Ecosystem
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- The organisms in a plant population and the biotic and abiotic factors which impact on them. See abiotic factors; Biotic factors.
Susan Allender-Hagedorn and Charles Hagedorn - Cite This Source - This Definition - The complex of a living community and its environment, functioning as an ecological unit in nature. See: abiotic; biotic factors.
UN Food and Agriculture Organization - Cite This Source - This Definition - acclimatization, biotic factor, Metabolism, microtubule, secondary metabolism
- Any natural unit or entity including living and non-living parts that interact to produce a stable system through cyclic exchange of materials.
EPA - Cite This Source - This Definition - The complex system of plant, animal, fungal, and microorganism communities and their associated non-living environment interacting as an ecological unit. Ecosystems have no fixed boundaries; instead their parameters are set to the scientific, management, or policy question being examined. Depending upon the purpose of analysis, a single lake, a watershed, or an entire region could be considered an ecosystem.
EPA - Cite This Source - This Definition - relationships between and among living organisms and their non-living environment.
NCDC National Climatic Data Center - Cite This Source - This Definition - abiotic, biosphere, Biotic, Environment, Histosol, photosynthesis, Polyvinyl chloride (PVC), Population, Respiration, Soil
- Complex system composed of a community of people, animals, and plants as well as the chemical and physical environments.
Bureau of Reclamation - Cite This Source - This Definition - AUM, behavior, Biota, biotope, Desertification, Epifauna, Fauna, habitat, Herbivore, Invertebrates, Organic, organism, range, Recruitment, substrate, toxin, Trophic level
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