3.2 Flashcards
(15 cards)
What is biodiversity?
The diversity of species in an area.
What benefits does biodiversity provide for humans?
Food, shelter/warmth, medicine, indirect services, agriculture.
What is species richness?
The number of different types of species.
What is species evenness?
Abundance/proportion of species.
What is species diversity?
a combination of species richness and species evenness.
What is species evenness?
The relative distribution of individuals among the species presents in a community.
Genetic diversity is often related to what?
the size of a population.
What is ecosystem diversity?
The range of habitat types, variation within ecosystems.
What is ecological succession?
The transition in species composition overtime.
Primary succession begins with what?
Rock and bacteria/lichens/mosses/grasses/shrubs/trees.
Bacteria, lichens, and mosses make what?
soil
Succession is driven by?
Tolerance, Facilitation, and Inhibition.
Secondary succession is…
A existing community cleared, but base soil is still intact.
Disturbances are NOT necessary for community development and survival. True or False
False
