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Biology Chapter 37 Vocabulary
Terms in this set (38)
Concerned with factors that influence species composition and distribution of communities and affect community stability.
As assemblage of all the populations of organisms living close enough together for potential interaction.
Relationships with individuals of other species in the community.
Occurs when populations of two different species compete for the same limited resource.
When both populations benefit (win-win).
When one species (the predator) kills & eats another (the prey). (win-lose)
When an animal consumes plant parts or algae (win-lose).
When the host plants or animals are victimized by parasites or pathogens (win-lose).
The sum of an organism's use of the biotic & abiotic resources in its environment.
A series of reciprocal evolutionary adaptions in two species, in which change in one species acts as a new selective force on another.
A pattern of feeding relationships consisting of several different levels.
The sequence of food transfer up the trophic levels.
Are autotrophs and support all other trophic levels.
Eat secondary consumers.
Eat tertiary consumers.
Derive their energy from detritus.
The dead material produced at all the trophic levels.
Secrete enzymes that digest molecules in organic materials & convert them into inorganic forms, in the process called decomposition.
A network of interconnecting food chains.
Defined by two components: species richness & relative abundance.
The number of species in a community.
The proportional representation of a species in a community.
A species whose impact on its community is larger than its biomass or abundance indicates & occupies a niche that holds the rest of the community in place.
Events that damage biological communities.
Results from colonization by a variety of species, which are replaced by a succession of other species.
Begins in a virtually lifeless area with no soil.
Occurs when a disturbance destroys an existing community but leaves the soil intact.
Organisms that have been introduced into non-native habitats by human actions & have established themselves at the expense of native communities.
Consists of all the organisms in a community & the abiotic environment with which the organisms interact.
Moves through the components of an ecosystem.
The transfer of materials within the ecosystem.
Represents the components of an ecosystem & illustrates the fundamentals of energy flow.
Include biotic components, abiotic components & abiotic reservoirs.
Where a chemical accumulates or is stockpiled outside of living organisms.
Converts N2 to compounds of nitrogen that can be used by plants & is carried out by some bacteria.
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