Climate Change and the European Water Dimension - Agri ...

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Figure VI.F.1. Elbe and Mulde catchment affected by the flood in 2002 VI.F.2 Release of Chemicals during the 2002 event The survey revealed no significant increases in levels of chemical pollution in river and floodplain sediments after the flood with few exceptions on a local scale, mainly along River Mulde. Concentrations of trace metals, hydrocarbons, PAHs, organochloro-pesticides, and PCBs exceeded German guidelines only in a few isolated cases, without distinct threats to human health. Polychlorinated Dioxins and Furans (PCDD/Fs) and Mercury contamination in soils behind dikes that broke in 2002 were, on average, typical of urban contamination levels indicating minor re-mobilization through the floodwaters. The investigated playgrounds and agricultural areas showed contamination levels far below German guidelines. Only a few pasture areas slightly exceeded the recommended maximum level of PCDD/F contamination for this type of land use. Contrary observations were made in the floodplain soils regularly affected by floodwaters, where Mercury and particularly PCDD/Fs levels significantly exceeded German guidelines especially downstream of the inlets of Rivers Mulde and Saale. 204
Areas behind the dikes broken in 2002 Figure VI.F.2 Overview on the I-TEQ from PCDD/Fs for flooded soils in relation to land use and the related German guideline values. The elevated concentrations in the floodplains represent a memory of historic floods and cannot be attributed to the flooding in 2002. Metallurgic processing in the past released significant quantities of PCDD/Fs into the Mulde and Saale catchment. The PCDD/F congener pattern Elbe downstream the inlet of the two tributaries changes significantly and shows a high similarity with the pattern found in the vicinity of the old industrial installations there. A similar pattern can be observed in the harbour sediments of Hamburg as well. Concern has risen due to the fact that slag heaps from former Uranium mining in the Mulde catchment were affected by erosion due to the high intensity of precipitation. However, the post-flood concentrations of 238 U and 226 Ra in the sediments of Freiberger Mulde were in the range of the typical geogenic background of this region. The sediments of the Zwickauer Mulde, historically contaminated at a higher level, showed a significant decrease when compared to past campaigns. Except for local problems around the Lenkteich and the Plohnbach, where erosion of contaminated sediments has lead to a local-scale mobilisation of radionuclides, no flood related contamination was observed. Release of pathogens during the 2002 event The threat arising from potential contact with pathogenic microorganisms present in the muddy residues from the floodwaters in urban areas, especially in buildings and playgrounds, was another aspect of the project. Among the species identified through the cultivation on selective media, were Enterococcus, Enterobacter, Wollbachia, Neisseria, Rickettsia, Legianella, Citrocacter and E.Coli. Although the colony counts as such were not alarming, a remarkable resistance against antibiotics was observed. The isolated pathogens from 205 Floodplain
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Climate Change and the European Wat
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European Commission- Joint Research
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At the 2003 Rome Informal Meeting o
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Changes in the diurnal variation of
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Fugure I.2. (a) Maximum grid covera
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century. This corresponds to a sea
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Other causes Other causes of climat
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tropospheric ozone are photochemica
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Figure. I.4. Radiative forcings and
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There are two indirect effects of a
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The projected warming is not unifor
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water towards the west Pacific caus
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Aerosols and climate change in the
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precipitation intensities have been
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Chapter III. The Hydrologic Cycle I
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Figure III.2. Long-term average ann
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Figure III.4. Projected change in s
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eduction in the rate of evaporation
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characteristics may or may not be u
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temperatures potentially lead to hi
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Chapter IV.A. Proxy indicators of C
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Mean Air Temperature (Dec.-March) [
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correlation coefficient -0.4 -0.3 -
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Chapter IV. B. The Impact of Climat
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numbers refer to water bodies bigge
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Table IV.B.2. Number of large dams*
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quality degradation and meet the in
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sufficient resolution and accuracy
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Windermere in the English Lake Dist
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their vertical structure. In partic
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have recently described a method th
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The available evidence suggests tha
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1979). In contrast, heavy rain incr
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The projected increase in the atmos
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Aulacoseira spp. favour the changed
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vertical bars are a simple measure
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values, with an upper limit of 30°
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the processes controlling, regional
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Sea level rise is partially due to
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Box # 1: The North Sea The North Se
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and organic material more rapidly t
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suggesting that climate rather than
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CO2 2- ). In turn, the alkalinity i
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looms are often associated with tox
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events of dense water through the D
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(1) Are we already observing a resp
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eastern and western side of the Nor
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system, their physiology and intern
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each coastal element be studied and
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IV.D.1. Introduction Coastal lagoon
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In the last decade, a general model
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topics in coastal lagoons (de Wit e
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Po River Delta lagoons, the long dr
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esilient to environmental changes a
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Chapter V.A. Climate Change and Ext
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It is realized that adaptation to c
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member states. Moreover some agenci
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Large, global scale climatic driver
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V.B.5. Climate change and droughts
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Evacuation from forest fires at Mas
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In European forest policy, water is
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Drought mitigation and the involvem
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DSS-DROUGHT A Decision Support Syst
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Chapter V .C. Climate Change, Ecolo
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The quality class boundaries within
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An example of this kind of relation
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Regions 1 to 5 represent mainly a m
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een observed in southwestern countr
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Table V.D.2: Percentage area affect
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Page 221 and 222: 31. Rodionov, S.N. 1994. Global and
Page 223 and 224: 28. Dokulil, M.T., 2003. Algae as e
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Page 229 and 230: 136. Straile, D. & Adrian, R. 2000.
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Page 233 and 234: 60. McCleery, R. H. and Perrins, C.
Page 235 and 236: 105. UNESCO 2003. The integrated st
Page 237 and 238: ecosystems and the landscape and de
Page 239 and 240: 2. Carter, T.R., Saarikko, R.A., an
Page 241 and 242: 24. Hydrographisches Zentralbüro 1
Page 243 and 244: European Coastal Lagoons: The Influ
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