کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6359404 1315639 2013 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Setting limits for acceptable change in sediment particle size composition: Testing a new approach to managing marine aggregate dredging
ترجمه فارسی عنوان
محدودیت هایی برای تغییر قابل قبول ترکیب اندازه ذرات رسوب: تست رویکرد جدیدی برای مدیریت لایروبی خشکسالی
کلمات کلیدی
عمیق دریائی، شرایط مجوز، دریایی، رسوبات، ماکروفوانا، کانال انگلیسی،
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات اقیانوس شناسی
چکیده انگلیسی
A baseline dataset from 2005 was used to identify the spatial distribution of macrofaunal assemblages across the eastern English Channel. The range of sediment composition found in association with each assemblage was used to define limits for acceptable change at ten licensed marine aggregate extraction areas. Sediment data acquired in 2010, 4 years after the onset of dredging, were used to assess whether conditions remained within the acceptable limits. Despite the observed changes in sediment composition, the composition of sediments in and around nine extraction areas remained within pre-defined acceptable limits. At the tenth site, some of the observed changes within the licence area were judged to have gone beyond the acceptable limits. Implications of the changes are discussed, and appropriate management measures identified. The approach taken in this study offers a simple, objective and cost-effective method for assessing the significance of change, and could simplify the existing monitoring regime.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Marine Pollution Bulletin - Volume 73, Issue 1, 15 August 2013, Pages 86-97
نویسندگان
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