Insights into community-based bioassessment of environmental quality status using microphytobenthos in estuarine intertidal ecosystems

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• 作者：Guoying Du ; Ik kyo Chung ; Henglong Xu
• 刊名：Acta Oceanologica Sinica
• 出版年：2016
• 出版时间：June 2016
• 年：2016
• 卷：35
• 期：6
• 页码：112-120
• 全文大小：492 KB
• 刊物主题：Oceanography; Climatology; Ecology; Engineering Fluid Dynamics; Marine & Freshwater Sciences; Environmental Chemistry;
• 出版者：Springer Berlin Heidelberg
• ISSN：1869-1099
• 卷排序：35

文摘

The feasibility of community-based bioassessment of environmental quality status was studied using microphytobenthos (MPB) in estuarine intertidal ecosystems. The sediment samples of MPB were collected monthly during a 1-year cycle (September 2006–August 2007) at four sampling stations in the Nakdong River Estuary, Korea. Environmental variables, such as salinity, radiation, grain size of sediment, Si(OH)₄ (Si), nitrate (NO₃–), nitrite (NO₂–), ammonium (NH₄+) and phosphates (PO₄3–), were measured synchronously for comparison with biotic parameters. The statistical analyses were carried out for assessment the relationship between biotic and environmental parameters. The results showed that: (1) the MPB community structures were significant differences among four sampling stations; (2) spatial variation in the MPB communities were significantly correlated with environmental variables, especially the nutrient NH4 + in combination with salinity and grain size; (3) three species (Navicula lacustris, Pleurosigma anglulatum and Fragilaria sp. 1) were significantly correlated with nutrients and/or Si; and (4) the species richness and diversity were significantly correlated with the grain size. It is suggested that MPB communities may be used as a potentially robust bioindicator for assessing environmental quality status in estuarine intertidal ecosystems.Keywordsmarine bioassessmentfield communitymicrophytobenthosestuarine intertidal ecosystemNakdong River