The ecological impacts of marine debris : unraveling the demonstrated evidence from what is perceived
Browne, Mark Anthony
Underwood, A. J.
van Franeker, Jan A.
Thompson, Richard C.
Amaral-Zettler, Linda A.
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Anthropogenic debris contaminates marine habitats globally, leading to several perceived ecological impacts. Here, we critically and systematically review the literature regarding impacts of debris from several scientific fields to understand the weight of evidence regarding the ecological impacts of marine debris. We quantified perceived and demonstrated impacts across several levels of biological organization that make up the ecosystem and found 366 perceived threats of debris across all levels. Two hundred and ninety-six of these perceived threats were tested, 83% of which were demonstrated. The majority (82%) of demonstrated impacts were due to plastic, relative to other materials (e.g., metals, glass) and largely (89%) at suborganismal levels (e.g., molecular, cellular, tissue). The remaining impacts, demonstrated at higher levels of organization (i.e., death to individual organisms, changes in assemblages), were largely due to plastic marine debris (>1 mm; e.g., rope, straws, and fragments). Thus, we show evidence of ecological impacts from marine debris, but conclude that the quantity and quality of research requires improvement to allow the risk of ecological impacts of marine debris to be determined with precision. Still, our systematic review suggests that sufficient evidence exists for decision makers to begin to mitigate problematic plastic debris now, to avoid risk of irreversible harm.
Author Posting. © Ecological Society of America, 2016. This article is posted here by permission of Ecological Society of America for personal use, not for redistribution. The definitive version was published in Ecology 97 (2016): 302–312, doi: 10.1890/14-2070.1.
Suggested CitationArticle: Rochman, Chelsea, Browne, Mark Anthony, Underwood, A. J., van Franeker, Jan A., Thompson, Richard C., Amaral-Zettler, Linda A., "The ecological impacts of marine debris : unraveling the demonstrated evidence from what is perceived", Ecology 97 (2016): 302–312, DOI:10.1890/14-2070.1, https://hdl.handle.net/1912/8832
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