Assessment and distribution of seafloor litter on the deep Ligurian continental shelf and shelf break (NW Mediterranean Sea)

被引:34
作者
Enrichetti, Francesco [1 ]
Dominguez-Carrio, Carlos [2 ,3 ]
Toma, Margherita [1 ]
Bavestrello, Giorgio [1 ]
Canese, Simonepietro [4 ]
Bo, Marzia [1 ]
机构
[1] Univ Genoa, Dipartimento Sci Terra Ambiente & Vita, Corso Europa 26, I-16132 Genoa, Italy
[2] Univ Acores, Okeanos Res Ctr, Dept Oceanog & Pesca, P-9901862 Horta, Portugal
[3] Univ Acores, IMAR Inst Mar, Dept Oceanog & Pesca, P-9901862 Horta, Portugal
[4] Stn Zool Anton Dohrn, I-80121 Naples, Italy
关键词
Marine debris; ALDFG; Longlines; Urban litter; Ligurian Sea; MONOFILAMENT FISHING LINES; MARINE LITTER; SUBMARINE CANYONS; DEBRIS; CORAL; IMPACT; GEAR; MANAGEMENT; ABUNDANCE; HABITATS;
D O I
10.1016/j.marpolbul.2019.110872
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Litter has become a common component of marine ecosystems, and its assessment and monitoring are now of primary interest. Here, we characterized seafloor litter in the mesophotic depth range of the Ligurian Sea, one of the most urbanized basins of the Mediterranean Sea. Eighty sites (30-220 m depth) were investigated by by means of ROV video transects. Data regarding environmental parameters and anthropic pressures were used to explain the distribution of human-derived objects. Litter resulted widely distributed in all the investigated areas, with maximum densities of 7900 items ha(-1). It was mainly represented by abandoned fishing gears, with highest abundances found on the deep coastal rocky shoals exploited by artisanal and recreational fishermenfishermen. Urban litter, primarily represented by plastics, was generally higher close to shore, especially near river mouths and large harbors. Litter densities reported here are among the highest ever recorded in Europe, denoting the urgency for specific actions to prevent further spreading.
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页数:14
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