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  • 1.
    Abecasis, David
    et al.
    University of the Algarve, Portugal.
    Steckenreuter, Andre
    University of the Azores, Portugal.
    Reubens, Jan
    Flanders Marine Institute, Belgium.
    Aaestrup, Kim
    DTU, Denmark.
    Alos, Josep
    Instituto Mediterráneo de Estudios Avanzados (CSIC-UIB), Spain.
    Badalamenti, Fabio
    CNR-IAMC, Italy.
    Bajona, Lenore
    Dalhousie University, Canada.
    Boylan, Patrick
    Loughs Agency, UK.
    Deneudt, Klaas
    Flanders Marine Institute, Belgium.
    Greenberg, Larry
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Environmental and Life Sciences (from 2013).
    Brevé, Niels
    Sportfisserij Nederland, The Netherlands.
    Hernandez, Francisco
    Flanders Marine Institute, Belgium.
    Humphries, Nick
    The Marine Biological Association of the U.K, UK.
    Meyer, Carl
    University of Hawai’i at Mānoa, USA.
    Sims, David
    University of Southampton, UK.
    Thorstad, Eva B.
    Norwegian Institute for Nature Research (NINA), Norway.
    Walker, Alan M.
    Centre for Environment, Fisheries and Aquaculture Science (Cefas), UK.
    Whoriskey, Fred
    Dalhousie University, Canada.
    Alfonso, Pedro
    University of the Azores, Portugal.
    A review of acoustic telemetry in Europe and the need for a regional aquatic telemetry network2018In: Animal Biotelemetry, ISSN 2050-3385, E-ISSN 2050-3385, Vol. 6, p. 1-7, article id 12Article in journal (Refereed)
    Abstract [en]

    Background: Globally, there are a large and growing number of researchers using biotelemetry as a tool to studyaquatic animals. In Europe, this community lacks a formal network structure. The aim of this study is to review the useof acoustic telemetry in Europe and document the contribution of cross-boundary studies and inter-research groupcollaborations. Based on this, we explore the potential benefits and challenges of a network approach to identifyfuture priorities and best practices for aquatic biotelemetry research in Europe.

    Results: Over the past decade, there was an approximately sevenfold increase in the number of acoustic telemetrystudies published on marine and diadromous species in Europe compared to a sixfold increase globally. Over 90%of these studies were conducted on fishes and undertaken in coastal areas, estuaries, or rivers. 75% of these studieswere conducted by researchers based in one of five nations (Norway, UK, France, Portugal, and Spain) and, eventhough 34% were based on collaborations between scientists from several countries, there was only one study withan acoustic receiver array that extended beyond the borders of a single country. In recent years, acoustic telemetryin European waters has evolved from studying behavioural aspects of animals (82.2%), into more holistic approachesaddressing management-related issues (10%), tagging methods and effects (5%), and technology and data analysisdevelopment (2.8%).

    Conclusions: Despite the increasing number of publications and species tracked, there is a prominent lack ofplanned and structured acoustic telemetry collaborations in Europe. A formal pan-European network structure wouldpromote the development of (1) a research platform that could benefit the acoustic telemetry community throughcapacity building, (2) a centralized database, and (3) key deployment sites and studies on priority species requiringresearch in Europe. A network may increase efficiency, expand the scope of research that can be undertaken, promoteEuropean science integration, enhance the opportunities and success of acquiring research funding and, ultimately,foster regional and transatlantic collaborations. It may also help address research priorities such as the large-scalesocietal challenges arising from climate change impacts and assist the EU’s Marine Strategy Framework Directive viaidentification of good environmental status of endangered or commercially important species.

