International Waters learning Exchange & Resource Network

Filling Gaps in LME Nitrogen Loadings Forecast for 64 LMEs (2008)

Participants from 7 LMEs attended two workshops (23-25 January 2006 and 18-20 September 2006), held at UNESCO-IOC in order to receive training on the use of GIS-based models relating land use and human activities in watersheds to nutrient transport by rivers to coastal systems. Moreover, participants conducted further analyses using the software and model interface given to them during the workshop, developed science-based summary documents for their home region, provided their LME director with the model findings, as well as gave presentations to their regional government officials and at scientific meetings. This project specifically used an innovative Nutrient Export from Watersheds Model (NEWS NExport model) to predict dissolved inorganic nitrogen (DIN) export by rivers to the coast as a function of watershed N inputs (point and diffuse sources), hydrology, and other factors. Developed by Dumont et al., [2005], NEWS-DIN has been extended to allow its application to LMEs. The model was used to examine DIN export into seven LMEs: Baltic Sea, Bay of Bengal, Benguela Current, Guinea Current, Gulf of Mexico, Humboldt Current and Yellow Sea and also from a global perspective. This Technical Report outlines the results of these two workshops, and gives a comprehensive summary of the Large Marine Ecosystem Approach developed by Kenneth Sherman.

28 Aug 2018

4.8 MB


Filling Gaps in LME Nitrogen Loadings Forecast for 64 LMEs (2008).pdf