MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsTheme Sections MEPS 435:63-74 (2011) - DOI: https://doi.org/10.3354/meps09234 Patterns and processes of compositional change in a California epibenthic community Cascade J. B. Sorte1,2,3,*, John J. Stachowicz1,2 1Department of Evolution and Ecology, University of California, Davis, California 95616, USA 2Bodega Marine Laboratory, University of California, Bodega Bay, California 94923, USA 3Present address: Department of Environmental, Earth and Ocean Sciences, University of Massachusetts, Boston, Massachusetts 02125, USA *Email: cjsorte@ucdavis.edu ABSTRACT: As human modifications of the earth’s systems have increased, so has interest in understanding past changes in order to predict future ecological trajectories. We compared historical (1969–1971) and contemporary (2005–2009) abundances of species in the marine epibenthic community of Bodega Harbor, California, USA. Between these 2 time periods, we found a decrease in the abundance of native species and an increase in non-native dominance, including of several species that were either rare or absent ~35 yr ago and whose introduction was likely human-mediated. This compositional shift was concurrent with an increase in local water temperature of ~1°C over the same interval. To address the potential role of ocean warming in facilitating the increase of the new dominant species and maintaining compositional shifts, we evaluated the correlation between temperature and recruitment for 15 species. We found that recruitment timing and magnitude were positively related to temperature for non-native species but not for native species overall. Combined with previous results suggesting effects of ocean warming on the relative performance of native vs. non-native species in this community, our study indicates the potential for continued dominance of non-native species in Bodega Harbor due to local temperature increases. Simultaneously, anthropogenic transport has been responsible for several recent introductions of competitively dominant species, and shifts in contaminant loads or other factors between the 2 time periods could also contribute to compositional shifts, both historically and in the future. Our results highlight the need for studies of these additional factors, as well as the mechanisms underlying their effects on compositional shifts, in order to predict future changes. KEY WORDS: Invasive species · Climate change · Ecological forecasting · Marine ecology · Fouling community Full text in pdf format Supplementary material PreviousNextCite this article as: Sorte CJB, Stachowicz JJ (2011) Patterns and processes of compositional change in a California epibenthic community. Mar Ecol Prog Ser 435:63-74. https://doi.org/10.3354/meps09234 Export citation RSS - Facebook - Tweet - linkedIn Cited by Published in MEPS Vol. 435. Online publication date: August 22, 2011 Print ISSN: 0171-8630; Online ISSN: 1616-1599 Copyright © 2011 Inter-Research.