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Volumn 9, Issue 6, 2012, Pages 1997-2012

Differential long-term effects of climate change and management on stocks and distribution of soil organic carbon in productive grasslands

Author keywords

[No Author keywords available]

Indexed keywords

BIOACCUMULATION; BIOLOGICAL PRODUCTION; CARBON SEQUESTRATION; CLIMATE CHANGE; CLIMATE EFFECT; FERTILIZER APPLICATION; GRASSLAND; LONG-TERM CHANGE; NUMERICAL MODEL; SOIL DEPTH; SOIL MANAGEMENT; SOIL ORGANIC MATTER; SOIL PROFILE;

EID: 84861947753     PISSN: 17264170     EISSN: 17264189     Source Type: Journal    
DOI: 10.5194/bg-9-1997-2012     Document Type: Article
Times cited : (13)

References (49)
  • 1
    • 1342309584 scopus 로고    scopus 로고
    • Plant community mediated vs. nutritional controls on litter decomposition rates in grasslands
    • Aerts, R., De Caluwe, H., and Beltman, B.: Plant community mediated vs. nutritional controls on litter decomposition rates in grasslands, Ecology, 84, 1398-3208, 2003.
    • (2003) Ecology , vol.84 , pp. 1398-3208
    • Aerts, R.1    De Caluwe, H.2    Beltman, B.3
  • 2
    • 21244483526 scopus 로고    scopus 로고
    • 2 enrichment, N fertilization and plant species
    • DOI 10.1111/j.1365-3040.2005.01331.x
    • Aeschlimann, U., Nösberger, J., Edwards, T. J., Schneider, M. K., Richer, M., and Blum, H.: Responses of net ecosystem CO2 exchange in managed grassland to long-term CO2 enrichment, N fertilization and plant species, Plant Cell Environ., 28, 823-833, 2005. (Pubitemid 40886091)
    • (2005) Plant, Cell and Environment , vol.28 , Issue.7 , pp. 823-833
    • Aeschlimann, U.1    Nosberger, J.2    Edwards, P.J.3    Schneider, M.K.4    Richter, M.5    Blum, H.6
  • 3
    • 0038529684 scopus 로고    scopus 로고
    • 2 Enrichment (FACE)
    • DOI 10.1046/j.1365-3040.2003.01007.x
    • Ainsworth, E. A., Davey, P. A., Hymus, G. J., Osborne, C. E., Rogers, A., Blum, H., Nosberger, J., and Long, S. E.: Is stimulation of leaf photosynthesis by elevated carbon dioxide concentration maintained in the long term? A test with Lolium perenne grown for 10 years at two nitrogen fertilization levels under Free Air CO2 Enrichment (FACE), Plant Cell and Environ., 26, 705-714, 2003. (Pubitemid 36631987)
    • (2003) Plant, Cell and Environment , vol.26 , Issue.5 , pp. 705-714
    • Ainsworth, E.A.1    Davey, P.A.2    Hymus, G.J.3    Osborne, C.P.4    Rogers, A.5    Blum, H.6    Nosberger, J.7    Long, S.P.8
  • 4
    • 33847334405 scopus 로고    scopus 로고
    • The carbon budget of newly established temperate grassland depends on management intensity
    • DOI 10.1016/j.agee.2006.12.002, PII S0167880906004300, The Greenhouse Gas Balance of Grasslands in Europe
    • Ammann, C., Flechard, C. R., Leifeld, J., Neftel, A., and Fuhrer, J.: The carbon budget of newly established grassland depends on management intensity, Agric. Ecosyst. Environ., 121, 5-20, 2007. (Pubitemid 46329729)
    • (2007) Agriculture, Ecosystems and Environment , vol.121 , Issue.1-2 , pp. 5-20
    • Ammann, C.1    Flechard, C.R.2    Leifeld, J.3    Neftel, A.4    Fuhrer, J.5
  • 5
    • 67749109779 scopus 로고    scopus 로고
    • Assessment of the nitrogen and carbon budget of two managed temperate grassland fields
    • Ammann, C., Spirig, C., Leifeld, J., and Neftel, A.: Assessment of the nitrogen and carbon budget of two managed temperate grassland fields, Agric. Ecosyst. Environ., 133, 150-162, 2009.
