The role of the Rio de la Plata bottom salinity front in accumulating debris
The role of the Rio de la Plata bottom salinity front in accumulating debris
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DOI：
10.1016/s0025-326x(02)00356-9
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发表时间：
2003-02-01
影响因子：
5.8
通讯作者：
Daleo, P
中科院分区：
文献类型：
--
作者：
Acha, EM;Mianzan, HW;Daleo, P
拉普拉塔河是南美洲最重要的河口环境之一，其特点是在河流和河口之间形成了一个交错带的底部盐度锋面。基于底拖网和沿海取样，我们描述了在该锋面的底部和海岸线上发现的碎片的分布、类型和数量。塑料和塑料袋是这两个地区的主要垃圾类型。锋面上游的总碎屑浓度总是显着高于下游，说明锋面起到了积累碎屑的屏障作用。此外，很大一部分碎片最终聚集在锋面位置上游的沿海地区。这一地区特别敏感，因为海岸线包括一个联合国教科文组织人和生物圈保护区和一个拉姆萨尔遗址，而且海岸线对许多珍贵物种具有重要的生态意义。(C)2002爱思唯尔科学有限公司。保留所有权利。
The Rio de la Plata, one of the most important South American estuarine environments, is characterized by a bottom salinity front that generates an ecotone between the river and the estuary. Based on bottom trawls and costal sampling we describe the distribution, types, and amount of debris found in the bottom and shoreline across this front. Plastics and plastic bags were the main debris types in both areas. Concentrations of total debris upriver the front were always significantly higher than downriver the front showing that the front acts as a barrier accumulating debris. Moreover, a large part of debris end ups accumulated in the coastal area upriver the frontal position. This area is particularly sensitive because the coastline encompasses an UNESCO Man and the Biosphere Reserve and a Ramsar site, and due to the ecological significance of the front for many valuable species. (C) 2002 Elsevier Science Ltd. All rights reserved.