Ch. 11

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Total cards: 22•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (22)

Front (Question)

biodiversity

Back (Answer)

diversity of genes, species, and ecosystems in a particular region

Front (Question)

how is biodiversity reduced? (3)

Back (Answer)

• reduction in size population • destruction or modification of ecosystems • species extinction

Front (Question)

species threatened by extinction (4)

Back (Answer)

• birds = 12.5% • mammals = 25% • amphibians = 33% • turtles = 50%

Front (Question)

coral reefs (2)

Back (Answer)

• coral reefs lost = 10% 2. coral reefs threatened = 60%

Front (Question)

species most likely to become extinct (4)

Back (Answer)

• low population density • found in small areas • specialized niche • low reproductive rates

Front (Question)

species least likely to become extinct (4)

Back (Answer)

• high population density • found over a large area • generalized niche • high reproductive rates

Front (Question)

genetic diversity (5)

Back (Answer)

• mutations • migration • sexual reproduction • population size • selective breeding

Front (Question)

species diversity (4)

Back (Answer)

• geological and evolutionary history • migration • size of area • human activity

Front (Question)

ecosystem diversity

Back (Answer)

measure of the # of different kinds of ecosystems in a particular area

#10

Front (Question)

biological and ecosystem services (5)

Back (Answer)

• nutrient cycling • water regulation and supply • food and raw materials • pollination • soil formation

#11

Front (Question)

direct economic valves (3)

Back (Answer)

• agriculture • fisheries • forestry

#12

Front (Question)

threats to biodiversity (6)

Back (Answer)

• habitat loss in terrestrial ecosystems • habitat loss in aquatic ecosystems • overexploitation • intro. of exotic (non-native) species • control of predator and pest organisms • climate change

#13

Front (Question)

habitat loss in terrestrial systems (3)

Back (Answer)

• conversion to agriculture • forestry • conversion to urban and industrial use

#14

Front (Question)

habitat loss in aquatic ecosystems (3)

Back (Answer)

• channelizing rivers • construction of dams • withdrawal of water

#15

Front (Question)

overexploitation (3)

Back (Answer)

• overfishing • aquaculture - fish farming (similar to agriculture) • unsustainable harvests of wildlife and plants

#16

Front (Question)

intro. of exotic (non-native) species (3)

Back (Answer)

• ex: gypsy moths • may either kill or compete with native species • can have large-scale impacts on ecosystems

#17

Front (Question)

control of predator and pest organisms (2)

Back (Answer)

• elimination of large predators 2. elimination of some pests and pathogens

#18

Front (Question)

climate change

Back (Answer)

amphibians, corals, and arctic species are particularly vulnerable

#19

Front (Question)

legal aspects (5)

Back (Answer)

• convention on biological diversity (cbd) • u.s. endangered species act (1973) • CITES • sustainable management of wildlife populations • sustainable management of fish populations

#20

Front (Question)

u.s. endangered species act (3)

Back (Answer)

• designates endangered and threatened species • gov agencies must use w/e means necessary to preserve these species • biased toward large, easy to identify organisms

#21

Front (Question)

sustainable management of wildlife populations (3)

Back (Answer)

• habitat analysis and management • population assessment and management • establishment of refuges

#22

Front (Question)

sustainable management of fish populations

Back (Answer)

need for international agreement on limits for the harvest of fish