  • 2.
    Andersson, Anders
    et al.
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Environmental and Life Sciences (from 2013).
    Bergman, Eva
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Environmental and Life Sciences (from 2013).
    Greenberg, Larry
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Piccolo, John
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Environmental and Life Sciences (from 2013).
    Comparing mail-in, interview and tournament catch rates for a recreational salmonid fisheryManuscript (preprint) (Other academic)
  • 3.
    Andersson, Anders
    et al.
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Environmental and Life Sciences (from 2013).
    Greenberg, Larry
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Environmental and Life Sciences (from 2013).
    Bergman, Eva
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Environmental and Life Sciences (from 2013).
    Su, Zhenming
    Andersson, Magnus
    Piccolo, John
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Environmental and Life Sciences (from 2013).
    Estimating effort and catch of a recreational trolling fishery in one of Europe’s largest lakesManuscript (preprint) (Other academic)
  • 4. Berglund, O.
    et al.
    Larsson, P.
    Brönmark, C.
    Greenberg, Larry
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Eklöv, A.
    Okla, L.
    Factors influencing organochlorine uptake in age-0 brown trout (Salmo trutta) in lotic environments1997In: Can. J. Fish. Aquat. Sci. 54: 2767-2774Article in journal (Refereed)
  • 5.
    Bergman, Eva
    et al.
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Calles, Olle
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Greenberg, Larry
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Lans, L
    Norrgård, Johnny
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Olsson, I
    Piccolo, John J
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Schmitz, M
    Vandrande fisk i Klarälven2008Conference paper (Refereed)
  • 6.
    Bergman, Eva
    et al.
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Greenberg, Larry
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Competition between a planktivore, a benthivore, and a species with ontogenetic niche shifts1994In: Ecology 75:1233-1245Article in journal (Refereed)
  • 7.
    Bergman, Eva
    et al.
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Greenberg, Larry
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Gustafsson, Pär
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Gosselin, Marie-Pierre
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Forest-stream linkages: Effects of woody debris on brown trout (Salmo trutta)2009Conference paper (Refereed)
  • 8.
    Bergman, Eva
    et al.
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Environmental and Life Sciences.
    Greenberg, Larry
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Environmental and Life Sciences.
    Norrgård, Johnny
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Environmental and Life Sciences.
    Piccolo, John
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Environmental and Life Sciences.
    Schmitz, Monika
    Evolutionsbiologiskt centrum, Uppsala universitet.
    Lax och öring i Klarälven - möjligheter för vild fisk och kvalité på odlad fisk: Slutrapport 2008-20122013Report (Other academic)
    Abstract [sv]

    Data från 1800-talet visar att fångsterna av lax och öring i både älv och sjö varit mycket högre än idag. Storskaliga dämmen, kraftigt fiske i Dejeforsen, nio kraftverk i den svenska delen av Klarälvens huvudfåra, och användandet av älven för timmerflottning har bidragit till detta. Efter att utsättning av kompensationsodlad fisk startade ökade fångsten igen, även om den fortfarande är låg.

    Fältundersökningar av vild laxsmolt visade att 16 % av smolten klarade sig hela vägen förbi de åtta kraftverken mellan Edebäck och Forshaga. Under studien var vattenföringen, och därmed spillet, lågt, vilket troligen bidragit till de höga förlusterna. Normalt spills det inte under hela smoltvandringsperioden, vilket är olyckligt.

    Lax och öring uppfödda under normala odlingsförhållanden är oftast större och fetare än vild fisk. Vi födde upp lax med olika fodertyper och fodermängder. Mängden föda påverkade laxens tillväxt och smoltmognad, och lax som fått fettfattigt foder var mest ”naturlik”. Den klarade också vandringen bäst, 80 % tog sig till Vänern medan 55 % av laxen som fått normalt eller lite foder. Bara 20 % av tidigt könsmogna hanar tog sig till Vänern.

    Rapporten avslutas med implikationer och förslag till åtgärder och fortsatta studier.

