Integrative Oceanography Division, Scripps Institution of Oceanography, 9500 Gilman Drive, La Jolla, CA 92093-0218, USA.
Mar Pollut Bull. 2011 Apr;62(4):701-17. doi: 10.1016/j.marpolbul.2011.01.027. Epub 2011 Feb 26.
We examined Cu contamination effects on macrobenthic communities and Cu concentration in invertebrates within Shelter Island Yacht Basin, San Diego Bay, California. Results indicate that at some sites, Cu in sediment has exceeded a threshold for "self defense" mechanisms and highlight the potential negative impacts on benthic faunal communities where Cu accumulates and persists in sediments. At sites with elevated Cu levels in sediment, macrobenthic communities were not only less diverse but also their total biomass and body size (individual biomass) were reduced compared to sites with lower Cu. Cu concentration in tissue varied between species and within the same species, reflecting differing abilities to "regulate" their body load. The spatial complexity of Cu effects in a small marina such as SIYB emphasizes that sediment-quality criteria based solely on laboratory experiments should be used with caution, as they do not necessarily reflect the condition at the community and ecosystem levels.
我们研究了库藏岛游艇码头（加利福尼亚州圣地亚哥湾）中大型底栖动物群落和无脊椎动物体内铜污染的影响。结果表明，在某些地点，沉积物中的铜含量已经超过了“自我防御”机制的阈值，并强调了在铜在沉积物中积累和持续存在的情况下，对底栖动物群落可能产生的负面影响。在沉积物中铜含量较高的地点，大型底栖动物群落不仅种类较少，而且总生物量和个体生物量（个体生物量）也比铜含量较低的地点减少。组织中的铜浓度在不同物种之间以及同一物种内有所不同，反映了它们调节体内负荷的不同能力。像 SIYB 这样的小码头中铜影响的空间复杂性强调了仅基于实验室实验的沉积物质量标准应谨慎使用，因为它们不一定反映群落和生态系统水平的状况。
