Chapter 20 Flashcards Preview

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Flashcards in Chapter 20 Deck (20):
1

endemic species

a species whose distribution is limited to a specific geographic area

2

interspecific competition

competition between populations of two or more species that require similar limited resources

3

keystone species

a species whose impact on its community is much larger than its biomass or abundance indicates

4

movement corridor

a series of small clumps or a narrow strip of quality habitat that connects otherwise isolated patches of quality habitat

5

pyramid of production

a diagram depicting the cumulative loss of energy with each transfer in a food chain

6

disturbances

in an ecological sense, a force that damages a biological community, at least temporarily, by destroying organisms and altering the availability of resources needed by organisms in the community.

7

warning coloration

the bright color pattern, often yellow, red, or orange in a combo with black, of animals that have effective chemical defenses

8

Biodiversity Hotspot

A small geographic area that contains a large number of threatened or endangered species and an exceptional concentration of endemic species (those found no where else).

9

Biological Magnification

The accumulation of persistent chemicals in the tissue of consumers in food chains.

10

Bioremediation

The use of living organisms to detoxify and restore polluted and degraded ecosystems.

11

Competitive Exclusion

The concept that populations of two species cannot coexist in a community if their niches are nearly identical. Using resources more efficiently and having a reproductive advantage, one of the populations will eventually out compete and eliminate the other.

12

Cryptic Corolation

Adaptive correlation that makes an organism difficult to spot against its background.

13

Ecological Niche

The sum total of a species' use of the biotic and abiotic resources of its habitat.

14

Ecosystem Services

Functions performed by an ecosystem that directly or indirectly benefit people.

15

Relative Abundance

he number of percent composition of an organism of a particular kind relative to the total number of organism in the area

16

Restoration Ecology

the scientific study supporting the practice of ecological restoration, which is the practice of renewing and restoring degraded, damaged, or destroyed ecosystems and habitats in the environment by active human intervention and action.

17

Species Richness

the number of species present in a sample, community, or taxonomic group

18

Sustainable Development

development that meets the needs of the present without compromising the ability of future generations to meet their own needs.

19

Trophic Structure

the pattern of movement of energy and matter through an ecosystem.

20

Energy Flow

the amount of energy that moves through a food chain