  • 9.
    Bergman, Eva
    et al.
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Greenberg, Larry
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Norrgård, Johnny R
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Piccolo, John J
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Schmitz, Monika
    Uppsala universitet.
    Lax och öring i Klarälven - möjligheter för vild fisk och kvalité på utsatt fisk: Rapport av aktiviteter och uppnådda resultat under 2009-20102010Report (Other academic)
  • 10.
    Bergman, Eva
    et al.
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Environmental and Life Sciences.
    Greenberg, Larry
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Environmental and Life Sciences.
    Norrgård, Johnny R
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Environmental and Life Sciences.
    Piccolo, John J
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Environmental and Life Sciences.
    Schmitz, Monika
    Lax och öring i Klarälven - möjligheter för vild fisk och kvalité på utsatt fisk: Rapport av aktiviteter och uppnådda resultat under 2010-20112011Report (Other academic)
  • 11.
    Bergman, Eva
    et al.
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Greenberg, Larry
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Piccolo, John
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Norrgård, Johnny
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Schmitz, Monika
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Lax och öring i Klarälven: möjligheter för vild fisk och kvalité på utsatt fisk2009Report (Other academic)
  • 12.
    Bergman, Eva
    et al.
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Piccolo, John
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Greenberg, Larry
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Raising brown trout (Salmo trutta) with less food - effects on smolt development and fin damage2013In: Aquaculture Research, ISSN 1355-557X, E-ISSN 1365-2109, Vol. 44, p. 1002-1006Article in journal (Refereed)
  • 13.
    Bergman, Eva
    et al.
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Piccolo, John
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Norrgård, Johnny
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Greenberg, Larry
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Schmitz, Monika
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Landlocked migrating salmonids in large regulated systems2010Conference paper (Refereed)
  • 14. Brönmark, C.
    et al.
    Dahl, J.
    Greenberg, Larry
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Complex trophic interactions in freshwater benthic food chains1997In: Eds Streit, B, Städler, T & Lively, C. M., Evolutionary Ecology of Freshwater Animals: Concepts and Case Studies, Birkhäuser, pp. 55-88Article in journal (Refereed)
  • 15.
    Calles, Olle
    et al.
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Greenberg, L.A.
    Karlstad University, Faculty of Social and Life Sciences.
    Evaluation of nature-like fishways for re-establishing connectivity in fragmented salmonid populations in the River Emån2005In: Rivers Research and Applications: an international journal devoted to river research and management, ISSN 1535-1459, E-ISSN 1535-1467, Vol. 21, no 9, p. 951-960Article in journal (Refereed)
    Abstract [en]

    We evaluated the function of two nature-like fishways for re-establishing connectivity for anadromous salmonids in the regulated River Emån. Between 90 and 100% of the salmonids that entered the fishways actually passed through them, with median speeds of 180–190mh  1. Only 50% of the anadromous brown trout that passed the first fishway also passed the second one, indicating that the fish might have had problems locating the upstream fishway. The fishways were also observed to function as a passage for downstream post-spawning migrants. The densities of brown trout yearlings upstream of the fishways were higher in 2002, after the fishways were built, than during pre-fishway years. In control sites in other parts of the river as well as in a nearby river, no changes in yearling densities were observed. Thus, the fishways are working for upstream spawners, albeit at a recolonization rate that is slower than expected.

  • 16.
    Calles, Olle
    et al.
    Karlstad University, Division for Environmental Sciences.
    Greenberg, L.A.
    Karlstad University, Division for Environmental Sciences.
    The pre- and postspawning movements of anadromous brown trout in relation to two low-head power plantsManuscript (Other academic)
  • 17.
    Calles, Olle
    et al.
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Greenberg, L.A.
    Karlstad University, Faculty of Social and Life Sciences.
    The use of two nature-like fishways by some fish species in the Swedish River Emån: Nature-like fishways2007In: Ecology of Freshwater Fish, ISSN 0906-6691, E-ISSN 1600-0633, Vol. 16, no 2, p. 183-190Article in journal (Refereed)
    Abstract [en]

    We studied the use of two nature-like fishways by 15 fish species (N ¼ 240) in the River Emån in southern Sweden. Use of the fishways for both passage and as a habitat was studied by electrofishing, trap catches and PIT telemetry. Of the 187 PIT-tagged fish, 52 individuals from 10 different species ascended one of the fishways for a total passage efficiency of 74%. For the five species that most frequently ascended the fishways, the passage efficiency was 100% for tench (Tinca tinca L.) and perch (Perca fluviatilis L.), 86% for chub (Leuciscus cephalus L.), 60% for burbot (Lota lota L.) and 50% for roach (Rutilus rutilus L.). Individuals that failed to pass the fishways were typically small cyprinids or species that were assumed to have taken up residence in the fishways, such as juvenile brown trout (Salmo trutta L.) and burbot. The nature-like fishways have re-established longitudinal connectivity for most of the studied species and also functioned as rearing and winter habitat for a number of species.

