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Definitions |
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simplification
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A tree plantation compared to an old-growth forest is an example of habitat ______.
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conversion
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A forest being cut down to make a farm is habitat _______.
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critical number
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If a population falls below this number, it is likely to go extinct in the long term.
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poaching
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Illegal hunting of wild animals for bushmeat, traditional medicine, ivory or furs is called _____.
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keystone
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A _______ species is essential to the overall health of an ecosystem: if it is removed, biodiversity goes down.
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S
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Predators help keep prey in this type of stable population curve.
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carrying capacity
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The maximum number of individuals that a certain ecosystem can support.
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insects
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Of the almost 2 million species known on Earth, nearly half are _____.
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community
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All the animals of a certain area make up the animal _______ for that ecosystem.
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ecological
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_____ extinction is when a species no longer fulfills its role in an ecosystem.
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intrinsic
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All species have a right to exist. This represents their ____ value.
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instrumental
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Use of biodiversity for medicine, agriculture, recreation, etc represents the ____ value of species.
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endangered species act
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Plants and animals in the USA at risk for extinction are protect under this legislation.
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fragmentation
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This type of habitat loss is when a large area of habitat is broken up into separate pieces, and animals are isolated into separate populations.
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hotspot
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A biodiversity _____ has exceptionally high biodiversity; most occur in the tropics.
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local
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_____ extinction is when a species disappears from an area.
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CITES
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This international agreement outlaws the trade in endangered plants and animals.
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J
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This type of curve shows a population explosion and crash
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rosy periwinkle
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This plant, native to Madagascar, provided the molecules now used to cure childhood leukemia.
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mangrove
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These trees have many adaptations that allow them to thrive in tropical coastal ecosystems.
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ecosystem
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A grouping of plants and animals interacting with each other and their environment.
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population
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A group of individuals of the same species, living in a specific area.
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introduced species
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The number 1 cause of extinctions since 1500.
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species
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Organisms with similar anatomy, physiology and behavior, that only breed together, make up a _____.
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lichen
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Reindeer on St Matthew's Island starved in winter because they had overgrazed the ______.
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natural capital
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The "wealth" provided by nature, in goods and services, is called _____ _____.
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biological
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_____ extinction means a species is gone forever!
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