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Sarneel JM, Hefting MM, Sandén T, van den Hoogen J, Routh D, Adhikari BS, Alatalo JM, Aleksanyan A, Althuizen IHJ, Alsafran MHSA, Atkins JW, Augusto L, Aurela M, Azarov AV, Barrio IC, Beier C, Bejarano MD, Benham SE, Berg B, Bezler NV, Björnsdóttir K, Bolinder MA, Carbognani M, Cazzolla Gatti R, Chelli S, Chistotin MV, Christiansen CT, Courtois P, Crowther TW, Dechoum MS, Djukic I, Duddigan S, Egerton-Warburton LM, Fanin N, Fantappiè M, Fares S, Fernandes GW, Filippova NV, Fliessbach A, Fuentes D, Godoy R, Grünwald T, Guzmán G, Hawes JE, He Y, Hero JM, Hess LL, Hogendoorn K, Høye TT, Jans WWP, Jónsdóttir IS, Keller S, Kepfer-Rojas S, Kuz'menko NN, Larsen KS, Laudon H, Lembrechts JJ, Li J, Limousin JM, Lukin SM, Marques R, Marín C, McDaniel MD, Meek Q, Merzlaya GE, Michelsen A, Montagnani L, Mueller P, Murugan R, Myers-Smith IH, Nolte S, Ochoa-Hueso R, Okafor BN, Okorkov VV, Onipchenko VG, Orozco MC, Parkhurst T, Peres CA, Petit Bon M, Petraglia A, Pingel M, Rebmann C, Scheffers BR, Schmidt I, Scholes MC, Sheffer E, Shevtsova LK, Smith SW, Sofo A, Stevenson PR, Strouhalová B, Sundsdal A, Sühs RB, Tamene G, Thomas HJD, Tolunay D, Tomaselli M, Tresch S, Tucker DL, Ulyshen MD, Valdecantos A, Vandvik V, Vanguelova EI, Verheyen K, Wang X, Yahdjian L, Yumashev XS, Keuskamp JA. Reading tea leaves worldwide: Decoupled drivers of initial litter decomposition mass-loss rate and stabilization. Ecol Lett 2024; 27:e14415. [PMID: 38712683 DOI: 10.1111/ele.14415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Revised: 01/26/2024] [Accepted: 02/27/2024] [Indexed: 05/08/2024]
Abstract
The breakdown of plant material fuels soil functioning and biodiversity. Currently, process understanding of global decomposition patterns and the drivers of such patterns are hampered by the lack of coherent large-scale datasets. We buried 36,000 individual litterbags (tea bags) worldwide and found an overall negative correlation between initial mass-loss rates and stabilization factors of plant-derived carbon, using the Tea Bag Index (TBI). The stabilization factor quantifies the degree to which easy-to-degrade components accumulate during early-stage decomposition (e.g. by environmental limitations). However, agriculture and an interaction between moisture and temperature led to a decoupling between initial mass-loss rates and stabilization, notably in colder locations. Using TBI improved mass-loss estimates of natural litter compared to models that ignored stabilization. Ignoring the transformation of dead plant material to more recalcitrant substances during early-stage decomposition, and the environmental control of this transformation, could overestimate carbon losses during early decomposition in carbon cycle models.
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Affiliation(s)
- Judith M Sarneel
- Department of Ecology and Environmental Science, Umeå Universitet, Umeå, Sweden
- Ecology and Biodiversity Group, Institute of Environmental Biology, Utrecht University, Utrecht, The Netherlands
| | - Mariet M Hefting
- Ecology and Biodiversity Group, Institute of Environmental Biology, Utrecht University, Utrecht, The Netherlands
| | - Taru Sandén
- Department for Soil Health and Plant Nutrition, Austrian Agency for Health and Food Safety (AGES), Vienna, Austria
| | - Johan van den Hoogen
- Department of Environmental Systems Science, Institute of Integrative Biology, ETH Zürich, Zurich, Switzerland
| | - Devin Routh
- Department of Environmental Systems Science, Institute of Integrative Biology, ETH Zürich, Zurich, Switzerland
- Science IT, University of Zürich, Zurich, Switzerland
| | | | - Juha M Alatalo
- Environmental Science Center, Qatar University, Doha, Qatar
| | - Alla Aleksanyan
- Department of Geobotany and Plant Ecophysiology, Institute of Botany aft. A.L. Takhtajyan NAS of RA, Yerevan, Armenia
| | - Inge H J Althuizen
- Department of Biological Sciences and Bjerknes Centre for Climate Research, University of Bergen, Bergen, Norway
- NORCE Norwegian Research Centre AS, Bjerknes Centre for Climate Research, Bergen, Norway
| | | | - Jeff W Atkins
- USDA Forest Service, Southern Research Station, New Ellenton, South Carolina, USA
| | - Laurent Augusto
- INRAE, Bordeaux Sciences Agro, ISPA, Villenave d'Ornon, France
| | - Mika Aurela
- Finnish Meteorological Institute, Climate System Research, Helsinki, Finland
| | | | - Isabel C Barrio
- Faculty of Environmental and Forest Sciences, Agricultural University of Iceland, Reykjavík, Iceland
| | - Claus Beier
- Department of Geosciences and Natural Resource Management, University of Copenhagen, Copenhagen, Denmark
| | - María D Bejarano
- Department of Natural Systems and Resources, Universidad Politécnica de Madrid, Madrid, Spain
| | | | - Björn Berg
- Department of Forest Sciences, University of Helsinki, Helsinki, Finland
| | - Nadezhda V Bezler
- All-Russian Institute of Sugar and Sygar Beet Named after D. Mazlumov, Ramon, Russia
| | - Katrín Björnsdóttir
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
| | - Martin A Bolinder
- Department of Ecology, Swedish University of Agricultural Sciences (SLU), Uppsala, Sweden
| | - Michele Carbognani
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma, Italy
| | - Roberto Cazzolla Gatti
- Biological Institute, Tomsk State University, Tomsk, Russia
- Department of Biological, Geological and Environmental Sciences, University of Bologna, Bologna, Italy
| | - Stefano Chelli
- School of Biosciences and Veterinary Medicine, University of Camerino, Camerino, MC, Italy
| | - Maxim V Chistotin
- All-Russian Research Institute of Agrochemistry Named after D. Pryanishnikov, Moscow, Russia
| | - Casper T Christiansen
- Center for Permafrost (CENPERM), Department of Geosciences and Natural Resource Management, University of Copenhagen, Copenhagen, Denmark
- Terrestrial Ecology Section, Department of Biology, University of Copenhagen, Copenhagen Ø, Denmark
| | - Pascal Courtois
- UMR Silva, INRAE, AgroParisTech, Université de Lorraine, Nancy, France
| | - Thomas W Crowther
- Department of Environmental Systems Science, Institute of Integrative Biology, ETH Zürich, Zurich, Switzerland
| | - Michele S Dechoum
- Departamento de Ecologia e Zoologia, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | - Ika Djukic
- Swiss Federal Institute for Forest, Snow and Landscape Research WSL, Zurich, Switzerland
| | - Sarah Duddigan
- Department of Geography and Environmental Science, University of Reading, Reading, UK
| | | | - Nicolas Fanin
- INRAE, Bordeaux Sciences Agro, ISPA, Villenave d'Ornon, France
| | - Maria Fantappiè
- Consiglio per la Ricerca in Agricoltura e l'Analisi dell'Economia Agraria, Rome, Italy
| | - Silvano Fares
- National Research Council of Italy Institute for Agriculture and Forestry Systems in the Mediterranean, Naples, Italy
| | - Geraldo W Fernandes
- Departamento de Genética, Ecologia & Evolução, ICB/Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
- Knowledge Center for Biodiversity, Belo Horizonte, MG, Brazil
| | | | | | | | - Roberto Godoy
- Instituto de Ciencias Ambientales y Evolutivas, Universidad Austral de Chile, Valdivia, Chile
| | - Thomas Grünwald
- Institute of Hydrology and Meteorology, TUD Dresden University of Technology, Tharandt, Germany
| | - Gema Guzmán
- Andalusian Institute of Agricultural and Fisheries Research and Training (IFAPA), Camino de Purchil, Granada, Spain
- Institute for Sustainable Agriculture-CSIC, Cordoba, Spain
| | - Joseph E Hawes
- Applied Ecology Research Group, School of Life Sciences, Anglia Ruskin University, Cambridge, UK
- Earth Research Institute, University of California, Santa Barbara, California, USA
- Institute of Science and Environment, University of Cumbria, Ambleside, Cumbria, UK
| | - Yue He
- College of Urban and Environmental Sciences, Sino-French Institute for Earth System Science, Institute of Carbon Neutrality, Peking University, Beijing, China
- International Institute for Applied Systems Analysis (IIASA), Laxenburg, Austria
| | - Jean-Marc Hero
- School of Anthropology and Conservation, Durrell Institute of Conservation and Ecology, University of Kent, Canterbury, UK
- School of Science, Technology and Engineering, The University of the Sunshine Coast, Maroochydore, Queensland, Australia
| | - Laura L Hess
- Earth Research Institute, University of California, Santa Barbara, California, USA
| | - Katja Hogendoorn
- School of Agriculture, Food and Wine, The University of Adelaide, Adelaide, South Australia, Australia
| | - Toke T Høye
- Department of Ecoscience and Arctic Research Centre, Aarhus University, Aarhus C, Denmark
| | - Wilma W P Jans
- Wageningen Environmental Research, Wageningen, The Netherlands
| | | | - Sabina Keller
- Department of Environmental Systems Science, ETH Zurich, Zurich, Switzerland
| | - Sebastian Kepfer-Rojas
- Department of Geosciences and Natural Resource Management, University of Copenhagen, Copenhagen, Denmark
| | | | - Klaus S Larsen
- Department of Geosciences and Natural Resource Management, University of Copenhagen, Copenhagen, Denmark
| | - Hjalmar Laudon
- Department of Forest Ecology and Management, Swedish University of Agricultural Sciences, Umeå, Sweden
| | - Jonas J Lembrechts
- Research Group Plants and Ecosystems (PLECO), University of Antwerp, Wilrijk, Belgium
| | - Junhui Li
- Center for Ecosystem Science and Society, Northern Arizona University, Flagstaff, Arizona, USA
- Department of Earth System Science, University of California, Irvine, California, USA
| | | | - Sergey M Lukin
- Upper Volga Federal Agrarain Scientific Center, Vladimir, Russia
| | - Renato Marques
- Departamento de Solos e Engenharia Agrícola, Universidade Federal do Paraná, Curitiba, Brasil
