the variety of different communities in a particular area

a measure of the diversity of different plant and animal species in an area

an event that causes a noticeable change to an ecosystem; also know as a disturbance

species which colonize land that has not yet been settled; the beginning of ecological succession

the organisms or species that appear in an area or ecosystem in the middle stage of succession; not the first or the final stage

species with a critical role inside its community; maintains the structure of the community

a relatively stable community in an ecosystem; the last stage of ecological succession

the type of ecological succession that starts from bare rock with no soil or living things

the type of ecological succession that starts from soil (and probably seeds) but very limited species and numbers of organisms

looks like a small plant, but it has no stems or leaves; actually a weird combination of algae that helps a fungus; can grow with little or no soil

the number or amount of something; "how much"

the state of being unchanging or changing very little

to support, maintain, or endure; "keep going"

of little importance or little value

the differences between individuals within a species

the destruction of trees and forests

"how" an organism lives; its "job" in the ecosystem

when organisms both need the same limited resources, like food, water, or territory; affects the organisms negatively

one organism kills and consumes another organism

a group of the same species in the same area; the squirrels in the park

a group of all the organisms in the same area; (the squirrels, trees, bugs, birds, grass, and bushes in the park)

the biotic and the abiotic things in the same area; (the living things together with the rocks, soil, water, air, sunlight, temperature)

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Unit 5C

Ecosystems and Succession

Term	Definition
ecosystem diversity	the variety of different communities in a particular area
biodiversity index	a measure of the diversity of different plant and animal species in an area
disruption	an event that causes a noticeable change to an ecosystem; also know as a disturbance
pioneer species	species which colonize land that has not yet been settled; the beginning of ecological succession
intermediate species	the organisms or species that appear in an area or ecosystem in the middle stage of succession; not the first or the final stage
keystone species	species with a critical role inside its community; maintains the structure of the community
climax community	a relatively stable community in an ecosystem; the last stage of ecological succession
primary succession	the type of ecological succession that starts from bare rock with no soil or living things
secondary succession	the type of ecological succession that starts from soil (and probably seeds) but very limited species and numbers of organisms
lichen	looks like a small plant, but it has no stems or leaves; actually a weird combination of algae that helps a fungus; can grow with little or no soil
quantity	the number or amount of something; "how much"
stability	the state of being unchanging or changing very little
sustain	to support, maintain, or endure; "keep going"
trivial	of little importance or little value
variation	the differences between individuals within a species
vice versa	the other way around
deforestaton	the destruction of trees and forests
habitat	"where" an organism lives
niche	"how" an organism lives; its "job" in the ecosystem
competition	when organisms both need the same limited resources, like food, water, or territory; affects the organisms negatively
predation	one organism kills and consumes another organism
individual	one single organism
population	a group of the same species in the same area; the squirrels in the park
community	a group of all the organisms in the same area; (the squirrels, trees, bugs, birds, grass, and bushes in the park)
ecosystem	the biotic and the abiotic things in the same area; (the living things together with the rocks, soil, water, air, sunlight, temperature)

Created by: PRO Teacher LMS 8 Sci

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