    • (2009) Agric. Ecosyst. Environ. , vol.133 , pp. 150-162
    • Ammann, C.1    Spirig, C.2    Leifeld, J.3    Neftel, A.4
  • 6
    • 0030825349 scopus 로고    scopus 로고
    • 2 enrichment and temperature increase on the carbon balance of a temperate grass sward
    • Casella, E. and Soussana, J.-F.: Long-term effects of CO2 enrichment and temperature increase on the carbon balance of a temperate grass sward, J. Exp. Bot., 48, 1309-1321, 1997. (Pubitemid 27324596)
    • (1997) Journal of Experimental Botany , vol.48 , Issue.311 , pp. 1309-1321
    • Casella, E.1    Soussana, J.-F.2
  • 7
    • 0000524452 scopus 로고
    • The mineral nutrition of wild plants
    • Chapin, F. S.: The mineral nutrition of wild plants, Ann. Rev. Ecol. Syst., 11, 233-260, 1980.
    • (1980) Ann. Rev. Ecol. Syst. , vol.11 , pp. 233-260
    • Chapin, F.S.1
  • 8
    • 34248168039 scopus 로고    scopus 로고
    • A summary of the PRUDENCE model projections of changes in European climate by the end of this century
    • DOI 10.1007/s10584-006-9210-7, Prediction of Regional Scenarios and Uncertainties for Defining European Climate Change Risks and Effects: The PRUDENCE Project
    • Christensen, J. H. and Christensen, O. B.: A summary of the PRUDENCE model projections of changes in European climate by the end of this century, Clim. Change, 81, 7-30, 2007. (Pubitemid 46716673)
    • (2007) Climatic Change , vol.81 , Issue.SUPPL. 1 , pp. 7-30
    • Christensen, J.H.1    Christensen, O.B.2
  • 9
    • 0035065678 scopus 로고    scopus 로고
    • Grassland management and conversion into grassland: Effects on soil carbon
    • Conant, R. T., Paustian, K., and Elliot, E. T.: Grassland management and conversion into grassland: effects on soil Carbon, Ecol. Appl., 11, 343-355, 2001. (Pubitemid 32276727)
    • (2001) Ecological Applications , vol.11 , Issue.2 , pp. 343-355
    • Conant, R.T.1    Paustian, K.2    Elliott, E.T.3
  • 10
    • 79955426473 scopus 로고    scopus 로고
    • Measuring and monitoring soil organic carbon stocks in agricultural lands for climate mitigation
    • Conant, R. T., Ogle, S. M., Paul, E. A., and Paustian, K.: Measuring and monitoring soil organic carbon stocks in agricultural lands for climate mitigation, Front Ecol. Environ., 9, 169-173, 2011.
    • (2011) Front Ecol. Environ. , vol.9 , pp. 169-173
    • Conant, R.T.1    Ogle, S.M.2    Paul, E.A.3    Paustian, K.4
  • 11
    • 77049097395 scopus 로고    scopus 로고
    • Linking carbon and nitrogen mineralization with microbial responses to substrate availability -The DECONIT model
    • De Bruijn, A. M. G. and Butterbach-Bahl, K.: Linking carbon and nitrogen mineralization with microbial responses to substrate availability -the DECONIT model, Plant Soil, 328, 271-290, 2010.
    • (2010) Plant Soil , vol.328 , pp. 271-290
    • De Bruijn, A.M.G.1    Butterbach-Bahl, K.2
  • 13
    • 79951813011 scopus 로고    scopus 로고
    • Seasonal patterns of belowground biomass and productivity in mountain grasslands in the Pyrenees
    • Garcia-Pausas, J., Casals, P., Romanyà, J., Vallecillo, S., and Sebastià, M.-T.: Seasonal patterns of belowground biomass and productivity in mountain grasslands in the Pyrenees, Plant Soil, 340, 315-326, 2011.
    • (2011) Plant Soil , vol.340 , pp. 315-326
    • Garcia-Pausas, J.1    Casals, P.2    Romanyà, J.3    Vallecillo, S.4    Sebastià, M.-T.5
  • 14
    • 0000501647 scopus 로고
    • An empirical mathematical model to describe plant root systems
    • Gerwitz, A. and Page, E. R.: An empirical mathematical model to describe plant root systems, J. Appl. Ecol., 11, 773-782, 1974.
