Factors influencing prymnesium parvum population dynamics during bloom initiation: Results from in-lake mesocosm experiments

摘要: Roelke, Daniel L., Leslie Schwierzke, Bryan W. Brooks, James P. Grover, Reagan M. Errera, Theodore Valenti, Jr., and L. Pinckney, 2010. Factors Influencing Prymnesium parvum Population Dynamics During Bloom Initiation: Results from In-Lake Mesocosm Experiments. Journal of the American Water Resources Association (JAWRA) 46(1):76-91. DOI: 10.1111/j.1752-1688.2009.00392.x Abstract:  The alga forms large fish-killing blooms in many Texas lakes. In some these lakes, however, occurs but does not develop blooms. this study, we investigated factors that may influence bloom initiation by conducting a series in-lake experiments involving mixing waters Lake Whitney, which has history blooms, with Waco where no have occurred. all experiments, addition resulted poorer performance parvum. Various experimental treatments field data show differences grazing, pathogens, nutrients, salts between two lakes were likely contributed to observation. Industrial agricultural contaminants, allelochemicals algicidal chemicals measured as part research. However, anthropogenic contaminants other than nutrients observed at levels exceeding water quality standards recent years. On hand, nuisance cyanobacteria are common Waco, Microcystis sp. Anabaena abundant during our both taxa known produce allelopathic properties. addition, emergent algal-heterotrophic bacteria interactions suggests produced heterotrophic should be overlooked. Further research focusing on chemical parvum, well potential role bacteria, is necessary, it important management