| | - César Marín
- Centro de Investigación e Innovación para el Cambio Climático (CiiCC), Universidad Santo Tomás, Valdivia, Chile
| | | | - Qi Meek
- Department of Renewable Resources, Faculty of Agricultural, Life and Environmental Science, University of Alberta, Edmonton, Alberta, Canada
| | - Genrietta E Merzlaya
- All-Russian Research Institute of Agrochemistry Named after D. Pryanishnikov, Moscow, Russia
| | - Anders Michelsen
- Center for Permafrost (CENPERM), Department of Geosciences and Natural Resource Management, University of Copenhagen, Copenhagen, Denmark
- Department of Biology, University of Copenhagen, Copenhagen Ø, Denmark
| | - Leonardo Montagnani
- Forest Services, Autonomous Province of Bozen-Bolzano, Bolzano, Italy
- Libera Universita di Bolzano, Facoltà di Scienze e Tecnologie, Piazza Università, Bolzano, Italy
| | - Peter Mueller
- Smithsonian Environmental Research Center, Edgewater, Maryland, USA
- Institute of Plant Science and Microbiology, Universität Hamburg, Hamburg, Germany
| | - Rajasekaran Murugan
- Soil Biology and Plant Nutrition, Faculty of Organic Agricultural Sciences, University of Kassel, Witzenhausen, Germany
- Valli Sustainability Research and Education, Kanchipuram, Tamil Nadu, India
| | - Isla H Myers-Smith
- Department of Forest and Conservation Sciences, Faculty of Forestry, Forest Sciences Centre, University of British Columbia, Vancouver, British Columbia, Canada
- School of GeoSciences, University of Edinburgh, Edinburgh, Scotland, UK
| | - Stefanie Nolte
- School of Environmental Sciences, University of East Anglia, Norwich, UK
- Centre for Environment, Fisheries and Aquaculture Science, Lowestoft, UK
| | - Raúl Ochoa-Hueso
- Department of Biology, IVAGRO, University of Cádiz, Campus de Excelencia Internacional Agroalimentario (ceiA3), Cádiz, Spain
| | | | | | - Vladimir G Onipchenko
- Department of Ecology and Plant Geography, Biological Faculty, Lomonosov Moscow State University, Moscow, Russia
| | - María C Orozco
- Department of Biological Sciences, Universidad de los Andes, Bogotá, Colombia
| | - Tina Parkhurst
- School of Environmental and Conservation Sciences, Murdoch University, Murdoch, Western Australia, Australia
| | - Carlos A Peres
- School of Environmental Sciences, University of East Anglia, Norwich, UK
| | - Matteo Petit Bon
- Department of Arctic Biology, The University Centre in Svalbard, Longyearbyen, Svalbard, Norway
- Department of Arctic and Marine Biology, Faculty of Biosciences Fisheries and Economics, The Arctic University of Norway, Tromsø, Norway
- Department of Wildland Resources, Quinney College of Natural Resources and Ecology Center, Utah State University, Logan, Utah, USA
| | - Alessandro Petraglia
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma, Italy
| | - Martin Pingel
- Department of Applied Ecology, Hochschule Geisenheim University, Geisenheim, Germany
| | - Corinna Rebmann
- Helmholtz Centre for Environmental Research - UFZ, Leipzig, Germany
| | - Brett R Scheffers
- Department of Wildlife Ecology and Conservation, University of Florida, Gainesville, Florida, USA
| | - Inger Schmidt
- Department of Geosciences and Natural Resource Management, University of Copenhagen, Copenhagen, Denmark
| | - Mary C Scholes
- School of Animal, Plant and Environmental Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Efrat Sheffer
- Institute of Plant Science and Genetics in Agriculture, The Hebrew University of Jerusalem, Rehovot, Israel
| | - Lyudmila K Shevtsova
- All-Russian Research Institute of Agrochemistry Named after D. Pryanishnikov, Moscow, Russia
| | - Stuart W Smith
- Department of Biology, Norwegian University of Science and Technology, Trondheim, Norway
- Ecological Science Department, The James Hutton Institute, Aberdeen, UK
| | - Adriano Sofo
- Department of European and Mediterranean Cultures: Architecture, Environment, Cultural Heritage (DiCEM), University of Basilicata, Matera, Italy
| | | | - Barbora Strouhalová
- Departement of Physical Geography and Geoecology, Faculty of Science, Charles University, Prague, Czech Republic
| | - Anders Sundsdal
- Department of Biology, Norwegian University of Science and Technology, Trondheim, Norway
- Faculty of Technology, Natural Sciences and Maritime Sciences, University of South-Eastern, Notodden, Norway
| | - Rafael B Sühs
- Programa de pós-graduacão em Ecologia, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | - Gebretsadik Tamene
- Department of Natural Resource Management, College of Agriculture and Environmental, University of Gondar, Gondar, Ethiopia
| | - Haydn J D Thomas
- School of Environmental Sciences, University of East Anglia, Norwich, UK
| | - Duygu Tolunay
- Ecology and Biodiversity Group, Institute of Environmental Biology, Utrecht University, Utrecht, The Netherlands
| | - Marcello Tomaselli
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma, Italy
| | - Simon Tresch
- Institute for Applied Plant Biology, Witterswil, Switzerland
| | - Dominique L Tucker
- Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
- Center for Energy, Environment and Sustainability, Department of Biology, Wake Forest University, Winston-Salem, North Carolina, USA
| | - Michael D Ulyshen
- USDA Forest Service, Southern Research Station, Athens, Georgia, USA
| | - Alejandro Valdecantos
- Department of Ecology, University of Alicante, Alicante, Spain
- Multidisciplinary Institute for Environmental Studies, Ramon Margalef, IMEM, University of Alicante, Alicante, Spain
| | - Vigdis Vandvik
- Department of Biological Sciences and Bjerknes Centre for Climate Research, University of Bergen, Bergen, Norway
| | | | - Kris Verheyen
- Department of Environment, Forest and Nature Lab, Gent University, Ghent, Belgium
| | - Xuhui Wang
- College of Urban and Environmental Sciences, Sino-French Institute for Earth System Science, Institute of Carbon Neutrality, Peking University, Beijing, China
| | - Laura Yahdjian
- Cátedra de Ecología, Facultad de Agronomía, UBA, Buenos Aires, Argentina
- Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA), Facultad de Agronomía, Universidad de Buenos Aires and CONICET, Buenos Aires, Argentina
| | | | - Joost A Keuskamp
- Ecology and Biodiversity Group, Institute of Environmental Biology, Utrecht University, Utrecht, The Netherlands
- Biont Research, Utrecht, The Netherlands
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Wilfahrt PA, Schweiger AH, Abrantes N, Arfin‐Khan MAS, Bahn M, Berauer BJ, Bierbaumer M, Djukic I, Dusseldorp M, Eibes P, Estiarte M, Hessberg A, Holub P, Ingrisch J, Schmidt IK, Kesic L, Klem K, Kröel‐Dulay G, Larsen KS, Lõhmus K, Mänd P, Orbán I, Orlovic S, Peñuelas J, Reinthaler D, Radujković D, Schuchardt M, Schweiger JM, Stojnic S, Tietema A, Urban O, Vicca S, Jentsch A. Disentangling climate from soil nutrient effects on plant biomass production using a multispecies phytometer. Ecosphere 2021. [DOI: 10.1002/ecs2.3719] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Paschalis A, Fatichi S, Zscheischler J, Ciais P, Bahn M, Boysen L, Chang J, De Kauwe M, Estiarte M, Goll D, Hanson PJ, Harper AB, Hou E, Kigel J, Knapp AK, Larsen KS, Li W, Lienert S, Luo Y, Meir P, Nabel JEMS, Ogaya R, Parolari AJ, Peng C, Peñuelas J, Pongratz J, Rambal S, Schmidt IK, Shi H, Sternberg M, Tian H, Tschumi E, Ukkola A, Vicca S, Viovy N, Wang YP, Wang Z, Williams K, Wu D, Zhu Q. Rainfall manipulation experiments as simulated by terrestrial biosphere models: Where do we stand? Glob Chang Biol 2020; 26:3336-3355. [PMID: 32012402 DOI: 10.1111/gcb.15024] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Accepted: 01/22/2020] [Indexed: 06/10/2023]
Abstract
Changes in rainfall amounts and patterns have been observed and are expected to continue in the near future with potentially significant ecological and societal consequences. Modelling vegetation responses to changes in rainfall is thus crucial to project water and carbon cycles in the future. In this study, we present the results of a new model-data intercomparison project, where we tested the ability of 10 terrestrial biosphere models to reproduce the observed sensitivity of ecosystem productivity to rainfall changes at 10 sites across the globe, in nine of which, rainfall exclusion and/or irrigation experiments had been performed. The key results are as follows: (a) Inter-model variation is generally large and model agreement varies with timescales. In severely water-limited sites, models only agree on the interannual variability of evapotranspiration and to a smaller extent on gross primary productivity. In more mesic sites, model agreement for both water and carbon fluxes is typically higher on fine (daily-monthly) timescales and reduces on longer (seasonal-annual) scales. (b) Models on average overestimate the relationship between ecosystem productivity and mean rainfall amounts across sites (in space) and have a low capacity in reproducing the temporal (interannual) sensitivity of vegetation productivity to annual rainfall at a given site, even though observation uncertainty is comparable to inter-model variability. (c) Most models reproduced the sign of the observed patterns in productivity changes in rainfall manipulation experiments but had a low capacity in reproducing the observed magnitude of productivity changes. Models better reproduced the observed productivity responses due to rainfall exclusion than addition. (d) All models attribute ecosystem productivity changes to the intensity of vegetation stress and peak leaf area, whereas the impact of the change in growing season length is negligible. The relative contribution of the peak leaf area and vegetation stress intensity was highly variable among models.