    • (1974) J. Appl. Ecol. , vol.11 , pp. 773-782
    • Gerwitz, A.1    Page, E.R.2
  • 15
    • 0025658106 scopus 로고
    • Determination of soil water evaporation and transpiration from energy balance and stem flow measurements
    • Ham, J., Heilman, J. L., and Lascano, R. J.: Determination of soil water evaporation and transpiration from energy balance and stem flow measurements, Agric. For. Met., 52, 287-301, 1990.
    • (1990) Agric. For. Met. , vol.52 , pp. 287-301
    • Ham, J.1    Heilman, J.L.2    Lascano, R.J.3
  • 16
    • 0012433558 scopus 로고    scopus 로고
    • Below-ground and above-ground production of vegetational organic matter along a climosequence in alpine grasslands
    • DOI 10.1002/1522-2624(200 108)164:4<389::AI D-JPLN389>3.0.CO;2-A
    • Hitz, C., Egli, M., and Fitze, P.: Below-ground and above-ground production of vegetational organic matter along a climosequence in alpine grasslands, J. Plant Nutr. Soil Sci., 164, 389-397, 2001. (Pubitemid 33622584)
    • (2001) Journal of Plant Nutrition and Soil Science , vol.164 , Issue.4 , pp. 389-397
    • Hitz, C.1    Egli, M.2    Fitze, P.3
  • 17
    • 0003579206 scopus 로고    scopus 로고
    • IPCC Intergovernmental Panel on Climate Change Cambridge, UK, Cambridge University Press
    • IPCC Intergovernmental Panel on Climate Change: Land use, landuse change and forestry, Cambridge, UK, Cambridge University Press, 2000.
    • (2000) Land Use, Landuse Change and Forestry
  • 18
    • 36549072572 scopus 로고    scopus 로고
    • IPCC: Climate Change 2007 Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, edited by: Solomon, S., Qin D., Manning, M., Chen, Z., Marquis, M., Averyt, K. B., Tignor, M., and Miller, H. L., Cambridge University Press, Cambridge, UK and New York, NY, USA
    • IPCC: Climate Change 2007: The Physical Science Basis, Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, edited by: Solomon, S., Qin, D., Manning, M., Chen, Z., Marquis, M., Averyt, K. B., Tignor, M., and Miller, H. L., Cambridge University Press, Cambridge, UK and New York, NY, USA, 996 pp., 2007.
    • (2007) The Physical Science Basis , pp. 996
  • 19
    • 0025731995 scopus 로고
    • 2 emissions from soil in response to global warming
    • Jenkinson, D. S., Adams, D. E., and Wild, A.: Model estimates of CO2 emissions from soil in response to global warming, Nature, 351, 304-306, 1991. (Pubitemid 21896583)
    • (1991) Nature , vol.351 , Issue.6324 , pp. 304-306
    • Jenkinson, D.S.1    Adams, D.E.2    Wild, A.3
  • 20
    • 33646549896 scopus 로고    scopus 로고
    • Carbon sequestration in a temperate grassland; management and climatic controls
    • DOI 10.1111/j.1365-2850.2006.00898.x
    • Jones, S. K., Rees, R. M., Kosmas, D., Ball, B. C., and Skiba, U. M.: Carbon sequestration in a temperate grassland: management and climatic controls, Soil Use and Manage., 22, 132-142, 2006. (Pubitemid 43725605)
    • (2006) Soil Use and Management , vol.22 , Issue.2 , pp. 132-142
    • Jones, S.K.1    Rees, R.M.2    Kosmas, D.3    Ball, B.C.4    Skiba, U.M.5
  • 21
    • 0345215185 scopus 로고    scopus 로고
    • Temperature dependence of organic matter decomposition: A critical review using literature data analyzed with different models
    • DOI 10.1007/s003740050430
