Global change and eutrophication of coastal waters
Global change and eutrophication of coastal waters
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DOI：
10.1093/icesjms/fsp047
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发表时间：
2009-08-01
影响因子：
3.3
通讯作者：
Justic, Dubravko
中科院分区：
文献类型：
--
作者：
Rabalais, Nancy N.;Turner, R. Eugene;Justic, Dubravko
全球变化的累积影响，包括气候变化、人口增加以及更密集的工业化和农业企业，可能会继续并加剧河口和沿海水域的富营养化进程。因此，有毒有害的藻类大量繁殖、水质下降、栖息地和自然资源丧失以及河口和沿海水域缺氧的严重程度(氧气耗竭)及其程度等富营养化症状将会增加。全球气候变化可能会导致水温升高，层结加剧，淡水和营养物质流入全球许多地区的沿海水域。过去的经验和模型预测都表明，这些变化将导致初级生产力增加，浮游植物和大型藻类现存量增加，以及更频繁或更严重的缺氧。营养物质负荷和层化增加的负面后果可能部分但只是暂时的，被中低纬度地区更强或更频繁的热带风暴活动所抵消。考虑到全球变化的负面影响，现在需要减少沿海水域的营养物质负荷，以防止水质进一步恶化。
The cumulative effects of global change, including climate change, increased population, and more intense industrialization and agri-business, will likely continue and intensify the course of eutrophication in estuarine and coastal waters. As a result, the symptoms of eutrophication, such as noxious and harmful algal blooms, reduced water quality, loss of habitat and natural resources, and severity of hypoxia (oxygen depletion) and its extent in estuaries and coastal waters will increase. Global climate changes will likely result in higher water temperatures, stronger stratification, and increased inflows of freshwater and nutrients to coastal waters in many areas of the globe. Both past experience and model forecasts suggest that these changes will result in enhanced primary production, higher phytoplankton and macroalgal standing stocks, and more frequent or severe hypoxia. The negative consequences of increased nutrient loading and stratification may be partly, but only temporarily, compensated by stronger or more frequent tropical storm activity in low and mid-latitudes. In anticipation of the negative effects of global change, nutrient loadings to coastal waters need to be reduced now, so that further water quality degradation is prevented.