Download ECOSYSTEM ECOLOGY

ECOSYSTEM ECOLOGY II
PP. 435-439
PROPERTIES OF AN ECOSYSTEM
Species Richness
Species Evenness
Species- Area Effect
1. Species Richness: # of different types of
species
• Varies with latitude (closer to equator the
more species)
• More sun, better climate stability
2. Species evenness: the abundance of each
species
3. Measuring biodiversity
• High richness and evenness = High
biodiversity
• ↑species richness and ↑ evenness:
↑ stability (ability to withstand disturbances
in the ecosystem)
4. Species- Areas Effect: larger areas
contain more species than smaller areas
Sites A, C, and D have more richness
Sites A and C has the most evenness
Which site has the highest biodiversity?