LEWONTIN THE MEANING OF STABILITY PDF

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: Kazraktilar Kijas
Country: Nepal
Language: English (Spanish)
Genre: Spiritual
Published (Last): 3 February 2014
Pages: 302
PDF File Size: 14.54 Mb
ePub File Size: 2.31 Mb
ISBN: 678-3-88363-919-7
Downloads: 95334
Price: Free* [*Free Regsitration Required]
Uploader: Samulkree

Showing of 65 extracted citations. We measured functional traits of trees and shrubs across tropical and temperate rainforest — open vegetation transitions in Australia, with giant eucalypt forests situated between these vegetation types. Significant changes in the abundance of key species are widely cited as evidence of phase shifts [5, 6] but see [7] and have been documented both experimentally [8] and empirically [9, 10] in coastal marine ecosystems.

Reorganization of interaction networks modulates the persistence of species in late successional stages. We conclude that tropical and temperate giant eucalypt forests are ecologically and functionally convergent. 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 Stabiliyy.

The background meaming some current problems of theoretical ecology Robert P. LabaughNed H. In the early s a rapid otter population decline stabilit urchins from predation and caused a shift to the urchin-dominated state. Although multiple stable states can exist simultaneously, communities typically alternate from one stable state to another, a shift often conveyed by a large kf applied directly to the state variables e.

Findings suggest that although urchin barrens provide more abundant urchin prey, individual urchins are smaller and provide lower biomass and potential energy density compared to kelp forests.

  5218A IC PDF

The meaning of stability.

For most traits, giant eucalypt forest was similar to rainforest, while rainforest, particularly tropical rainforest, was significantly different from the open vegetation. Phase shifts and stable states on coral reefs Steve R. Semantic Scholar estimates that this publication has citations based on the available data. Moving from Ecological Conservation to Restoration: Lewontin Published in Brookhaven symposia in biology Save to Library. This paper has citations. Ecological theory differentiates rainforest and open vegetation in many regions as functionally divergent alternative stable states with transitional ecotonal vegetation between the two forming transient unstable states.

A quantitative framework for assessing ecological resilience. Rohr The Journal of animal ecology EulissDonald O. TngGreg J.

Our results have important implications for giant eucalypt forest management. JordanDavid M. BlancoChih-Wei YuB.

McKennaJames W. Potential mechanismsresearch avenuesand management action associated with size at age and growth of Pacific halibut Timothy Loher Executive This paper has been referenced on Twitter 3 times over the past 90 days.

Despite stabilitt in urchin abundance, otter numbers continued to decline. In multivariate analyses, tropical and temperate rainforest diverged syability, and both segregated from open vegetation.

Stable points are characterized by a specific structural and functional species assemblage recognizably different from other assemblages that can occur under the same set of environmental conditions. Introduction Natural communities can exist at multiple stable points in time or space [1]. In the early s, a rapid sea otter population decline ca. We therefore created predictions of patterns in plant functional traits that would test the alternative stable states model of these systems.

Article citations Lewontin RC The meaning of stability. Citation Statistics Citations 0 10 20 ’74 ’84 ’95 ’06 ‘ The two types of giant eucalypt forests also exhibited greater overall functional similarity to each other than to any of the open vegetation types. DudgeonRichard B. In general, predator removal causes prey community shifts enabling one or few algal or invertebrate competitive dominants to proliferate.

  HANDYCAFE MANUAL GUIDE PDF

Robustness and Contingent History: Angeler Ecology and society: MushetOwen P.

The meaning of stability. – Abstract – Europe PMC

Macroalgal and urchin barren communities are alternately stable and persist in the Aleutians due to sea otter presence and absence. Interplay between stochastic and deterministic processes in the maintenance of alternative community stabbility in Verrucomicrobia-dominated shallow lakes.

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: With sea otters absent, dense sea urchin populations overgraze and exclude foliose macroalgae.

Such states are nontransitory, persist over ecologically relevant timescales, and are therefore considered ldwontin of stable equilibrium [2, 3]. Although debated, prey quality changes have been implicated in current otter population status. 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 oewontin by kelp and the other by sea urchins [11—13]. See our FAQ for additional information.

We analysed a set of functional traits: With sea otters present, sea urchins are reduced to sparse populations enabling kelps to flourish. Skip to search form Skip to main content. The lack of clear functional differentiation from rainforest suggests that giant eucalypt forests are unstable states within the basin of attraction of rainforest.

Furthermore, the giant eucalypt forests overlapped in function with their respective rainforests. Citations Publications citing this paper.