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Volumn 42, Issue 8, 2015, Pages 1514-1525

Direct long-distance dispersal best explains the bipolar distribution of Carex arctogena (Carex sect. Capituligerae, Cyperaceae)

Author keywords

Biogeography; Bipolar distribution; Capituligerae; Carex; Climatic niche; Cyperaceae; Divergence time estimation; Long distance dispersal

Indexed keywords

ARCTIC ENVIRONMENT; BIOCLIMATOLOGY; BIOGEOGRAPHICAL REGION; BOREAL KINGDOM; CONVERGENT EVOLUTION; DISJUNCT DISTRIBUTION; DISPERSAL; DIVERGENCE; GENETIC MARKER; HYPOTHESIS TESTING; MIOCENE; MOLECULAR ANALYSIS; NORTHERN HEMISPHERE; PHYLOGENETICS; PHYLOGEOGRAPHY; SEDGE; SOUTHERN HEMISPHERE; VICARIANCE;

EID: 84936985842     PISSN: 03050270     EISSN: 13652699     Source Type: Journal    
DOI: 10.1111/jbi.12521     Document Type: Article
Times cited : (25)

References (71)
  • 1
    • 0029661728 scopus 로고    scopus 로고
    • Conventional and isotopic determination of shorebird diets at an inland stopover: the importance of invertebrates and Potamogeton pectinatus tubers
    • Alexander, S.A., Hobson, K.A., Gratto-Trevor, C.L. & Diamond, A.W. (1996) Conventional and isotopic determination of shorebird diets at an inland stopover: the importance of invertebrates and Potamogeton pectinatus tubers. Canadian Journal of Zoology, 74, 1057-1068.
    • (1996) Canadian Journal of Zoology , vol.74 , pp. 1057-1068
    • Alexander, S.A.1    Hobson, K.A.2    Gratto-Trevor, C.L.3    Diamond, A.W.4
  • 2
    • 0025660961 scopus 로고
    • Some aspects of the phytogeography of Carex
    • Ball, P.W. (1990) Some aspects of the phytogeography of Carex. Canadian Journal of Botany, 68, 1462-1472.
    • (1990) Canadian Journal of Botany , vol.68 , pp. 1462-1472
    • Ball, P.W.1
  • 4
    • 0032762045 scopus 로고    scopus 로고
    • Direct amplification of the entire ITS region from poorly preserved plant material using recombinant PCR
    • Blattner, F.R. (1999) Direct amplification of the entire ITS region from poorly preserved plant material using recombinant PCR. BioTechniques, 27, 1180-1186.
    • (1999) BioTechniques , vol.27 , pp. 1180-1186
    • Blattner, F.R.1
  • 5
    • 0242307164 scopus 로고    scopus 로고
    • Glacial survival or tabula rasa? The history of North Atlantic biota revisited
    • Brochmann, C., Gabrielsen, T.M., Nordal, I., Landvik, J.Y. & Elven, R. (2003) Glacial survival or tabula rasa? The history of North Atlantic biota revisited. Taxon, 52, 417-450.
    • (2003) Taxon , vol.52 , pp. 417-450
    • Brochmann, C.1    Gabrielsen, T.M.2    Nordal, I.3    Landvik, J.Y.4    Elven, R.5
  • 8
    • 0013946171 scopus 로고
    • The biota of long-distance dispersal. I. Principles of dispersal and evolution
    • Carlquist, S. (1966) The biota of long-distance dispersal. I. Principles of dispersal and evolution. Quarterly Review of Biology, 41, 247-270.
    • (1966) Quarterly Review of Biology , vol.41 , pp. 247-270
    • Carlquist, S.1
  • 10
    • 0033771358 scopus 로고    scopus 로고
    • TCS: a computer program to estimate gene genealogies
    • Clement, M., Posada, D. & Crandall, K.A. (2000) TCS: a computer program to estimate gene genealogies. Molecular Ecology, 9, 1657-1660.
    • (2000) Molecular Ecology , vol.9 , pp. 1657-1660
    • Clement, M.1    Posada, D.2    Crandall, K.A.3
  • 13
    • 38649110663 scopus 로고    scopus 로고
    • BEAST: Bayesian evolutionary analysis by sampling trees
    • Drummond, A.J. & Rambaut, A. (2007) BEAST: Bayesian evolutionary analysis by sampling trees. BMC Evolutionary Biology, 7, 214.
    • (2007) BMC Evolutionary Biology , vol.7 , pp. 214
    • Drummond, A.J.1    Rambaut, A.2
  • 15
    • 0001336419 scopus 로고
    • Problems of the bipolar plant distribution
    • Du Rietz, G.E. (1940) Problems of the bipolar plant distribution. Acta Phytogeographica Suecica, 13, 215-282.
    • (1940) Acta Phytogeographica Suecica , vol.13 , pp. 215-282
    • Du Rietz, G.E.1
  • 16
    • 3042666256 scopus 로고    scopus 로고
    • MUSCLE: multiple sequence alignment with high accuracy and high throughput
    • Edgar, R.C. (2004) MUSCLE: multiple sequence alignment with high accuracy and high throughput. Nucleic Acids Research, 32, 1792-1797.
    • (2004) Nucleic Acids Research , vol.32 , pp. 1792-1797
    • Edgar, R.C.1
  • 18
    • 84890083054 scopus 로고    scopus 로고
