NORLAKE SYMPOSIUM, OCTOBER 19–21 2003, AT “GJERN SØHØJLAND”, SILKEBORG, DENMARK SPEAKER Susanne L. Amsinck Per-Arne Amundsen N.J. Anderson Jordi Catalan Kirsten Christoffersen & Bjørn Faafeng Arni Einarson Glen George Gisli Mar Gislason Maciej Gliwicz Johan Hammar John Hobbie Erik Jeppesen Jan Karlsson Isabelle Larocque Torben Lauridsen and Lars-Anders Hansson Peter Leavitt Hilmar Malmquist John O’Brien Jon S. Olafsson Reinhard Pienitz Milla Rautio Sigurður S. Snorrason Ruben Sommaruga Martin Søndergaard and Jens Peder Jensen Warwick F. Vincent Rolf Vinebrooke POSTERS Haraldur R. Ingvason TITLE Cladoceran remains in the surface sediment of Faroese lakes Ecological interactions following a fish invasion in a subarctic watercourse A presentation on Greenland lake temperature work Organochlorine accumulation in high mountain lakes: another way to look at the food-web structure Abundance and composition of phytoplankton in a large number of arctic and subarctic lakes The Lake Myvatn ecosystem. Variation in time and space Overview of the open water zooplankton in sixty lochs at the Shetland Islands The origin of the aquatic fauna of the North-Atlantic islands. Present distribution in relation to climate and possible migration routes Effects of vertebrate and invertebrate predation in cold lakes: salmonids and cyclopoids in two neighbouring lakes of the Tatra Mountains, Poland Life-history shifts in Arctic char populations - the impact of climatic gradients on intra- and interspecific interactions Arctic freshwaters and climate change: conclusons of the Arctic Climate Impact Assessment Trophic dynamics in the NORLAKE lakes – evidence from contemporary and surface sediment data Carbon and energy flow in Subarctic lake ecosystems Chironomids as indicator of temperature changes through the Holocene in northern Sweden Zooplankton in the NORLAKE lakes – changes along a climate gradient Effects of Summer and Winter Climatic Variability on Lakes of Central North America" Life history traits of Arctic charr and the lake environment: What is going on? Physical, chemical and biotic impacts on arctic zooplankton communities and diversity Typology of icelandic lakes based on zooplankton community structure Global warming in the Arctic: What about northern Québec and Labrador? Water column-benthic coupling in shallow freshwater ecosystems in northern Canada Inter- and intralake variability in morphology of Arctic charr. Synthesis and accumulation of UV-absorbing mycosporine-like amino acids by planktonic organisms: a major strategy to minimize UV-damage in transparent and cold lakes Physico-chemical variables of NORLAKE-lakes – changes along a climate gradient Lake ecosystems at the northern limit of arctic Canada: extreme sensitivity to climate change Ecosystem Resilience in a Changing Climate: Evidence from the Experimental Lakes Area Seasonal changes in the crustacean community and environmental conditions of alkaline lake Elliðavatn, Iceland: Results from a one-year monitoring NORLAKE SYMPOSIUM, OCTOBER 19–21 2003, AT “GJERN SØHØJLAND”, SILKEBORG, DENMARK – PARTICIPANTS LIST PARTICIPANTS Anne Hershey Arni Einarsson Atte Korhola Bjørn Faafeng NORLAKE member Dorete Bloch NORLAKE member Erik Jeppesen NORLAKE member Finnur Ingimarsson NORLAKE member Geir Dahl-Hansen Gísli Mar Gíslason NORLAKE member Glen George Haraldur R. Ingvason Hilmar J. Malmquist NORLAKE member Isabelle Larocque Jan Karlsson Jens Peder Jensen NORLAKE member Johan Hammar John Hobbie John O’Brien Jon Olafsson NORLAKE member Jordi Catalan Kirsten Christoffersen NORLAKE member ADDRESSES Department of Biology, University of North Carolina-Greensboro, P. O. Box 26174, Greensboro, NC 27402-6174, USA anne_hershey@uncg.edu Institute of Biology, University of Iceland, Grensasvegur 12 108 Reykjavik, Iceland E-mail: arnie@rhi.hi.is Environmental Change Research Unit (ECRU), Department of Ecology and Systematics, P.O. Box 65 (Viikinkaari 1), Biocentre 3, FIN-00014 University of Helsinki, Finland E-mail: atte.korhola@helsinki.fi NIVA, Kjelsaas, P O Box 173, 0411 Oslo, Norway E-mail: bjoern.faafeng@niva.no Museum of Natural History, FO-100 Tórshavn, Faroe Islands E-mail: doreteb@sleipnir.fo National Environmental Research Institute, Dept. of Freshwater Ecology, P.O. Box 314, DK-8600 Silkeborg, Denmark E-mail: ej@dmu.dk Natural History Museum of Kópavogur, Hamraborg 6 A, IS-200 Kópavogur, Iceland E-mail: finnur@natkop.is Akvaplan-NIVA, Polar Environmental Centre, N-9296 Tromsø, Norway E-mail: gdh@akvaplan.niva.no Presently at: Department of Ecology, Evolution and Marine Biology UCSB, CA 93106, CA 93106, USA E-mail: gmg@rhi.hi.is Centre for Ecology and Hydrology, Windermere Laboratory, Far