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Unit 3 Ecology Stack

Unit 3 Ecology Study Stack

TermDefinition
Ecology Scientific study of interactions among organisms and between organisms and their enviroment
Biosphere Part of Earth in which life exists including land, water and air or atmosphere.
Species A group of similar organisms that can breed and produce fertile offspring.
Population Group of individuals of the same species that live in the same area.
Community Assemblage of different populations that live together in a defined area.
Ecosystem Collection of all the organisms that live in a particular place, together with their nonliving environment.
Biome A group of ecosystems that have the same climate and dominant communities.
Autotroph Organism that can capture energy from sunlight or chemicals and use it to produce its own food fro inorganic compounds; also called a producer.
Chemosynthesis Process by which some organisms, such as certain bacteria, use chemical energy to produce carbohydrates.
Consumer Organism that relies on other organisms for its energy and food supply also called a hetrotroph
Carnivore Organism that obtains energy by eating animals
Detritivore Organism that feeds on plant and animals remains and other dead matter.
Food Chain * Food web Series of steps in an ecosystem in which organisms transfer energy by eating and being eaten.
Trophic Level Step in a food chain or food web
Biomass Total amount of living tissue within a given trophic level.
Biogeochemical cycle Process in which elements, chemical compounds, and other forms of matter are passed from one organism to another and from one part of the biosphere to another.
Evaperation Process by which water changes from a liquid into an atmospheric gas
Transpiration Loss of water from a plant through its leaves.
Nutrient Chemical substance that an organism requires to live.
Nitrogen Fixation Process of converting nitrogen gas into ammonia
Denitrification Conversion of nitrates into nitrogen gas.
Primary Productivity Rate at which organic matter is created by producers in an ecosystem.
Limiting Nutrient Single nutrient that either is scarce or cycles very slowly, limiting the growth or organisms in an ecosystem.
Algal Bloom An immediate increase in the amount of algae and other producers that results from a large input of a limiting nutrient.
Producer Organism that can capture energy from sunlight or chemicals and use it to produce food from inorganic compounds; also called an autotroph
Heterotroph Organism that obtains energy from the foods it consumes; also called a consumer.
Herbivore Organism that obtains energy by eating only plants.
Omnivore Organism that obtains energy by eating both plants and animals
Decomposer Organism that breaks down and obtains energy from dead organic matter
Ecology Pyrimid Diagram that shows the relative amounts of energy or matter within each trophic level in food chain or food web.
Created by: EthanGreiner