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A generalized heat balance model for sheep grazing a large paddock is presented. It can be used to predict shade seeking and water usage.

A statistical study of breeding success, eggshell index, and DDE, HEOD and PCB levels in Accipiter nisus eggs collected from 17 areas in Britain durin...

An analysis of predation of cereal aphids (Sitobion avenae and Metopolophium dirhodum) by larvae of Episyrphus balteatus is described. Field data on t...

Bird numbers were estimated on areas adjacent to conifer plantations at 62 sites, each of 640 ha, in three areas of northern Scotland. The results var...

Honey-bee colonies in fruit orchards (apple and plum) often collect much dandelion pollen. Bees visiting dandelion become conditioned to it and, even ...

The weed flora of the unsprayed field margins of 19 fields in arable crop rotations was studied in Denmark in 1988-92. The farmer determined the crop ...

In field studies conducted in Africa between July 1991 and November 1992, Acacia tortilis, A. nilotica and A. mellifera seeds on the ground suffered g...

The Collembola is one of the important prey groups for generalist arthropod predators in agro-ecosystems. Differences in the quality of available spec...

Pollen was transferred from the body of one honeybee to another as they brushed against each other inside the hive. Much of the pollen on the bodies o...