Ecotoxicology

, Volume 21, Issue 6, pp 1706–1716

Evaluation of sampling sizes on the intertidal macroinfauna assessment in a subtropical mudflat of Hong Kong

Authors

  • Ping-Ping Shen
    • Key Laboratory of Marine-Bioresources Sustainable UtilizationSouth China Sea Institute of Oceanology, Chinese Academy of Sciences
    • Laboratory of Environmental Microbiology and Toxicology, School of Biological SciencesThe University of Hong Kong
  • Hong Zhou
    • College of Marine ScienceOcean University of China
  • Zhenye Zhao
    • Shenzhen-Hong Kong Institution of IndustryEducation, Research Environment Engineering Technique Co., Ltd
    • Laboratory of Environmental Microbiology and Toxicology, School of Biological SciencesThe University of Hong Kong
  • Xiao-Zhang Yu
    • The Guangxi Key Laboratory of Environmental Engineering, Protection and AssessmentGuilin University of Technology
    • Laboratory of Environmental Microbiology and Toxicology, School of Biological SciencesThe University of Hong Kong
    • The Swire Institute of Marine ScienceThe University of Hong Kong
Article

DOI: 10.1007/s10646-012-0968-2

Cite this article as:
Shen, P., Zhou, H., Zhao, Z. et al. Ecotoxicology (2012) 21: 1706. doi:10.1007/s10646-012-0968-2

Abstract

In this study, two types of sediment cores with different diameters were used to collect sediment samples from an intertidal mudflat in Hong Kong to investigate the influence of sampling unit on the quantitative assessment of benthic macroinfaunal communities. Both univariate and multivariate analyses were employed to detect differences in sampling efficiencies by the two samplers through total abundance and biomass, species richness and diversity, community structure, relative abundance of major taxa of the infaunal community. The species-area curves were further compared to find out the influence of the sampling units. Results showed that the two sampling devices provided similar information on the estimates of species diversity, density and species composition of the benthos in main part of the mudflat where the sediment was fine and homogenous; but at the station which contained coarse sand and gravels, the significant differences were detected between the quantitative assessments of macrobenthic infauna by the two samplers. Most importantly, the species-area curves indicated that more and smaller samples were better in capturing more species than less large ones when comparing an equal sampling area. Therefore, the efficiency of the sampler largely depended on the sediment properties, and sampling devices must be chosen based on the physical conditions and desired levels of precision on the organisms of the sampling program.

Keywords

Core samplerSampling unitMacrofaunaAssessmentIntertidal mudflat

Copyright information

© Springer Science+Business Media, LLC 2012