Northwest Fisheries Science Center

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Document Type: Journal Article
Center: NWFSC
Document ID: 8968
Title: Spatial dispersion of environmental DNA in a nearshore marine habitat
Author: James L. O'Donnell, Ryan P. Kelly, Andrew O. Shelton, J. F. Samhouri, Natalie Lowell, G. D. Williams
Publication Year: 2017
Journal: PeerJ
Keywords: metagenomics,metabarcoding,eDNA,

Indirect surveys of organismal presence are a key development in ecosystem monitoring in the face of increased anthropogenic pressure and dwindling resources for ecological research. Monitoring of organisms using environmental DNA is an especially promising method, given the rapid pace of advancement in technological innovation and cost efficiency in the field of DNA sequencing and quantification. For the first time in a marine environment, we document four key patterns: (1) communities far from one another tend to be less similar than those that are nearby, (2) distinct eDNA communities exist and are distributed in a non-random fashion, (3) diversity declines with distance from shore, and (4) spatial patterning of eDNA is associated with taxon-specific life history characteristics.

Theme: Ecosystem approach to improve management of marine resources
Foci: Characterize the interaction between marine, freshwater and terrestrial ecosystem components.
Assess ecosystem status and trends.