کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6355701 1315593 2016 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Debris size and buoyancy influence the dispersal distance of stranded litter
ترجمه فارسی عنوان
اندازه بذر و شناوری بر روی میزان پراکندگی بستر رشته تاثیر می گذارند
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات اقیانوس شناسی
چکیده انگلیسی
Recent at sea surveys of floating macro-debris in the southeast Atlantic Ocean found that debris increases in size with distance from shore, suggesting that many smaller items, which dominate litter close to urban source areas, sink before dispersing far into the ocean. We test whether this pattern is evident in beach litter in the same region. Freshly stranded beach litter was collected at increasing distances (0 km, 100 km, 200 km and 2800 km) from Cape Town, a major urban litter source. Mean size and buoyancy of litter items increased significantly with distance from Cape Town. Size-specific sedimentation due to the ballasting effect of biofouling is a plausible explanation for the disappearance of smaller, less buoyant items. Our results provide further evidence that many low buoyancy items sink and support the hypothesis that size and buoyancy are strong predictors of dispersal distance for floating debris.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Marine Pollution Bulletin - Volume 110, Issue 1, 15 September 2016, Pages 371-377
نویسندگان
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