microbial analysis
121Biogeochemical cycle — A commonly cited example is the water cycle. In ecology and Earth science, a biogeochemical cycle or substance turnover or cycling of substances is a pathway by which a chemical element or molecule moves through both biotic (biosphere) and… …
122Competitive exclusion principle — In ecology, the competitive exclusion principle,[1] sometimes referred to as Gause s law of competitive exclusion or just Gause s law,[2] is a proposition which states that two species competing for the same resources cannot coexist if other… …
123Metabolic theory of ecology — The metabolic theory of ecology (MTE) is an extension of Kleiber s law and posits that the metabolic rate of organisms is the fundamental biological rate that governs most observed patterns in ecology.[1] MTE is based on an interpretation of the… …
124Niche construction — Beavers hold a very specific biological niche in the ecosystem: constructing dams across river systems.) Niche construction is the process in which an organism alters its own (or other species ) environment, often but not always in a manner that… …
125Antipredator adaptation — A lone bison is standing its ground against a pack of wolves, thereby increasing its chance of survival Antipredator adaptations are evolutionary adaptations developed over time, which assist prey organisms in their constant struggle against… …
126Marginal value theorem — The optimal time spent in a patch is given by the tangent to the resource intake curve that departs from the expected transit time value. Any other line crossing the resource intake curve has a shallower slope and thus a sub optimal resource… …
127Habitat — For other uses of Habitat , see Habitat (disambiguation). The remaining fragmented habitats of the African Elephant …
128Species-area curve — The species area relationship for a contiguous habitat In ecology, a species area curve is a relationship between the area of a habitat, or of part of a habitat, and the number of species found within that area. Larger areas tend to contain… …