    • Kätterer, T., Reichstein, M., Andrén, O., Lomander, A., and Andrén, O.: Temperature dependence of organic matter decomposition: a critical review using literature data analyzed with different models, Biol Fertil Soils, 27, 258-262, 1998. (Pubitemid 28382095)
    • (1998) Biology and Fertility of Soils , vol.27 , Issue.3 , pp. 258-262
    • Katterer, T.1    Reichstein, M.2    Andren, O.3    Lomander, A.4
  • 23
    • 0036242922 scopus 로고    scopus 로고
    • Root life spans of four grass species from habitats differing in nutrient availability
    • DOI 10.1046/j.1365-2435.2002.00611.x
    • Krift, T. A. J. van der and Berendse, F.: Root life spans of four grass species from habitats differing in nutrient availability, Funct. Ecol., 16, 198-203, 2002. (Pubitemid 34455386)
    • (2002) Functional Ecology , vol.16 , Issue.2 , pp. 198-203
    • Van Der Krift, T.A.J.1    Berendse, F.2
  • 24
    • 33750967938 scopus 로고    scopus 로고
    • Comparative greenhouse gas emission intensities from irrigated and dryland agricultural activities in Canada
    • Kulshreshtha, S. and Sobool, D.: Comparative Greenhouse Gas Emission Intensities from Irrigated and Dryland Agricultural Activities in Canada, Canadian Water Res. J., 31, 157-172, 2006. (Pubitemid 44744593)
    • (2006) Canadian Water Resources Journal , vol.31 , Issue.3 , pp. 157-172
    • Kulshreshtha, S.1    Sobool, D.2
  • 25
    • 33847189243 scopus 로고    scopus 로고
    • Carbon management in agricultural soils
    • Lal, R.: Carbon management in agricultural soils, Mitig. Adapt. Strat. Global Change, 12, 303-322, 2006.
    • (2006) Mitig. Adapt. Strat. Global Change , vol.12 , pp. 303-322
    • Lal, R.1
  • 26
    • 77954099361 scopus 로고    scopus 로고
    • Transient responses to increasing CO2 and climate change in an unfertilized grass-clover sward
    • Lazzarotto, P., Calanca, P., Semenov, M., and Fuhrer, J.: Transient responses to increasing CO2 and climate change in an unfertilized grass-clover sward, Climate Res., 41, 221-232, 2010.
    • (2010) Climate Res. , vol.41 , pp. 221-232
    • Lazzarotto, P.1    Calanca, P.2    Semenov, M.3    Fuhrer, J.4
  • 27
    • 78149305207 scopus 로고    scopus 로고
    • Organic farming and soil carbon sequestration: What do we really know about the benefits?
    • Leifeld, J. and Fuhrer, J.: Organic farming and soil carbon sequestration: What do we really know about the benefits? AMBIO, 39, 585-599, 2010.
    • (2010) AMBIO , vol.39 , pp. 585-599
    • Leifeld, J.1    Fuhrer, J.2
  • 28
    • 9644272478 scopus 로고    scopus 로고
    • Carbon stocks in Swiss agricultural soils predicted by land-use, soil characteristics, and altitude
    • DOI 10.1016/j.agee.2004.03.006, PII S016788090400129X
    • Leifeld, J., Bassin, S., and Fuhrer, J.: Carbon stocks in Swiss agricultural soils predicted by land-use, soil characteristics, and altitude, Agric. Ecosyst. Environ., 105, 255-266, 2005. (Pubitemid 39568825)
    • (2005) Agriculture, Ecosystems and Environment , vol.105 , Issue.1-2 , pp. 255-266
    • Leifeld, J.1    Bassin, S.2    Fuhrer, J.3
  • 29
    • 80053500788 scopus 로고    scopus 로고
    • A comparison of repeated soil inventory and carbon flux budget to detect soil carbon stock changes after conversion from cropland to grasslands
    • Leifeld, J., Ammann, C., Neftel, A., and Fuhrer, J.: A comparison of repeated soil inventory and carbon flux budget to detect soil carbon stock changes after conversion from cropland to grasslands, Glob. Change Biol., 17, 3366-3375, 2011.
