Bae Hanna, Lee Jung-Ho, Song Sung Joon, Park Jinsoon, Kwon Bong-Oh, Hong Seongjin, Ryu Jongseong, Choi Kyungsik, Khim Jong Seong
School of Earth and Environmental Sciences & Research Institute of Oceanography, Seoul National University, Seoul, Republic of Korea.
Department of Marine Biotechnology, Anyang University, Ganghwagun, Incheon, Republic of Korea.
Chemosphere. 2017 Mar;171:681-691. doi: 10.1016/j.chemosphere.2016.12.112. Epub 2016 Dec 27.
In this study, spatiotemporal dynamics of macrofaunal assemblages and their associations with environmental conditions were examined in Jinhae Bay (10 sites), where the obvious sources of pollution including industries, oyster farms (hanging cultures), and municipal discharges has surrounded. The survey had performed over five consecutive seasons in 2013-2014. Target sedimentary variables included grain size, organic content, C/N ratio, carbon and nitrogen stable isotope ratios, and some heavy metals. Five ecological quality indices (EcoQ) were calculated from the benthic community data to evaluate ecological qualities in site-specific manner. Jinhae Bay is a shallow (depths range, 11-24 m) and typical semi-enclosed bay. The benthic environments represented mud dominated bottoms (>70%) with fairly substantial organic content levels (>2%) over all five seasons. Seasonal patterns were observed with peak abundances in the spring and distinctive macrozoobenthos species shifts in the summer. The spring bloom could be explained by drastic increases of some polychaetes, mainly Capitella sp., at certain site, particularly near the shore. The oyster farms situated in the innermost locations seem to provide organic-rich bottoms being dominated by opportunistic species and/or organic pollution indicator species, such as Lumbrineris longifolia, Capitella sp., and Paraprionospio patiens. In general, the EcoQ indicators indicated that Jinhae Bay was moderately polluted, with exceptionally poor EcoQ in a few locations during the specific season(s). Overall, adverse effects on benthic community was broadly attributable to contaminations of heavy metals and nearby aquatic farm activities in Jinhae Bay, which requires a prompt action toward ecosystem-based management practice in the given area.
在本研究中，我们调查了镇海湾（10个站点）大型底栖动物群落的时空动态及其与环境条件的关系。镇海湾周边存在明显的污染源，包括工业、牡蛎养殖场（吊养）和城市污水排放。调查于2013 - 2014年连续五个季节进行。目标沉积变量包括粒度、有机含量、碳氮比、碳和氮稳定同位素比以及一些重金属。根据底栖生物群落数据计算了五个生态质量指数（EcoQ），以特定地点的方式评估生态质量。镇海湾是一个浅湾（深度范围为11 - 24米），是典型的半封闭海湾。在所有五个季节中，底栖环境以泥质为主（>70%），有机含量水平相当高（>2%）。观察到季节性模式，春季丰度达到峰值，夏季大型底栖动物物种有明显变化。春季的生物量增加可以解释为某些多毛类动物，主要是 Capitella sp.，在特定地点，特别是靠近海岸的地方急剧增加。位于最内侧的牡蛎养殖场似乎提供了富含有机物的底部，这些底部以机会主义物种和/或有机污染指示物种为主，如长叶索沙蚕、Capitella sp. 和双齿围沙蚕。总体而言，EcoQ指标表明镇海湾受到中度污染，在特定季节的一些地点生态质量特别差。总体而言，对底栖生物群落的不利影响主要归因于镇海湾的重金属污染和附近的水产养殖活动，这需要在该地区迅速采取基于生态系统的管理措施。
