Body-size spectra of biofilm-dwelling protozoa and their seasonal shift in coastal ecosystems |
| |
| Institution: | 1. College of Marine Life Science, Ocean University of China, Qingdao 266003, China;2. College of Fisheries, Ocean University of China, Qingdao 266003, China;1. The Key Laboratory of Biomedical Information Engineering, Ministry of Education, School of Life Science and Technology, Xi’an Jiaotong University, Xi’an 710049, China;2. Key Laboratory for Space Bioscience and Biotechnology, Institute of Special Environmental Biophysics, School of Life Sciences, Northwestern Polytechnical University, Youyi Xilu 127, 710072, Xi’an, Shaanxi, China;3. Key Laboratory of Aquatic Biodiversity and Conservation of Chinese Academy of Sciences, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China;1. School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China;2. Global Centre for Environmental Remediation (GCER), Faculty of Science and Information Technology, University of Newcastle, Newcastle 2308, Australia;3. Cooperative Research Centre for Contamination Assessment and Remediation of Environment (CRC CARE), PO Box 486, Salisbury South, SA 5106, Australia;1. Department of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, China Agricultural University, Beijing 100193, People’s Republic of China;2. Laboratory of Quality & Safety Risk Assessment for Animal Products on Chemical Hazards (Beijing), Ministry of Agriculture, Beijing 100193, People’s Republic of China;3. Key Laboratory of Detection for Veterinary Drug Residue and Illegal Additive, Ministry of Agriculture, Beijing 100193, People’s Republic of China;4. Beijing Orbiepharm Co. Ltd., Beijing 100185, People’s Republic of China;1. College of Marine Life, Ocean University of China, Qingdao 266003, PR China;2. Division of Polar Ocean Environment, Korea Polar Research Institute, 213-3 Songdo-dong, Yeonsu-gu, Incheon 406-840, Republic of Korea;2. SINOPEC Research Institute of Petroleum Engineering, 100101 Beijing, China |
| |
| Abstract: | Community-based assessment of protozoa is usually performed at a taxon-dependent resolution. As an inherent ‘taxon-free’ trait, however, body-size spectrum has proved to be a highly informative indicator to summarize the functional structure of a community in both community research and monitoring programs in aquatic ecosystems. To demonstrate the relationships between the taxon-free resolution of protozoan communities and water conditions, the body-size spectra of biofilm-dwelling protozoa and their seasonal shift and environmental drivers were explored based on an annual dataset collected monthly from coastal waters of the Yellow Sea, northern China. Body sizes were calculated in equivalent spherical diameter (ESD). Among a total of 8 body-size ranks, S2 (19–27 μm), S3 (28–36 μm), S4 (37–50 μm) and S5 (53–71 μm) were the top four levels in frequency of occurrence, while rank S1 (13–17 μm), S2 and S4 were the dominant levels in abundance. These dominants showed a clear seasonal succession: S2/S4 (spring) → S2/S4 (summer) → S4 (autumn) → S2 (winter) in frequency of occurrence; S1 (spring) → S4 (summer) → S2 (autumn) → S1 (winter) in abundance. Bootstrapped average analysis showed a clear seasonal shift in body-size spectra of the protozoa during a 1-year cycle, and the best-matching analysis demonstrated that the temporal variations in frequency of occurrence and abundance were significantly correlated with water temperature, pH, dissolved oxygen (DO), alone or in combination with chemical oxygen demand (COD) and nutrients. Thus, the body-size spectra of biofilm-dwelling protozoa were seasonally shaped and might be used as a time and cost efficient bioindicator of water quality in marine ecosystems. |
| |
| Keywords: | Bioassessment Biofilm-dwelling protozoa Body-size spectrum Marine ecosystems Seasonal succession |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
