Format

Send to

Choose Destination
Mar Pollut Bull. 2015 Sep 15;98(1-2):78-94. doi: 10.1016/j.marpolbul.2015.07.010. Epub 2015 Jul 9.

Assessment of the impacts of trace metals on benthic foraminifera in surface sediments from the northwestern Taiwan Strait.

Author information

1
Guangzhou Marine Geological Survey, Guangzhou 510760, People's Republic of China. Electronic address: lukelitao80@163.com.
2
Guangzhou Marine Geological Survey, Guangzhou 510760, People's Republic of China; Key Laboratory of Marine Mineral Resources, Ministry of Land and Resources, Guangzhou 510760, People's Republic of China.
3
Guangzhou Marine Geological Survey, Guangzhou 510760, People's Republic of China.

Abstract

The distribution patterns of foraminiferal assemblages in relation to trace metals, sediment grain size, and calcium carbonate were studied in 232 surface sediments collected from the northwestern Taiwan Strait. Multivariate analyses of biotic and abiotic data revealed a separation of near-shore, coastal, and deep-water zones. The modified degree of contamination suggested that the overall contamination was very low to low. Trace metals were enriched in the near-shore and outside bays. Their distribution was likely determined by sediment transport pathways and hydrodynamic conditions. High metal concentrations co-occurred with a low density and diversity of foraminiferal assemblages. Pb, Ba, organic carbon, Ga, Zn, Cu, and Co had a positive correlation with near-shore assemblage, whereas Cr and Ni positively related to the deep-water assemblages. Some calcareous foraminifera were favored by CaCO3, Sr, and sand. This study highlights species' responses that are specific to environmental variables.

KEYWORDS:

Benthic foraminifera; Multivariate statistical analysis; Self-organizing map; Taiwan Strait; Trace metals

PMID:
26164781
DOI:
10.1016/j.marpolbul.2015.07.010
[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for Elsevier Science
Loading ...
Support Center