Global regime shift dynamics of catastrophic sea urchin overgrazing

DOI HANDLE HANDLE Web Site Web Site 被引用文献13件 オープンアクセス
  • S. D. Ling
    Institute for Marine and Antarctic Studies, University of Tasmania, Private Bag 129, Hobart, Tasmania 7001, Australia
  • R. E. Scheibling
    Department of Biology, Dalhousie University, Halifax, Nova Scotia, Canada
  • A. Rassweiler
    Marine Science Institute, University of California, Santa Barbara, CA, USA
  • C. R. Johnson
    Institute for Marine and Antarctic Studies, University of Tasmania, Private Bag 129, Hobart, Tasmania 7001, Australia
  • N. Shears
    University of Auckland, Leigh Marine Laboratory, Auckland, New Zealand
  • S. D. Connell
    School of Earth and Environmental Sciences, The University of Adelaide, Adelaide, South Australia, Australia
  • A. K. Salomon
    School of Resource and Environmental Management, Simon Fraser University, Burnaby, British Columbia, Canada
  • K. M. Norderhaug
    Norwegian Institute for Water Research, Oslo and University of Oslo, Oslo, Norway
  • A. Pérez-Matus
    Subtidal Ecology Laboratory and Marine Conservation Center, Estación Costera de Investigaciones Marinas, Pontificia Universidad Católica de Chile, Casilla 114-D, Santiago, Chile
  • J. C. Hernández
    Departamento de Biología Animal, Universidad de La Laguna, Canary Islands, Spain
  • S. Clemente
    Departamento de Biología Animal, Universidad de La Laguna, Canary Islands, Spain
  • L. K. Blamey
    Marine Research Institute, Department of Biological Sciences, University of Cape Town, Cape Town, South Africa
  • B. Hereu
    Universitat de Barcelona, Barcelona, Spain
  • E. Ballesteros
    Centre d'Estudis Avançats de Blanes, CEAB-CSIC, Blanes, Spain
  • E. Sala
    National Geographic Society, Washington, DC, USA
  • J. Garrabou
    Centre Mediterrani d'Investigacions Marines i Ambientals, ICM-CSIC, Barcelona, Spain
  • E. Cebrian
    Centre d'Estudis Avançats de Blanes, CEAB-CSIC, Blanes, Spain
  • M. Zabala
    Departament d'Ecologia, Facultat de Biologia, Universitat de Barcelona, Barcelona, Spain
  • D. Fujita
    Tokyo University of Marine Science and Technology, Tokyo, Japan
  • L. E. Johnson
    Département de biologie and Québec-Océan, Université Laval, Québec, Quebec, Canada G1V 0A6

書誌事項

公開日
2015-01-05
権利情報
  • https://royalsociety.org/journals/ethics-policies/data-sharing-mining/
DOI
  • 10.1098/rstb.2013.0269
公開者
The Royal Society

この論文をさがす

説明

<jats:p> A pronounced, widespread and persistent regime shift among marine ecosystems is observable on temperate rocky reefs as a result of sea urchin overgrazing. Here, we empirically define regime-shift dynamics for this grazing system which transitions between productive macroalgal beds and impoverished urchin barrens. Catastrophic in nature, urchin overgrazing in a well-studied Australian system demonstrates a discontinuous regime shift, which is of particular management concern as recovery of desirable macroalgal beds requires reducing grazers to well below the initial threshold of overgrazing. Generality of this regime-shift dynamic is explored across 13 rocky reef systems (spanning 11 different regions from both hemispheres) by compiling available survey data (totalling 10 901 quadrats surveyed <jats:italic>in situ</jats:italic> ) plus experimental regime-shift responses (observed during a total of 57 <jats:italic>in situ</jats:italic> manipulations). The emergent and globally coherent pattern shows urchin grazing to cause a discontinuous ‘catastrophic’ regime shift, with hysteresis effect of approximately one order of magnitude in urchin biomass between critical thresholds of overgrazing and recovery. Different life-history traits appear to create asymmetry in the pace of overgrazing versus recovery. Once shifted, strong feedback mechanisms provide resilience for each alternative state thus defining the catastrophic nature of this regime shift. Importantly, human-derived stressors can act to erode resilience of desirable macroalgal beds while strengthening resilience of urchin barrens, thus exacerbating the risk, spatial extent and irreversibility of an unwanted regime shift for marine ecosystems. </jats:p>

収録刊行物

被引用文献 (13)*注記

もっと見る

キーワード

問題の指摘

ページトップへ