    • (2011) Glob. Change Biol. , vol.17 , pp. 3366-3375
    • Leifeld, J.1    Ammann, C.2    Neftel, A.3    Fuhrer, J.4
  • 30
    • 0027097422 scopus 로고
    • A model of nitrous oxide evolution from soil driven by rainfall events: 1. Model structure and sensitivity
    • Li, C., Frolking, S., and Frolking, T. A.: A model of nitrous oxide evolution from soil driven by rainfall events: 1. Model structure and sensitivity, J. Geophys. Res., 97, 9759-9776, 1992. (Pubitemid 23372966)
    • (1992) Journal of Geophysical Research , vol.97 , Issue.D9 , pp. 9759-9776
    • Li, C.1    Frolking, S.2    Frolking, T.A.3
  • 31
    • 20644440205 scopus 로고    scopus 로고
    • Plant traits and functional types in response to reduced disturbance in a semi-natural grassland
    • Louault, F., Pillar, V. D., Aufrère, J., Garnier, E., and Soussana, J.: Plant traits and functional types in response to reduced disturbance in a semi-natural grassland, J. Veg. Sci., 16, 151-160, 2005. (Pubitemid 40831747)
    • (2005) Journal of Vegetation Science , vol.16 , Issue.2 , pp. 151-160
    • Louault, F.1    Pillar, V.D.2    Aufrere, J.3    Garnier, E.4    Soussana, J.-F.5
  • 32
    • 54149113888 scopus 로고    scopus 로고
    • Estimation of evaporation components in agricultural crops
    • Merta, M., Seidler, C., and Fjodorowa, T.: Estimation of evaporation components in agricultural crops, Biom. and Life Sc., 61, 280-283, 2006.
    • (2006) Biom. and Life Sc. , vol.61 , pp. 280-283
    • Merta, M.1    Seidler, C.2    Fjodorowa, T.3
  • 34
    • 0023525613 scopus 로고
    • Analysis of factors controlling soil organic matter levels in Great Plains grasslands
    • Parton, W. J., Schimel, D. S., Cole, C. V., and Ojima, D. S.: Analysis of factors controlling soil organic matter levels in Great Plains grasslands, Soil Sci. Soc. Am. J., 51, 1173-1179, 1987. (Pubitemid 19317426)
    • (1987) Soil Science Society of America Journal , vol.51 , Issue.5 , pp. 1173-1179
    • Parton, W.J.1    Schimel, D.S.2    Cole, C.V.3    Ojima, D.S.4
  • 35
    • 79957868850 scopus 로고    scopus 로고
    • Temporal dynamics of soil organic carbon after land-use change in the temperate zone -carbon response functions as a model approach
    • Poeplau, C., Don, A., Vesterdal, L., Leifeld, J., Wesemael, B. van, Schumacher, J., and Gensior, A.: Temporal dynamics of soil organic carbon after land-use change in the temperate zone -carbon response functions as a model approach, Glob. Change Biol., 17, 2415-2427, 2011.
    • (2011) Glob. Change Biol. , vol.17 , pp. 2415-2427
    • Poeplau, C.1    Don, A.2    Vesterdal, L.3    Leifeld, J.4    Van Wesemael, B.5    Schumacher, J.6    Gensior, A.7
  • 36
    • 0002173848 scopus 로고
    • On the assessment of surface heat flux and evaporation using large-scale parameters
    • Priestley, C. H. B. and Taylor, R. J.: On the assessment of surface heat flux and evaporation using large-scale parameters, Mon. Weather Rev., 100, 81-82, 1972.
    • (1972) Mon. Weather Rev. , vol.100 , pp. 81-82
    • Priestley, C.H.B.1    Taylor, R.J.2
  • 37
    • 0031931170 scopus 로고    scopus 로고
    • A pasture simulation model for dry matter production, and fluxes of carbon, nitrogen, water and energy
    • DOI 10.1016/S0304-3800(97)00110-5, PII S0304380097001105
    • Riedo, M., Grub, A., Rosset, M., and Fuhrer, J.: A pasture simulation model for dry matter production, and fluxes of carbon, nitrogen, water and energy, Ecol. Model., 105, 141-183, 1998. (Pubitemid 28107109)
    • (1998) Ecological Modelling , vol.105 , Issue.2-3 , pp. 141-183
    • Riedo, M.1    Grub, A.2    Rosset, M.3    Fuhrer, J.4
  • 38
    • 0034735658 scopus 로고    scopus 로고
    • Net primary production and carbon stocks in differently managed grasslands: Simulation of site-specific sensitivity to an increase in atmospheric CO2 and to climate change
    • Riedo, M., Gyalistras, D., and Fuhrer, J.: Net primary production and carbon stocks in differently managed grasslands: simulation of site-specific sensitivity to an increase in atmospheric CO2 and to climate change, Ecol. Model., 134, 207-227, 2000.
