Department of Marine Sciences and Convergent Technology, Hanyang University, 1271 Sa-3 dong, Ansan, Gyeonggi-do 426-791, Republic of Korea.
Mar Pollut Bull. 2013 Sep 15;74(1):187-98. doi: 10.1016/j.marpolbul.2013.07.004. Epub 2013 Jul 26.
We investigated the environmental impacts of long-line aquaculture of Pacific oysters (Crassostrea gigas) on sediment geochemistry and carbon oxidation by sulfate reduction and diffusive benthic nutrient flux in a coastal ecosystem in Korea. Inventories of the NH4(+) and HPO4(2-) at the farm site were 7.7-11.5 and 1.8-8.0 times higher, respectively, than those at a reference site. Sulfate reduction rates (SRRs) at the oyster farm were 2.4-5.2 times higher than SRRs at the reference site. The SRRs at the farm site were responsible for 48-99% (average 70%) of the total C oxidation in the sediment. The diffusive benthic fluxes of NH4(+) and HPO4(2-) at the oyster farm were comparable to 30-164% and 19-58%, respectively, of the N and P demands for primary production, and were responsible for the enhanced benthic microalgal biomass on the surface sediment.
我们研究了韩国沿海生态系统中太平洋牡蛎（Crassostrea gigas）的延绳式养殖对底质地球化学和碳氧化的环境影响，包括硫酸盐还原和扩散型底栖营养盐通量。养殖区的 NH4(+) 和 HPO4(2-) 含量分别比参照区高 7.7-11.5 倍和 1.8-8.0 倍。牡蛎养殖场的硫酸盐还原速率（SRR）比参照区高 2.4-5.2 倍。养殖场的 SRR 负责 48-99%（平均 70%）的沉积物总碳氧化。牡蛎养殖场的 NH4(+) 和 HPO4(2-) 的扩散型底栖通量分别相当于初级生产力对 N 和 P 需求的 30-164%和 19-58%，并导致表层沉积物中底栖微藻生物量增加。
