Shared Flashcard Set

Details

Elements of Ecology 19
Ch 19
10
Biology
Undergraduate 4
05/04/2012

Additional Biology Flashcards

 


 

Cards

Term
Sere
Definition
Sequence of communities from grass to shrub to forest
Term
Seral stage
Definition
A point in a continuum of vegetation through time, it is often recognizable as a distinct community
Term
Succession
Definition
Is the temporal change in a community structure, refers to changes in the community structure at a given location on the landscape through time
Term
Early Successional Species (pioneer species)
Definition
Usually characterized by high growth rates, smaller size, high degree of dispersal and high rates of per capita growth
Term
Late Successional Species
Definition
Generally have lower rates of dispersal and colonization slower per capita growth rates and are longer lived
Term
Primary Succession
Definition
Occurs on a site previously unoccupied by a community- a newly exposed surface such as the cement blocks in a rocky intertidal environment
Term
Secondary Succession
Definition
Occurs on previously occupied (vegetated) sites after a disturbance
Term
Autogenic
Definition
Environmental change is a direct result of the presence and activities of organisms with the community
Term
Allogenic
Definition
Environmental change is a feature of the physical environment it is governed by physical rather than biological processes
Term
Intermediate disturbance hypothesis
Definition
At an intermediate frequency of disturbance, colonization can occur but competitive displacement is held to a minimum.
Supporting users have an ad free experience!