Oxygen consuming substances in rivers

Peter Kristensen — Mon, 23 Feb 2015 10:13:09 GMT

Concentrations of biochemical oxygen demand (BOD) and total ammonium have decreased in European rivers in the period 1992 to 2012 (Fig. 1), mainly due to general improvement in waste water treatment.

Sen, Pranab Kumar (1968).

Sarka Lacinova — Tue, 17 Sep 2013 21:25:26 GMT

"Estimates of the regression coefficient based on Kendall's tau", Journal of the American Statistical Association 63: 1379–1389

Is organic matter and ammonium pollution of rivers decreasing?

alec — Mon, 05 Jul 2010 15:41:18 GMT

Hipel, K.W. and McLeod, A.I., (2005).

alec — Mon, 05 Jul 2010 15:51:04 GMT

Time Series Modelling of Water Resources and Environmental Systems. Electronic reprint of our book orginally published in 1994.

Mann, H.B. (1945).

alec — Mon, 05 Jul 2010 15:51:04 GMT

Nonparametric tests against trend, Econometrica, 13, 245-259.

BOD/DO in inland waters, in marine waters S/M

alec — Mon, 05 Jul 2010 16:15:02 GMT

OECD Core Environmental Indicators (CEI)

Biochemical oxygen demand (BOD) in water bodies

alec — Mon, 05 Jul 2010 16:15:04 GMT

UNCSD 1996, methodology sheet

Biochemical oxygen demand (BOD) in water bodies

alec — Mon, 05 Jul 2010 16:15:05 GMT

UNCSD 2001, methodology sheets

McLeod, A.I. (2005).

Sarka Lacinova — Tue, 18 Sep 2012 17:17:30 GMT

Kendall: Kendall rank correlation and Mann-Kendall trend test. R package version 2.0.

Theil, H. (1950).

Sarka Lacinova — Tue, 17 Sep 2013 21:27:20 GMT

"A rank-invariant method of linear and polynomial regression analysis. I, II, III", Nederl. Akad. Wetensch., Proc. 53: 386–392, 521–525, 1397–1412

R Core Team (2013).

Sarka Lacinova — Tue, 18 Sep 2012 17:19:13 GMT

R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria.

Work due 01 Jan 2014

alec — Mon, 05 Jul 2010 16:28:18 GMT

This indicator could be improved as more countries implement the EIONET-water data flow on the basis of the monitoring networks to be established under the WFD. There are gaps in river characteristic information from some countries. This does not enable the stratification of all stations by river size, and thus limits to some extent the current dataset for size-stratification. Also many countries did not report all the requested summary statistics such as the median. A bigger gap in the information is in terms of catchment pressures. Some countries have used Corine land cover data to provide proxy indicators of pressures. It is expected that this aspect will improve significantly during the next year as new updated Corine data will be available, and as work is undertaken by the ETC/WTR and ETC/TE to fill in the gaps in the pressure indicators. More times series data would improve the dataset particular from Southern countries.