Phylogenetic and functional evidence suggests that deep-ocean ecosystems are highly sensitive to environmental change and direct human disturbance

TitlePhylogenetic and functional evidence suggests that deep-ocean ecosystems are highly sensitive to environmental change and direct human disturbance
Publication TypeJournal Article
Year of Publication2018
AuthorsAshford O.S, Kenny A.J, Frojan C, Bonsall M.B, Horton T., Brandt A., Bird G.J, Gerken S., Rogers A.D
JournalProceedings of the Royal Society B-Biological Sciences
Volume285
Date Published2018/08
Type of ArticleArticle
ISBN Number0962-8452
Accession NumberWOS:000441725900010
Keywordsbenthic biodiversity; bottom trawling; climate change; climate-change; community phylogenetics; community structure; competitive-exclusion; deep sea; ecology; Environmental Sciences &; evolution; Evolutionary Biology; functional traits; Life Sciences & Biomedicine - Other Topics; particle-size diversity; patterns; predation; sea benthos; software; supertree
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.

DOI10.1098/rspb.2018.0923
Student Publication: 
No