biogeochemical cycle
101Organotroph — An organotroph is an organism that obtains hydrogen or electrons from organic substrates (a form of a chemotroph). Antonym: Lithotroph See also Lithotroph Heterotroph Primary nutritional groups …
102Microecosystem — Microecosystems can exist in locations which are precisely defined by critical environmental factors within small or tiny spaces. Such factors may include temperature, pH, chemical milieu, nutrient supply, presence of symbionts or solid… …
103Chemoorganotroph — Chemoorganotrophs are organisms which use organic compounds as their energy source. These organic chemicals include glucose and acetate. All animals are chemoorganotrophs, as are fungi, protozoa, and some bacteria. Indeed, most heterotrophs are… …
104Depensation — In population dynamics, depensation is the effect on a population (or stock) whereby, due to certain causes, a decrease in the breeding population (mature individuals) leads to reduced survival and production of eggs or offspring. The cause may… …
105Niche differentiation — The term niche differentiation (synonymous with niche segregation, niche separation and niche partitioning), as it applies to the field of ecology, refers to the process by which natural selection drives competing species into different patterns… …
106Competition (biology) — Sea Anemones compete for the territory in tide pools Competition is an interaction between organisms or species, in which the fitness of one is lowered by the presence of another. Limited supply of at least one resource (such as food, water …
107Mycotroph — A mycotroph is a plant that gets all or part of its carbon, water, and/or nutrient supply through symbiotic association with fungi. The term can refer to plants that engage in either of two distinct symbioses with fungi: Many mycotrophs have a… …
108Species distribution — A species range maps represents the geographical region where individuals of a species can be found. This is a range map of Juniperus communis, the common juniper. Species distribution is the manner in which a biological taxon is spatially… …
109Cline (biology) — In biology, an ecocline or simply cline (Greek: κλίνω = to possess or exhibit gradient, to lean) describes an ecotone in which a series of biocommunities display continuous gradient.[1] The term was coined by the English evolutionary biologist… …
110Interspecific competition — Interspecific competition, in ecology, is a form of competition in which individuals of different species compete for the same resource in an ecosystem (e.g. food or living space). The other form of competition is intraspecific competition, which …
