Habitat destruction and the extinction debt revisited

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Description

A very important analysis of the problem of habitat destruction concluded that such destruction may lead to an extinction debt, which is the irreversible loss of species following a prolonged transient or delay. An error in interpretation of this model led the authors to apply the results to all types of habitat destruction, but in fact the model applies only to an across-the-board decrease in fecundity, not to disturbances. For repeated, spatially random disturbance, a different model applies. For habitat destruction on regional scales (reduction in ecosystem area without disturbance in remnant areas), one must, in contrast, apply species-area relations ... continued below

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6 p.

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Loehle, C. February 1, 1996.

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Description

A very important analysis of the problem of habitat destruction concluded that such destruction may lead to an extinction debt, which is the irreversible loss of species following a prolonged transient or delay. An error in interpretation of this model led the authors to apply the results to all types of habitat destruction, but in fact the model applies only to an across-the-board decrease in fecundity, not to disturbances. For repeated, spatially random disturbance, a different model applies. For habitat destruction on regional scales (reduction in ecosystem area without disturbance in remnant areas), one must, in contrast, apply species-area relations based on the distribution of different habitat types (e.g., elevational and rainfall gradients, physiographic and edaphic variability). The error in interpretation of the basic model is presented, followed by clarification of model usage and development of a new model that applies to disturbance events.

Physical Description

6 p.

Notes

OSTI as DE96006655

Source

  • Other Information: PBD: [1996]

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  • Other: DE96006655
  • Report No.: ANL/ER/PP--84565
  • Grant Number: W-31109-ENG-38
  • DOI: 10.2172/211290 | External Link
  • Office of Scientific & Technical Information Report Number: 211290
  • Archival Resource Key: ark:/67531/metadc667129

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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Creation Date

  • February 1, 1996

Added to The UNT Digital Library

  • June 29, 2015, 9:42 p.m.

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  • Dec. 16, 2015, 5:06 p.m.

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Loehle, C. Habitat destruction and the extinction debt revisited, report, February 1, 1996; Illinois. (digital.library.unt.edu/ark:/67531/metadc667129/: accessed November 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.