Biol 0140 Week Five Cards

Front 1

succession

Back 1

process of community recovery following disturbance

Front 2

primary succession

Back 2

succession following a disturbance that removes both biota and soils

Front 3

secondary succession

Back 3

succession following disturbance that removes biota but leaves soil intact

Front 4

facilitation

Back 4

presence of a species that has a positive effect on another (this may be an antagonism!)

Front 5

inhibition

Back 5

this occurs when a species has a negative affect on the growth rate or survival of another

Front 6

chronosequence

Back 6

a series of sites that differ only in time-since-disturbance; can compare community characteristics across them ot determine the likely pathway of succession through time

Front 7

keystone species

Back 7

species with disproportionately large effect on community diversity and organization

Front 8

disturbance

Back 8

an event that kills individuals and/or removes biomass

Front 9

disturbance regime

Back 9

a description of what types of disturbances are important, how often they occur, and their severity

Front 10

complementarity

Back 10

process by which multiple species make more efficient use of resources by using them in complementary, rather than competitive, fashion

Front 11

ecosystem functioning

Back 11

the basic processes that make up an ecosystem -- energy flow, nutrient cycling

Front 12

ecosystem services

Back 12

usually used to refer to the benefits that humans derive from ecosystems, like erosion control, water filtration, resources

Front 13

sampling effect

Back 13

ecosystem functioning increases with diversity bc diverse communities are more likely to contain highly influential species, "composition no diversity"

Front 14

sepecies-area curve

Back 14

a graphical depiction of how species richness changes as a function of either the area sampled or the area of habitat

Front 15

species richness (S)

Back 15

the number of species present in a community