Niche shift can impair the ability to predict invasion risk in the marine realm: an illustration using Mediterranean fish invaders.

Climatic niche conservatism, the tendency of species-climate associations to remain unchanged across space and time, is pivotal for forecasting the spread of invasive species and biodiversity changes. Indeed, it represents one of the key assumptions underlying species distribution models (SDMs), the main tool currently available for predicting range shifts of species. However, to date, no comprehensive assessment of niche conservatism is available for the marine realm. We use the invasion by Indo-Pacific tropical fishes into the Mediterranean Sea, the world's most invaded marine basin, to examine the conservatism of the climatic niche. We show that tropical invaders may spread far beyond their native niches and that SDMs do not predict their new distributions better than null models. Our results suggest that SDMs may underestimate the potential spread of invasive species and call for prudence in employing these models in order to forecast species invasion and their response to environmental change.

[1]  A. Hirzel,et al.  Evaluating the ability of habitat suitability models to predict species presences , 2006 .

[2]  T. Oberdorff,et al.  Identifying climatic niche shifts using coarse‐grained occurrence data: a test with non‐native freshwater fish , 2011 .

[3]  B. Galil.  Taking stock: inventory of alien species in the Mediterranean sea , 2009, Biological Invasions.

[4]  N. Mouquet,et al.  Biodiversity and Climate Change: Integrating Evolutionary and Ecological Responses of Species and Communities , 2010 .

[5]  David K. Skelly,et al.  Biotic Multipliers of Climate Change , 2012, Science.

[6]  B. Petitpierre,et al.  Response to Comment on “Climatic Niche Shifts Are Rare Among Terrestrial Plant Invaders” , 2012, Science.

[7]  Carsten F. Dormann,et al.  Towards novel approaches to modelling biotic interactions in multispecies assemblages at large spatial extents , 2012 .

[8]  A. Gimona,et al.  Opening the climate envelope reveals no macroscale associations with climate in European birds , 2008, Proceedings of the National Academy of Sciences.

[9]  A. Peterson,et al.  Evidence of climatic niche shift during biological invasion. , 2007, Ecology letters.

[10]  K. Medley.  Niche shifts during the global invasion of the Asian tiger mosquito, Aedes albopictus Skuse (Culicidae), revealed by reciprocal distribution models , 2010 .

[11]  J. Sarmiento,et al.  Projecting global marine biodiversity impacts under climate change scenarios , 2009 .

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

[13]  E. Sala,et al.  Alien Marine Fishes Deplete Algal Biomass in the Eastern Mediterranean , 2011, PloS one.

[14]  Antoine Guisan,et al.  Unifying niche shift studies: insights from biological invasions. , 2014, Trends in ecology & evolution.

[15]  J. Busby.  BIOCLIM - a bioclimate analysis and prediction system , 1991 .

[16]  M. Fortin,et al.  Measuring ecological niche overlap from occurrence and spatial environmental data , 2012 .

[17]  Steven J. Phillips,et al.  The art of modelling range‐shifting species , 2010 .

[18]  Jorge Soberón,et al.  Niches and distributional areas: Concepts, methods, and assumptions , 2009, Proceedings of the National Academy of Sciences.

[19]  N. Streftaris,et al.  Alien species in the Mediterranean Sea by 2010. A contribution to the application of European Union's Marine Strategy Framework Directive (MSFD). Part I. Spatial distribution , 2010 .

[20]  D. Bellwood,et al.  Global patterns and predictors of tropical reef fish species richness , 2013 .

[21]  H. D. Cooper,et al.  Scenarios for Global Biodiversity in the 21st Century , 2010, Science.

[22]  William Godsoe,et al.  I can't define the niche but I know it when I see it: a formal link between statistical theory and the ecological niche , 2010 .

[23]  M. Harmelin-Vivien,et al.  Temporal Fluctuations and Settlement Patterns of Native and Lessepsian Herbivorous Fishes on the Lebanese Coast (Eastern Mediterranean) , 2004, Environmental Biology of Fishes.

[24]  Rampal S Etienne,et al.  'Niche' or 'distribution' modelling? A response to Warren. , 2013, Trends in ecology & evolution.

[25]  Dan L Warren,et al.  In defense of 'niche modeling'. , 2012, Trends in ecology & evolution.

[26]  E. Azzurro,et al.  Exotic fish species in the Mediterranean Sea: analysis of occurrence records , 2013 .

[27]  Antoine Guisan,et al.  Niche dynamics in space and time. , 2008, Trends in ecology & evolution.

[28]  C. Parmesan,et al.  Poleward shifts in geographical ranges of butterfly species associated with regional warming , 1999, Nature.

[29]  F. Andaloro,et al.  Resource partitioning among early colonizing Siganus luridus and native herbivorous fish in the Mediterranean: an integrated study based on gut-content analysis and stable isotope signatures , 2007, Journal of the Marine Biological Association of the United Kingdom.

[30]  David Mouillot,et al.  Global Biogeography of Reef Fishes: A Hierarchical Quantitative Delineation of Regions , 2013, PloS one.

[31]  Antoine Guisan,et al.  Predicting current and future biological invasions: both native and invaded ranges matter , 2008, Biology Letters.

[32]  Robert P. Anderson,et al.  Maximum entropy modeling of species geographic distributions , 2006 .

[33]  D. L. Le Maitre,et al.  Comment on “Climatic Niche Shifts Are Rare Among Terrestrial Plant Invaders” , 2012, Science.

[34]  R. Solé,et al.  External morphology explains the success of biological invasions. , 2014, Ecology letters.

[35]  John-Arvid Grytnes,et al.  Niche conservatism as an emerging principle in ecology and conservation biology. , 2010, Ecology letters.

[36]  M. Kulbicki,et al.  Ecological traits and environmental affinity explain Red Sea fish introduction into the Mediterranean , 2013, Global change biology.

[37]  J. Carlton,et al.  Restructuring the Sea: profound shifts in the world's most invaded marine ecosystem , 2013 .

[38]  E. Matthysen,et al.  Niche conservatism in non‐native birds in Europe: niche unfilling rather than niche expansion , 2013 .

[39]  W. D. Kissling,et al.  The role of biotic interactions in shaping distributions and realised assemblages of species: implications for species distribution modelling , 2012, Biological reviews of the Cambridge Philosophical Society.

[40]  M. Turelli,et al.  Environmental Niche Equivalency versus Conservatism: Quantitative Approaches to Niche Evolution , 2008, Evolution; international journal of organic evolution.

[41]  T. Dawson,et al.  Predicting the impacts of climate change on the distribution of species: are bioclimate envelope models useful? , 2003 .

[42]  J. Bruno,et al.  The Impact of Climate Change on the World’s Marine Ecosystems , 2010, Science.

[43]  M. Araújo,et al.  Validation of species–climate impact models under climate change , 2005 .

[44]  C. Graham,et al.  Within‐taxon niche structure: niche conservatism, divergence and predicted effects of climate change , 2010 .

[45]  Susan L. Williams,et al.  Marine range shifts and species introductions: comparative spread rates and community impacts , 2010 .

[46]  Charles Troupin,et al.  Bio‐ORACLE: a global environmental dataset for marine species distribution modelling , 2012 .

[47]  O. Hoegh‐Guldberg,et al.  Ecological responses to recent climate change , 2002, Nature.

[48]  Antoine Guisan,et al.  Climatic Niche Shifts Are Rare Among Terrestrial Plant Invaders , 2012, Science.