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首页> 外文期刊>Journal of Environmental Science and Health >The relationship of metals, bifenthrin, physical habitat metrics, grain size, total organic carbon, dissolved oxygen and conductivity to Hyalella sp. abundance in urban California streams
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The relationship of metals, bifenthrin, physical habitat metrics, grain size, total organic carbon, dissolved oxygen and conductivity to Hyalella sp. abundance in urban California streams

机译：金属，联苯菊酯，物理生境指标，粒度，总有机碳，溶解氧和电导率与Hyalella sp。加州市区溪流丰富

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摘要

The objectives of this study were to determine the relationship between Hyalella sp. abundance in four urban California streams and the following parameters: (1) 8 bulk metals (As, Cd, Cr, Cu, Pb, Hg, Ni, and Zn) and their associated sediment Threshold Effect Levels (TELs); (2) bifenthrin sediment concentrations; (3) 10 habitat metrics and total score; (4) grain size (% sand, silt and clay); (5) Total Organic Carbon (TOC); (6) dissolved oxygen; and (7) conductivity. California stream data used for this study were collected from Kirker Creek (2006 and 2007), Pleasant Grove Creek (2006,2007 and 2008), Salinas streams (2009 and 2010) and Arcade Creek (2009 and 2010). Hyalella abundance in the four California streams generally declined when metals concentrations were elevated beyond the TELs. There was also a statistically significant negative relationship between Hyalella abundance and % silt for these 4 California streams as Hyalella were generally not present in silt areas. No statistically significant relationships were reported between Hyalella abundance and metals concentrations, bifenthrin concentrations, habitat metrics, % sand, % clay, TOC, dissolved oxygen and conductivity. The results from this study highlight the complexity of assessing which factors are responsible for determining the abundance of amphipods, such as Hyalella sp., in the natural environment.
机译：这项研究的目的是确定Hyalella sp。之间的关系。加利福尼亚州的四个市区河流的丰度和以下参数：（1）8种散装金属（As，Cd，Cr，Cu，Pb，Hg，Ni和Zn）及其相关的沉积物阈值效应水平（TELs）； （2）联苯菊酯的沉积物浓度； （3）10个栖息地指标和总分； （4）粒度（％的沙子，粉砂和粘土）； （5）总有机碳（TOC）； （6）溶解氧； （7）电导率。本研究使用的加利福尼亚河流数据是从Kirker Creek（2006和2007），Pleasant Grove Creek（2006、2007和2008），Salinas流（2009和2010）以及Arcade Creek（2009和2010）收集的。当金属浓度超过TELs时，加利福尼亚州四个河流中的透明质酸含量通常会下降。由于这4个加州溪流中的透明质酸菌通常不存在，因此透明质酸的丰度与粉尘％之间还存在统计学上显着的负相关关系。透明质酸含量与金属浓度，联苯菊酯浓度，栖息地指标，％沙子，％粘土，TOC，溶解氧和电导率之间没有统计学上的显着关系。这项研究的结果突显了评估哪些因素决定自然环境中两栖类动物（例如Hyalella sp。）的丰度的复杂性。

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