Water quality changes in south-central Ontario lakes and the role of local factors in regulating lake response to regional stressors
Water quality changes in south-central Ontario lakes and the role of local factors in regulating lake response to regional stressors
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DOI：
10.1139/f2011-041
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发表时间：
2011-06
影响因子：
2.4
通讯作者：
E. PalmerMichelle;D. YanNorman;M. PatersonAndrew;E. GirardRobert
中科院分区：
文献类型：
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作者：
E. PalmerMichelle;D. YanNorman;M. PatersonAndrew;E. GirardRobert
对安大略省多塞特郡附近8个湖泊的长期监测表明，过去30年来水质发生了显着变化。然而，多塞特湖的趋势可能无法代表安大略省中南部其他湖泊的变化，因为多塞特湖面积较小，且湖泊和流域特征的梯度有限。为了确定水质变化的区域范围，我们评估了 36 个不同湖泊的化学变化，这些湖泊在 1981 年至 1990 年间首次采样，并于 2004 年至 2005 年重新采样。与多塞特郡湖泊的趋势类似，区域湖泊的变化包括酸度、钙、电导率、金属和磷的下降，以及溶解有机碳、氮、钠和氯化物的增加。水质变化是由区域压力因素驱动的，包括酸性沉积、气候和湖岸住宅开发。然而，压力源引起的反应因湖泊而异。钠和氯的增加在开发中更大...
The long-term monitoring of eight lakes near Dorset, Ontario, indicates that the water quality has changed significantly over the last 30 years. However, trends in the Dorset lakes may not be representative of changes in other south-central Ontario lakes, as the Dorset lakes are within a small area and span a limited gradient of lake and watershed characteristics. To determine the regional extent of water quality changes, we assessed the chemical changes in 36 diverse lakes that were first sampled between 1981 and 1990 and were resampled in 2004–2005. Similar to trends in the Dorset lakes, changes in the regional lakes included decreasing acidity, calcium, conductivity, metals, and phosphorus, and increasing dissolved organic carbon, nitrogen, sodium, and chloride. Water quality changes were driven by regional stressors, including acidic deposition, climate, and lakeshore residential development. However, stressor-induced responses differed among lakes. Increases in sodium and chloride were greater in dev...