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Predicting the current habitat suitability and future habitat changes of Antarctic jonasfish Notolepis coatsorum in the Southern Ocean
Ran, Q.; Duan, M.; Wang, P.; Ye, Z.; Mou, J.; Wang, X.; Tian, Y.; Zhang, C.; Qiao, H.; Zhang, J. (2022). Predicting the current habitat suitability and future habitat changes of Antarctic jonasfish Notolepis coatsorum in the Southern Ocean. Deep-Sea Res., Part II, Top. Stud. Oceanogr. 199: 105077. https://dx.doi.org/10.1016/j.dsr2.2022.105077
In: Deep-Sea Research, Part II. Topical Studies in Oceanography. Pergamon: Oxford. ISSN 0967-0645; e-ISSN 1879-0100
Peer reviewed article  
Beschikbaar in  Auteurs 
Trefwoorden
    Species distribution
    Notolepis coatsorum Dollo, 1908 [WoRMS]
    Zuidelijke Oceaan [Marine Regions]
    Marien/Kust
Author keywords
    Ensemble model; Climate change; Cosmonaut Sea;
Auteurs  Top 
  • Ran, Q.
  • Duan, M.
  • Wang, P.
  • Ye, Z.
  • Mou, J.
  • Wang, X.
  • Tian, Y.
  • Zhang, C.
  • Qiao, H.
  • Zhang, J.
Abstract
    The Southern Ocean faces many challenges under global climate change. Species distribution models (SDMs) are considered a powerful tool for predicting the potential distributions of species when evaluating the effects of climate change. We employed a partially area-under-the-curve (AUC)-based ensemble model to predict the current habitat suitability and future habitat changes of N. coatsorum in the Southern Ocean. The SDMs developed included six different predictors that contribute to the N. coatsorum distribution: depth accounted for the highest contribution of 33.8%, closely followed by the sea surface temperature (30.3% contribution). The contributions of the sea surface salinity distance from land, sea ice thickness and current velocity were 12.7%, 12.3%, 8.1%, and 2.8%, respectively. N. coatsorum has a suitable distribution area of approximately 5.63 million km2 under current conditions, comprising 29.8% of the Southern Ocean area. A significant expected decrease (43.0%) at the species’ northward edges, especially on the southeast Antarctic coast, may occur in the future as suggested by comparing the current model range to the suitable habitat changes predicted in 2100 under the RCP8.5 scenario, resulting in the formation of three newly gained or remaining climate refugia for N. coatsorum: areas close to the Ronne and Filchner Ice Shelves in the Weddell Sea, the Ross Sea, and along the coast of northeastern Antarctica (including in the Cosmonaut Sea and Prydz Bay). Our ensemble approach for assessing the habitat features of N. coatsorum allows the impacts of climate change on a mesopelagic fish species in the Southern Ocean to be assessed.
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