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Impacts of a simulated heat wave on composition of a marine community

2010; Wiley; Volume: 119; Issue: 12 Linguagem: Inglês

10.1111/j.1600-0706.2010.18663.x

1600-0706

Cascade J. B. Sorte, S. Adam Fuller, Matthew E. S. Bracken,

Marine and coastal plant biology

OikosVolume 119, Issue 12 p. 1909-1918 Impacts of a simulated heat wave on composition of a marine community Cascade J. B. Sorte, Cascade J. B. Sorte Bodega Marine Laboratory, Univ. of California – Davis, PO Box 247, Bodega Bay, CA 94923, USASearch for more papers by this authorAdam Fuller, Adam Fuller Bodega Marine Laboratory, Univ. of California – Davis, PO Box 247, Bodega Bay, CA 94923, USASearch for more papers by this authorMatthew E. S. Bracken, Matthew E. S. Bracken Bodega Marine Laboratory, Univ. of California – Davis, PO Box 247, Bodega Bay, CA 94923, USASearch for more papers by this author Cascade J. B. Sorte, Cascade J. B. Sorte Bodega Marine Laboratory, Univ. of California – Davis, PO Box 247, Bodega Bay, CA 94923, USASearch for more papers by this authorAdam Fuller, Adam Fuller Bodega Marine Laboratory, Univ. of California – Davis, PO Box 247, Bodega Bay, CA 94923, USASearch for more papers by this authorMatthew E. S. Bracken, Matthew E. S. Bracken Bodega Marine Laboratory, Univ. of California – Davis, PO Box 247, Bodega Bay, CA 94923, USASearch for more papers by this author First published: 18 November 2010 https://doi.org/10.1111/j.1600-0706.2010.18663.xCitations: 47 C. J. B. Sorte, Bodega Marine Laboratory, Univ. of California – Davis, PO Box 247, Bodega Bay, CA 94923, USA. E-mail: cjsorte@ucdavis.edu Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Abstract Extreme events, such as heat waves, are predicted to increase in frequency, duration, and severity as a consequence of climate change. However, global change research generally focuses on increases in mean temperatures and fails to address the potential impacts of increasingly severe heat waves. In addition, climate change may interact with another primary threat to biodiversity, non-native species invasions. We assessed the impacts of a short-term heat wave on the marine epibenthic fouling community of Bodega Harbor, California, USA, by exposing experimental mesocosms to a simulated heat wave in the laboratory and then monitoring community development in the field. We hypothesized that (1) juveniles would be more susceptible to heat waves than adults, (2) native species would be more susceptible than non-native species, and (3) non-native species would recover more quickly than native species. We observed no effect of the heat wave on juvenile species richness, either initially or during the recovery period, relative to communities at ambient seawater temperatures. In contrast, total adult species richness initially declined in response to the heat wave. Adult community composition also changed in heat-wave treatments, with non-natives representing the majority of species and occupying more cover than native species. The reduction in native richness associated with the heat wave persisted through the recovery period, whereas invasive richness was actually higher on heat-wave versus ambient plates at 95 days. Heat waves have the potential to alter the composition of this community because of species-, taxon-, and/or origin-specific responses; for example, non-native bryozoans displayed greater resistance than native and non-native tunicates. Recovery from the heat wave occurred via growth of resistant individuals and larval recruitment. Our study highlights the importance of considering species' and community responses to heat waves, and not just mean predicted temperature increases, to evaluate the consequences of climate change. Citing Literature Volume119, Issue12December 2010Pages 1909-1918 RelatedInformation