National Evaluation Report on the Joint Assessment and Monitoring Programme of the Netherlands 2002

National Evaluation Report on the Joint Assessment and Monitoring Programme of the Netherlands 2002

Bovelander, R.W.
Langenberg, V.T.

Rijkswaterstaat

JAMP

2004-01-01

The Netherlands participates in the Joint Assessment and Monitoring Programme (JAMP) of the Oslo and Paris Commissions. In this framework it was agreed that all members or contracting parties should report on the national comments that accompany the data submissions to ICES database. This report presents the results and comments of the Dutch contribution to the JAMP programme 2002. Wintertime concentrations for Dissolved Inorganic Nitrogen and Ortho-phosphate were in agreement with earlier reported downward trends. Though both nutrients still exceed MTRs (Maximum Tolerable Risk concentrations), the downward trend seems more progressive for Ortho-phosphate than for DIN. Of all measured metal concentrations in water only copper was occasionally exceeding MTR levels and of all measured metal concentrations in sediment only As, Hg, Cd and Zn was occasionally exceeding the VR (target value). Most organic contaminants showed no major changes since 2001. TBT concentrations in water are in agreement with earlier reported decreasing trends. Nevertheless, TBT concentrations in sediment still exceed MTR. A long-term assessment of fish diseases in Flounder presented here showed, when excluding the 2002 data, a general improvement of flounder individuals in the Wadden Sea, Eastern Scheldt and coastal zone since the early nineties. The quality assurance programme of the Dutch laboratories and details on detection limits and participation in QUASIMEME exercises are given.

JAMP
2002
water pollution
water quality
TBT
fish disease

LBR00

http://resolver.tudelft.nl/uuid:a34e09e5-5629-404c-9b8b-e0f6b196466c

Rijkswaterstaat, RIKZ

Rapportnr.: 2004.006

Hydraulic Engineering Reports

report

(c) Rijkswaterstaat