    • (2000) Ecol. Model. , vol.134 , pp. 207-227
    • Riedo, M.1    Gyalistras, D.2    Fuhrer, J.3
  • 39
    • 44049113511 scopus 로고
    • Influence of elevated CO2 and temperature on the photosynthesis and respiration of white clover dependent on N22 Fixation
    • Ryle, G. J. A., Weledge, J., Tewson, V., and Powell, C. E.: Influence of Elevated CO2 and Temperature on the Photosynthesis and Respiration of White Clover Dependent on N22 Fixation, Ann. Bot., 70, 213-220, 1992.
    • (1992) Ann. Bot. , vol.70 , pp. 213-220
    • Ryle, G.J.A.1    Weledge, J.2    Tewson, V.3    Powell, C.E.4
  • 40
    • 0002592469 scopus 로고
    • Some plant factors controlling evapotranspiration, Agricultural and Forest Meteorology
    • Saugier, B. and Katerji, N.: Some plant factors controlling evapotranspiration, Agricultural and Forest Meteorology, Agr. Forest Meteorol., 54, 263-277, 1991.
    • (1991) Agr. Forest Meteorol. , vol.54 , pp. 263-277
    • Saugier, B.1    Katerji, N.2
  • 41
    • 0029528128 scopus 로고
    • Terrestrial ecosystems and the carbon cycle
    • Schimel, D. S.: Terrestrial ecosystems and the carbon cycle, Glob. Change Biol., 1, 77-91, 1995. (Pubitemid 26439869)
    • (1995) Global Change Biology , vol.1 , Issue.1 , pp. 77-91
    • Schimel, D.S.1
  • 42
    • 34047118761 scopus 로고    scopus 로고
    • Development of high-resolution UKCIP02-based climate change scenarios in the UK
    • DOI 10.1016/j.agrformet.2007.02.003, PII S0168192307000615
    • Semenov, M. A.: Development of high resolution UKCIP02-based climate change scenarios in the UK, Agric. For. Meteorol., 144, 127-138, 2007. (Pubitemid 46527963)
    • (2007) Agricultural and Forest Meteorology , vol.144 , Issue.1-2 , pp. 127-138
    • Semenov, M.A.1
  • 43
    • 65849155515 scopus 로고    scopus 로고
    • AquaCrop-The FAO crop model to simulate yield response to water: I Concepts and underlying principles
    • Steduto, P., Hsiao, T. C., Raes, D., and Fereres, E.: AquaCrop-The FAO crop model to simulate yield response to water: I Concepts and underlying principles, Agron. J., 101, 426-437, 2009.
    • (2009) Agron. J. , vol.101 , pp. 426-437
    • Steduto, P.1    Hsiao, T.C.2    Raes, D.3    Fereres, E.4
  • 47
    • 0032700233 scopus 로고    scopus 로고
    • 2 concentration: A meta-analytic test of current theories and perceptions
    • DOI 10.1046/j.1365-2486.1999.00265.x
    • Wand, S. J. E., Midgley, G. F., Jones, M. H., and Curtis, P. S.: Responses of wild C4 and C3 grass (Poaceae) species to elevated atmospheric CO2 concentration: a meta-analytic test of current theories and perceptions, Glob. Change Biol., 5, 723-741, 1999. (Pubitemid 29536944)
    • (1999) Global Change Biology , vol.5 , Issue.6 , pp. 723-741
    • Wand, S.J.E.1    Midgley, G.F.2    Jones, M.H.3    Curtis, P.S.4
  • 48
    • 79952363611 scopus 로고    scopus 로고
    • Modeling the change in soil organic carbon (SOC) of grassland in response to climate change: Effects of measured versus modeled carbon pools for initializing RothC model
    • Xu, X., Liu, W., and Kiely, G.: Modeling the change in soil organic carbon (SOC) of grassland in response to climate change: effects of measured versus modeled carbon pools for initializing RothC model, Agric. Ecosyst. Environ., 140, 372-381, 2011.
    • (2011) Agric. Ecosyst. Environ. , vol.140 , pp. 372-381
    • Xu, X.1    Liu, W.2    Kiely, G.3


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