the park, allowing researchers to assess whether the dingoes suppression of smaller predators would prove beneficial to the smallest critters.

Resource subsidies, such as garbage or hunters» carcass dumps, can also support larger predator populations, leading to greater predation pressure.

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.

And if you put a few things together, like a fire regime that doesn't help cats, a population of dingoes that hinders cats and maybe minimal livestock grazing that also means there's plenty of cover on the ground for small mammals to get refuge from predators, then we could allow cats and small mammals to co-exist.

Great news for marine animals: an enormous area around Cocos Island, also called «Shark Island» for it's high population of the apex predators, is now a safe haven for species from hammerhead sharks to leatherback turtles.

Not only will your foliage benefit as they are keen predators of slugs and snails, but you'll also be helping to rebuild the dwindling population.