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Affiliation(s)
- Athanasios Paschalis
- Department of Civil and Environmental Engineering, Imperial College London, London, UK
| | - Simone Fatichi
- Institute of Environmental Engineering, ETH Zurich, Zurich, Switzerland
| | - Jakob Zscheischler
- Climate and Environmental Physics, University of Bern, Bern, Switzerland
- Oeschger Centre for Climate Change Research, University of Bern, Bern, Switzerland
| | - Philippe Ciais
- Laboratoire des Sciences du Climat et de l'Environnement, Gif sur Yvette, France
| | - Michael Bahn
- Department of Ecology, University of Innsbruck, Innsbruck, Austria
| | - Lena Boysen
- Max Planck Institute for Meteorology, Hamburg, Germany
| | - Jinfeng Chang
- Laboratoire des Sciences du Climat et de l'Environnement, Gif sur Yvette, France
| | - Martin De Kauwe
- ARC Centre of Excellence for Climate Extremes, University of New South Wales, Sydney, NSW, Australia
| | - Marc Estiarte
- CSIC, Global Ecology Unit CREAF-CSIC-UAB, Bellaterra, Catalonia, Spain
- CREAF, Cerdanyola del Vallès, Catalonia, Spain
| | - Daniel Goll
- Laboratoire des Sciences du Climat et de l'Environnement, Gif sur Yvette, France
- Department of Geography, University of Augsburg, Augsburg, Germany
| | - Paul J Hanson
- Environmental Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA
| | - Anna B Harper
- Department of Mathematics, University of Exeter, Exeter, UK
| | - Enqing Hou
- Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ, USA
| | - Jaime Kigel
- Institute for Plant Sciences and Genetics, Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
| | - Alan K Knapp
- Graduate Degree Program in Ecology, Department of Biology, Colorado State University, Fort Collins, CO, USA
| | - Klaus S Larsen
- Department of Geosciences and Natural Resource Management, University of Copenhagen, Frederiksberg C, Denmark
| | - Wei Li
- Laboratoire des Sciences du Climat et de l'Environnement, Gif sur Yvette, France
- Ministry of Education Key Laboratory for Earth System Modeling, Department of Earth System Science, Tsinghua University, Beijing, China
| | - Sebastian Lienert
- Climate and Environmental Physics, University of Bern, Bern, Switzerland
- Oeschger Centre for Climate Change Research, University of Bern, Bern, Switzerland
| | - Yiqi Luo
- Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ, USA
| | - Patrick Meir
- Research School of Biology, Australian National University, Acton, ACT, Australia
- School of Geosciences, University of Edinburgh, Edinburgh, UK
| | | | - Romà Ogaya
- CSIC, Global Ecology Unit CREAF-CSIC-UAB, Bellaterra, Catalonia, Spain
- CREAF, Cerdanyola del Vallès, Catalonia, Spain
| | - Anthony J Parolari
- Department of Civil, Construction, and Environmental Engineering, Marquette University, Milwaukee, WI, USA
| | - Changhui Peng
- Department of Biology Sciences, University of Quebec at Montreal, Montreal, QC, Canada
| | - Josep Peñuelas
- CSIC, Global Ecology Unit CREAF-CSIC-UAB, Bellaterra, Catalonia, Spain
- CREAF, Cerdanyola del Vallès, Catalonia, Spain
| | - Julia Pongratz
- Department of Geography, Ludwig Maximilian University of Munich, Munchen, Germany
| | - Serge Rambal
- Centre d'Ecologie Fonctionnelle et Evolutive (CEFE), UMR5175, CNRS, Université de Montpellier, Université Paul-Valéry Montpellier, EPHE, Montpellier, France
| | - Inger K Schmidt
- Department of Geosciences and Natural Resource Management, University of Copenhagen, Frederiksberg C, Denmark
| | - Hao Shi
- International Center for Climate and Global Change Research, School of Forestry and Wildlife Sciences, Auburn University, Auburn, AL, USA
| | - Marcelo Sternberg
- School of Plant Sciences and Food Security, Faculty of Life Sciences, Tel Aviv University, Tel Aviv, Israel
| | - Hanqin Tian
- International Center for Climate and Global Change Research, School of Forestry and Wildlife Sciences, Auburn University, Auburn, AL, USA
| | - Elisabeth Tschumi
- Climate and Environmental Physics, University of Bern, Bern, Switzerland
- Oeschger Centre for Climate Change Research, University of Bern, Bern, Switzerland
| | - Anna Ukkola
- ARC Centre of Excellence for Climate Extremes, University of New South Wales, Sydney, NSW, Australia
| | - Sara Vicca
- Centre of Excellence PLECO (Plants and Ecosystems), Biology Department, University of Antwerp, Wilrijk, Belgium
| | - Nicolas Viovy
- Laboratoire des Sciences du Climat et de l'Environnement, Gif sur Yvette, France
| | - Ying-Ping Wang
- CSIRO Marine and Atmospheric Research and Centre for Australian Weather and Climate Research, Aspendale, Vic., Australia
| | - Zhuonan Wang
- International Center for Climate and Global Change Research, School of Forestry and Wildlife Sciences, Auburn University, Auburn, AL, USA
| | | | - Donghai Wu
- Sino-French Institute for Earth System Science, College of Urban and Environmental Sciences, Peking University, Beijing, China
| | - Qiuan Zhu
- Center for Ecological Forecasting and Global Change, College of Forestry, Northwest A&F University, Xianyang, China
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Halbritter AH, De Boeck HJ, Eycott AE, Reinsch S, Robinson DA, Vicca S, Berauer B, Christiansen CT, Estiarte M, Grünzweig JM, Gya R, Hansen K, Jentsch A, Lee H, Linder S, Marshall J, Peñuelas J, Kappel Schmidt I, Stuart‐Haëntjens E, Wilfahrt P, Vandvik V, Abrantes N, Almagro M, Althuizen IHJ, Barrio IC, te Beest M, Beier C, Beil I, Berry ZC, Birkemoe T, Bjerke JW, Blonder B, Blume‐Werry G, Bohrer G, Campos I, Cernusak LA, Chojnicki BH, Cosby BJ, Dickman LT, Djukic I, Filella I, Fuchslueger L, Gargallo‐Garriga A, Gillespie MAK, Goldsmith GR, Gough C, Halliday FW, Joar Hegland S, Hoch G, Holub P, Jaroszynska F, Johnson DM, Jones SB, Kardol P, Keizer JJ, Klem K, Konestabo HS, Kreyling J, Kröel‐Dulay G, Landhäusser SM, Larsen KS, Leblans N, Lebron I, Lehmann MM, Lembrechts JJ, Lenz A, Linstädter A, Llusià J, Macias‐Fauria M, Malyshev AV, Mänd P, Marshall M, Matheny AM, McDowell N, Meier IC, Meinzer FC, Michaletz ST, Miller ML, Muffler L, Oravec M, Ostonen I, Porcar‐Castell A, Preece C, Prentice IC, Radujković D, Ravolainen V, Ribbons R, Ruppert JC, Sack L, Sardans J, Schindlbacher A, Scoffoni C, Sigurdsson BD, Smart S, Smith SW, Soper F, Speed JDM, Sverdrup‐Thygeson A, Sydenham MAK, Taghizadeh‐Toosi A, Telford RJ, Tielbörger K, Töpper JP, Urban O, Ploeg M, Van Langenhove L, Večeřová K, Ven A, Verbruggen E, Vik U, Weigel R, Wohlgemuth T, Wood LK, Zinnert J, Zurba K. The handbook for standardized field and laboratory measurements in terrestrial climate change experiments and observational studies (ClimEx). Methods Ecol Evol 2019. [DOI: 10.1111/2041-210x.13331] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Aud H. Halbritter
- Department of Biological Sciences and Bjerknes Centre for Climate Research University of Bergen Bergen Norway
| | - Hans J. De Boeck
- Department of Biology Centre of Excellence PLECO (Plants and Ecosystems) Universiteit Antwerpen Wilrijk Belgium
| | - Amy E. Eycott
- Department of Biological Sciences University of Bergen Bergen Norway
- Faculty of Biosciences and Aquaculture Nord University Steinkjer Norway
| | - Sabine Reinsch
- Centre for Ecology & Hydrology Environment Centre Wales Bangor UK
| | | | - Sara Vicca
- Department of Biology Centre of Excellence PLECO (Plants and Ecosystems) Universiteit Antwerpen Wilrijk Belgium
| | - Bernd Berauer
- Department of Disturbance Ecology University of Bayreuth Bayreuth Germany
| | | | - Marc Estiarte
- CSIC Global Ecology Unit CREAF‐CSIC‐UAB Bellaterra Spain
- CREAF Vallès Spain
| | - José M. Grünzweig
- Institute of Plant Sciences and Genetics in Agriculture The Hebrew University of Jerusalem Rehovot Israel
| | - Ragnhild Gya
- Department of Biological Sciences and Bjerknes Centre for Climate Research University of Bergen Bergen Norway
| | - Karin Hansen
- Swedish Environmental Protection Agency Stockholm Sweden
- Swedish Environmental Research Institute IVL Stockholm Sweden
| | - Anke Jentsch
- Department of Disturbance Ecology University of Bayreuth Bayreuth Germany
| | - Hanna Lee
- NORCE Norwegian Research Centre and Bjerknes Centre for Climate Research Bergen Norway
| | - Sune Linder
- Southern Swedish Forest Research Centre Swedish University of Agricultural Sciences Alnarp Sweden
| | - John Marshall
- Department of Forest Ecology and Management Swedish University of Agricultural Sciences Umeå Sweden
| | - Josep Peñuelas
- CSIC Global Ecology Unit CREAF‐CSIC‐UAB Bellaterra Spain
- CREAF Vallès Spain
| | - Inger Kappel Schmidt
- Department of Geosciences and Natural Resource Management University of Copenhagen Frederiksberg Denmark
| | | | - Peter Wilfahrt
- Department of Disturbance Ecology University of Bayreuth Bayreuth Germany
| | - Vigdis Vandvik
- Department of Biological Sciences and Bjerknes Centre for Climate Research University of Bergen Bergen Norway
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5
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Natali SM, Watts JD, Rogers BM, Potter S, Ludwig SM, Selbmann AK, Sullivan PF, Abbott BW, Arndt KA, Birch L, Björkman MP, Bloom AA, Celis G, Christensen TR, Christiansen CT, Commane R, Cooper EJ, Crill P, Czimczik C, Davydov S, Du J, Egan JE, Elberling B, Euskirchen ES, Friborg T, Genet H, Göckede M, Goodrich JP, Grogan P, Helbig M, Jafarov EE, Jastrow JD, Kalhori AAM, Kim Y, Kimball J, Kutzbach L, Lara MJ, Larsen KS, Lee BY, Liu Z, Loranty MM, Lund M, Lupascu M, Madani N, Malhotra A, Matamala R, McFarland J, McGuire AD, Michelsen A, Minions C, Oechel WC, Olefeldt D, Parmentier FJW, Pirk N, Poulter B, Quinton W, Rezanezhad F, Risk D, Sachs T, Schaefer K, Schmidt NM, Schuur EA, Semenchuk PR, Shaver G, Sonnentag O, Starr G, Treat CC, Waldrop MP, Wang Y, Welker J, Wille C, Xu X, Zhang Z, Zhuang Q, Zona D. Large loss of CO 2 in winter observed across the northern permafrost region. Nat Clim Chang 2019; 9:852-857. [PMID: 35069807 PMCID: PMC8781060 DOI: 10.1038/s41558-019-0592-8] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Accepted: 09/04/2019] [Indexed: 05/18/2023]
Abstract
Recent warming in the Arctic, which has been amplified during the winter1-3, greatly enhances microbial decomposition of soil organic matter and subsequent release of carbon dioxide (CO2)4. However, the amount of CO2 released in winter is highly uncertain and has not been well represented by ecosystem models or by empirically-based estimates5,6. Here we synthesize regional in situ observations of CO2 flux from arctic and boreal soils to assess current and future winter carbon losses from the northern permafrost domain. We estimate a contemporary loss of 1662 Tg C yr-1 from the permafrost region during the winter season (October through April). This loss is greater than the average growing season carbon uptake for this region estimated from process models (-1032 Tg C yr-1). Extending model predictions to warmer conditions in 2100 indicates that winter CO2 emissions will increase 17% under a moderate mitigation scenario-Representative Concentration Pathway (RCP) 4.5-and 41% under business-as-usual emissions scenario-RCP 8.5. Our results provide a new baseline for winter CO2 emissions from northern terrestrial regions and indicate that enhanced soil CO2 loss due to winter warming may offset growing season carbon uptake under future climatic conditions.
