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Title: Ostracods as pollution indicators in Lap An Lagoon, central Vietnam
Authors: Tan, C. W. J.
Gouramanis, C.
Pham, T. D.
Hoang, D. Q.
Switzer, A. D.
Keywords: Bioindicators
Heavy metals
Organic matter
Issue Date: 1-Jun-2021
Publisher: Elsevier Ltd
Citation: Tan, C. W. J., Gouramanis, C., Pham, T. D., Hoang, D. Q., Switzer, A. D. (2021-06-01). Ostracods as pollution indicators in Lap An Lagoon, central Vietnam. Environmental Pollution 278 : 116762. ScholarBank@NUS Repository.
Rights: Attribution 4.0 International
Abstract: Southeast Asia is particularly susceptible to the negative impacts of increasing coastal pollution as coastal populations and cities grow at unprecedented rates. Although water chemistry can be monitored, there are greater advantages in using bioindicators as reflectors of the combined effect of multiple pollution types on coastal ecosystem health and for early detection of the negative impacts of pollutants on biotic systems. This study explores the utility and application of ostracods as pollution bioindicators and examines the response of ostracod assemblages to variable pollution in Lap An Lagoon, central Vietnam. From 14 sites within the lagoon, 79 species of 46 genera were identified and sediment grain size, total organic carbon, organic matter and heavy metal concentration were measured. Cluster analysis, detrended correspondence analysis and canonical correspondence analysis identified four distinct ostracod biofacies that were highly correlated to the physical environmental variables (salinity, depth, sediment type, heavy metal concentrations, total organic carbon and organic matter) and are shown to be the main factors controlling ostracod biofacies. Low ostracod diversities were found in silty sediments with heavy metal concentrations likely toxic. Sinocytheridea impressa was indicative of a marginally polluted environment within the lagoon. This study provides evidence for the potential for Southeast Asian ostracods to be used in water quality assessments and the data collected can be used as a baseline for future pollution monitoring. © 2021 The AuthorsModern ostracods from Lap An Lagoon, central Vietnam, are excellent bioindicators of environmental pollution with applications throughout Asia. © 2021 The Authors
Source Title: Environmental Pollution
ISSN: 0269-7491
DOI: 10.1016/j.envpol.2021.116762
Rights: Attribution 4.0 International
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