Terms in Ecology

Terms in Ecology

Terms in Ecology

Ecosystem: A functional self- supporting system that includes organisms in a natural community and their environment.

Habitat: A specific place or natural conditions in which a plant or animal lives.

Coastal: Relating to the coast, on or near the coast as a coastal town, a coastal breeze.

Niche: The ecological niche describes how an organism or population responds to the distribution of resources and competitors and how its turn alters those same factors.

Estuary: The tidal mouth of a large river, where the tide meets the streams.

Trophic level: Trophic level is the position of an organism within a food web.
The Greek word "trephin" means nourish, thus the nourishing level.

Food Chain: Food chain are the linkage of who feeds on whom. Energy, chemical elements and some compounds are transferred from creature to creatures along food chain.

Food web: Food web is the complex linkage of an inter - relationship among organisms in which energy is transferred from one organism to another.
Each organism consumes the proceeding one and in turn is eaten by the next higher sequence.

Q10 value: The change in enzyme activity caused by a 10 degree Celsius rise is known as 10 temperature quotient or Q10 value.

COD (Chemical oxygen demand): The amount of oxygen demand to oxidize completely organic matter with dichromate or permanganate in a water sample.
BOD (Biological Oxygen Demand): The amount of dissolved oxygen to oxidize organic matter needed by microorganisms in a sample at certain temperature over a specific time period.
Water activity: The amount of water actually available for microbial use is called water activity.
Water potential is related to water activity.

SOD (Superoxide Dismutase): SOD is a bacterial enzyme that protects cell from toxic forms of oxygen for example superoxide anion.

Carnivores: They are meat eaters, feed on herbivores make up the third trophic level.

Decomposers: Decomposers feed on organic matter. They are the highest trophic level.

Terms in Ecology
Written By
Sadia Akhtar
Student of Department of Microbiology
Jagannath University.
Email- sadiabd810@yahoo.com
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