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Affiliation(s)
- Susan. M. Natali
- Woods Hole Research Center, Falmouth, MA 02540, USA
- Correspondence to:
| | | | | | | | | | | | - Patrick F. Sullivan
- Environment and Natural Resources Institute, University of Alaska, Anchorage, AK 99508. USA
| | - Benjamin W. Abbott
- Brigham Young University, Department of Plant and Wildlife Sciences, Provo, UT 84602, USA
| | - Kyle A. Arndt
- Department of Biology, San Diego State University, San Diego, CA 92182, USA
| | - Leah Birch
- Woods Hole Research Center, Falmouth, MA 02540, USA
| | - Mats P. Björkman
- Department of Earth Sciences, University of Gothenburg, PO Box 460, SE-405 30 Göteborg, Sweden
| | - A. Anthony Bloom
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
| | - Gerardo Celis
- Center for Ecosystem Science and Society, Northern Arizona University, Flagstaff, AZ 86001, USA
| | - Torben R. Christensen
- Department of Bioscience, Arctic Research Centre, Aarhus University, Frederiksborgvej 399, 4000 Roskilde, Denmark
| | | | - Roisin Commane
- Dept. of Earth & Environmental Sciences of Lamont-Doherty Earth Observatory at Columbia University, Palisades, NY 10964, USA
| | - Elisabeth J. Cooper
- Department of Arctic and Marine Biology, Faculty of Biosciences, Fisheries and Economics, UiT. The Arctic University of Norway, N9037 Tromsø, Norway
| | - Patrick Crill
- Dept. of Geological Sciences and Bolin Centre for Climate Research, Stockholm University, Sweden
| | - Claudia Czimczik
- Earth System Science, University of California, Irvine, CA 92697, USA
| | - Sergey Davydov
- Northeast Science Station, Pacific Geographical Institute, Cherskii, Russia
| | - Jinyang Du
- Numerical Terradynamic Simulation Group, W.A. Franke College of Forestry & Conservation, University of Montana, Missoula, MT 59812, USA
| | - Jocelyn E. Egan
- Department of Earth Sciences, Dalhousie University, Halifax, NS, Canada
| | - Bo Elberling
- Center for Permafrost (CENPERM), Department of Geosciences and Natural Resource Management, University of Copenhagen, Øster Voldgade 10, DK-1350 Copenhagen, Denmark
| | - Eugenie S. Euskirchen
- University of Alaska Fairbanks, Institute of Arctic Biology, Fairbanks, AK 99775, USA
| | - Thomas Friborg
- Department of Geosciences and Natural Resource Management, University of Copenhagen, Denmark
| | - Hélène Genet
- University of Alaska Fairbanks, Institute of Arctic Biology, Fairbanks, AK 99775, USA
| | | | - Jordan P. Goodrich
- Department of Biology, San Diego State University, San Diego, CA 92182, USA
- Scripps Institution of Oceanography, UCSD, La Jolla, CA 92037, USA
| | - Paul Grogan
- Department of Biology, Queen’s University, Kingston, ON, Canada
| | - Manuel Helbig
- McMaster University, School of Geography and Earth Sciences, Hamilton, ON, L8S 4K1
- Université de Montréal, Département de géographie & Centre d’études nordiques, 520 chemin de la Côte Sainte Catherine, Montréal, QC H2V 2B8
| | - Elchin E. Jafarov
- Earth and Environmental Sciences Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - Julie D. Jastrow
- Environmental Science Division, Argonne National Laboratory, Argonne, IL 60439, USA
| | - Aram A. M. Kalhori
- Department of Biology, San Diego State University, San Diego, CA 92182, USA
| | - Yongwon Kim
- International Arctic Research Center, University of Alaska Fairbanks, AK 99775, USA
| | - John Kimball
- Numerical Terradynamic Simulation Group, W.A. Franke College of Forestry & Conservation, University of Montana, Missoula, MT 59812, USA
| | - Lars Kutzbach
- Institute of Soil Science, Universät Hamburg, Hamburg, Germany
| | - Mark J. Lara
- Department of Plant Biology, University of Illinois, Urbana, IL 61801, USA
| | - Klaus S. Larsen
- Department of Geosciences and Natural Resource Management, University of Copenhagen, Denmark
| | - Bang-Yong Lee
- Korea Polar Research Institute (KOPRI), Incheon 21990, Republic of Korea)
| | - Zhihua Liu
- CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China
| | | | - Magnus Lund
- Department of Bioscience, Arctic Research Centre, Aarhus University, Frederiksborgvej 399, 4000 Roskilde, Denmark
| | - Massimo Lupascu
- Department of Geography, National University of Singapore, Singapore 117570
| | - Nima Madani
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
| | - Avni Malhotra
- Department of Earth System Science, Stanford University, Stanford, CA 94305
| | - Roser Matamala
- Environmental Science Division, Argonne National Laboratory, Argonne, IL 60439, USA
| | - Jack McFarland
- Geology, Minerals, Energy, and Geophysics Science Center, U.S. Geological Survey, Menlo Park, CA 94025, USA
| | - A. David McGuire
- University of Alaska Fairbanks, Institute of Arctic Biology, Fairbanks, AK 99775, USA
| | | | | | - Walter C. Oechel
- Department of Biology, San Diego State University, San Diego, CA 92182, USA
- University of Exeter, Exeter, UK
| | - David Olefeldt
- University of Alberta, Department of Renewable Resources, Edmonton, Alberta, Canada
| | - Frans-Jan W. Parmentier
- Department of Geosciences, University of Oslo, Oslo, Norway
- Department of Physical Geography and Ecosystem Science, Lund University, Lund, Sweden
| | - Norbert Pirk
- Department of Geosciences, University of Oslo, Oslo, Norway
- Department of Physical Geography and Ecosystem Science, Lund University, Lund, Sweden
| | - Ben Poulter
- NASA GSFC, Biospheric Sciences Lab., Greenbelt, MD 20771, USA
| | | | - Fereidoun Rezanezhad
- Ecohydrology Research Group, Water Institute and Department of Earth & Environmental Sciences, University of Waterloo, 200 University Avenue West, Waterloo, ON, N2L 3G1, Canada
| | - David Risk
- St. Francis Xavier University, Antigonish, Nova Scotia, Canada
| | - Torsten Sachs
- GFZ German Research Centre for Geosciences, Telegrafenberg, Potsdam, Germany
| | - Kevin Schaefer
- National Snow and Ice Data Center, Boulder, CO 80309, USA
| | - Niels M. Schmidt
- Arctic Research Centre, Department of Bioscience, Aarhus University, Roskilde, Denmark
| | - Edward A.G. Schuur
- Center for Ecosystem Science and Society, Northern Arizona University, Flagstaff, AZ 86001, USA
| | - Philipp R. Semenchuk
- Division of Conservation Biology, Vegetation Ecology and Landscape Ecology, Department of Botany and Biodiversity Research, Rennweg 14, 1030 Vienna, Austria
| | - Gaius Shaver
- The Ecosystems Center, Marine Biological Laboratory, Woods Hole, MA 02543, USA
| | - Oliver Sonnentag
- Université de Montréal, Département de géographie & Centre d’études nordiques, 520 chemin de la Côte Sainte Catherine, Montréal, QC H2V 2B8
| | - Gregory Starr
- Department of Biological Sciences, University of Alabama, Tuscaloosa, AL 35487, USA
| | - Claire C. Treat
- Department of Environmental and Biological Science, University of Eastern Finland, Finland
| | - Mark P. Waldrop
- Geology, Minerals, Energy, and Geophysics Science Center, U.S. Geological Survey, Menlo Park, CA 94025, USA
| | - Yihui Wang
- Department of Biology, San Diego State University, San Diego, CA 92182, USA
| | - Jeffrey Welker
- Department of Biological Sciences, University of Alaska Anchorage, Anchorage, AK 99508, USA
- Ecology and Genetics Research Unit, University of Oulu, Finland and UArctic
| | - Christian Wille
- GFZ German Research Centre for Geosciences, Telegrafenberg, Potsdam, Germany
| | - Xiaofeng Xu
- Department of Biology, San Diego State University, San Diego, CA 92182, USA
| | - Zhen Zhang
- Department of Geographical Sciences, University of Maryland, College Park, MD 20742, USA
| | - Qianlai Zhuang
- Department of Earth, Atmospheric and Planetary Sciences, Purdue University, West Lafayette, IN 47907, USA
| | - Donatella Zona
- Department of Biology, San Diego State University, San Diego, CA 92182, USA
- University of Sheffield, Sheffield, UK
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6
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Crowther TW, Machmuller MB, Carey JC, Allison SD, Blair JM, Bridgham SD, Burton AJ, Dijkstra FA, Elberling B, Estiarte M, Larsen KS, Laudon H, Lupascu M, Marhan S, Mohan J, Niu S, J Peñuelas J, Schmidt IK, Templer PH, Kröel-Dulay G, Frey S, Bradford MA. Crowther et al. reply. Nature 2018; 554:E7-E8. [PMID: 29469091 DOI: 10.1038/nature25746] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- T W Crowther
- Institute of Integrative Biology, ETH Zurich, Universitätstrasse 16, 8006 Zürich, Switzerland
| | - M B Machmuller
- Natural Resource Ecology Laboratory, 1 499 Campus Delivery, Colorado State University, Fort Collins, Colorado 80523-1499, USA
| | - J C Carey
- Division of Math and Science, Babson College, Massachusetts 02457, USA
| | - S D Allison
