PDF(Pubmed)
Abstract：
The organic enrichment effects on the meiofauna and nematofauna were assessed for field sediment and other experimental ones enriched with organic matters conducted in the laboratory for 4 weeks. Also, dissolved oxygen (DO) and pH were monitored for each one. The abundance and diversity of meiofaunal groups and nematofauna varied. Strong significant correlations were found between DO and the studied items. Nematoda was the most abundant group in the field sediment and other experimental ones; their counts increased with the increase in organic enrichments and were dominated by deposit feeders. Amphipoda, Ostracoda and predator/omnivore nematodes disappeared in highly organic-enriched sediments. Changes in DO and organic enrichments might be the more attributable reasons for the alteration of the meiobenthic assemblages. The generic compositions of Nematoda provide a good indicator for environmental alterations.
摘要：
在实验室中进行了为期4周的田间沉积物和其他富含有机物的实验，评估了有机物对小型动物和线虫的富集作用。此外，每个都监测溶解氧(DO)和pH。meiofaunal类群和线虫的丰度和多样性各不相同。在DO和研究项目之间发现了很强的显着相关性。线虫是田间沉积物和其他实验沉积物中最丰富的组；它们的计数随着有机富集的增加而增加，并以沉积物馈线为主。两栖动物,Ostracoda和捕食者/杂食线虫在高度富含有机物的沉积物中消失了。DO和有机富集的变化可能是下底栖组合改变的更多原因。Nematoda的一般组成为环境变化提供了很好的指标。