  • 18.
    Calles, Olle
    et al.
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Greenberg, Larry
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Downstream passage in two rivers in Southern Sweden2009Conference paper (Refereed)
  • 19.
    Calles, Olle
    et al.
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Greenberg, Larry
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Evaluating fishway function in a regulated river2005Conference paper (Refereed)
  • 20.
    Calles, Olle
    et al.
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Greenberg, Larry
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Evaluating fishway function in a regulated river2005Conference paper (Refereed)
  • 21.
    Calles, Olle
    et al.
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Greenberg, Larry
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Evaluating the effectiveness of bypass channels in a regulated river2003Conference paper (Refereed)
  • 22.
    Calles, Olle
    et al.
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Environmental and Life Sciences.
    Greenberg, Larry
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Evaluation of nature-like fishways for re-establishing connectivity in fragmented salmonid populations in the River Emån2005In: Rivers Research and Applications: an international journal devoted to river research and management, ISSN 1535-1459, E-ISSN 1535-1467, Vol. 21, no 9, p. 951-960Article in journal (Refereed)
    Abstract [en]

    We evaluated the function of two nature-like fishways for re-establishing connectivity for anadromous salmonids in the regulated River Eman. Between 90 and 100% of the salmonids that entered the fishways actually passed through them, with median speeds of 180-190 m h(-1). Only 50% of the anadromous brown trout that passed the first fishway also passed the second one, indicating that the fish might have had problems locating the upstream fishway. The fishways were also observed to function as a passage for downstream post-spawning migrants. The densities of brown trout yearlings upstream of the fishways were higher in 2002, after the fishways were built, than during pre-fishway years. In control sites in other parts of the river as well as in a nearby river, no changes in yearling densities were observed. Thus, the fishways are working for upstream spawners, albeit at a recolonization rate that is slower than expected. Copyright (c) 2005 John Wiley & Sons, Ltd

  • 23.
    Calles, Olle
    et al.
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Greenberg, Larry
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Fish passage and monitoring in Southern Sweden2009Conference paper (Refereed)
  • 24.
    Calles, Olle
    et al.
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Greenberg, Larry
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Fishways in regulated rivers: Consequences of a remedial measure for a stream’s productivity2002Conference paper (Refereed)
  • 25.
    Calles, Olle
    et al.
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Greenberg, Larry
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Fiskvandringsproblematik i Emån och Ätran2008Conference paper (Other academic)
  • 26.
    Calles, Olle
    et al.
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Greenberg, Larry
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Re-establishing connectivity for fish populations in regulated rivers2005Conference paper (Refereed)
  • 27.
    Calles, Olle
    et al.
    Karlstad University, Division for Environmental Sciences.
    Greenberg, Larry
    Karlstad University, Division for Environmental Sciences.
    Survival and movement of wild brown trout smolts past two power plantsManuscript (Other academic)
  • 28.
    Calles, Olle
    et al.
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Greenberg, Larry
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    The use of two nature-like fishways by some fish species in the Swedish River Emån2007In: Ecology of Freshwater FishArticle in journal (Refereed)
    Abstract [en]

    We studied the use of two nature-like fishways by 15 fish

    species (N ¼ 240) in the River Emån in southern Sweden. Use of the fishways for both passage and as a habitat was studied by electrofishing, trap catches and PIT telemetry. Of the 187 PIT-tagged fish, 52 individuals

    from 10 different species ascended one of the fishways for a total passage efficiency of 74%. For the five species that most frequently ascended the fishways, the passage efficiency was 100% for tench (Tinca tinca L.) and perch (Perca fluviatilis L.), 86% for chub (Leuciscus cephalus L.), 60% for burbot (Lota lota L.) and 50% for roach (Rutilus rutilus L.). Individuals that failed to pass the fishways were typically small cyprinids or species

    that were assumed to have taken up residence in the fishways, such as juvenile brown trout (Salmo trutta L.) and burbot. The nature-like fishways have re-established longitudinal connectivity for most of the studied species and also functioned as rearing and winter habitat for a number of species

