Abstract


MITIGATING A GLOBAL EXPANSION OF CYANOBACTERIAL BLOOMS: THE CONFOUNDING IMPACTS OF CLIMATE CHANGE

Managing and mitigating the global expansion of cyanobacterial harmful blooms (CyanoHABs) is a major challenge facing researchers and water resource managers. A variety of traditional (e.g., nutrient load reduction) and experimental (e.g., artificial mixing and flushing, omnivorous fish removal, algaecide applications) approaches have been used to reduce bloom occurrences. Managers now face the additional effects of climate change on watershed hydrologic and nutrient loading dynamics, lake, reservoir and estuary temperature, mixing regime, internal nutrient dynamics, and other factors. Those changes generally favor CyanoHABs over other phytoplankton and could influence the efficacy of control measures. Virtually all mitigation strategies are influenced by climatic changes (temperature and precipitation), which may require setting new nutrient input reduction targets and establishing nutrient-bloom thresholds for impacted waters. Physical-forcing mitigation techniques, such as flushing and artificial mixing, will need to adjust and compensate for a world facing increasing human population pressure and climate change.

Authors

Paerl, H. W., University of North Carolina at Chapel Hill, Institute of Marine Sciences, USA, hpaerl@email.unc.edu

Hall, N. S., University of North Carolina at Chapel Hill, Institute of Marine Sciences, USA

Havens, K., Univ. of Florida Inst. for Food & Agricultural Sciences, School of Forest Resources & Conservation , USA, khavens@ufl.edu

Otten, T., Oregon State University Department of Microbiology, USA, ottent@onid.orst.edu

Zhu, M., State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology , China, myzhu@niglas.ac.cn

Xu, H., State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology , China, hxu@niglas.ac.cn

Zhu, G., State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology , China, gwzhu@niglas.ac.cn

Qin, B., State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, China, qinb@niglas.ac.cn

Details

Oral presentation

Session #:SS04
Date: 06/06/2016
Time: 10:30
Location: Sweeney Ballroom B

Presentation is given by student: No