Warming-related shifts in the distribution of two competing coastal wrasses

Mariangela Sciandra, Renato Chemello, Marco Milazzo, Antonio Di Franco, Federico Quattrocchi, Ernesto Azzurro, Fabio Badalamenti, Enric Sala, Paolo Guidetti, José A. García-Charton

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


Warming induces organisms to adapt or to move to track thermal optima, driving novel interspecific interactions or altering pre-existing ones. We investigated how rising temperatures can affect the distribution of two antagonist Mediterranean wrasses: the ‘warm-water’ Thalassoma pavo and the ‘cool-water’ Coris julis. Using field surveys and an extensive database of depth-related patterns of distribution of wrasses across 346 sites, last-decade and projected patterns of distribution for the middle (2040–2059) and the end of century (2080–2099) were analysed by a multivariate model-based framework. Results show that T. pavo dominates shallow waters at warmest locations, where C. julis locates deeper. The northernmost shallow locations are dominated by C. julis where T. pavo abundance is low. Projections suggest that the W-Mediterranean will become more suitable for T. pavo whilst large sectors of the E-Mediterranean will be unsuitable for C. julis, progressively restricting its distribution range. These shifts might result in fish communities’ re-arrangement and novel functional responses throughout the food-web.
Original languageEnglish
Pages (from-to)55-67
Number of pages13
JournalMarine Environmental Research
Publication statusPublished - 2016

All Science Journal Classification (ASJC) codes

  • Oceanography
  • Aquatic Science
  • Pollution


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