Institute of Aquatic Science and Technology, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan; Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan; College of Fisheries and Aquatic Sciences, Western Philippines University, Puerto Princesa City 5300, Philippines.
Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan; Center for the Study of Sediments, College of Hydrosphere Science, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan.
Mar Pollut Bull. 2024 Oct;207:116859. doi: 10.1016/j.marpolbul.2024.116859. Epub 2024 Aug 17.
This study examined the sediment metal fractions and availability to infer bioaccumulation in marine harbor benthic organisms. Total metals were analyzed using atomic absorption spectrometry and inductively coupled plasma-optical emission spectrometry for chemical fractions and organisms. The results showed similar metal concentrations and distribution driven by rivers and harbor pollution. We found significant differences in metal accumulation in marine benthic groups, highest in scavenger species. Their metal concentrations in decreasing order were 1.97-4568, 0.10-1260, 1.64-159, and 0.105-112 μg g dw for hermit crabs, forams, bivalves, and polychaetes. Moreover, certain organisms, such as tusk shells, sea pens, bivalves, forams, and isopods, may exhibit selective metal accumulation. Biota-sediment accumulation factors (>1) were highest for essential metals like Cu, Zn, and Mn, while toxic metals like As, Cr, Co, and Ni increased. This concurrent assessment provides more comprehensive data for metal bioaccumulation in marine benthic ecosystems.
本研究通过分析海洋港湾底栖生物体内的金属元素总量以及不同化学形态的分布，来评估港湾沉积物中金属元素的生物可利用性及其对底栖生物的影响。结果表明，河流和港湾污染对金属浓度和分布具有相似的驱动作用。本研究还发现，不同海洋底栖生物群落在金属元素的积累上存在显著差异，以食腐动物的金属浓度最高。其中，寄居蟹、有孔虫、双壳类和多毛类的金属浓度依次为 1.97-4568、0.10-1260、1.64-159 和 0.105-112μg g dw。此外，某些生物体，如象牙贝、海笔、双壳类、有孔虫和等足类，可能表现出对特定金属元素的选择性积累。对于铜、锌和锰等必需金属，生物-沉积物积累因子（>1）较高，而砷、铬、钴和镍等有毒金属则增加。本研究提供了更全面的海洋底栖生态系统中金属元素生物积累的数据。
