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Phylogenetic and functional evidence suggests that deep-ocean ecosystems are highly sensitive to environmental change and direct human disturbance
Ashford, O.S.; Kenny, A.J.; Barrio Froján, C.R.S.; Bonsall, M.B.; Horton, T.; Brandt, A.; Bird, G.J.; Gerken, S.; Rogers, A.D. (2018). Phylogenetic and functional evidence suggests that deep-ocean ecosystems are highly sensitive to environmental change and direct human disturbance. Proc. - Royal Soc., Biol. Sci. 285(1884): 20180923. https://dx.doi.org/10.1098/rspb.2018.0923
In: Proceedings of the Royal Society of London. Series B. The Royal Society: London. ISSN 0962-8452; e-ISSN 1471-2954
Peer reviewed article  
Available in  Authors 
Keyword
    Marine/Coastal
Authors  Top 
  • Ashford, O.S.
  • Kenny, A.J.
  • Barrio Froján, C.R.S.
  • Bonsall, M.B.
  • Horton, T., more
  • Brandt, A., more
  • Bird, G.J., more
  • Gerken, S.
  • Rogers, A.D.
Abstract
    An understanding of the balance of interspecific competition and the physical environment in structuring organismal communities is crucial because those communities structured primarily by their physical environment typically exhibit greater sensitivity to environmental change than those structured predominantly by competitive interactions. Here, using detailed phylogenetic and functional information, we investigate this question in macrofaunal assemblages from Northwest Atlantic Ocean continental slopes, a high seas region projected to experience substantial environmental change through the current century. We demonstrate assemblages to be both phylogenetically and functionally under-dispersed, and thus conclude that the physical environment, not competition, may dominate in structuring deep-ocean communities. Further, we find temperature and bottom trawling intensity to be among the environmental factors significantly related to assemblage diversity. These results hint that deep-ocean communities are highly sensitive to their physical environment and vulnerable to environmental perturbation, including by direct disturbance through fishing, and indirectly through the changes brought about by climate change.
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