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首页> 外文期刊>Marine ecology progress series >Recovery of benthic macrofauna from sewage sludge disposal in the New York Bight
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Recovery of benthic macrofauna from sewage sludge disposal in the New York Bight

机译：从纽约湾的污水污泥处置中恢复底栖大型动物

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The 12-Mile Dump Site Recovery Study (12MDSRS) was a multi-year, multi-disciplinary field study to monitor the recovery of the benthic ecosystem in the inner New York (NY) Bight following termination of sewage sludge disposal in 1987. Sewage sludge had been dumped at the 12-Mile Dump Site (12MDS) for over 60 yr. In the early 1980s, the 12MDS was receiving the largest volume of sewage sludge of any dump site in the world. Monthly sampling of sediments, benthic macrofauna, and other parameters was conducted for 18 mo during phased cessation of sludge disposal and 21 mo afterward at 3 sites considered to have varying degrees of sludge influence. We used a Before-After-Control-Impact (BACI) design in an attempt to factor out effects of background variability from the effect of termination of sludge disposal. The BACI analyses confirmed a sludge cessation effect for only some of the taxa that showed large increases in abundance after cessation. Non-metric multidimensional scaling (MDS) ordination indicated a shift in community structure at the most contaminated site towards that at the reference sites within 21 mo post cessation. Differences observed between the Pearson & Rosenberg model and the present study appear to be related to site-specific factors in the inner NY Bight. These factors facilitated the rapid reduction of sewage sludge constituents in surficial sediments after cessation.
机译：这项12英里的垃圾场恢复研究（12MDSRS）是一项多年跨学科的野外研究，旨在监测1987年污水污泥处置终止后纽约内（Bight）内底栖生态系统的恢复情况。污水污泥已在12英里的垃圾场（12MDS）倾倒了60多年。在1980年代初，12MDS接收了世界上所有垃圾场中最大量的污水污泥。在分阶段停止污泥处置的18个月期间，每月进行一次沉积物，底栖大型动物和其他参数的采样，之后在3个被认为具有不同程度的污泥影响的地点进行21个月的采样。我们使用“控制后影响前”（BACI）设计，试图从污泥处置终止的影响中排除背景变化的影响。 BACI分析证实，只有某些类群在停止后的丰度大大增加后才有停止污泥的作用。非度量多维标度（MDS）排序指示停止后21个月内最受污染的地点的社区结构向参考地点的社区结构转移。皮尔森与罗森伯格模型与本研究之间观察到的差异似乎与纽约湾内部的特定地点因素有关。这些因素促进了停止后表层沉积物中污水污泥成分的快速减少。

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