  • 29.
    Calles, Olle
    et al.
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Greenberg, Larry
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Use of PIT-tags in evaluating the effectiveness of fish by-pass channels in the regulated River Emån, Sweden2003Conference paper (Refereed)
  • 30.
    Calles, Olle
    et al.
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Greenberg, Larry
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    WP 3 Emån - Aktiviteter 2009-2010 och återstående verksamhet2010Conference paper (Other (popular science, discussion, etc.))
  • 31.
    Calles, Olle
    et al.
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Greenberg, Larry
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Åtgärder och dess effekter på öringpopulationen i Emån2010Conference paper (Refereed)
  • 32.
    Calles, Olle
    et al.
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Greenberg, Larry
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Kriström, B
    Leonardsson, K
    Paulrud, A
    Ranneby, B
    Cost-Benefit Analysis of River Regulation: The case of Emån and Ljusnan. Scientific summary report: Samhällsekonomisk analys av alternativa åtgärder i flödespåverkade vattendrag: Emån och Ljusnan2010Report (Refereed)
  • 33.
    Calles, Olle
    et al.
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Greenberg, Larry
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Leonardsson, Kjell
    Rivinoja, Peter
    Comoglio, Claudio
    Vezza, Paolo
    Kemp, Paul
    Russon, Iain
    Konnektivitet, åtgärder och åtgärdsscenarier i Emån2010Conference paper (Refereed)
  • 34.
    Calles, Olle
    et al.
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Greenberg, Larry
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Nyberg, Lars
    Karlstad University, Faculty of Social and Life Sciences, Centre for Climate and Safety.
    Löwgren, Marianne
    Fiskvägar och flödesregimåtgärder i reglerade vatten:: Konsekvenser för vattendragets produktivitet och för samhällsnyttan2003Report (Refereed)
  • 35.
    Calles, Olle
    et al.
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Greenberg, Larry
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Rivinoja, Peter
    Institutionen för vilt, fisk och miljö. SLU, Umeå.
    A historical perspective on downstream passage at hydroelectric plants in Swedish rivers2013In: Ecohydraulics: an integrated approach / [ed] Ian Maddock, Atle Harby, Paul Kemp and Paul Wood, West Sussex, UK: John Wiley & Sons, 2013, 1, p. 309-322Chapter in book (Refereed)
  • 36.
    Calles, Olle
    et al.
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Greenberg, Larry
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Schmitz, Monika
    Fisheries Research at Karlstad University2007Conference paper (Other (popular science, discussion, etc.))
  • 37.
    Calles, Olle
    et al.
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Greenberg, Larry
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Schmitz, Monika
    Bergman, Eva
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Hultman, Jens
    Andersson, Jonas
    Smolt migration in the River Klarälven, the importance of food2006Conference paper (Refereed)
  • 38.
    Calles, Olle
    et al.
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Greenberg, Larry
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Tielman, Johan
    Comoglio, Claudio
    Hebrand, Mats
    Alenäs, Ingemar
    Improving passage conditions for downstream moving fish at hydroelectric plants2010Conference paper (Refereed)
    Abstract

    Many attempts at defragmenting regulated rivers only address the issue of upstream passage. Large sums of money are being spent on trying to solve the upstream passage problems at hydroelectric facilities, disregarding the problems experienced by both juvenile and adult anadromous fish on their way to the sea. Fish can be delayed, injured or even killed when attempting to pass hydroelectric plants (HEPs) via turbines, bypass devices, spill gates, trash gates or trash racks. Mitigation measures are increasingly employed to decrease the risk of injury to migratory fish at dams, mainly by preventing fish from entering the turbines and directing them to alternative routes with low risk of injury. Most frequently, screens are installed to prevent ingress into turbines, and in many countries this is a legislative requirement. However, the impingement of fish on the screens under high velocities can also result in significant mortality, and in some cases may negate the benefit associated with their placement.

    This presentation describes the background, design and evaluation of four rehabilitative measures at hydroelectric plants (HEPs) in southern Sweden. In the River Ätran low sloping racks and surface spill gates were implemented and tested for eels, trout and Atlantic salmon. In the River Emån the rehabilitative work focused on if a low-sloping rack and a surface spill gate could improve the passage conditions for anadromous trout and chub. In the River Alsterälven downstream migrating silver eels were offered spill pipes at different depths to study their depth preference.

  • 39.
    Calles, Olle
    et al.
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Environmental and Life Sciences.
    Griffioen, Ben
    IMARES Wageningen UR, Netherlands.
    Winter, Erwin
    IMARES Wageningen UR, Netherlands.
    Watz, Johan
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Environmental and Life Sciences.
    Nyqvist, Daniel
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Environmental and Life Sciences.
    Hagelin, Anna
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Environmental and Life Sciences.
    Gustafsson, Stina
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Environmental and Life Sciences.
    Österling, Martin
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Environmental and Life Sciences.
    Piccolo, John
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Environmental and Life Sciences.
    Greenberg, Larry
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Environmental and Life Sciences.
    Bergman, Eva
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Environmental and Life Sciences.
    Fish Migration River Monitoring Plan2014Report (Other academic)
    Abstract [en]

