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APES CH7 Vocab
Terms in this set (22)
a species on which other species in an ecosystem largely depend, such that if it were removed the ecosystem would change drastically.
refers to the measure of diversity in an ecological community.
the number of different species represented in an ecological community, landscape or region.
refers to how close in numbers each species in an environment is
An indicator species is an organism whose presence, absence or abundance reflects a specific environmental condition.
a change in species composition, physical conditions, or other ecological factors at the boundary between two ecosystems
the study of the species composition and species richness on islands
a plant, fungus, or animal species that is not native to a specific location (an introduced species
A form of competition between members of different species inhabiting the same ecological area
is the process whereby similar species exploit the limited resources in an ecological area without one species driving the others into extinction.
A symbiotic relationship between individuals of different species in which both individuals benefit from the association
type of relationship between two species of a plant, animal, fungus, etc., in which one lives with, on, or in another without damage to either.
the process of change in the species structure of an ecological community over time
the development of plant and animal life in an area without topsoil; the development of biotic communities in a previously uninhabited and barren habitat with little or no soil
The ecological succession of plant and animal communities in a disturbed area where topsoil has been retained, as in an area that has been recently burned by fire.
the resemblance of an animal species to another species or to natural objects
are hardy species which are the first to colonize previously disrupted or damaged ecosystems, beginning a chain of ecological succession that ultimately leads to a more biodiverse steady-state ecosystem.
An ecological community in the final stage of succession, in which the species composition remains relatively stable until a disturbance such as fire occurs.
the ability of a living system to resist being disturbed or altered
Ability of a living system, such as a population, to maintain a certain size. See homeostasis.
ability of a living system to restore through secondary succession after moderate disturbances
struggle between individuals to obtain a limiting resource
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