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The Haber-Bosch-harmful algal bloom (HB-HAB) link. Glibert, P.M. et al. 2014. Environmental Research Letters.
Evolving paradigms and challenges in estuarine and coastal eutrophication dynamics in a culturally and climactically stressed world. Paerl, H.W. et al. 2014. Estuaries and Coasts.
Global analysis of nitrogen and phosphorus limitation of primary producers in freshwater, marine and terrestrial ecosystems. Elser, J.J. et al. 2007. Ecology Letters.
Land use patterns, ecoregion, and microcystin relationships in U.S. lakes and reservoirs: a preliminary evaluation. Beaver, J.R. et al. 2014. Harmful Algae.
Updated EPA fact sheet - Preventing Eutrophication: Scientific Support for Dual Nutrient Criteria (February 2015). Click here.
2015 National Numeric Nutrient Criteria Webinar Series presentations are available. Click here.
Recent EPA contributions to peer-reviewed literature on nutrient-related topics. Click here.
Find out more about harmful algal blooms. Click here.
Searchable bibliography of nutrient sources from 1951 to 2014.
Presentations from the 2014 Regional Numeric Nutrient Criteria Technical Workshops are available. Click here.
Click on the map below to select an EPA region or select your state or territory from the dropdown menu.
A toolbox for practitioners tasked with the goal of developing numeric nutrient criteria. The toolbox will continue to expand as technical advances are made by EPA and its state partners in developing numeric nutrient criteria.
Updates about nutrient issues near you! Includes upcoming nutrient events, nutrient news articles, and other information about nutrients.
Repository for a variety of support materials, such as: webcasts and presentations by national nutrient experts, handy links, Federal nutrient documents, and a searchable bibliography of nutrient criteria topics!
Contacts and links organized by EPA region and states accessed via an interactive map.
Forum for posting and reading responses on technical questions relating to nutrients and nutrient criteria. Use the Technical REQuest System (T-REQS) to log in and post new comments to the expert panel.
Useful terms and acronyms defined for the nutrient criteria community.