Photos of the Long Island Sound

Research & Monitoring

Projects will take place from 2015 to 2017

Biogeochemical Nitrogen Loss vs. Recycling in Long Island Sound: Connecting Sediments to Overlying Water

Investigator: Craig R. Tobias, University of Connecticut Department of Marine Sciences

The researcher will examine biogeochemical processes involving nitrogen loss and recycling in Long Island Sound sediments and the connections to overlying waters. The result will help researchers and managers gauge the susceptibility of the Sound to changes in nitrogen loads and how the system might respond to recent or future decreases in nitrogen.

Quantifying Benthic-Pelagic Coupling in Long Island Sound

Investigator: Robinson “Wally” Fulweiler, Boston University Department of Earth and Environment

The researcher will quantify changes in organic matter as it at falls through the water to the sediment in five locations. She will also examine how the movement of nutrients into and out of the sediment may be changing in response to changes in the magnitude of nutrient inputs. Bacterial processes in the sediments can augment or mask changes in the nutrient concentration of the overlying water by storing or releasing nitrogen from the sediments, and these relationships can vary with changes in temperature, sediment type, and nitrogen concentration.

Recent Temporal Evolution of Nitrogen Loading and Oxygen Dynamics in Long Island Sound Studied Using Stable Isotope Geochemistry

Investigator: Mark A. Altabet, University of Massachusetts at Dartmouth Department of Estuarine and Ocean Science

The researcher will use isotope geochemical techniques to examine the impact of recent changes in nitrogen inputs and oxygen levels due to recent upgrades to wastewater treatment plants. Stable isotopes allow scientists to identify the sources of nitrogen (e.g., sewage, fertilizers, and air emissions) and evaluate the importance of recycling and other bacterial processes to the overall nitrogen budget of Long Island Sound.

 

 

Subscribe to receive our e-newsletter, Sound Bytes by providing your email address. Interested in a free copy of our print newsletter, Sound Update? Then also provide your home/company/school address.