Projected climate change and the changing biogeography of coastal Mediterranean fishes

Aim: To forecast the potential effects of climate change in the Mediterranean Sea on the species richness and mean body size of coastal fish assemblages. Location: The Mediterranean Sea. Methods: Using an ensemble forecasting approach, we used species distribution modelling to project the potential distribution of 288 coastal fish species by the middle and end of the 21st century based on the IPCC A2 scenario implemented with the Mediterranean climatic model NEMOMED8. Results: A mean rise of 1.4 °C was projected for the Mediterranean Sea by the middle of the 21st century and 2.8 °C by the end of the 21st century. Projections for the end of the century suggest that: (1) 54 species are expected to lose their climatically suitable habitat, (2) species richness was predicted to decrease across 70.4% of the continental shelf area, especially in the western Mediterranean Sea and several parts of the Aegean Sea, and (3) mean fish body size would increase over 74.8% of the continental shelf area. Small-bodied species that are not targeted by either commercial or recreational fleets presented, on average, the highest predicted decrease in geographic range size. Main conclusions: Projected climate change in the Mediterranean Sea may have deleterious effects on coastal fish diversity, including a significant loss of climatically suitable habitat for endemic fish species. In addition, climate change may contribute to the loss of small and low trophic-level fishes, which may have ecosystem-wide impacts by reducing food supply to larger and higher trophic-level species. Fishing pressure is already selectively removing large-bodied species from marine ecosystems, and so fishing and climatic change might act in tandem to drive both direct and secondary extinctions.

[1]  Duncan J. Wingham,et al.  Importance of seasonal and annual layers in controlling backscatter to radar altimeters across the percolation zone of an ice sheet , 2006 .

[2]  Joan Moranta,et al.  The recreational fishery off Majorca Island (western Mediterranean): some implications for coastal resource management , 2005 .

[3]  Stéphanie Mahévas,et al.  A future for marine fisheries in Europe (Manifesto of the Association Française d’Halieumétrie) , 2011 .

[4]  W. Thuiller,et al.  Predicting species distribution: offering more than simple habitat models. , 2005, Ecology letters.

[5]  F. Giorgi,et al.  Climate change hot‐spots , 2006 .

[6]  Scarla J. Weeks,et al.  Ocean warming alters species abundance patterns and increases species diversity in an African sub‐tropical reef‐fish community , 2012 .

[7]  T. Pitcher,et al.  Fishing down the deep , 2006 .

[8]  R. Mann,et al.  The biology of the eel Anguilla anguilla (L.) in an English chalk stream and interactions with juvenile trout Salmo trutta L. and salmon Salmo salar L. , 1991, Hydrobiologia.

[9]  P. Balvanera,et al.  Quantifying the evidence for biodiversity effects on ecosystem functioning and services. , 2006, Ecology letters.

[10]  Freshwater Biology– looking back, looking forward , 2007 .

[11]  J. R. Landis,et al.  The measurement of observer agreement for categorical data. , 1977, Biometrics.

[12]  Simon Jennings,et al.  Use of size-based production and stable isotope analyses to predict trophic transfer efficiencies and predator-prey body mass ratios in food webs , 2002 .

[13]  Michel Rixen,et al.  Modeling the Mediterranean Sea interannual variability during 1961–2000: Focus on the Eastern Mediterranean Transient , 2010 .

[14]  D. Mouillot,et al.  Functional Structure of Biological Communities Predicts Ecosystem Multifunctionality , 2011, PloS one.

[15]  J. Sólmundsson,et al.  Groundfish species diversity and assemblage structure in Icelandic waters during recent years of warming , 2010 .

[16]  G. Sugihara,et al.  Spatial analysis shows that fishing enhances the climatic sensitivity of marine fishes , 2008 .

[17]  G. Yohe,et al.  A globally coherent fingerprint of climate change impacts across natural systems , 2003, Nature.

[18]  Mark New,et al.  Ensemble forecasting of species distributions. , 2007, Trends in ecology & evolution.

[19]  J. Sypek,et al.  Cryptobia sp. (Mastigophora: Kinetoplastida) from the gills of marine fishes in the Chesapeake Bay , 1981 .

[20]  J. Stein,et al.  Using species distribution models to infer potential climate change-induced range shifts of freshwater fish in south-eastern Australia , 2011 .

[21]  B. Worm,et al.  Rapid worldwide depletion of predatory fish communities , 2003, Nature.

[22]  Vasiliki S. Karpouzi,et al.  The Mediterranean Sea under siege: spatial overlap between marine biodiversity, cumulative threats and marine reserves , 2012 .

[23]  J. Greenwood,et al.  The relationship between abundance and body size in natural animal assemblages , 1993 .

[24]  K. Frank,et al.  Global variation in marine fish body size and its role in biodiversity-ecosystem functioning , 2010 .

[25]  D. Mouillot,et al.  Ecological correlates of dispersal success of Lessepsian fishes , 2008 .

[26]  Martin Hermy,et al.  Unexpectedly high 20th century floristic losses in a rural landscape in northern France , 2008 .

[27]  J. Merilä,et al.  Detecting and managing fisheries-induced evolution. , 2007, Trends in ecology & evolution.

[28]  Malin L. Pinsky,et al.  Unexpected patterns of fisheries collapse in the world's oceans , 2011, Proceedings of the National Academy of Sciences.

[29]  Sara Dolnicar,et al.  Analyzing Destination Images: A Perceptual Charting Approach , 2000 .

[30]  G. Lassalle,et al.  Impact of twenty‐first century climate change on diadromous fish spread over Europe, North Africa and the Middle East , 2009 .

[31]  Wilfried Thuiller,et al.  The Mediterranean Sea as a ‘cul‐de‐sac’ for endemic fishes facing climate change , 2010 .

[32]  William J. Sydeman,et al.  Global Seabird Response to Forage Fish Depletion—One-Third for the Birds , 2011, Science.

[33]  M. Araújo,et al.  BIOMOD – a platform for ensemble forecasting of species distributions , 2009 .

[34]  S. Dolédec,et al.  NICHE SEPARATION IN COMMUNITY ANALYSIS: A NEW METHOD , 2000 .

[35]  Guy Woodward,et al.  Body size in ecological networks. , 2005, Trends in ecology & evolution.

[36]  Florence Sevault,et al.  Transient climate change scenario simulation of the Mediterranean Sea for the twenty-first century using a high-resolution ocean circulation model , 2006 .

[37]  Stuart I. Rogers,et al.  Climate change and deepening of the North Sea fish assemblage: a biotic indicator of warming seas , 2008 .

[38]  D. Mouillot,et al.  Fish diversity patterns in the Mediterranean Sea: deviations from a mid-domain model , 2009 .

[39]  Omri Allouche,et al.  Assessing the accuracy of species distribution models: prevalence, kappa and the true skill statistic (TSS) , 2006 .

[40]  Dennis Rödder,et al.  Applications and future challenges in marine species distribution modeling , 2011 .

[41]  S. Simpson,et al.  Temperature-driven phenological changes within a marine larval fish assemblage , 2010 .

[42]  James H. Brown,et al.  Macroecology: The Division of Food and Space Among Species on Continents , 1989, Science.

[43]  W. Thuiller.  Patterns and uncertainties of species' range shifts under climate change , 2004 .