Eutrophication

Procedures for assessment of eutrophication status including evaluation of land-based sources of nutrients for the NOWPAP region (the NOWPAP Common Procedure 2015 Revised Edition)[350KB]

To assess the eutrophication status across the entire NOWPAP region, the NOWPAP Common Procedure (2013 Revised Edition) was reviewed and, consequently, one of the required parameters “Nutrients input and their residence time” in Screening procedure (the first diagnosis) was changed to “Long-term Trend of Chemical Oxygen Demand (COD) or Total Organic Carbon (TOC).”

Application of the NOWPAP Common Procedure for Eutrophication Assessment in Selected Sea Areas in the NOWPAP Region [1,361KB]

The eutrophication status was assessed and the validity of the NOWPAP Common Procedure (2013 revision) was evaluated based on the results of the case studies conducted in 2013 in the selected sea areas of the NOWPAP member states using only the screening procedure of the NOWPAP Common Procedure.

Procedures for assessment of eutrophication status including evaluation of land-based sources of nutrients for the NOWPAP region (the NOWPAP Common Procedure 2013 Revised Edition)[659KB]

Based on the results of the case studies conducted in 2013 and opinions of CEARAC experts, the NOWPAP Common Procedure (2009) was revised. The assessment process now consists of two steps: Screening procedure (first diagnosis) using the minimum required parameters; and a Comprehensive procedure (second diagnosis) for detailed assessment.

Case Study Reports on Assessment of Eutrophication Status in selected sea areas:
Jiaozhou Bay, China [888KB] /  North Kyushu Sea Area, Japan [1,393KB] / Toyama Bay, Japan [503KB] / Jinhae Bay, Republic of Korea [726KB] /  Peter the Great Bay, Russia [9,995KB]

Case studies were conducted in the five selected sea areas using the NOWPAP Common Procedure.

Integrated Report on Eutrophication Assessment in Selected Sea Areas in the NOWPAP Region: Evaluation of the NOWPAP Common Procedure[9,924KB]

Using the NOWPAP Common Procedure (2009), the eutrophication status was assessed based on the results of the case studies conducted in the selected areas in each NOWPAP member state in 2011, and the validity of the procedure was evaluated.

Case Study Reports on Assessment of Eutrophication Status in selected sea areas:
Changjiang (Yangtze) River Estuary and its Adjacent Area, China[520KB] / Northwest Kyushu sea area, Japan[2,381KB] / Toyama Bay, Japan[832KB] / Jinhae Bay, Korea[2,577KB] / Peter the Great Bay, Russia[6,115KB]

Each NOWPAP member state selected areas where water quality deterioration and red tides caused by eutrophication had been reported, and conducted case studies using the NOWPAP Common Procedure (2009).

Procedures for assessment of eutrophication status including evaluation of land-based sources of nutrients for the NOWPAP region [404KB]

In order to assess the eutrophication status in the NOWPAP region, CEARAC developed Procedures for assessment of eutrophication status including evaluation of land-based sources of nutrients for the NOWPAP region (NOWPAP Common Procedure).