FN Archimer Export Format PT J TI Can we generate robust species distribution models at the scale of the Southern Ocean? BT AF FABRI-RUIZ, Salome Danis, Bruno David, Bruno Saucède, Thomas AS 1:1;2:2;3:1,3;4:1; FF 1:;2:;3:;4:; C1 Biogéosciences; UMR 6282 CNRS; Université Bourgogne Franche-Comté; Dijon ,France Laboratoire de Biologie Marine; Université Libre de Bruxelles (ULB); Brussels ,Belgium Muséum national d'Histoire naturelle; Paris ,France C2 UNIV FRANCHE COMTE, FRANCE UNIV LIBRE BRUSSELS, BELGIUM MNHN, FRANCE IN DOAJ IF 3.993 TC 14 UR https://archimer.ifremer.fr/doc/00458/56990/58881.pdf https://archimer.ifremer.fr/doc/00458/56990/58882.pdf LA English DT Article DE ;Antarctic;biogeography;conservation;Echinoidea;ecological niche;random forest;sampling effort;sub-Antarctic AB Aim Species distribution modelling (SDM) represents a valuable alternative to predict species distribution over vast and remote areas of the ocean. We tested whether reliable SDMs can be generated for benthic marine organisms at the scale of the Southern Ocean. We aimed at identifying the main large‐scale factors that determine the distribution of the selected species. The robustness of SDMs was tested with regards to sampling effort, species niche width and biogeography. Location Southern Ocean. Methods The impact of sampling effort was tested using two sets of data: one set with all presence‐only data available until 2005, and a second set using all data available until 2015 including recent records from campaigns carried out during the Census of Antarctic Marine Life (CAML) and the International Polar Year (IPY) period (2005–2010). The accuracy of SDMs was tested using a ground‐truthing approach by comparing recent presence/absence data collected during the CAML and IPY period to pre‐CAML model predictions. Results Our results show the significance of the SDM approach and the role of abiotic factors as important drivers of species distribution at broad spatial scale. The addition of recent data to the models significantly improved the prediction of SDM and changed the respective contributions of environmental predictors. However, the intensity of change varied between models depending on sampling tools, species ecological niche width and biogeographic barriers to dispersal. Main conclusions We highlight the need for new data and the significance of the ground‐truthing approach to test the accuracy of SDMs. We show the importance of data collected through international initiatives, su ch as the CAML and IPY to the improvement of species distribution modelling at broad spatial scales. Finally, we discussed the relevance of SDM as a relevant marine conservation tool particularly in the context of climate change and the definition of Marine Protected Areas. PY 2019 PD JAN SO Diversity And Distributions SN 1366-9516 PU Wiley VL 25 IS 1 UT 000455265600004 BP 21 EP 37 DI 10.1111/ddi.12835 ID 56990 ER EF