Ch. 16-1 and 2 Ecosystems and Energy Flow in Ecosystems
Terms in this set (25)
the study of interactions of living organisms with one another and with their environment.
the place where an organism lives.
a group of organisms of the same species that live in a specific (geographical) area and interbreed.
a group of species that live in the same habitat and interact with each other (the living or biotic compnent of an ecosystem).
a community of organisms (biotic) and their abiotic (non-living) environment.
non-living factors; an environmental factor that is not associated with the activities of living organisms.
ex: temperature, soil, humidity, etc.
the organisms or living components in ecosystems.
ex: producers, herbivores, plants, etc.
the number and variety of organisms in a given area during a specific period of time.
the replacement of one type of community by another at a single location over a period of time.
succession that begins in an area that previously did NOT support life; NO SOIL.
the first species that colonizes an uninhabited area.
the process by which one community replaces another community that has been partially or totally destroyed.
rate at which organic matter is created by producers in an ecosystem (usually through photosynthesis).
(autotrophs) an organism that can make organic molecules (food) from inorganic molecules.
organism that relies on other organisms for its energy and food supply; also called a heterotroph.
feeding levels; step in a food chain or food web.
*1st trophic level is ALWAYS occupied by producers.
series of steps in an ecosystem in which organisms transfer energy by eating and being eaten.
an organism that eats only plants.
an animal that eats other animals.
organism that obtains energy by eating both plants and animals.
organism that breaks down and obtains energy from dead organic matter.
network of complex interactions formed by the feeding relatioshipd among the various organisms in an ecosystem.
diagram that shows an ecosystem's loss of energy which results as energy passes through the food chain.
total amount of biomass at each trophic level.
the total mass of the organisms in a given area; organic matter that can be a source of energy.