Sawrey, Ambleside, Cumbria LA22 0LP, United Kingdom E-mail: dgg@ceh.ac.uk Natural History Museum of Kópavogur, Hamraborg 6 A, IS-200, Kópavogur, Iceland E-mail: haraldur@natkop.is Natural History Museum of Kópavogur, Hamraborg 6 A, IS-200, Kópavogur, Iceland E-mail: hilmar@natkop.is INRS-ETE, Universite du Quebec, 2800 rue Einstein, CP 7500, Ste-Foy, Quebec, Canada, G1V 4C7 E-mail: isabelle_larocque@inrs-ete.uquebec.ca Climate Impacts Research Centre (CIRC), Abisko Scientific Research Station, SE-981 07 Abisko, Sweden E-mail: jan.karlsson@eg.umu.se National Environmental Research Institute, Dept. of Freshwater Ecology, P.O. Box 314, DK-8600 Silkeborg, Denmark E-mail: jpj@dmu.dk Sötvattenslaboratoriet, Stångholmsvägen 2, S-178 93 Drottningholm, Sweden E-mail: johan.hammar@fiskeriverket.se The Ecosystems Center, Marine Biological Laboratory, Woods Hole, MA, 02543, USA E-mail: jhobbie@mbl.edu 17 Eberhart, UNCG, Greensboro NC, 27402 USA E-mail: w_obrien@uncg.edu Institute of Biology, University of Iceland, Grensásvegur 12, IS-108 Reykjavík, Iceland E-mail: jsol@hi.is Universitat de Barcelona, Facultat de Biologia, Avda Diagonal 645 E-08028 Barcelona, Spain E-mail: catalan@bio.ub.es Freshwater Biological Laboratory, University of Copenhagen, Helsingørsgade 51, DK-3400 Hillerød, Denmark E-mail: kchristoffersen@zi.ku.dk PARTICIPANTS Klaus Brodersen Lars-Anders Hansson NORLAKE member Marianne Douglas Martin Kernan Martin Svenning Martin Søndergaard NORLAKE member Milla Rautio N. John Anderson Orlando Sarnelle Presentación Carillo Per Arne Asmundsen Peter Leavitt Reinhard Pienitz Roland Hall Rolf Vinebrooke Ruben Sommaruga Sigurður S. Snorrason NORLAKE member Torben Lauridsen NORLAKE member Vera Straskrabova Warwick F. Vincent Z. Maciej Gliwicz Wilhelm Granéli NORLAKE member ADDRESSES Freshwater Biological Laboratory, University of Copenhagen, Helsingørsgade 51, DK-3400 Hillerød, Denmark E-mail: KPBrodersen@zi.ku.dk Inst. of Ecology/Limnology, Ecology Building - University of Lund, S-223 62 Lund, Sweden E-mail: lars-anders.hansson@limnol.lu.se University of Toronto, Department of Geology, Toronto, Ontario, Canada E-mail: msvd@opal.geology.utoronto.ca Environmental Change Research Centre,Department of Geography, University College London, 26 Bedford Way, London,WC1H 0AP, UK E-mail: m.kernan@geog.ucl.ac.uk Norwegian Institute for Nature Research, Department of Arctic Ecology (NINA-Tromso), Polar Environmental Center, N-9296 Tromso, Norway E-mail: martin.svenning@nina.no National Environmental Research Institute, Dept. of Freshwater Ecology, P.O. Box 314, DK-8600 Silkeborg, Denmark E-mail: ms@dmu.dk Dépt de Biologie, Pavillon Vachon, local 3043, Université Laval, Québec, QC G1K 7P4 , Canada E-mail: milla.rautio@bio.ulaval.ca or milla.rautio@helsinki.fi Environmental History Research Group, Geological Survey of Denmark and Greenland (GEUS), Oester Voldgade 10, DK-1350 Copenhagen K, Denmark E-mail: nja@geus.dk Department of Fisheries and Wildlife, Natural Resources Building, Michigan State University, East Lansing, MI 48824-1222, Canada E-mail: sarnelle@msu.edu Departamento Biologia Animal y Ecologia, Universidad de Granada, E-18071 Granada, Spain E-mail: pcl@goliat.ugr.es Norwegian College of Fishery Science, University of Tromsø, N-9037 Tromsø, Norway E-mail: pera@nfh.uit.no Department of Biology, University of Regina, Regina, Saskatchewan, Canada S4S 0A2 E-mail: peter.leavitt@uregina.ca Paleolimnology-Paleoecology Laboratory, Centre d'études nordiques & Département de Géographie, Université Laval, Québec (Québec), G1K 7P4 Canada E-mail: reinhard.pienitz@cen.ulaval.ca Department of Biology, University of Waterloo, Waterloo, ON, Canada N2L 3G1 E-mail: rihall@sciborg.uwaterloo.ca Department of Biology, University of Regina, Regina, Saskatchewan Canada S4S 0A2 E-mail: rolf.vinebrooke@uregina.ca Institute of Zoology and Limnology, University of Innsbruck Technikerstr. 25, A-6020 Innsbruck, Austria E-mail: ruben.sommaruga@uibk.ac.at Institute of Biology, University of Iceland, Grensásvegur 11, IS-108 Reykjavík, Iceland E-mail: sigsnor@hi.is National Environmental Research Institute, Dept. of Freshwater Ecology, P.O. Box 314, Vejlsøvej 25, DK-8600 Silkeborg, Denmark E-mail: tll@dmu.dk Hydrobiological Institute, ASCr Na sádkách 7, 370 05 Ceske Budejovice, Czech Republic E-mail: verastr@hb.cas.cz Dépt de Biologie, Université Laval, Québec, QC G1K 7P4 Canada E-mail: warwick.vincent@bio.ulaval.ca Department of Hydrobiology, Warsaw University, Banacha 2, 02-097 Warsaw, Poland E-mail: Gliwicz@hydro.biol.uw.edu.pl Institute of Ecology/Limnology, Ecology Building, University of Lund, S-223 62 Lund, Sweden E-mail: wilhelm.graneli@limnol.lu.se