Abstract Coastal ocean productivity is often dependent on riverine sources of nutrients, yet it can be difficult to determine how far the influence of the river extends. The northern Gulf of Mexico (GOM) receives freshwater and nutrients discharged mainly from the Mississippi and Atchafalaya Rivers. We used nutrient/salinity relationships to (i) differentiate the nutrient inputs of the two rivers and (ii) determine the potential extent of the zones where productivity is affected by each. We identified three different zones: one close to the coast having a linear nutrient/salinity relationship where physical forcing (river flow) dominates, one offshore with nutrient (N or Si) concentrations

中文翻译：

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用营养盐度比对大陆架分区生产力进行分类

摘要 沿海海洋生产力通常依赖于河流的营养来源，但很难确定河流的影响范围。墨西哥湾北部 (GOM) 接收主要从密西西比河和阿查法拉亚河排放的淡水和养分。我们使用养分/盐度关系来 (i) 区分两条河流的养分输入和 (ii) 确定生产力受各自影响的区域的潜在范围。我们确定了三个不同的区域：一个靠近海岸具有线性养分/盐度关系，其中物理强迫（河流流量）占主导地位，一个离岸有养分（N 或 Si）浓度