10.2 Study Guide

Question 1

examples of biodiversity benefits to humans

Answer 1

food
shelter/warmth
medicine
indirect services- clean air+water
agriculture- pollution+soil health

Question 2

Bio diversity

Answer 2

-species diversity
-genetic diversity
-ecosystem diversity

Question 3

species diversity

Answer 3

-species richness; number of different types of species
-species evenness; abundance/ proportion of species

Question 4

genetic diversity

Answer 4

-amount of genetic variation between individuals in the population

Question 5

ecosystem diversity

Answer 5

-range of habitat types, variation within ecosystems
-more niches= more species

Question 6

invasive species

Answer 6

-non native species
-out-compete native species; lack of predators, parasites, competitors
-reduce diversity

Question 7

ecological succession

Answer 7

-transition in species composition overtime

Question 8

primary succession

Answer 8

-begins with virtually lifeless area without soil, then, bacteria, lichen and mosses, grasses, shrubs, and trees make the soil.

Question 9

what drives succession?

Answer 9

tolerance, facilitation and inhibition

Question 10

climax community

Answer 10

dependent on abiotic factors of the region

-solar energy levels
-temperature
-rainfall
-fertility and depth of soil

Question 11

secondary succession

Answer 11

-existing community cleared, but base soil is still intact.

Question 12

disturbances as natural cycle

Answer 12

-often necessary for community development and survival
-releases nutrients
-increases biodiversity
-increases habitats
-rejuvenates community