- Department of Earth System Science, University of California Irvine, Irvine, California 92697, USA.,Department of Ecology & Evolutionary Biology, University of California Irvine, Irvine, California 92697, USA
| | - J M Blair
- Division of Biology, Kansas State University, Manhattan, Kansas 66506, USA
| | - S D Bridgham
- Institute of Ecology & Evolution, University of Oregon, Eugene, Oregon 97403, USA
| | - A J Burton
- School of Forest Resources & Environmental Science, Michigan Technological University, Houghton, Michigan 49931, USA
| | - F A Dijkstra
- Centre for Carbon, Water & Food, The University of Sydney, Camden, 2570 New South Wales, Australia
| | - B Elberling
- Center for Permafrost (CENPERM), Department of Geosciences and Natural Resource Management, University of Copenhagen, Øster Voldgade 10, 1350 Copenhagen K., Denmark
| | - M Estiarte
- CSIC, Global Ecology Unit CREAF-CSIC-UAB, Cerdanyola del Vallès, 08193 Catalonia, Spain.,CREAF, Cerdanyola del Vallès, 08193 Catalonia, Spain
| | - K S Larsen
- Department of Geosciences & Natural Resource Management, University of Copenhagen, Rolighedsvej 23, 1958 Frederiksberg C, Denmark
| | - H Laudon
- Department of Forest Ecology & Management, Swedish University of Agricultural Sciences, 90183 Umeå, Sweden
| | - M Lupascu
- Department of Geography, National University of Singapore, 1 Arts Link, 117570, Singapore
| | - S Marhan
- Institute of Soil Science & Land Evaluation, University of Hohenheim, 70593 Stuttgart, Germany
| | - J Mohan
- Odum School of Ecology, University of Georgia, Athens, Georgia 30601, USA
| | - S Niu
- Key Laboratory of Ecosystem Network Observation & Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China
| | - J J Peñuelas
- CSIC, Global Ecology Unit CREAF-CSIC-UAB, Cerdanyola del Vallès, 08193 Catalonia, Spain.,CREAF, Cerdanyola del Vallès, 08193 Catalonia, Spain
| | - I K Schmidt
- Department of Geosciences & Natural Resource Management, University of Copenhagen, Rolighedsvej 23, 1958 Frederiksberg C, Denmark
| | - P H Templer
- Department of Ecology & Evolutionary Biology, University of California Irvine, Irvine, California 92697, USA
| | - G Kröel-Dulay
- Institute of Ecology & Botany, MTA Centre for Ecological Research, 2-4. Alkotmany U., Vacratot, 2163-Hungary
| | - S Frey
- Department of Natural Resources & the Environment, University of New Hampshire, Durham, New Hampshire 03824, USA
| | - M A Bradford
- School of Forestry & Environmental Studies, Yale University, 195 Prospect Street, New Haven, Connecticut 06511, USA
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7
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Bataillon T, Galtier N, Bernard A, Cryer N, Faivre N, Santoni S, Severac D, Mikkelsen TN, Larsen KS, Beier C, Sørensen JG, Holmstrup M, Ehlers BK. A replicated climate change field experiment reveals rapid evolutionary response in an ecologically important soil invertebrate. Glob Chang Biol 2016; 22:2370-2379. [PMID: 27109012 PMCID: PMC5021122 DOI: 10.1111/gcb.13293] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2015] [Revised: 01/15/2016] [Accepted: 02/17/2016] [Indexed: 06/05/2023]
Abstract
Whether species can respond evolutionarily to current climate change is crucial for the persistence of many species. Yet, very few studies have examined genetic responses to climate change in manipulated experiments carried out in natural field conditions. We examined the evolutionary response to climate change in a common annelid worm using a controlled replicated experiment where climatic conditions were manipulated in a natural setting. Analyzing the transcribed genome of 15 local populations, we found that about 12% of the genetic polymorphisms exhibit differences in allele frequencies associated to changes in soil temperature and soil moisture. This shows an evolutionary response to realistic climate change happening over short-time scale, and calls for incorporating evolution into models predicting future response of species to climate change. It also shows that designed climate change experiments coupled with genome sequencing offer great potential to test for the occurrence (or lack) of an evolutionary response.
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Affiliation(s)
- Thomas Bataillon
- Bioinformatics Research Center (BiRC)Aarhus UniversityC.F. Møllers Allé 8, Building 11108000Aarhus CDenmark
| | - Nicolas Galtier
- CNRS UMR 5554Institut des Sciences de l'Evolution de MontpellierUniversité Montpellier 234095 Montpellier Cedex 05France
| | - Aurelien Bernard
- CNRS UMR 5554Institut des Sciences de l'Evolution de MontpellierUniversité Montpellier 234095 Montpellier Cedex 05France
| | - Nicolai Cryer
- Bioinformatics Research Center (BiRC)Aarhus UniversityC.F. Møllers Allé 8, Building 11108000Aarhus CDenmark
| | - Nicolas Faivre
- CNRS UMR 5554Institut des Sciences de l'Evolution de MontpellierUniversité Montpellier 234095 Montpellier Cedex 05France
| | | | - Dany Severac
- c/o Institut de Génomique FonctionnelleMGX‐Montpellier GenomiX34094 Montpellier Cedex 05France
| | - Teis N. Mikkelsen
- Department of Chemical and Biochemical EngineeringEcosystems CentreTechnical University of Denmark2800Kgs. LyngbyDenmark
| | - Klaus S. Larsen
- Department for Geosciences and Natural Resource ManagementUniversity of CopenhagenRolighedsvej 23DK‐1958FrederiksbergDenmark
| | - Claus Beier
- Department for Geosciences and Natural Resource ManagementUniversity of CopenhagenRolighedsvej 23DK‐1958FrederiksbergDenmark
- Centre for Catchments and Urban Water ResearchNorwegian Institute for Water Research (NIVA)Gaustadalléen 210349OsloNorway
| | - Jesper G. Sørensen
- Department of BioscienceAarhus UniversityNy Munkegade 1168000Aarhus CDenmark
| | - Martin Holmstrup
- Department of BioscienceAarhus UniversityVejlsøvej 258600SilkeborgDenmark
| | - Bodil K. Ehlers
- Department of BioscienceAarhus UniversityVejlsøvej 258600SilkeborgDenmark
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8
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Dieleman WIJ, Vicca S, Dijkstra FA, Hagedorn F, Hovenden MJ, Larsen KS, Morgan JA, Volder A, Beier C, Dukes JS, King J, Leuzinger S, Linder S, Luo Y, Oren R, De Angelis P, Tingey D, Hoosbeek MR, Janssens IA. Simple additive effects are rare: a quantitative review of plant biomass and soil process responses to combined manipulations of CO2 and temperature. Glob Chang Biol 2012; 18:2681-93. [PMID: 24501048 DOI: 10.1111/j.1365-2486.2012.02745.x] [Citation(s) in RCA: 99] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2012] [Accepted: 03/25/2012] [Indexed: 05/08/2023]
Abstract
In recent years, increased awareness of the potential interactions between rising atmospheric CO2 concentrations ([ CO2 ]) and temperature has illustrated the importance of multifactorial ecosystem manipulation experiments for validating Earth System models. To address the urgent need for increased understanding of responses in multifactorial experiments, this article synthesizes how ecosystem productivity and soil processes respond to combined warming and [ CO2 ] manipulation, and compares it with those obtained in single factor [ CO2 ] and temperature manipulation experiments. Across all combined elevated [ CO2 ] and warming experiments, biomass production and soil respiration were typically enhanced. Responses to the combined treatment were more similar to those in the [ CO2 ]-only treatment than to those in the warming-only treatment. In contrast to warming-only experiments, both the combined and the [ CO2 ]-only treatments elicited larger stimulation of fine root biomass than of aboveground biomass, consistently stimulated soil respiration, and decreased foliar nitrogen (N) concentration. Nonetheless, mineral N availability declined less in the combined treatment than in the [ CO2 ]-only treatment, possibly due to the warming-induced acceleration of decomposition, implying that progressive nitrogen limitation (PNL) may not occur as commonly as anticipated from single factor [ CO2 ] treatment studies. Responses of total plant biomass, especially of aboveground biomass, revealed antagonistic interactions between elevated [ CO2 ] and warming, i.e. the response to the combined treatment was usually less-than-additive. This implies that productivity projections might be overestimated when models are parameterized based on single factor responses. Our results highlight the need for more (and especially more long-term) multifactor manipulation experiments. Because single factor CO2 responses often dominated over warming responses in the combined treatments, our results also suggest that projected responses to future global warming in Earth System models should not be parameterized using single factor warming experiments.
