Use of ciliates (Protozoa: Ciliophora) as bioindicator to assess sediment quality of two constructed mangrove sewage treatment belts in Southern China |
| |
| Institution: | 1. School of Life Sciences, Zhongshan University, Guangzhou 510275, China;2. Department of Biology and Chemistry, City University of Hong Kong, Hong Kong SAR, China;1. Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao 266003, China;2. Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Science, Guangzhou 510301, China;3. College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, China;4. State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China;5. College of Life Science and Technology, Harbin Normal University, Harbin 150025, China;6. Department of Zoology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia;7. Department of Life Sciences, Natural History Museum, Cromwell Road, London SW7 5BD, UK;8. College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai 201306, China;1. Laboratory of Protozoology, Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao, 266003, China;2. Laboratory of Protozoology, College of Life Science, South China Normal University, Guangzhou, 510631, China;3. Zoology Department, College of Science, King Saud University, PO Box 2455, Riyadh, 11451, Saudi Arabia;1. CIMA, Faculdade de Ciências e Tecnologia, Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal;2. School of Earth, Atmosphere and Environment, Faculty of Science, Monash University, Clayton 3800, Australia;3. Istituto Geoscienze e Georisorse, IGG-CNR, UOS Padova, via G. Gradenigo, 635131 Padova, Italy;4. Centre for Environmental and Marine Geology, Department of Earth Sciences, Dalhousie University, Halifax, Nova Scotia, Canada B3H 4J1;1. Laboratory of Evolutionary Protistology, Instituto de Biociências, Universidade de São Paulo, São Paulo, SP, Brazil;2. Laboratório de Biologia Molecular “Francisco Mauro Salzano”, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, PA, Brazil;3. División Invertebrados, Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”, Buenos Aires, Argentina;4. Biologisches Institut—Abteilung Zoologie, Universität Stuttgart, Stuttgart, Germany;5. Laboratório de Protistologia, Instituto de Biologia, Departamento de Zoologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil;1. College of Marine Life Science, Ocean University of China, Qingdao 266003, China;2. Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao 266003, China;3. Department of Life Sciences, Natural History Museum, London SW7 5BD, UK |
| |
| Abstract: | To complement physical and chemical data, information of biological communities is important to assess the qualities of mangrove sediments receiving wastewater. Ciliate communities have cosmopolitan distribution, short life cycle and high sensitivity to pollutants, which make them useful as biological indicators of the sediment environment. In most literature, ciliates are widely used as bioindicators for the state of water quality. In this study, the physico-chemical parameters and ciliate community structure of surface sediment collected at different sampling points from two constructed mangrove (Aegiceras and Sonneratia) belts for treatment of municipal sewage in southern China were investigated. Results showed that most (> 80%) of the 216 species ciliates identified at the two constructed mangrove belts were either omnivorous or bacterivorous. Sediment redox potential (Eh) was considered an important factor to govern the distribution of ciliate species within the mangrove sediment. The saprobic system originally derived from freshwater ecosystem was used to evaluate the saprobic degrees of these constructed mangrove belts. Saprobic index (SI) values declined from the sewage inlet to the outlet points of the constructed belts, suggesting better sediment quality at the outlet point caused by treatment processes within the mangrove belt system. Sediment quality of the sewage outlet area of the constructed Aegiceras belt was determined as class II-III (SI = 2.48), while that of the Sonneratia belt was as class III (SI = 2.71) according to the saprobic classification, indicating that a better sewage treatment efficiency was apparent in the Aegiceras than Sonneratia belt. The present data suggested that ciliates could serve as a good bioindicator in assessing organically polluted sediment qualities. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
