气候变化领域集成服务门户(CCPortal): A trawl survey of seafloor macrolitter on the South African continental shelf

CCPortal

DOI	10.1016/j.marpolbul.2019.110741
	A trawl survey of seafloor macrolitter on the South African continental shelf
	Ryan P.G.; Weideman E.A.; Perold V.; Durholtz D.; Fairweather T.P.
发表日期	2020
ISSN	0025326X
卷号	150
英文摘要	Demersal trawls provide an index of seafloor macrolitter abundance, but there are no published data from sub-Saharan Africa. We collected litter items from 235 trawls conducted to assess fish abundance off South Africa. Only 17% of trawls contained litter (3.4 items·km−2, 2.1 kg·km−2 but only 0.2 kg·km−2 excluding four megalitter items). Plastic items predominated (88%), of which 77% floated once cleaned of epibionts. One LDPE bag manufactured three months before being caught carried pelagic goose barnacles Lepas anserifera, confirming that biofouling leads to rapid sinking of floating plastics. Fishery/shipping wastes comprised 22% of litter items (98% by mass; 73% excluding megalitter items); the remainder was general waste – mostly packaging or other single-use items – that could come from land- or ship-based sources. Litter was more abundant in deep water close to Cape Town. The annual demersal trawl survey is a useful way to monitor seafloor litter off South Africa. © 2019 Elsevier Ltd
英文关键词	Fishing gear; Monitoring; Seafloor litter; Sedimentation; Single use plastics
语种	英语
scopus关键词	Elastomers; Monitoring; Sedimentation; Surveys; Continental shelves; Deep Water; Fish abundance; Fishing gears; Sea floor; Single use; South Africa; Sub-saharan africa; Fisheries; abundance; continental shelf; fishing gear; plastic waste; pollution monitoring; seafloor; sedimentation; trawling; Article; biofouling; Branta leucopsis; continental shelf; environmental monitoring; geographic distribution; Lepas anserifera; parsimony analysis; sedimentation; South African; animal; questionnaire; South Africa; waste; water pollutant; South Africa; Lepadidae; Lepas anserifera; plastic; Animals; Environmental Monitoring; Plastics; South Africa; Surveys and Questionnaires; Waste Products; Water Pollutants
来源期刊	Marine Pollution Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/149333
作者单位	FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, University of Cape Town, Rondebosch, 7701, South Africa; Department of Environmental Affairs, Foreshore, Cape Town, 8001, South Africa
推荐引用方式 GB/T 7714	Ryan P.G.,Weideman E.A.,Perold V.,et al. A trawl survey of seafloor macrolitter on the South African continental shelf[J],2020,150.
APA	Ryan P.G.,Weideman E.A.,Perold V.,Durholtz D.,&Fairweather T.P..(2020).A trawl survey of seafloor macrolitter on the South African continental shelf.Marine Pollution Bulletin,150.
MLA	Ryan P.G.,et al."A trawl survey of seafloor macrolitter on the South African continental shelf".Marine Pollution Bulletin 150(2020).