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Affiliation(s)
- Wouter I J Dieleman
- Research Group of Plant and Vegetation Ecology, Department of Biology, University of Antwerp, Wilrijk, B-2610, Belgium; School of Earth and Environmental Sciences, Faculty of Science and Engineering, James Cook University, Smithfield, 4878, QLD, Australia
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9
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Larsen KS, Michelsen A, Jonasson S, Beier C, Grogan P. Nitrogen Uptake During Fall, Winter and Spring Differs Among Plant Functional Groups in a Subarctic Heath Ecosystem. Ecosystems 2012. [DOI: 10.1007/s10021-012-9555-x] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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10
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Larsen KS, Siggurdsson H, Mencke N. Efficacy of imidacloprid, imidacloprid/permethrin and phoxim for flea control in the Mustelidae (ferrets, mink). Parasitol Res 2009; 97 Suppl 1:S107-S112. [PMID: 16228265 DOI: 10.1007/s00436-005-1453-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Farmed mink (Mustela vison), a close relative of the domestic ferret (Mustela putorius furo), naturally infested with the squirrel flea (Ceratophyllus sciurorum) were included in a study to investigate three compounds for flea control. The test products were imidacloprid in a 10% (w/v) solution, an imidacloprid 10% (w/v)/permethrin 50% (w/v) solution, and phoxim; all three are well-known compounds for the control of different ectoparasites in a wide range of animals. Two groups of mink received 0.1 ml per animal of the imidacloprid or the imidacloprid/permethrin combination at days 0 and 28, respectively. Two groups of mink were sprayed with 25 ml of a 0.1% phoxim solution at day 0 and either 1x25 ml or 2x25 ml, respectively, of a 0.05% phoxim solution at day 28. One group of mink served as an untreated control. At assessment on day 56 the efficacy was 91.9% in the imidacloprid group, 89.3% in the imidacloprid/permethrin group, 92.2% in the phoxim 1x25-ml group and 99.3% in the phoxim 2x25 ml group, respectively. In the untreated control group an average of 757 fleas per mink nesting material was recorded.
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Affiliation(s)
| | | | - N Mencke
- Bayer HealthCare AG, Animal Health Division, 51368, Leverkusen, Germany.
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11
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Larsen KS, Nielsen NR, Gronbask M, Andersen PK, Olsen J, Andersen AMN. Binge Drinking of Alcohol and Risk of Fetal Death. Am J Epidemiol 2006. [DOI: 10.1093/aje/163.suppl_11.s53-d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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12
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Mencke N, Larsen KS, Eydal M, Sigurethsson H. Dermatological and parasitological evaluation of infestations with chewing lice (Werneckiella equi) on horses and treatment using imidacloprid. Parasitol Res 2005; 97:7-12. [PMID: 15940520 DOI: 10.1007/s00436-005-1379-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2005] [Accepted: 03/31/2005] [Indexed: 11/29/2022]
Abstract
Lice infestations in horses caused by the chewing louse Werneckiella (Damalinia) equi are observed worldwide. In the present study, the efficacy of 10% imidacloprid was tested on horses naturally infested with lice. Two groups of animals received a double application of 4 ml and 8 ml Advantage 10% spot-on on day 0 and 28 either. Horses, presenting dermatological signs with negative lice counts, were also included in this investigation. 40.86% of the horses presented positive lice counts and 84.21% of these animals showed clinical dermatologic signs. 65.45% of the lice-negative horses also showed clinical manifestations. Two days after treatment, lice counts dropped in both the treatment groups and on day 56, all animals were free of alive lice, and dermatological lesions decreased significantly (P<0.001) in both the lice-positive and the negative animals. No correlation (P>0.050) between lice burden and clinical signs was detected.
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Affiliation(s)
- N Mencke
- Bayer HealthCareAG, Animal Health Division, 51368 Leverkusen, Germany.
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13
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Larsen KS, Eydal M, Mencke N, Sigurdsson H. Infestation of Werneckiella equi on Icelandic horses, characteristics of predilection sites and lice dermatitis. Parasitol Res 2005; 96:398-401. [PMID: 15940519 DOI: 10.1007/s00436-005-1380-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2005] [Accepted: 03/31/2005] [Indexed: 11/26/2022]
Abstract
Lice infestations on horses caused by the lice Werneckiella (Damalinia) equi and Haematopinus equi are observed worldwide. In this study, the distribution and clinical manifestations of lice on Icelandic horses were examined. Thirty-eight out of 93 animals (40.86%) were identified as infested with W. equi. Sixty-eight animals (73.12%) presented dermatological lesions associated with lice infestation, while only 32 of these animals presented lice. Six animals had no clinical signs although of being lice-positive, and 19 animals (20.43%) showed neither lice nor clinical manifestations. Lice burdens varied from animal to animal, and clinical manifestations occurred at all levels of infestation. Focal alopecia was the main clinical sign (83.78%) on lice-positive horses, while scaling and crusts occurred in 10.81% and 9.68% of the cases, respectively. Clinical signs present in the head and the neck/mane area were found to be an indication of lice infestation in horses.
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Mencke N, Larsen KS, Eydal M, Sigurdsson H. Natural infestation of the chewing lice (Werneckiella equi) on horses and treatment with imidacloprid and phoxim. Parasitol Res 2004; 94:367-70. [PMID: 15549385 DOI: 10.1007/s00436-004-1227-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2004] [Accepted: 09/02/2004] [Indexed: 11/30/2022]
Abstract
Infestation with the chewing louse (Werneckiella (Damalinia) equi) can be found on horses world-wide. Louse infestations, including clinical signs of louse-derived dermatitis, are known from Icelandic horses. A clinical field investigation was conducted in Iceland using horses with natural louse infestations to evaluate the efficacy of imidacloprid in a 10% solution in comparison with phoxim in a 0.05% solution. A total of 27 horses received a single imidacloprid treatment using 16 ml of the 10% solution along the mane and on the dorso-lateral trunk. A further 43 horses were treated twice, 14 days apart, with phoxim, using 2 x 50 ml solution applied along the mane and the dorso-lateral trunk. At the final evaluation on day 28, complete control of the lice was obtained for the imidacloprid treated horses and only a single moribund louse was found on two horses treated with phoxim.
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Affiliation(s)
- N Mencke
- Animal Health Division, Bayer Health Care AG, 51368 Leverkusen, Germany.
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15
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Stanneck D, Larsen KS, Mencke N. Pyriproxyfen concentration in the coat of cats and dogs after topical treatment with a 1.0% w/v spot-on formulation. J Vet Pharmacol Ther 2003; 26:233-5. [PMID: 12755908 DOI: 10.1046/j.1365-2885.2003.00467.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- D Stanneck
- Bayer AG, BG-Animal Health, Leverkusen, Germany
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16
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Mears S, Clark F, Greenwood M, Larsen KS. Host location, survival and fecundity of the Oriental rat flea Xenopsylla cheopis (Siphonaptera: Pulicidae) in relation to black rat Rattus rattus (Rodentia: Muridae) host age and sex. Bull Entomol Res 2002; 92:375-384. [PMID: 12241563 DOI: 10.1079/ber2002184] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Host choice and fecundity are two factors that may contribute to the variation in flea counts observed when assessing the potential risk of flea-borne transmission of pathogens from rodents to humans. Using the black rat, Rattus rattus Linnaeus, as host the effects of age and sex on host choice and fecundity of the Oriental rat flea, Xenopsylla cheopis Rothschild, were examined experimentally at 25 degrees C and 80% rh. During the first two days of emergence from cocoons, female fleas dominated the sex ratio by 4:1 but from the third day onwards this switched to a male-dominated sex ratio of 4:1. The sex of the flea did not influence their host-seeking behaviour. Newly emerged fleas of both sexes were not influenced by the rat's presence and at seven days old both sexes demonstrated similar levels of attraction toward the rat host. The sex of the rat did not affect flea host-seeking behaviour. There was a 50-70% decline in the initial number of adult fleas during the first week after their release onto a rat host, and this decline was greatest on juvenile rats. Flea fecundity was also significantly lower on juvenile rat hosts but no differences due to the sex of the rat were observed. This experimental study supports the hypothesis that differences in flea count due to host sex, reported in field surveys, result from sexual differences in host behaviour and not from discriminatory host-seeking behaviour by X. cheopis. Differences in flea count due to host age may be affected by differences in X. cheopis fecundity, which may itself be mediated by host behaviour such as grooming.
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Affiliation(s)
- S Mears
- Department of Biology, University of Leicester, University Road, Leicester, LE1 7RH, UK.
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17
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Leirs H, Larsen KS, Lodal J. Palatability and toxicity of fipronil as a systemic insecticide in a bromadiolone rodenticide bait for rat and flea control. Med Vet Entomol 2001; 15:299-303. [PMID: 11583448 DOI: 10.1046/j.0269-283x.2001.00302.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Vector control in plague-infested areas requires a simultaneous killing of rodents and their fleas. We investigated the efficacy of a combination of a systemic insecticide, fipronil, in a rodenticide bait formulation under laboratory conditions. Four different concentrations of fipronil (0.05%, 0.005%, 0.0005% with acetone as a solvent, and 0.05% with propylene glycol as a solvent) and two controls (solvents only) were combined with the rodenticide bait (crushed organically grown wheat with 0.005% bromadiolone). Each concentration was offered together with an untreated non-poisonous challenge bait to 10 singly caged Rattus rattus L., each with 100 rat fleas Xenopsylla cheopis Rothschild (Siphonaptera: Pulicidae) in the nest. Treated bait consumption was relatively low and an unsatisfactory rat mortality of around 50% only was obtained in all tests. The palatability of the bait, however, was not affected by the fipronil concentration. Even at the lowest fipronil concentration, average flea mortality was still above 95%, and doses of more than I mg fipronil per kg rat body weight gave a nearly complete kill of fleas. Fipronil can be highly effective as a systemic insecticide to for flea control, provided that a more attractive bait base for roof rats is used.
