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Patch Dynamics pp 224-246 | Cite as

Shifting Mosaic Metapopulation Dynamics

  • James S. Clark
Conference paper
Part of the Lecture Notes in Biomathematics book series (LNBM, volume 96)

Abstract

Many of the features long viewed as among the most important influences on tree population dynamics have only recently begun to be incorporated in analyzable models. These processes tend to operate at several spatial and temporal scales, and they represent factors that produce and/or depend on heterogeneity. Some of these considerations include:
  • Growth-dependent thinning: Thinning rates at local scales (100 to 102 m2) are determined by growth rates. There is no “carrying capacity” at such scales in the traditional sense, because plants are continually growing and, therefore, thinning.

  • Changing importance of density-dependent and density-independent mortality: The relative importances of different mortality risks change with canopy coverage, and they influence recruitment. Thinning caused by crowding has different demographic consequences than do juvenile death and senescence.

  • Episodic recruitment: Seedling establishment is locally episodic, being associated with “disturbance”, i.e. specific types of mortality.

Keywords

Canopy Coverage Local Dynamic Crown Area Disturbance Rate Metapopulation Structure 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1993

Authors and Affiliations

  • James S. Clark

There are no affiliations available

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