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Assessing annual, seasonal and spatial trends in copper sediment concentrations from a California agricultural waterbody
Journal of Environmental Science and Health, Part A ( IF 2.1 ) Pub Date : 2022-05-03 , DOI: 10.1080/10934529.2022.2069977
Lenwood W Hall 1 , Ronald D Anderson 1
Affiliation  

Abstract

The objective of this study was to assess annual, seasonal and spatial trends in copper sediment concentrations in an agricultural California stream (Cache Slough) based on sampling 12 sites over two seasons (spring and fall) in 2012, 2013 and 2014. The relationship between copper sediment concentrations and precipitation was also evaluated. The results from this study showed that copper sediment concentrations from Cache Slough ranging from 19 to 63 ug/g dw were similar to concentrations reported in European agricultural streams. Copper sediment concentrations were not reported to increase over time in this agricultural waterbody where copper was used as a fungicide. However, spatial differences in copper sediment concentrations were reported among sites with the highest concentrations in the middle waterbody section. Seasonal analysis showed no significant difference in copper sediment concentrations for both spring and fall for 2012 and 2013 but 2014 spring concentrations were statistically higher than fall concentrations when precipitation was lower than the two previous years. There were no statistically significant relationships between copper sediment concentrations and precipitation for the three-year period based on an analysis by year and season.



中文翻译:

评估加利福尼亚农业水体中铜沉积物浓度的年度、季节和空间趋势

摘要

本研究的目的是根据 2012 年、2013 年和 2014 年两个季节(春季和秋季)的 12 个地点的采样,评估加州农业溪流(Cache Slough)中铜沉积物浓度的年度、季节和空间趋势。铜沉积物浓度和降水也进行了评估。这项研究的结果表明,Cache Slough 的铜沉积物浓度范围为 19 至 63 ug/g dw,与欧洲农业河流中报告的浓度相似。据报道,在这个使用铜作为杀菌剂的农业水体中,铜沉积物的浓度不会随着时间的推移而增加。然而,在中水体部分浓度最高的地点之间报告了铜沉积物浓度的空间差异。季节性分析显示,2012 年和 2013 年春季和秋季的铜沉积物浓度没有显着差异,但当降水量低于前两年时,2014 年春季的浓度高于秋季浓度。根据年份和季节的分析,三年期间铜沉积物浓度与降水之间没有统计学上的显着关系。

更新日期:2022-05-03
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