An assessment of metal contamination in mangrove sediments and leaves from Punta Mala Bay, Pacific Panama
An assessment of metal contamination in mangrove sediments and leaves from Punta Mala Bay, Pacific Panama
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DOI：
10.1016/j.marpolbul.2004.11.047
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发表时间：
2005-05-01
影响因子：
5.8
通讯作者：
Guzman, HM
中科院分区：
文献类型：
--
作者：
Defew, LH;Mair, JM;Guzman, HM
由于许多热带沿海地区的城市化速度不断加快，人类活动对红树林的影响继续引起越来越多的关注。蓬塔马拉湾位于巴拿马太平洋沿岸，遭受着强烈的人类活动，这些活动可能对剩余的红树林造成危害。实地观察表明，蓬塔马拉湾内的红树林受到大量未经处理的生活污水、雨水径流和航运活动产生的一系列扩散性输入。结果表明，Fe、Zn、Pb、Mn、Cu、Zn、Ni、Pb、Fe、Cr、Cd等8种重金属含量较高，属于中度至重度污染，对红树林的再生和生长威胁最大。然而，以前的生物调查表明，正在进行的红树林更新和占主导地位的林分结构的Laguncularia racemosa，连同大量的幼苗和树苗。(c)2004爱思唯尔有限公司保留所有权利。
Due to the growing rate of urbanisation in many tropical coastal areas, there continues to be an increasing concern in relation to the impact of anthropogenic activities on mangrove forests. Punta Mala Bay is located on the Pacific coast of Panama and suffers from intense anthropogenic activities that are potentially harmful to the remaining mangrove forests. Field observations reveal that the mangrove stand within Punta Mala Bay receives high inputs of untreated domestic sewage, storm water run-off and a range of diffuse inputs from shipping activities. Results from analysis of eight metals (Mn, Cu, Zn, Ni, Pb, Fe, Cr, Cd) showed that Fe, Zn and Pb were in concentrations high enough to conclude moderate to serious contamination within the bay, and thus pose the most threat to the regeneration and growth of the mangrove. However, previous biological surveys indicate ongoing mangrove regeneration and domination of stand structure by Laguncularia racemosa, together with high numbers of seedlings and saplings. (c) 2004 Elsevier Ltd. All rights reserved.