@article {5611, title = {Marine sublittoral benthos fails to track temperature in response to climate change in a biogeographical transition zone}, journal = {ICES Journal of Marine Science}, year = {2018}, abstract = {

Species ranges are shifting globally to track temperature changes in response to climate warming, with substantial variability among taxa. In
the English Channel, a biogeographical transition zone between the cold temperate and warm temperate provinces of the North-East Atlantic, distribution shifts have been relatively well documented for plankton, fish and intertidal benthic organisms, but little information is available on sublittoral benthos. Following a description of the magnitude of the sea bottom temperature (SBT) rise, the changes in the distribution and occupancy of 65 benthic invertebrate species were analysed by comparing data collected throughout the English Channel at more
than 200 stations sampled during a cool period in the 1960s{\textendash}1970s and at present in 2012{\textendash}2014. A non-uniform rise in SBT for the last three
decades was observed at the regional scale, varying from 0.07 to 0.54C per decade. This rise differs from that reported for sea surface temperature
(SST) in stratified areas suggesting that SBT should be used rather than SST to analyse responses of subtidal organisms to climate change. Despite shifts in both minimum and maximum sea bottom isotherms (2.5 and 3.2 km.year1, respectively), the distribution centroid shift of most species remained \<1.0 km.year1, regardless of the average temperatures they usually experience. Conversely, decreases were observed in the occurrence of most cold-water species and increases were found in the occurrence of most warm-water species. These results suggest that ongoing climate change could lead to a decrease in benthic biodiversity at range limits, especially where connection routes are lacking for new migrants.

}, doi = {doi:10.1093/icesjms/fsy095}, author = {Fran{\c c}ois Gaudin and Nicolas Desroy and Stanislas Dubois and Caroline Broudin and Louis Cabioch and J{\'e}r{\^o}me Fournier and Franck Gentil and Jacques Grall and C{\'e}line Houbin and Patrick Le Mao and Eric Thi{\'e}baut} } @article {5366, title = {Regional and latitudinal patterns of soft-bottom macrobenthic invertebrates along French coasts: Results from the RESOMAR database}, journal = {Journal of Sea Research}, volume = {130}, year = {2017}, pages = {96 - 106}, abstract = {

This study aims to describe the patterns of soft bottom macrozoobenthic richness along French coasts. It is based on a collaborative database developed by the {\textquotedblleft}R{\'e}seau des Stations et Observatoires Marins{\textquotedblright} (RESOMAR). We investigated patterns of species richness in sublittoral soft bottom habitats (EUNIS level 3) at two different spatial scales: 1) seaboards: English Channel, Bay of Biscay and Mediterranean Sea and 2) 0.5{\textdegree} latitudinal and longitudinal grid. Total observed richness, rarefaction curves and three incidence-based richness estimators (Chao2, ICE and Jacknife1) were used to compare soft bottom habitats species richness in each seaboard. Overall, the Mediterranean Sea has the highest richness and despite higher sampling effort, the English Channel hosts the lowest number of species. The distribution of species occurrence within and between seaboards was assessed for each major phylum using constrained rarefaction curves. The Mediterranean Sea hosts the highest number of exclusive species. In pairwise comparisons, it also shares a lower proportion of taxa with the Bay of Biscay (34.1\%) or the English Channel (27.6\%) than that shared between these two seaboards (49.7\%). Latitudinal species richness patterns along the Atlantic and English Channel coasts were investigated for each major phylum using partial LOESS regression controlling for sampling effort. This showed the existence of a bell-shaped latitudinal pattern, highlighting Brittany as a hotspot for macrobenthic richness at the confluence of two biogeographic provinces.

}, keywords = {France, Latitudinal pattern, Regional pattern, Soft-bottom, Species richness, Zoobenthos}, issn = {1385-1101}, doi = {https://doi.org/10.1016/j.seares.2017.03.011}, url = {http://www.sciencedirect.com/science/article/pii/S1385110116302660}, author = {R{\'e}gis K. Gallon and Nicolas Lavesque and Jacques Grall and C{\'e}line Labrune and Antoine Gr{\'e}mare and Guy Bachelet and Hugues Blanchet and Paulo Bonif{\'a}cio and Vincent M.P. Bouchet and Jean-Claude Dauvin and Nicolas Desroy and Franck Gentil and Laurent Guerin and C{\'e}line Houbin and J{\'e}r{\^o}me Jourde and Sandrine Laurand and Michel Le Duff and Vincent Le Garrec and Xavier de Montaudouin and Fr{\'e}d{\'e}ric Olivier and Francis Orvain and Pierre-Guy Sauriau and Eric Thi{\'e}baut and Olivier Gauthier} } @inbook {4008, title = {Invert{\'e}br{\'e}s marins introduits dans le Golfe Normand-Breton depuis 1920}, booktitle = {Atlas Permanent de la mer et du littoral}, volume = {7}, number = {51-53}, year = {2015}, publisher = {Universit{\'e} de Nantes}, organization = {Universit{\'e} de Nantes}, address = {Nantes}, author = {Laurent Godet and Patrick Le Mao and Eric Thi{\'e}baut and Christian Reti{\`e}re and Louis Cabioc{\textquoteright}h and Franck Gentil and Nicolas Desroy and J{\'e}r{\^o}me Fournier} }