LEWONTIN THE MEANING OF STABILITY PDF

Local stability. • Alternate stable states. Page Alternate stable states. Time. Parameter. Min. Max. Page Richard Lewontin. “The meaning of stability” . R. C. Lewontin, “The meaning of stability,” Brookhaven Symposia in Biology, vol. 22, pp. 13–24, Lewontin RC () The meaning of stability. In: Diversity and Stability in Ecological Systems Brookhaven Symp Biol pp. 13– PubMed.

Author: Tygot Faull
Country: Colombia
Language: English (Spanish)
Genre: Video
Published (Last): 2 July 2005
Pages: 385
PDF File Size: 10.79 Mb
ePub File Size: 2.28 Mb
ISBN: 180-4-68926-349-5
Downloads: 27751
Price: Free* [*Free Regsitration Required]
Uploader: Tygonris

The lack of clear functional differentiation from rainforest suggests that giant eucalypt forests are unstable states within the basin of attraction of rainforest. In multivariate analyses, tropical and temperate rainforest diverged functionally, and both segregated from open vegetation.

In ecological studies in the Aleutian Islands, the presence and absence of dense sea otter populations can instigate state shifts between two alternately stable nearshore communities, one dominated by kelp and the other by sea urchins [11—13].

Citations Publications citing this paper. Lrwontin theory differentiates rainforest and open vegetation lwontin many regions as functionally divergent alternative stable states with transitional ecotonal vegetation between the two forming transient unstable states. Phase shifts and stable states on coral reefs Steve R. Angeler Ecology and society: McKennaJames W. This paper has citations. See our FAQ for additional information.

The meaning of stability.

We measured functional traits of trees and shrubs across tropical and temperate rainforest stabillty open vegetation transitions in Australia, with giant eucalypt forests situated between these vegetation types.

Rohr The Journal of animal ecology Robustness and Contingent History: A quantitative framework for assessing ecological resilience.

Introduction Natural communities can exist at multiple stable points in time or space [1]. DudgeonRichard B. With sea otters absent, dense sea urchin populations overgraze and exclude foliose macroalgae. Moving from Ecological Conservation to Restoration: This study examined otter prey abundance, size, biomass, and potential energy density in remnant kelp forest and urchin-dominated communities to determine if alternate stable states affect od quality.

  ABERYSTWYTH UNIVERSITY PROSPECTUS PDF

BlancoChih-Wei YuB. Although multiple stable states can exist simultaneously, communities typically alternate from one stable state to another, a shift often conveyed by a large perturbation applied stabiilty to the state variables e.

stabiilty Article citations Lewontin RC The meaning of stability. Such states are nontransitory, persist over ecologically relevant timescales, and are therefore considered domains of stable equilibrium [2, 3].

With sea otters present, sea urchins are reduced to sparse populations enabling kelps to flourish. Despite increases in urchin abundance, otter numbers continued to decline.

The meaning of stability.

Findings suggest that although urchin barrens provide more abundant urchin prey, individual lewonrin are smaller and provide lower biomass and potential energy density compared to kelp forests. Semantic Scholar estimates that this publication has citations based on the available data. Furthermore, the giant eucalypt forests overlapped in function with their respective rainforests.

In the early s, a rapid sea otter population decline ca. For most traits, giant eucalypt forest was similar to rainforest, while rainforest, particularly tropical rainforest, was significantly different from the open vegetation.

Interplay between stochastic and deterministic processes in the maintenance of alternative community states in Verrucomicrobia-dominated shallow stabipity.

Stable points are characterized by a rhe structural and functional species assemblage recognizably different from other assemblages that can occur under the same set sstability environmental conditions.

  LA MAISON DE BERNARDA ALBA TEXTE INTGRAL PDF

We atability created predictions of patterns in plant functional traits that would test the alternative stable states model of these systems. Showing of 65 extracted citations. By clicking accept or continuing to use the site, you agree to the terms outlined in our Privacy PolicyTerms of Serviceand Dataset License.

Kelp Forests versus Urchin Barrens: JordanDavid M. EulissDonald O. Shifts to urchin barrens do affect prey quality but changes are likely compensated by increased prey densities and are insufficient in explaining current otter population status in the Aleutians.

This paper has been referenced on Twitter 3 times over the past 90 days. We analysed a set of functional traits: The background and some current problems of theoretical ecology Robert P.

Lewontin Published in Brookhaven symposia in biology Save to Library. Citation Statistics Citations 0 10 20 ’74 ’84 ’95 ’06 ‘ In the early atability a rapid otter population decline released urchins from predation and caused a shift to the urchin-dominated state.

The meaning of stability. – Semantic Scholar

Our results have important implications for giant eucalypt forest management. The two types of giant eucalypt forests also exhibited greater overall functional similarity to each other than to any of the open vegetation types. Macroalgal and urchin barren communities are alternately stable and persist in the Aleutians due to sea otter presence and absence. Reorganization of interaction networks modulates the persistence of species in late successional stages.