ABSTRACT
These are non-biological or environmental factors such as temperature, light intensity, humidity, etc. The process of physiological adjustment which occurs under laboratory conditions. The process of physiological adjustment to changing seasonal temperature levels, pH, light intensity, etc., which occurs under natural conditions. If two or more species have an allopatric distribution, their distribution is geographically dissimilar. Living in trees. Living in water. A biological region classified on the basis of climate and the major vegetation type, e.g., tropical rainforest biome, taiga - coniferous forest biome. A period of activity which is about 24 hours long. A graded series of different forms of the same species. Active during sunrise or evening (twilight). In amphibians and reptiles, the lower body temperature at which locomotion is no longer possible. During the daily (day and night) cycle. Active during the hours of daylight. In reference to rhythmic behaviour, it is that behaviour which has a rhythm based on an organism’s biochemical cycles - cf. Exogenous. The nutrient enrichment of bodies of water caused by organic enrichment. Although a natural process, rapid eutrophication can use up oxygen in the water and this may result in the mortality of the aquatic organisms. A species that is able to tolerate a wide range of conditions or is not specialised, e.g., an eurythermal species of frog is one which may tolerate a wide range of water temperature conditions (cf. stenoecious). Refers to rhythmic behaviour which is based on environmental
Fecundity
Genetic (variability, variation)
Gestation Habitat
Hibernation
Impervious
Metamorphosis
Microhabitat Neoteny
Niche
Nocturnal Optimal foraging
Paedomorphosis
pH
Pheromone
Reproductive isolation
cycles such as changes in the seasons, tides and cycles of day and night. The capacity of an individual to multiply (breed): for example, the number of eggs produced gives a level of fecundity.
