ecological efficiency
71Malthusian growth model — The Malthusian growth model, sometimes called the simple exponential growth model, is essentially exponential growth based on a constant rate of compound interest. The model is named after the Reverend Thomas Malthus, who authored An Essay on the …
72Lithotroph — A lithotroph is an organism that uses an inorganic substrate (usually of mineral origin) to obtain reducing equivalents for use in biosynthesis (e.g., carbon dioxide fixation) or energy conservation via aerobic or anaerobic respiration.[1] Known… …
73Organotroph — 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 …
74Microecosystem — 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… …
75Chemoorganotroph — 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… …
76Depensation — 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… …
77Competition (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 …
78Density-dependent inhibition — In population ecology, density dependent inhibition describes a situation in which population growth is curtailed by crowding, predators and competition. In cell biology, it describes the reduction in cell division. When a cell population reaches …
79Myco-heterotrophy — Monotropa uniflora, an obligate myco heterotroph known to parasitize fungi belonging to the Russulaceae.[1] Myco heterotrophy is a symbiotic relationship between certain kinds of plants and fungi, in which the plant gets all or part of its food… …
80Mycotroph — 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… …
