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Scientific Programme

Tuesday May 31, 2005
13.00 – 19.00 Registration: Small aula
19-21 Get-together evening: Small aula

Wednesday June 1, 2005
09.30 Registration
10.00 Welcome
Rector of the University of Latvia Professor Ivars Lacis
Dean of Faculty of Geography and Earth Sciences Professor Maris Klavins
Topic 1: Structural aspects of natural organic matter
Chairperson: Georg Becher
10.30 Keynote lecture:
Natural organic matter (NOM) and wastewater derived organic matter (WdOM) in water treatment – Spectroscopic and chromatographic studies

Gudrun Abbt-Braun, Universität Karlsruhe, T. Doll, U. Lankes and F. H. Frimmel
11.00 Influence of multivalent cations on glass transitions in precipitated dissolved organic matter
J. Frank and G. E. Schaumann
11.20 Glass transitions in humous soil samples
J. Hurraß and G. E. Schaumann
11.40 Radiolabeling of native humic substances with [125I]Iodoaniline
K. Franke, J. Patt, H. Kupsch and P. Warwick
12.00 Lunch
13.00 Quantification of hydroxamate siderophores in soil solutions of podzolic soil profiles in Sweden
S.A. Essén, D. Bylund, S. J. M. Holmström, M. Moberg and U. S. Lundström
13.20 Elemental and structural regularities of the individual molecules in a fulvic acid mixtures as determined by size exclusion chromatography coupled to mass spectrometry
T. Reemtsma and A. These
13.40 Structural identity of LMW fulvic acids of different origin and hints for their formation
A. These and T. Reemtsma
Topic 2: Occurrence and role of natural organic matter in terrestrial systems
Chairperson: Hans Boren
14.00 Keynote lecture:
“The European carbon balance and the possible role of humic substances”

Ernst-Detlef Schulze, Max Planck Institute for Biogeochemistry
14.30 The unexpected role of water in soil organic matter from a macromolecular point of view
G. E. Schaumann
14.50 Variability of organic carbon and nitrogen storage in a small catchment at the forest tundra ecotone, northern Siberia
A. Rodionov, G. Guggenberger, M. Grabe and H. Flessa
15.10 NOM quality and transfer from peat bogs due to environmental changes in the mountains “Erzgebirge” (Germany)
J. Scheithauer and K. Grunewald
15.30 Coffee break
16.00 Ants – an important factor for dissolved organic matter dynamics and microbial activity in decomposing spruce litter?
K. Kalbitz, A. Schramm and B. Stadler
16.20 Sorption of dissolved organic carbon and phosphorous by an agricultural soil
B. Gjettermann, M. Styczen, S. Hansen, O. K. Borggaard and H. C. B. Hansen
16.40 Changes in organic matter content on eroded Lithuanian Albeluvisols and international calibration of analytical protocols
B. Jankauskas, G. Jankauskiene, A. Slepetiene, M. A. Fullen and C. A. Booth
17.00 Sorptive control on dissolved organic matter export from soils in forest tundra ecosystems
M. Kawahigashi, K. Kaiser, A. Rodionov and G. Guggenberger
17.20 Contents and stocks of organic matter in some Russian forest soils: Methodical problems and perspective approaches
E. V. Abakumov and A. I. Popov
  Nordic Chapter meeting
19.00 Riga Centre Trip

Thursday June 2, 2005
Topic 3: Occurrence and role of natural organic matter in aquatic systems
Chairperson: Gunta Springe
9.00 Keynote lecture:
“Dissolved natural organic matter (DNOM), properties and environmental importance”

