Spiders eat 400-800 million tons of prey every year

It has long been suspected that spiders are one of the most important groups of predators of insects. Zoologists at the University of Basel and Lund University in Sweden have now shown just how true this is - spiders kill ...

Scientists IDs genesis of animal behavior patterns

(PhysOrg.com) -- For the first time, MIT engineers and colleagues have observed the initiation of a mass gathering and subsequent migration of hundreds of millions of animals — in this case, fish.

Ants maintain essential interactions despite environmental flux

Ants adjust their social interactions to accommodate changes in population density, according to researchers at Penn State and Georgetown University. The findings suggest that ant colonies are capable of maintaining their ...

Fate of meerkats tied to seasonal climate effects

The effects of climate change are especially obvious in arid environments where resources are scarce and subject to seasonal availability. However, the demographic mechanisms through which seasonal climate affects population ...

For ants, unity is strength—and health

When a pathogen enters their colony, ants change their behavior to avoid the outbreak of disease. In this way, they protect the queen, brood and young workers from becoming ill. These results, from a study carried out in ...

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Population density

Population density (in agriculture standing stock and standing crop) is a measurement of population per unit area or unit volume. It is frequently applied to living organisms, and particularly to humans. It is a key term used in geography.

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