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Affiliation(s)
- H Leirs
- Danish Pest Infestation Laboratory, Lyngby.
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18
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Rasmussen AM, Larsen KS. [Head lice]. Ugeskr Laeger 1998; 160:6057-60. [PMID: 9800507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
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Clark F, Deadman D, Greenwood M, Larsen KS. A circadian rhythm of locomotor activity in newly emerged Ceratophyllus sciurorum. Med Vet Entomol 1997; 11:213-216. [PMID: 9330251 DOI: 10.1111/j.1365-2915.1997.tb00398.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Circadian rhythm in newly emerged individuals of the Red Squirrel (Scuirus vulgaris) flea C.s.sciurorum was studied in a constant environment, using an insect activity monitor. Trials were run over 7 days using two start times (08.00 and 17.00 hours). The results show that, regardless of start time, the fleas display a 24 h activity rhythm. The presence of a rhythm under constant conditions gives a strong indication that C.s.sciurorum has a self-sustaining clock which is started by disturbance and is most likely to be linked to host activity patterns.
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Affiliation(s)
- F Clark
- Department of Zoology, University of Leicester, U.K
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Maret W, Larsen KS, Vallee BL. Coordination dynamics of biological zinc "clusters" in metallothioneins and in the DNA-binding domain of the transcription factor Gal4. Proc Natl Acad Sci U S A 1997; 94:2233-7. [PMID: 9122177 PMCID: PMC20070 DOI: 10.1073/pnas.94.6.2233] [Citation(s) in RCA: 95] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
The almost universal appreciation for the importance of zinc in metabolism has been offset by the considerable uncertainty regarding the proteins that store and distribute cellular zinc. We propose that some zinc proteins with so-called zinc cluster motifs have a central role in zinc distribution, since they exhibit the rather exquisite properties of binding zinc tightly while remaining remarkably reactive as zinc donors. We have used zinc isotope exchange both to probe the coordination dynamics of zinc clusters in metallothionein, the small protein that has the highest known zinc content, and to investigate the potential function of zinc clusters in cellular zinc distribution. When mixed and incubated, metallothionein isoproteins-1 and -2 rapidly exchange zinc, as demonstrated by fast chromatographic separation and radiometric analysis. Exchange kinetics exhibit two distinct phases (k(fast) approximately 5000 min(-1) x M(-1); k(slow) approximately 200 min(-1) x M(-1), pH 8.6, 25 degrees C) that are thought to reflect exchange between the three-zinc clusters and between the four-zinc clusters, respectively. Moreover, we have observed and examined zinc exchange between metallothionein-2 and the Gal4 protein (k approximately 800 min(-1) x M(-1), pH 8.0, 25 degrees C), which is a prototype of transcription factors with a two-zinc cluster. This reaction constitutes the first experimental example of intermolecular zinc exchange between heterologous proteins. Such kinetic reactivity distinguishes zinc in biological clusters from zinc in the coordination environment of zinc enzymes, where the metal does not exchange over several days with free zinc in solution. The molecular organization of these clusters allows zinc exchange to proceed through a ligand exchange mechanism, involving molecular contact between the reactants.
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Affiliation(s)
- W Maret
- Center for Biochemical and Biophysical Sciences and Medicine, Harvard Medical School, Boston, MA 02115, USA
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Abstract
The binding of D-phenylalanine, D-Phe, to both zinc and cobalt carboxypeptidase A, ZnCPD and CoCPD, has been investigated by a combination of kinetic and spectroscopic techniques. Kinetic studies of the ZnCPD catalyzed hydrolysis of dansyl-Gly-Ala-L-Phe indicate that D-Phe inhibition occurs through a two-site sequential competitive inhibition mode with Ki values of 45 microM and 11.6 mM at pH 8.4, 1 M NaCl, 25 degrees C. Spectral titration of CoCPD under the same conditions indicates a very strong binding mode of D-Phe (KD < 100 microM) that only slightly perturbs the visible cobalt electronic transitions. However, the conversion of CoCPD.D-Phe into a CoCPD.D-Phe2 (KD, 1.13 mM) is accompanied by a very strong spectral perturbation resulting in a complex that is characterized by Amax values of 506 nm (epsilon = 27 M-1 cm-1) and 605 nm (epsilon = 17 M-1 cm-1) and a shoulder at 530 nm (epsilon = 23 M-1 cm-1). The spectral properties of this ternary complex differ markedly from that of the CoCPD.L-Phe.N3-ternary complex. X-ray absorption fine structure, XAFS, studies indicate that these differences are likely due to a more regular tetrahedral coordination sphere for the ternary azide complexes compared to an octahedral coordination geometry for the Zn and CoCPD.D-Phe2 complexes.
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Affiliation(s)
- K S Larsen
- European Molecular Biology Laboratory, Grenoble Outstation, France
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Zhang K, Chance B, Auld DS, Larsen KS, Vallee BL. X-ray absorption fine structure study of the active site of zinc and cobalt carboxypeptidase A in their solution and crystalline forms. Biochemistry 1992; 31:1159-68. [PMID: 1734963 DOI: 10.1021/bi00119a027] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A comparative study on the metal environment of Zn(II)-carboxypeptidase A (ZnCPD) and Co(II)-carboxypeptidase A (CoCPD) in their solution and crystalline forms using the X-ray absorption fine structure (XAFS) technique has been conducted. The first coordination sphere of Zn for ZnCPD in its solution state is found to consist of two distributions of atoms, with four atoms (N or O) located at an average distance of 2.03 +/- 0.01 A and one atom (N or O) located at 2.57 +/- 0.04 A. The four-atom distribution remains the same for ZnCPD in its crystalline state, but the fifth atom is found at 2.36 +/- 0.04 A. Examination of the higher coordination shell, between 2.7 and 4.2 A, reveals the presence of two imidazoles. Combined with X-ray crystallographic results, a structural model is proposed. The four atoms at an average distance of 2.03 A are assigned to the two delta 1 nitrogens of His-69 and His-196, one epsilon 1 oxygen of Glu-72, and the oxygen of a coordinated water molecule. The atom at 2.57 A for ZnCPD in solution is assigned to the epsilon 2 oxygen of Glu-72. The results for CoCPD in solution are similar with the four atoms at an average distance of 2.08 +/- 0.01 A and one atom at 2.50 +/- 0.04 A, which moves to 2.34 +/- 0.04 A in the crystalline enzyme. The intensity of the 3d "pip" peak for CoCPD is consistent with a distorted tetragonal metal geometry for the solution form of the enzyme which is converted to a more pentacoordinated metal site for the crystalline enzyme. The first shell distribution of crystalline CoCPD is quite disordered, which may be largely due to the disorder of His-69 and His-196 as indicated by higher shell analysis. Thus, the XAFS studies show that the metal coordination spheres in the zinc and cobalt enzymes are quite similar in the solution state but differ from their crystalline counterparts. The XAFS studies provide the necessary background for measurement of substrate- and inhibitor-promoted structural changes in the metal coordination sphere of the zinc and other metal-substituted carboxypeptidases in the solution state.
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Affiliation(s)
- K Zhang
- Biostructures Institute, University City Science Center, Philadelphia, Pennsylvania
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Affiliation(s)
- K S Larsen
- Department of Psychology, Oregon State University, Corvallis 97331-5303
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Abstract
The specificity of metal ion inhibition of bovine carboxypeptidase A ([(CPD)Zn]) catalysis is examined under stopped-flow conditions with use of the fluorescent peptide substrate Dns-Gly-Ala-Phe. The enzyme is inhibited competitively by Zn(II), Pb(II), and Cd(II) with apparent KI values of 2.4 x 10(-5), 4.8 x 10(-5), and 1.1 x 10(-2) M in 0.5 M NaCl at pH 7.5 and 25 degrees C. The kcat/Km value, 7.3 x 10(6) M-1 s-1, is affected less than 10% at 1 x 10(-4) M Mn(II) or Cu(II) and at 1 x 10(-2) M Co(II), Ni(II), Hg(II), or Pt(IV). Zn(II) and Pb(II) are mutually exclusive inhibitors. Previous studies of the pH dependence of Zn(II) inhibition [Larsen, K. S., & Auld, D. S. (1989) Biochemistry 28, 9620] indicated that [(CPD)Zn] is selectively inhibited by a zinc monohydroxide complex, ZnOH+, and that ionization of a ligand, LH, in the enzyme's inhibitory site (pKLH 5.8) is obligatory for its binding. The present study allows further definition of this inhibitory zinc site. The ionizable ligand (LH) is assigned to Glu-270, since specific chemical modification of this residue decreases the binding affinity of [(CPD)Zn] for Zn(II) and Pb(II) by more than 60- and 200-fold, respectively. A bridging interaction between the Glu-270-coordinated metal hydroxide and the catalytic metal ion is implicated from the ability of Zn(II) and Pb(II) to induce a perturbation in the electronic absorption spectrum of cobalt carboxypeptidase A ([(CPD)Co]).(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- K S Larsen
- Center for Biochemical and Biophysical Sciences and Medicine, Harvard Medical School, Boston, Massachusetts 02115
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Markham SM, Welling DR, Larsen KS, Snell MJ. Endometriosis of the rectum treated with a long term GnRH agonist and surgery. N Y State J Med 1991; 91:69-71. [PMID: 1900926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- S M Markham
- Department of Obstetrics and Gynecology, David Grant United States Air Force Medical Center, Travis Air Force Base, Calif
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Abstract
Limited proteolysis of carboxypeptidase A from bovine pancreas with subtilisin Carlsberg generates a stable intermediate, carboxypeptidase S, whose esterase and peptidase activities are increased and decreased, respectively, under standard assay conditions. Carboxypeptidase S was isolated by affinity chromatography. Sequence analysis shows that it is cleaved solely at the Ala154-Gly155 bond. Its enzymatic properties were determined under stopped-flow conditions with Dns-Gly-Ala-Phe and its ester analogue Dns-Gly-Ala-OPhe. For both substrates, the Km values are increased 30-40-fold. The kcat value for peptide hydrolysis is virtually unaffected whereas that for ester hydrolysis is increased 10-fold. The magnitude of the Km effect is equivalent to a loss of 9 kJ/mol of binding energy and likely reflects a disruption of the network of hydrogen bonds that links Tyr-248 and Arg-145 to the backbone carbonyls of Ala-154 and Gly-155. The difference in kcat effects for the two substrate classes is related to differences in the chemical nature of the rate-determining step. Product release is rate determining for catalytic hydrolysis of ester substrates, and hence, the increase in kcat indicates that dissociation of products is facilitated as a result of the Ala154-Gly155 bond scission. The changes in enzymatic activity accompanying limited proteolysis are due to conformational alterations in the vicinity of the active center of the molecule. The affinity of a monoclonal antibody, mAb 100, directed toward the antigenic determinant located between residues 209 and 218 in carboxypeptidase A is diminished considerably for carboxypeptidase S.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- B M Solomon
- Center for Biochemical and Biophysical Sciences and Medicine, Harvard Medical School, Boston, Massachusetts
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Abstract
This study investigated the relationship of authoritarianism and attitudes toward AIDS victims in three samples. One hundred fifty-eight students at Oregon State University participated, including 101 students from the United States, 25 from Japan, and 32 from other Asian societies. The survey instrument included the 20-item Attitudes Toward AIDS Victims (ATAV) Scale, the 18-item F Scale, the Form A, and 14-item Formal Content of Dogmatism Scale. Results showed slight but significant correlations between the ATAV and F (r = .17, p less than .044) and Formal Content of Dogmatism (r = .20, p less than .023) Scales for the United States sample. Highly significant differences were found in the predicted direction among the three samples on authoritarianism, F = 43.94, p less than .001.