Prof. Egil Gjessing, University of Oslo
9.30 Changes in properties of dissolved organic carbon (DOC) due to climate change? A precipitation manipulation study.
S. Haaland, K. Austnes, G. Riise and D. Hongve
9.50 Effects of climate change on the mobilization of dissolved organic nitrogen (DON) – a field experiment
K. Austnes, S. Haaland and ¨. Kaste
10.10 Photolytic and photocatalytic transformation of aquatic NOM
F. H. Frimmel, T. E. Doll and T. Brinkmann
10.30 Coffee break
11.00 Biological features of bog lakes with different amount of humic substances
I. Druvietis, A. Briede, L. Eglite, E. Parele and G. Springe
11.20 Quantification of NOM fluxes in forested drinking water catchments in the low mountain range “Erzgebirge” Germany
D. Pavlik, C. Fiebiger and K. Grunewald
11.40 Occurrence and removal of natural organic matter (NOM) in drinking water treatment
T. Tuhkanen and A. Matilainen
12.00 Natural Organic Matter (NOM) Functionality and disinfection by-product formation
E. H. Goslan and S. A. Parsons
12.20 Changes in NOM characteristics through watercourses from headwaters to high order streams
R. D. Vogt and E. Gjessing
12.40 Lunch
13.50 Poster session Topics 1 – 4
15.00 Trip to a Ethnographic Open Air Museum and conference dinner

Friday June 3, 2005
Topic 4: Interaction of natural organic matter with nutrients and xenobiotics
Chairperson: Jarkko Akkanen
9.00 Keynote lecture:
Interactions of natural organic material with pollutants

Prof. Jussi Kukkonen, University of Joensuu
9.30 Potential antiallelopathic activity of humic substances on caffeic, ferulic and salicylic acids during early growth of lettuce and tomato
N. Senesi, E. Loffredo and L. Monaci
9.50 Studying the effects of “dissolved” natural organic matter from freshwater sediments on speciation of organic contaminants: It was supposed to be easy
J. Akkanen, A. Tuikka, M. Lyytikäinen and J. V. K. Kukkonen
10.10 Behaviour of plutonium in aqueous systems containing humic substances
N. L. Banik, S. Bürger, R. A. Buda, J. V. Kratz, B. Kuczewski and N. Trautmann
10.30 Coffee break
11.00 The role of decaying organic matter in Cu sorption by Phragmites Australis a kinetic study
V. R. Unamuno, A. De Visscher, E. Lesage, E. Meers1, F. Tack1
11.20 Stabilisation of dissolved organic matter by formation of DOM-Al-precipitates
T. Scheel, C. Dörfler, K. Kalbitz
11.40 Modelling Hg interactions with natural organic matter using WHAM
E.Tipping
12.00 Effects of gyttja on soil chemical and biological properties and availability of heavy metal in soil
A. Karaca, O. C. Turgay, N. Tamer
12.20 Lunch
13.30 Organic and minerogenic acidity in Finnish rivers in relation to land use cover
T. Mattsson, P.Kortelainen, A. Lepistö, A. Räike
13.50 Evaluation and compensation of ion-exclusion effects during gel-permeation fractionation of humic substances
E.Yu. Belyaeva, I.V. Perminova and A.V. Kudryavtsev
14.10 Polymerization of phenolic compounds on the surface of hydroxyaluminum-kaolinite complex, catalyzed by immobilized fungal laccase
A.G. Zavarzina
14.30 Humic substances in drinking water reservoir systems of the Ore Mountains (Saxony): distribution in the reservoirs, and influence on treated water quality
C. Fiebiger, W. Schmidt
14.50 The influence of size distribution on colour properties of DOM in low ionic forest lakes E-Norway
G. Riise, S. Haaland, D. Hongve, I. Digernes
15.10 Application of high-voltage plasma technology for processing of organic matters
S. Cifanskis
15.30 Poster session Topics 1-4
17.00 Closing of the conference

Oral presentations will last 15 minutes plus 5 minutes scheduled for discussions. Video projector with connected PC (MS Power Point 2000), slide and overhead projectors will be provided.

Posters will be on display in the Poster Area starting from 01. 06 (situated in the 2nd floor room No. 5) throughout the Conference. Poster size should not exceed A0 (70 x100 cm) in portrait format. Pins for fastening the posters will be available in the Poster Area.