    Fish have problems passing the Afsluitdijk Dam that separates the Wadden Sea from Lake IJsselmeer. To re-establish the connectivity and thereby allow fish to pass there is an initiative to build a fishway, the Fish Migration River (FMR), at the Konwerderzand sluice complex. This report proposes a monitoring program to evaluate the functionality of the FMR, but also to monitor passage possibilities through the existing sluices. The goals of the monitoring plan are to estimate 1) The overall passage past the Afsluitdijk dam to and from Lake IJsselmeer, 2) The attraction efficiency, 3) The passage efficiency, and 4) The use of the FMR as habitat and for acclimatization for the transition into freshwater.

    We present an overview of previous and ongoing monitoring in the area to establish the current state of knowledge. The report also includes a presentation of available and suitable methods for a future monitoring program considering the broad spectra of target fish species, and their abundances. The proposed program includes a description of study design and available techniques and cost-estimates of the monitoring program.

    The proposed program will target ten species: European eel (aal), flounder (bot), three-spined stickleback (dreidoornige stekelbaars), twait shad (fint), North Sea houting (houting), river lamprey (rieverprik), smelt (spiering), Atlantic salmon (zalm), brown trout (forel) and sea lamprey (zeeprik). The monitoring program includes plans for how to capture, tag and track the study fish using the most suitable tagging techniques. Furthermore, the most optimal sites for installation of automatic data detection stations are identified.

    The total cost for the proposed project is 3.5 M€ and covers both investments in equipment and costs for personnel. However, if costs for investments in techniques such as RFId-stations and fish counters are excluded, the total cost is reduced to 1 M€ for a program running two years before and four years after the completion of the FMR. The program is considered sufficient to evaluate the FMR at Kornwerederzand from the most important perspectives: the overall passage efficiency and the use of the FMR as habitat.

    It should be noted that this report is the first step towards a full-scale monitoring program, giving insight into possible methods, study design and associated costs. The next important step will be to develop the program in more detail and to start the initial phase of the monitoring project. We predict that such activities will identify the need for, and the relevance of, a more extensive monitoring program to study the effects of the FMR on a population level and on a large geographical scale.

  • 40.
    Calles, Olle
    et al.
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Nyberg, Lars
    Karlstad University, Faculty of Social and Life Sciences, Centre for Climate and Safety.
    Greenberg, Larry
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Temporal and spatial variation in quality of hyporheic water in one unregulated and two regulated boreal rivers2007In: River research and applications, ISSN 1535-1459, Vol. 23, no 8, p. 829-842Article in journal (Refereed)
    Abstract [en]

    This study describes the temporal and spatial variations in hyporheic water quality in three boreal rivers, the River Tobyälven, an unregulated river, the river Mangälven, a regulated river with a minimum discharge requirement and the river Järperudsälven, aregulated river without any minimum discharge requirements. A total of 43 permanent piezometers were used to measure dissolved oxygen (DO), temperature, electrical conductivity, pH, NO3 and NHþ4in the hyporheic water at 150mm and 300mmdepth, at monthly intervals from October 2001 to October 2002. Another seven piezometers were installed in brown trout redds and monitored during the incubation period, from December 2001 to April 2002. In the river Tobyälven, temporal patterns in hyporheic water chemistry correlated to variations in surface water chemistry and discharge. In the river Järperudsälven, the hyporheic water chemistry did not correlate to discharge or surface water chemistry. In the river Mangälven, the water chemistry was dominated by releases from a large upstream lake, and there were weak correlations between surface water chemistry and hyporheic water chemistry at some sites. The incubation conditions for brown trout eggs were most favourable in the unregulated river, characterized by high DO levels that remained high throughout the incubation period. In the river Järperudsälven the DO levels were variable during spawning, and then gradually declined to critically low levels during incubation, whereas in the river Mangälven the DO conditions were intermediate and stable. Thus we observed a stronger coupling between surface water conditions and hyporheic conditions, i.e. vertical connectivity, in the unregulated river than in the regulated river with minimum flow requirements, which in turn was stronger than in the river without minimum flow requirements.

