|Author(s)||Marzloff Martin1, 2, Oliver Eric C. J.1, 3, Barrett Neville S.1, Holbrook Neil J.1, 4, James Lainey1, Wotherspoon Simon J.1, 5, Johnson Craig1|
|Affiliation(s)||1 : Univ Tasmania, Inst Marine & Antarctic Studies, Hobart, Tas, Australia.
2 : IFREMER, Ctr Bretagne, DYNECO Res Unit, Benth & Coastal Ecol Lab LEBCO, Plouzane, France.
3 : Dalhousie Univ, Dept Oceanog, Halifax, NS, Canada.
4 : Univ Tasmania, Australian Res Council Ctr Excellence Climate Ext, Hobart, Tas, Australia.
5 : Australian Antarctic Div, Kingston, Tas, Australia.
|Source||Nature Climate Change (1758-678X) (Nature Publishing Group), 2018-10 , Vol. 8 , N. 10 , P. 873 (8p.)|
|WOS© Times Cited||8|
The effects of climate-driven ocean change on reef habitat-forming species are diverse(1,2) and can be deleterious to the structure and functioning of seafloor communities(3-5). Although responses of shallow coral- or seaweed-based reef communities to environmental changes are a focus of ecological research in the coastal zone(1,4-6), the ecology of habitat-forming organisms on deeper mesophotic reefs remains poorly known. These reefs are typically highly biodiverses(7,8) and productive as a result of massive nutrient recycling(9). Based on seafloor imagery obtained from an autonomous underwater vehicle(8), we related change in community composition on deep reefs (30-90 m) across a latitudinal gradient (25-45 degrees S) in southeastern Australia to high-resolution environmental and oceanographic data, and predicted future changes using downscaled climate change projections for the 2060s(10-12). This region is recognized as a global hotspot for ocean warming(13). The models show an overall tropicalization trend in these deep temperate reef communities, but different functional groups associate differentially to environmental drivers and display a diversity of responses to projected ocean change. We predict the emergence of novel deep-reef assemblages by the 2060s that have no counterpart on reefs today, which is likely to underpin shifts in biodiversity and ecosystem functioning.
Marzloff Martin, Oliver Eric C. J., Barrett Neville S., Holbrook Neil J., James Lainey, Wotherspoon Simon J., Johnson Craig (2018). Differential vulnerability to climate change yields novel deep-reef communities. Nature Climate Change, 8(10), 873 (8p.). Publisher's official version : https://doi.org/10.1038/s41558-018-0278-7 , Open Access version : https://archimer.ifremer.fr/doc/00461/57268/