Dr. Anne E. Giblin

Senior Scientist

The Ecosystems Center, Marine Biological Laboratories

Research Focus:

My major research interest has been on the cycling of elements in the environment, especially the biogeochemistry of nitrogen, sulfur, iron, and phosphorus. Much of my work has been focused in soils and sediments where element cycling takes place under different conditions of oxidation and reduction. A major theme of my research has been to examine how sediment processes either ameliorate or augment the effects of anthropogenic inputs of elements to ecosystems. For example, I have worked on topics such as the effects of acid deposition on the sulfur cycle of lakes, the mobility of trace metals in salt marsh sediments, the controls on the availability of phosphorus in tundra soils (Arctic LTER), and the controls of denitrification in marine and lake sediments. Much of my current research focuses on the nitrogen cycle and has been centered on understanding how ecosystems respond to high nutrient inputs from wastewater and fertilizer. My current projects include an assessment of how sediments in Boston Harbor and Massachusetts Bay have been altered by a major sewage diversion; how increased N inputs and hydrologic disturbances alters nitrogen cycling in estuaries; and how pathways of nitrogen cycling change with increased nitrogen inputs in arctic lakes.

- Coastal Waters Consortium (CWC Consortium, Year 2-4 Consortia Grants (RFP-I), Role: Co-Principal Investigator, Task Co-Lead)