Norwegian Institute for Water Research, Gaustadalléen 21, NO-0349 Oslo, Norway; Center for Coastal Research, University of Agder, NO-4604 Kristiansand, Norway.
Norwegian Institute for Water Research, Gaustadalléen 21, NO-0349 Oslo, Norway.
Mar Pollut Bull. 2019 Dec;149:110560. doi: 10.1016/j.marpolbul.2019.110560. Epub 2019 Sep 26.
Disposal of mine tailings in marine shallow water ecosystems represents an environmental challenge, and the present paper reports results from a field study in Frænfjorden, Norway, which is subject to such disposal. Structural and functional responses of benthic infauna and epifauna were investigated along a gradient from heavy tailings deposition to reference conditions. The tailings clearly impacted the faunal composition, with lowered species number close to the outfall. Total abundance of infauna increased in the most impacted area due to dominance of opportunistic species, whereas the epifauna was reduced and represented by a few scattered specimens only. In the most impacted area functional responses included an increase in mobile carnivores/omnivores and species utilizing symbionts. Sessile and tube-living taxa, and deposit and suspension feeders decreased, probably due to smothering in combination with tailings-associated changes of the substrate. Functional diversity decreased for both infauna and epifauna, but less than the structural diversity.
在海洋浅水生态系统中处理矿山尾矿是一个环境挑战，本文报告了挪威 Frænfjorden 的一项现场研究结果，该地区就存在这样的尾矿处理情况。研究调查了从尾矿大量沉积到对照条件下的底栖无脊椎动物和附生无脊椎动物的结构和功能响应。尾矿明显影响了动物群的组成，在靠近出水口的地方，物种数量减少。由于机会主义物种的优势，受影响最严重的区域中的底栖动物总丰度增加，而附生动物减少，只有少数分散的标本。在受影响最严重的区域，功能反应包括增加移动的肉食动物/杂食动物和利用共生体的物种。固着和管状生物以及沉积物和悬浮食者减少，可能是由于掩埋以及与尾矿相关的基质变化所致。底栖无脊椎动物和附生无脊椎动物的功能多样性都减少了，但减少的程度小于结构多样性。
