Environmental Research Lab., Sabine Island, 32561, Gulf Breeze, FL, USA.
Environ Monit Assess. 1993 Feb;24(3):219-29. doi: 10.1007/BF00545979.
Dissolved oxygen was continuously monitored in eight sites of northern Gulf of Mexico estuaries in August, 1990. Monte Carlo analyses on subsamples of the data were used to evaluate several commonly used monitoring strategies. Monitoring strategies which involve single point sampling of dissolved oxygen may often misclassify an estuary as having good water quality. In the case of shallow, often well-mixed estuaries that experience diurnal cycles, such monitoring often does not occur at night, during the time of lowest dissolved oxygen concentration. Our objective was to determine the minimum sampling effort required to correctly classify a site in terms of the observed frequency of hypoxia. Tests concluded that the most successful classification strategy used the minimum dissolved oxygen concentration from a continuously sampled 24-hour period.
1990 年 8 月，对墨西哥湾北部河口的 8 个地点的溶解氧进行了连续监测。对数据的子样本进行了蒙特卡罗分析，以评估几种常用的监测策略。涉及溶解氧单点采样的监测策略可能经常错误地将河口归类为水质良好。在那些经常混合良好的浅河口，它们经历昼夜循环，因此监测通常不在夜间进行，也就是溶解氧浓度最低的时候。我们的目标是确定以缺氧发生的观测频率来正确分类站点所需的最小采样量。测试结果表明，最成功的分类策略是使用连续采样 24 小时的最小溶解氧浓度。