  • 41.
    Calles, Olle
    et al.
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Nyberg, Lars
    Karlstad University, Faculty of Social and Life Sciences, Centre for Climate and Safety.
    Greenberg, Larry
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Temporal and spatial variation in quality of hyporheic water in one unregulated and two regulated boreal rivers2007In: River Research and ApplicationsArticle in journal (Refereed)
    Abstract [en]

    This study describes the temporal and spatial variations in hyporheic water quality in three boreal rivers, the River Tobyälven, an unregulated river, the river Mangälven, a regulated river with a minimum discharge requirement and the river Järperudsälven, a

    regulated river without any minimum discharge requirements. A total of 43 permanent piezometers were used to measure dissolved oxygen (DO), temperature, electrical conductivity, pH, NO3 and NH4 in the hyporheic water at 150mm and 300mm depth, at monthly intervals from October 2001 to October 2002. Another seven piezometers were installed in brown trout redds and monitored during the incubation period, from December 2001 to April 2002. In the river Tobyälven, temporal patterns in hyporheic water chemistry correlated to variations in surface water chemistry and discharge. In the river Jäperudsälven, the hyporheic water chemistry did not correlate to discharge or surface water chemistry. In the river Mangälven, the water chemistry was dominated by releases from a large upstream lake, and there were weak correlations between surface water chemistry and

    hyporheic water chemistry at some sites. The incubation conditions for brown trout eggs were most favourable in the unregulated river, characterized by high DO levels that remained high throughout the incubation period. In the river Järperudsälven the DO

    levels were variable during spawning, and then gradually declined to critically low levels during incubation, whereas in the river Mangälven the DO conditions were intermediate and stable. Thus we observed a stronger coupling between surface water

    conditions and hyporheic conditions, i.e. vertical connectivity, in the unregulated river than in the regulated river with minimum flow requirements, which in turn was stronger than in the river without minimum flow requirements. Copyright # 2007 John

    Wiley & Sons, Ltd

  • 42.
    Calles, Olle
    et al.
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Olsson, Ivan
    Schmitz, Monika
    Greenberg, Larry
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Karlsson, Simon
    Bergdahl, Daniel
    Ålens nedströms passage av vattenkraftverk: Årsrapport 1 för ålprojekt Ätran Hösten 20072007Report (Refereed)
  • 43.
    Calles, Olle
    et al.
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Schmitz, Monika
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Greenberg, Larry
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Olsson, Ivan
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Comoglio, C
    Kemp, P.S
    Blunden, L
    Size-dependent mortality of migratory silver eels at a hydropower plant, and implications for escapement to the sea2010In: Freshwater Biology, ISSN 0046-5070, E-ISSN 1365-2427, Vol. 55, no 10, p. 2167-2180Article in journal (Refereed)
  • 44.
    Calles, Olle
    et al.
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Tielman, Johan
    E.ON Vattenkraft.
    Alenäs, Ingemar
    Falkenbergs kommun.
    Comoglio, Claudio
    DITAG—Land, Environment and Geo-Engineering Department, Politecnico di Torino.
    Greenberg, Larry
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Rehabilitating the River Ätran for diadromous fish species2010Conference paper (Refereed)
  • 45. Cassing, Gunilla
    et al.
    Greenberg, Larry
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Mikusinski, G.
    Moose (Alces alces) browsing in young forest stands in central Sweden: a multi-scale perspective2006In: Scandinavian Journal of Forest ResearchArticle in journal (Refereed)
  • 46. Dahl, J.
    et al.
    Greenberg, Larry
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Effect of habitat type on fish-invertebrate interactions1998In: Hydrobiologia 361: 67-76Article in journal (Refereed)
  • 47. Dahl, J.
    et al.
    Greenberg, Larry
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Effects of physical structure on habitat use by Gammarus pulex1996In: Freshwater Biology 36: 487-495Article in journal (Refereed)
  • 48. Dahl, J.
    et al.
    Greenberg, Larry
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Effects of prey dispersal on predator-prey interactions in streams1999In: Freshwater Biology 41: 771-780Article in journal (Refereed)
  • 49. Dahl, J.
    et al.
    Greenberg, Larry
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Foraging rates of a vertebrate and invertebrate predator in stream enclosures1997In: Oikos 78: 459-466Article in journal (Refereed)
  • 50. Dahl, J.
    et al.
    Greenberg, Larry
    Karlstad University, Faculty of Social and Life Sciences, Department of Biology.
    Impact on stream benthic prey by benthic vs drift feeding predators: a meta-analysis1996In: Oikos 77: 177-181Article in journal (Refereed)
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