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Extreme climatic event drives range contraction of a habitat-forming species

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dc.contributor Sch Plant Biol
dc.contributor Uwa Oceans Inst
dc.contributor Australian Inst Marine Sci
dc.contributor Australian Institute Of Marine Science
dc.contributor Marine Biol Assoc United Kingdom Lab
dc.contributor University Of Western Australia
dc.contributor Univ Western Australia
dc.contributor Marine Biological Association United Kingdom
dc.contributor Australian Institute Of Marine Science (aims) en SMALE, DAN A. WERNBERG, THOMAS 2017-03-21T01:09:38Z 2013-02-28T06:55:47Z 2013-02-28T06:55:47Z 2019-07-08T02:18:32Z 2017-03-21T01:09:38Z 2017-03-21T01:09:38Z 2013-02-28T06:55:47Z 2019-07-08T02:18:32Z 2013-03-07
dc.identifier 9377 en
dc.identifier.citation Smale DA, Wernberg T (2013) Extreme climatic event drives range contraction of a habitat-forming species. Proceedings of the Royal Society of London B Biological Sciences 280(1754): 20122829 en
dc.identifier.issn 0962-8452
dc.description.abstract Species distributions have shifted in response to global warming in all major ecosystems on the Earth. Despite cogent evidence for these changes, the underlying mechanisms are poorly understood and currently imply gradual shifts. Yet there is an increasing appreciation of the role of discrete events in driving ecological change. We show how a marine heat wave (HW) eliminated a prominent habitat-forming seaweed, Scytothalia dorycarpa, at its warm distribution limit, causing a range contraction of approximately 100 km (approx. 5% of its global distribution). Seawater temperatures during the HW exceeded the seaweed's physiological threshold and caused extirpation of marginal populations, which are unlikely to recover owing to life-history traits and oceanographic processes. Scytothalia dorycarpa is an important canopy-forming seaweed in temperate Australia, and loss of the species at its range edge has caused structural changes at the community level and is likely to have ecosystem-level implications. We show that extreme warming events, which are increasing in magnitude and frequency, can force step-wise changes in species distributions in marine ecosystems. As such, return times of these events have major implications for projections of species distributions and ecosystem structure, which have typically been based on gradual warming trends.
dc.description.sponsorship This work was funded by the Australian Research Council through grants to T. W. Scott Bennett and Thibaut de Bettignies are acknowledged for assistance in the field, and Graham Edgar and Neville Barrett (University of Tasmania) provided some baseline data on Scytothalia dorycarpa. AUV surveys were orchestrated by Stefan Williams at the Australian Centre for Field Robotics (University of Sydney) and the Integrated Marine Observing System (IMOS) of Australia. Blended SST anomalies were provided by the National Weather Service and the NOAA Operational Model Archive Distribution System (NOMADS); we thank Cecile Rousseaux (NASA) for assistance with accessing these data. Ben Radford (AIMS) assisted with the calculation of habitat area within the study region. D. A. S. is funded by a Marie Curie International Incoming Fellowship within the seventh European Community Framework Programme.
dc.description.uri en
dc.language en en
dc.language English
dc.relation.ispartof Proceedings of the Royal Society of London B Biological Sciences en
dc.relation.ispartof Null
dc.subject Kelp Macrocystis-pyrifera
dc.subject Impacts
dc.subject Species Distributions
dc.subject Evolutionary Biology
dc.subject Environmental Sciences & Ecology
dc.subject Ecklonia-radiata Laminariales
dc.subject Marine Biodiversity
dc.subject Macroalgae
dc.subject Western-australia
dc.subject Community
dc.subject Climate Change
dc.subject Heat-wave
dc.subject Life Sciences & Biomedicine - Other Topics
dc.subject Shifts
dc.subject Mortality
dc.subject Marine Heat Wave
dc.subject Range Shifts
dc.subject Biology
dc.subject Australia
dc.subject El-nino
dc.subject Ecology
dc.title Extreme climatic event drives range contraction of a habitat-forming species
dc.type journal article en
dc.identifier.doi 10.1098/rspb.2012.2829
dc.identifier.wos WOS:000313663700015

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