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19 Cards in this Set

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Succesion
the change in numjber and kinds of organisms in an area leading to a stble community
Pioneer community
the first community to develop in a successional equence
Climax community
a community that is the stable end product of succession
Seral stage
any successional community between pioneer and climax community
Sere
the entire sequence of communities in a successional sequence
Primary succession
succession in an area previously unoccupied by a community
hydrosere
sere from aquatic toward mesic terrestrial
Xerosere
sere rom rock substrate toward mesic
secondary succession
succession in an area following destruction of the previous community
cyclic succession
sere that eventually returns to the initial community
Allogenic factors
weathering, sedimentation
Autogenic factors
immigration, growth, reactions, coactions
Facilitation model
(+) - early species make enviroment more suitbale for the later species
inhibition model
(-) - early species make the environment less suittable for the later species
Tolerance model
(0) - no effect; most efficient specialists eventually prevail
Monoclimax hypothesis
the climax is determined by the regional climate
Polyclimax concept
edaphic climax, topographic climax, fire climax
Climax pattern concept
a gernal climax community that changes according to soil, slope and other habitat factors
Transient climax
seasonal pond