Change in the communities Flashcards
succession (def)
the orderly change of species in a place over time (non-seasonal/ natural)
disturbance
created by waves and debris that rip out the organisms
pioneer species
first to colonize anything
Climax species
last to colonize anything
What are good traits to contribute to pioneer species?
Instant growth
What are good traits to contribute to climax species?
resistance to prerdation
primary succession
colonization of habitats that are a complete devoid of life
Secondary succession
reestablishment of a community in which some but not all organisms have been destroyed.
Is primary succession fast or slow?
slow
When is secondary succession likely to occur?
after storms, fires, and logging
What is a climax community?
a community that has reached equilibrium and has little to no change over a long period of time.
Communities become stabilized (resilient) in the face of disturbance
What mechanisms drive succession?
Facilitation, tolerance, and inhibition
Facilitation
Environment changed by colonizers making it more suitable for other species and unsuitable for themselves, causing replacement
Tolerance
resources exploited in different ways allowing for co-existence with replacement
inhibition
early occupants modify the environment making the area less suitable for replacement
