BioScience Dictionary

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Found Ecosystem 24 times.

Displaying results 1 to 10.

1. Biochemical cycle
The flow of an element through the living tissue and physical environment of an ecosystem ; e. g., the carbon, hydrogen, oxygen, nitrogen, sulfur, and phosphorus cycles.

2. Biodiversity
Biological diversity; can be measured in terms of genetic, species, or ecosystem diversity.

3. Biosphere
All ecosystems on Earth as well as the Earth's crust, waters, and atmosphere on and in which organisms exist; also, the sum of all living matter on Earth.

4. Denitrification
Conversion of nitrate into nitrogen gases under anaerobic conditions, resulting in loss of nitrogen from ecosystem s.

5. Ecological niche
The role an organism occupies and the function it performs in an ecosystem; closely associated with feeding.

6. Ecological protection
Protection consists of measures undertaken to protect and preserve elements of an ecosystem 's structure and functions against future degradation.

7. Ecological restoration
* The process of renewing and maintaining ecosystem health. * Ecological restoration is the process of intentionally altering a site to establish a defined, indigenous, historic ecosystem. The goal of this process is to emulate the structure, function, diversity, and dynamics of the specified ecosystem.

8. Ecosystem (ecological system, holocoen)
* An ecosystem is the dynamic and interrelating complex of plant and animal communities and their associated non-living environment. * The physical and climactic features and all the living and dead organisms in an area that are interrelated in the transfer of energy and material. * An interacting complex of a community and its environment functioning as an ecological unit in nature. Differs from "system" in being a more rigorous definition that encompasses and requires assumptions of energetics, ecological interactions, species adaptation s and so forth.

9. Ecosystem altering
Any activity that modifies the biota including species composition, distribution, and abundance and any activity that modifies the physical environment, including soils and the water cycle.

10. Ecosystem dynamics
Those intrinsic ecological functions through which an ecosystem becomes self-regulating, self-sustaining, and capable of recovery from external forces (e.g., damaging storm events). These intrinsic processes may cause continual change in biotic composition and structure at specific localities. Collectively, these changes represent internal flux, rather than substantive and permanent alteration of the ecosystem regionally.

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