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Affiliation(s)
- K S Larsen
- Department of Psychology, Oregon State University, Corvallis
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28
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Larsen KS. [Gabriel Miró and endocrinal individuality]. Asclepio 1990; 42:335-346. [PMID: 11629920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Abstract
Zinc ions competitively inhibit carboxypeptidase A from bovine pancreas. The state(s) of hydroxylation of zinc and their possible site(s) of interaction with the enzyme have been investigated by determining the strength of zinc inhibition over pH range 4.6-10.5. The inhibition kinetics were recorded under stopped-flow conditions using the alpha-Val isozyme and the peptide substrate Dns-Gly-Ala-Phe in 0.5 M NaCl at 25 degrees C. The pH dependence of pKI follows a pattern which indicates that the enzyme is selectively inhibited by zinc monohydroxide, ZnOH+ (KI = 7.1 X 10(-7) M). The formation of the inhibitory ZnOH+ complex from fully hydrated Zn2+ is characterized by an ionization constant of 9.05, and the consecutive conversion of ZnOH+ to Zn(OH)2, Zn(OH)3-, and Zn(OH)4(2-) complexes takes place with ionization constants of 9.75, 10.1, and 10.5, respectively. Ionization of a ligand, LH, in the enzyme's inhibitory site (pKLH 5.8) is obligatory for binding of the ZnOH+ complex. The enzymatic activity (kcat/Km) is influenced by three ionizable groups: pKEH2 5.78, pKEH 8.60, and pKE 10.2. Since the values of pKLH and pKEH2 are virtually identical, it is possible that the inhibitory ZnOH+ complex interacts with the group responsible for pKEH2. Previous studies have suggested that pKEH2 reflects the ionization of Glu-270 and its interaction with a water molecule coordinated to the catalytic zinc ion. It is proposed that the inhibitory zinc ion binds to the carboxylate of Glu-270 and that the inhibition process is specific for zinc monohydroxide because it allows the formation of a stabilizing hydroxide bridge between the inhibitory and catalytic zinc ions.
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Affiliation(s)
- K S Larsen
- Center for Biochemical and Biophysical Sciences and Medicine, Harvard Medical School, Boston, Massachusetts
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Larsen KS. [Head lice. The club behind my ear]. Sygeplejersken 1989; 89:8-10. [PMID: 2617439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Affiliation(s)
- K S Larsen
- a Professor in the Department of Psychology , Oregon State University , Corvallis , OR , 97331-5404
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32
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Andersen I, Larsen KS. [Lumbar disk prolapse in the elderly]. Ugeskr Laeger 1987; 149:2913-5. [PMID: 3433472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Larsen KS, Garcia D, Langenberg DR, Leroux JA. The Psychological Screening Inventory as a predictor of predisposition to suicide among patients at the Oregon State Hospital. J Clin Psychol 1983; 39:100-3. [PMID: 6826736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Examined all closed patient files for the inclusion of scores from the Psychological Screening Inventory (PSI) at the Oregon State Hospital between 1977-1979. Subsequently, the patient files (N = 123) were assessed for suicidal inclination employing five categories, which ranged from "no suicidal ideation" to "serious attempt." t-tests were completed between Ss placed in category 1 (no suicidal ideation) and remaining categories. Results yielded a significant value for "discomfort," with lower discomfort scores related to higher suicide risks. Subsequent extreme group analysis yielded significant but opposite results for males and females, which suggests the importance of evaluating the results of the PSI separately for sex.
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Larsen KS, Lancaster L, Lesh W, Redding J, White C, Larsen KS. Approval seeking, situational pressures, and the willingness to administer shock to a victim. J Soc Psychol 1976; 99:87-95. [PMID: 1271776 DOI: 10.1080/00224545.1976.9924751] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Abstract
Attitudes toward death is a subject largely overlooked by psychology. This article reports on the development of a Likert-type scale measuring attitude toward death. Item analysis produced 32 items, with a corrected split-half reliability coefficient of .92. The scale did not predict differences between donors and professors and did not relate to age, sex, or self-esteem. It did, however, correlate negatively with religiosity, level of education, and positively with exposure to deaths of non-intimate persons. The results suggest that positive attitudes toward death are indicated by a non-religious outlook, low investment in self-relevant goals, and exposure to non-intimate (and less traumatic) deaths.
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Abstract
Several emotional responses may be made to frustration depending on the type of goal frustrated. Two types of broad goals are approval and personal identity seeking. 32 male and 38 female undergraduates participated in this role-playing study. 43 Ss were oriented toward approval seeking and 27 Ss were oriented toward personal identity. Sadness was a more dominant response (104 responses) than anger (34 responses) for high approval-seeking Ss. Approval-seeking Ss also showed more rejection of other groups on the Bogardus social-distance scale. For such Ss the inhibiting effects of approval seeking may lead to the displacement of anger toward potential outgroups.
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Larsen KS. Premarital sex attitudes--a scale and some validity findings. J Soc Psychol 1973; 90:339-40. [PMID: 4725216 DOI: 10.1080/00224545.1973.9712583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Larsen KS, Coleman D, Forbes J, Johnson R. Is the subject's personality or the experimental situation a better predictor of a subject's willingness to administer shock to a victim? J Pers Soc Psychol 1972; 22:287-95. [PMID: 5047382 DOI: 10.1037/h0032876] [Citation(s) in RCA: 30] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Abstract
This study investigated the correlations between dogmatism and sociometric status as predictors of interaction in a small group ( n = 14). Results showed a positive correlation between sociometric status and various indexes of interaction and a negative correlation between dogmatism and sociometric status. The expected correlation between dogmatism and interactions did not appear.
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Schwendiman G, Larsen KS, Cope SC. Authoritarian traits as predictors of candidate preference in 1968 United States presidential election. Psychol Rep 1970; 27:629-30. [PMID: 5485536 DOI: 10.2466/pr0.1970.27.2.629] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
The literature on the relationship of authoritarianism and political behavior is complex. This study investigated the relation of candidate preference during the 1968 presidential election to scores on 4 measures of authoritarianism. A survey was administered to a random sample of 141 male and 141 female undergraduates. Significant differences between Wallace supporters and supporters of other candidates on 3 of the 4 measures indicate that general authoritarianism, in addition to right-wing authoritarianism, is predictive of candidate preference. Sex differences were reported on only one of the 4 assessments, and age correlated inversely with all measures.
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Abstract
Welfare clients occupy a position of low desirability, whereas college students, by reason of familial ties or prospective future contribution, occupy a position of high desirability. Significant differences were obtained between these two groups on self-esteem and length of time on welfare was a significant factor in welfare clients' self-esteem.
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46
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Abstract
The traits underlying the authoritarian syndrome suggest that high-authoritarian Ss are insecure and low in self esteem. The present study investigated this hypothesis employing several independent assessments of self esteem. Results tended to confirm this hypothesis but showed only moderate relationships among the several measures of self esteem.
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47
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Abstract
Task and socio-emotional functions are specialized in many groups. The critical variable seems to be the extent to which the task goals are salient to all group members and consequently viewed as legitimate. The tasks in service fraternities and sororities are likely to be accepted by all members, since a condition for membership is a desire to serve. This study investigated the task and socio-emotional functions in eight such fraternities and sororities (N of 169). Significant correlations obtained between sociometric choice for real leader and actual leadership, between sociometric choice for real leader and best-liked person, and between best-liked person and assessment of task activity. Results suggest that role differentiation is a function of task legitimacy and consequently the legitimacy of leadership itself.
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48
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49
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Abstract
A questionnaire composed of an authoritarian measure and two assessments of attitudes toward police was administered to 103 Ss. Large positive correlations obtained between authoritarianism and attitudes toward police. This relationship may be partially explained as a function of high authoritarian S's insecurity, as a result of which the police become a mediating force in an otherwise threatening environment. No sex differences were observed, but age was correlated inversely with both authoritarianism and attitudes toward police.
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