Harmful algal blooms and eutrophication: "strategies" for nutrient uptake and growth outside the Redfield comfort zone  

作　　者：Patricia M. GLIBERT JoAnn M. BURKHOLDER 

机构地区：[1]University of Maryland Center for Environmental Science, Horn Point Laboratory, PO Box 775, Cambridge, MD 21613, USA [2]Center for Applied Aquatic Ecology, North Carolina State University, Raleigh, NC 27606, USA

出　　处：《Chinese Journal of Oceanology and Limnology》2011年第4期724-738,共15页中国海洋湖沼学报（英文版）

摘　　要：While many harmful algal blooms have been associated with increasing eutrophication, not all species respond similarly and the increasing challenge, especially for resource managers, is to determine which blooms are related to eutrophication and to understand why particular species proliferate under specific nutrient conditions. The overall goal of this brief review is to describe why nutrient loads are not changing in stoichiometric proportion to the "Redfield ratio", and why this has important consequences for algal growth. Many types of harmful algae appear to be able to thrive, and/or increase their production of toxins, when nutrient loads are not in proportion classically identified as Redfield ratios. Here we also describe some of the physiological mechanisms of different species to take up nutrients and to thrive under conditions of nutrient imbalance.While many harmful algal blooms have been associated with increasing eutrophication, not all species respond similarly and the increasing challenge, especially for resource managers, is to determine which blooms are related to eutrophication and to understand why particular species proliferate under specific nutrient conditions. The overall goal of this brief review is to describe why nutrient loads are not changing in stoichiometric proportion to the ＂Redfield ratio＂, and why this has important consequences for algal growth. Many types of harmful algae appear to be able to thrive, and/or increase their production of toxins, when nutrient loads are not in proportion classically identified as Redfield ratios. Here we also describe some of the physiological mechanisms of different species to take up nutrients and to thrive under conditions of nutrient imbalance.

关 键 词：HABS MIXOTROPHY nitrogen nutrient loading nutrient ratios nutrient stoichiometry organicnutrients PHOSPHORUS 

分 类 号：X52[环境科学与工程—环境工程] S511[农业科学—作物学]