Lack is particularly noted for his argument that density of animal populations is more important than other factors (such as weather) in determining animal distribution and number (The Natural Regulation of Animal Numbers, 1954).
Previous studies monitoring ungulate density, however, focused mostly on determining animal abundance, and did not interpret animal distribution in relation to habitat parameters.
Researchers have bred butterflies to have disproportionate wing-to-body ratios, suggesting that natural selection plays a larger than expected role in determining animal form.
Recently, the dilemma of determining animal odor preferences was approached by the analysis of nose-poking in mice [2], [11].
This is a scientifically robust and efficient way of determining animal numbers and may ultimately help to prevent animals being used unnecessarily.
The likes of Tesco and Sainsbury's are, to quote Hay's local MP Roger Williams, "extraordinarily determined animals".
Factors such as species of animal, the physiological status of the animals, the relative humidity, velocity of ambient air and the degree of solar radiation determines animals' zones of thermal comfort.
Two different motor skill tasks (beam balance and paw placement) were used to determine animals' motor performance following injury [17], [18] on days 1 3 post-injury.
GT sampled and determined animals and isolated DNA.
Traditional trait improvement has centred on quantitative genetics, using statistical analysis of phenotypic data to determine animals with the highest genetic merit [ 2].
