Journal
SCIENCE OF THE TOTAL ENVIRONMENT
Volume 669, Issue -, Pages 41-48Publisher
ELSEVIER
DOI: 10.1016/j.scitotenv.2019.02.425
Keywords
Accumulation; Bioindicator; Seagrass; Heavy metals
Categories
Funding
- National Program on Key Basic Research Project (973 Program) [2015CB453302]
- National Department Public Benefit Research Foundation [201405010]
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The present study aimed to assess the utilization of three seagrasses (Zosteramarina, Z. japonica, andZ. caespitosa) along the eastern coast of the Shandong Peninsula as bioindicators of heavymetal pollution. Heavy metal concentrations (Cd, Cr, Cu, Pb and Zn) were investigated in the sediments and in the aboveground and belowground tissues of seagrasses. The results show that the aboveground tissues of seagrasses accumulated higher levels of Cd and Cu (excluding Z. caespitosa), whereas other metals, such as Cr, Pb and Zn, were mainly restricted to the belowground tissues. Compared to Z. japonica and Z. caespitosa, Z. marina had a higher enrichment capacity for heavy metals. Overall, the seagrasses can reflect the levels of metals in the sediments, especially Z. marina, whose heavy metal tissue levels were significantly and positively correlated with the levels of all metals in the sediments. This study showed that Z. marina could be used as an effective bioindicator for heavy metal pollution of sediments in ecological quality monitoring programs in the future, at least in the temperate waters of China. (C) 2019 Published by Elsevier B.V.
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