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Sensitivity of the population growth rate to demographic variability within and between phases of the disturbance cycle.

Publication ,  Journal Article
Morris, WF; Tuljapurkar, S; Haridas, CV; Menges, ES; Horvitz, CC; Pfister, CA
Published in: Ecology letters
December 2006

For species in disturbance-prone ecosystems, vital rates (survival, growth and reproduction) often vary both between and within phases of the cycle of disturbance and recovery; some of this variation is imposed by the environment, but some may represent adaptation of the life history to disturbance. Anthropogenic changes may amplify or impede these patterns of variation, and may have positive or negative effects on population growth. Using stochastic population projection matrix models, we develop stochastic elasticities (proportional derivatives of the long-run population growth rate) to gauge the population effects of three types of change in demographic variability (changes in within- and between-disturbance-phase variability and phase-specific changes). Computing these elasticities for five species of disturbance-influenced perennial plants, we pinpoint demographic rates that may reveal adaptation to disturbance, and we demonstrate that species may differ in their responses to different types of changes in demographic variability driven by climate change.

Duke Scholars

Published In

Ecology letters

DOI

EISSN

1461-0248

ISSN

1461-023X

Publication Date

December 2006

Volume

9

Issue

12

Start / End Page

1331 / 1341

Related Subject Headings

  • Stochastic Processes
  • Population Growth
  • Plants
  • Models, Statistical
  • Humans
  • Ecosystem
  • Ecology
  • Ecology
  • Climate
  • Adaptation, Biological
 

Citation

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MLA
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Morris, W. F., Tuljapurkar, S., Haridas, C. V., Menges, E. S., Horvitz, C. C., & Pfister, C. A. (2006). Sensitivity of the population growth rate to demographic variability within and between phases of the disturbance cycle. Ecology Letters, 9(12), 1331–1341. https://doi.org/10.1111/j.1461-0248.2006.00988.x
Morris, W. F., S. Tuljapurkar, C. V. Haridas, E. S. Menges, C. C. Horvitz, and C. A. Pfister. “Sensitivity of the population growth rate to demographic variability within and between phases of the disturbance cycle.Ecology Letters 9, no. 12 (December 2006): 1331–41. https://doi.org/10.1111/j.1461-0248.2006.00988.x.
Morris WF, Tuljapurkar S, Haridas CV, Menges ES, Horvitz CC, Pfister CA. Sensitivity of the population growth rate to demographic variability within and between phases of the disturbance cycle. Ecology letters. 2006 Dec;9(12):1331–41.
Morris, W. F., et al. “Sensitivity of the population growth rate to demographic variability within and between phases of the disturbance cycle.Ecology Letters, vol. 9, no. 12, Dec. 2006, pp. 1331–41. Epmc, doi:10.1111/j.1461-0248.2006.00988.x.
Morris WF, Tuljapurkar S, Haridas CV, Menges ES, Horvitz CC, Pfister CA. Sensitivity of the population growth rate to demographic variability within and between phases of the disturbance cycle. Ecology letters. 2006 Dec;9(12):1331–1341.
Journal cover image

Published In

Ecology letters

DOI

EISSN

1461-0248

ISSN

1461-023X

Publication Date

December 2006

Volume

9

Issue

12

Start / End Page

1331 / 1341

Related Subject Headings

  • Stochastic Processes
  • Population Growth
  • Plants
  • Models, Statistical
  • Humans
  • Ecosystem
  • Ecology
  • Ecology
  • Climate
  • Adaptation, Biological