Sentences with phrase «ecological conditions such»

Most scientists thought that a bird's preference for a certain number of companions had to be determined at least in part by life experience or by ecological conditions such as food abundance or the threat of predators.

Not exact matches

Comparing to neighbouring Rwanda, whose food production is in a much better state, Burundi has more conducive ecological conditions for agriculture, such as vast plains.

They found that the more prevalent the human - generated sounds, such as traffic, machinery and voices, the poorer the ecological condition.

Thus, it has been difficult to establish confidence in whether specific avian traits — such as vocal learning, predatory behavior, or adaptations to aquatic or terrestrial habitats — reflect single or multiple independent origins and under what ecological conditions these events have occurred.

Although matters can sometimes get complicated — the evolution of higher choosiness in one sex can either promote or impede selection for choosiness in the other, depending on the conditions — the researchers find that, if the ecological circumstances are such that individuals spend a large part of their lives searching for mates (e.g., male Mormon crickets, many male spiders), then the cost of choosiness is also high — and individuals can be expected not to be particularly choosy (it takes too much time).

This in turn supports the idea that, in birds, tool use for foraging is facilitated by ecological conditions typical of islands, such as reduced competition for embedded prey and low predation risk.

Yes conservation is important, not least in ensuring that species can migrate to deal with climate changes and other environmental disruptions, but the scale of human activity is such that we are collectively making the future ecological conditions of the planet.

In the future, such measurements could help scientists monitor shifting ecological conditions in the Arctic.

At best, changes of such magnitude would trigger dramatic re-organization of ecosystems across the globe that would play out over the next few centuries; at worst, extinction rates would elevate considerably for the many species adapted to pre-global warming conditions, via mechanisms described above (inability to disperse or evolve fast enough to keep pace with the extremely rapid rate of climate change, and disruption of ecological interactions within communities as species respond individualistically).