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Responses of periphyton morphology, structure, and function to extreme nutrient loading
Haiying Lu1, Yanfang Feng2, Jinhua Wang3
1Institute of Agricultural Resources and Environment, Jiangsu Academy of Agriculture Sciences, No. 50, Zhongling Rd, Nanjing 210014, PR China; State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, No.71, East Beijing Rd, Nanjing 210008, PR China; Institute of Agro-Biotechnology, Jiangsu Academy of Agriculture Sciences, No. 50, Zhongling Rd, Nanjing 210014, PR China.
Environmental Pollution (Barking, Essex : 1987)
|May 14, 2016
Summary
High nutrient levels in aquaculture water alter periphyton (microorganisms on surfaces) from spherical to filamentous forms. This shift enhances their ability to use diverse carbon sources and increases bacterial and protozoal presence.
Area of Science:
- Aquatic ecology
- Microbiology
- Aquaculture science
Background:
- Periphyton are utilized in aquaculture systems.
- Limited data exists on periphyton responses to high nutrient conditions.
Purpose of the Study:
- To investigate the effects of high eutrophic waters on periphyton morphology, community structure, and metabolic function.
- To understand the periphyton-nutrient relationship in aquaculture.
Main Methods:
- Evaluation of periphyton morphological characteristics under varying nutrient concentrations.
- Analysis of periphyton community structure (bacterial and protozoal proportions).
- Assessment of periphyton metabolic function, including carbon source utilization.
Main Results:
- Increasing water nutrient concentration altered periphyton micromorphology from spheriform to filamentous.
- Periphyton in higher nutrient waters demonstrated increased utilization of diverse carbon sources.
- Elevated nutrient levels led to a higher proportion of bacteria and protozoa within periphyton communities.
Conclusions:
- This study addresses the knowledge gap regarding periphyton responses to extreme eutrophication in aquaculture.
- Findings provide insights into manipulating periphyton communities by adjusting nutrient levels.
- Understanding the periphyton-nutrient relationship is crucial for optimizing aquaculture system management.
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