Changes to Chlorophyll and Hypoxia as a Result of Reduced Nitrogen Pollution

This two-page science update summarizes a report by Dan Codiga (here) shared in September 2021, and contains further work towards understanding how nitrogen pollution reductions impact Narragansett Bay. This update (and the longer report) stems from previous work (presented here and here) to update the chlorophyll and dissolved oxygen chapters of the 2017 State of Narragansett Bay and Its Watershed.

The purpose of these documents is to inform our audience on nitrogen pollution in Narragansett Bay, and to identify areas for continued work. NBEP hopes that this update stimulates discussion among our partners and nutrient experts.

The audience for this piece is anyone who is interested in nitrogen pollution, and the response to nitrogen pollution reduction, particularly environmental managers, members of land-trust committees, and the interested public.

METHODS
This update is a companion piece to a larger report on the topic. Included in that report are the data sources and methods used.

The views expressed in this report are those of the authors and do not necessarily represent the views or policies of the U.S. Environmental Protection Agency or the NEIWPCC. Any mention of trade names, products, or services does not imply an endorsement by the U.S. Government, the U.S. Environmental Protection Agency, or the NEIWPCC. The EPA and NEIWPCC do not endorse any commercial products, services, or enterprises.