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EPA Glossary of Climate Change Terms
Living. Living organisms make up the biotic parts of ecosystems. See abiotic.

biotic - of or relating to life.
birth control - preventing birth or reducing frequency of birth, primarily by preventing conception.

Biotic: the living components of an organism"s environment
Bioturbation: the disturbance of sedimentary deposits by living organisms

Pertaining to life; environmental factors created by living organisms.
biotic potential ...

Biotic homogenization, defined as the process whereby species assemblages become increasingly dominated by a small number of widespread species, represents further losses in biodiversity that are often missed when only considering changes in absolute numbers of species.

Biotic Community: A naturally occurring assemblage of plants and animals that live in the same environment and are mutually sustaining and interdependent. (See: Biome)
Biotransformation: Conversion of a substance into other compounds by organisms; includes biodegradation.

biotic community See community.
biotic influence
biotic potential The inherent ability of members of a population to grow in numbers within a given time and under stated environmental conditions.

Biotic Influences on Lake Chemistry
The biology and chemistry of fresh waters are closely linked. Each strongly influences the other, and multiple feedback loops exist between them. Probably the most important of these interactions is the photosynthesisrespiration process.

Biotic potential:
All the factors that contribute to a species
increasing its number. Reproduction, migration, adaptation etc.
BOD: ...

Xenobiotic: Any biological substance, displaced from its normal habitat; a chemical foreign to a biological system.

A term for non-natural or man-made substances found in the environment (i.e., synthetics, plastics).
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A substance that is produced by a species of microorganism and, in dilute solution, has the capacity to inhibit the growth of or kill certain other organisms.
apparent density ...

Substance produced by, and obtained from, certain living cells (especially bacteria, yeasts and moulds), or an equivalent synthetic substance, which is biostatic or biocidal at low concentrations to some other form of life, especially pathogenic or noxious organisms.

Biotic: living.
Biotic Community: a self-sustaining community of living things. An ecosystem.
Biotic Factor: the environmental influence exerted naturally by living organisms: worms that aerate soil, animals that enrich it with manure, trees that throw shade, etc.

In fact, the antibiotic elements in the ladybird are so powerful, that the scientists consider them promising foci for drug development.
But the ladybird's most powerful weapon in its biological armoury is minute funghi known as microsporidia.

Ecosystem An interconnected and symbiotic grouping of animals, plants, fungi and micro-organisms that sustains life through biological, geological and chemical activity.

Bacteroids In legume nodules the symbiotic Rhizobium bacteria that have entered an active nitrogen-fixing state and have usually ceased to divide and commonly become banded and branched.

Another type of root symbiotic association occurs between several species of trees and nitrogen fixing bacteria. In these associations, nodules are produced by the roots of the host plant upon bacterial infection. Bacterial cells are actually incorporated into the cytoplasm of the host cells.

These are soil fungi that infect plant roots and produce a symbiotic relationship. The fungi acts as rootlets and increases the surface area available for contact with nutrients (particularly phosphorus and zinc) by ten fold. The mycorrhizae then makes these nutrients available to the plant.

Environmental management involves the management of all components of the bio-physical environment, both living (biotic) and non-living (a biotic). The main role of environmental management is to manage the productive use of natural resources without reducing their efficiency and quality.

Plant and animal communities as the characterising elements of the biotic environment, together with abiotic factors (soil, climate, water availability and quality, and others), operating together at a particular scale. The term 'habitat type' is often used synonymously with 'ecosystem'.

Ecological Indicator: A characteristic of an ecosystem that is related to, or derived from, a measure of biotic or abiotic variable, that can provide quantitative information on ecological structure and function. An indicator can contribute to a measure of integrity and sustainability.

In order to fix nitrogen many trees rely on fungi in a symbiotic relationship with their roots. If acidity inhibits the growth of these mycorrhizae associations this could lead to trees struggling to fix nitrogen without their symbiotic partners.

Environment. All of the physical, chemical, and biotic factors (climate, soil, living things, etc.) that act upon an organism or an ecological community and ultimately determine its form and survival. The circumstances, objects, and conditions that surround each of us.

Biogeochemical cycle The cycle of elements through the biotic and abiotic environment.

Biosynthesis Catabolism, the production of new cellular materials from other organic or inorganic chemicals.

Entire community of living organisms in a single major ecological area. (See biotic community.)
Source: Terms of the Environment

The process involves use of chromated copper arsenate and other toxic chemicals which are regulated as hazardous materials. Xenobiotic
A term for non-natural or man-made substances found in the environment (i.e., synthetics, plastics).

approach to the practice of sustainable farming, ranching, gardening and living, by designing constructed ecosystems that serve the needs of human populations without degrading the natural environment. Permaculture sites integrate plants, animals, landscapes, structures, and humans into symbiotic ...

Plants need nitrogen to grow, but only a few of them are able to take it directly from the air, and even the legumes do it with help from symbiotic bacteria.

See also: See also: What is the meaning of Environment, Water, Environmental, Organism, Species?

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