    • Shifts in diversification rates and clade ages explain species richness in higher-level sedge taxa (Cyperaceae)
    • Escudero, M. & Hipp, A. (2013) Shifts in diversification rates and clade ages explain species richness in higher-level sedge taxa (Cyperaceae). American Journal of Botany, 100, 2403-2411.
    • (2013) American Journal of Botany , vol.100 , pp. 2403-2411
    • Escudero, M.1    Hipp, A.2
  • 19
    • 37349020638 scopus 로고    scopus 로고
    • Evolution in Carex L. sect. Spirostachyae (Cyperaceae): a molecular and cytogenetic approach
    • Escudero, M., Valcárcel, V., Vargas, P. & Luceño, M. (2008) Evolution in Carex L. sect. Spirostachyae (Cyperaceae): a molecular and cytogenetic approach. Organisms Diversity and Evolution, 7, 271-291.
    • (2008) Organisms Diversity and Evolution , vol.7 , pp. 271-291
    • Escudero, M.1    Valcárcel, V.2    Vargas, P.3    Luceño, M.4
  • 20
    • 75149174595 scopus 로고    scopus 로고
    • Bipolar disjunctions in Carex: long-distance dispersal, vicariance, or parallel evolution?
    • Escudero, M., Valcárcel, V., Vargas, P. & Luceño, M. (2010) Bipolar disjunctions in Carex: long-distance dispersal, vicariance, or parallel evolution? Flora, 205, 118-127.
    • (2010) Flora , vol.205 , pp. 118-127
    • Escudero, M.1    Valcárcel, V.2    Vargas, P.3    Luceño, M.4
  • 21
    • 84875518009 scopus 로고    scopus 로고
    • Selection by climatic regime and neutral evolutionary processes in holocentric chromosomes (Carex gr. laevigata: Cyperaceae): a microevolutionary approach
    • Escudero, M., Maguilla, E. & Luceño, M. (2013) Selection by climatic regime and neutral evolutionary processes in holocentric chromosomes (Carex gr. laevigata: Cyperaceae): a microevolutionary approach. Perspectives in Plant Ecology, Evolution and Systematics, 15, 118-129.
    • (2013) Perspectives in Plant Ecology, Evolution and Systematics , vol.15 , pp. 118-129
    • Escudero, M.1    Maguilla, E.2    Luceño, M.3
  • 23
    • 0027453041 scopus 로고
    • Statistical tests of neutrality of mutations
    • Fu, Y.X. & Li, W.H. (1993) Statistical tests of neutrality of mutations. Genetics, 133, 693-709.
    • (1993) Genetics , vol.133 , pp. 693-709
    • Fu, Y.X.1    Li, W.H.2
  • 24
    • 77953132627 scopus 로고    scopus 로고
    • Monophyly, phylogenetic position and the role of hybridization in Schoenoxiphium Nees (Cariceae, Cyperaceae)
    • Gehrke, B., Martín-Bravo, S., Muasya, M. & Luceño, M. (2010) Monophyly, phylogenetic position and the role of hybridization in Schoenoxiphium Nees (Cariceae, Cyperaceae). Molecular Phylogenetics and Evolution, 56, 380-392.
    • (2010) Molecular Phylogenetics and Evolution , vol.56 , pp. 380-392
    • Gehrke, B.1    Martín-Bravo, S.2    Muasya, M.3    Luceño, M.4
  • 27
    • 0030038328 scopus 로고    scopus 로고
    • Structure and macromolecular composition of the seed coat of the Musaceae
    • Graven, P., de Kroster, C.G., Boon, J.J. & Bouman, F. (1996) Structure and macromolecular composition of the seed coat of the Musaceae. Annals of Botany, 77, 105-122.
    • (1996) Annals of Botany , vol.77 , pp. 105-122
    • Graven, P.1    de Kroster, C.G.2    Boon, J.J.3    Bouman, F.4
  • 28
    • 47949083494 scopus 로고    scopus 로고
    • Molecular phylogeny and biogeography of the bipolar Euphrasia (Orobanchaceae): recent radiations in an old genus
    • Gussarova, G., Popp, M., Vitek, E. & Brochmann, C. (2008) Molecular phylogeny and biogeography of the bipolar Euphrasia (Orobanchaceae): recent radiations in an old genus. Molecular Phylogenetics and Evolution, 48, 444-460.
    • (2008) Molecular Phylogenetics and Evolution , vol.48 , pp. 444-460
    • Gussarova, G.1    Popp, M.2    Vitek, E.3    Brochmann, C.4
  • 29
    • 0036858377 scopus 로고    scopus 로고
    • Climatic flowering requirements of bipolar sedges, Carex spp., and the feasibility of their trans-equatorial migration by mountain-hopping
    • Heide, O.M. (2002) Climatic flowering requirements of bipolar sedges, Carex spp., and the feasibility of their trans-equatorial migration by mountain-hopping. Oikos, 99, 352-362.
    • (2002) Oikos , vol.99 , pp. 352-362
    • Heide, O.M.1
  • 30
    • 0006063361 scopus 로고    scopus 로고
    • Pectoral Sandpiper (Calidris melanotos)
    • A. Poole and F. Gill). Academy of Natural Sciences, Philadelphia, PA
    • Holmes, R.T. & Pitelka, F.A. (1998) Pectoral Sandpiper (Calidris melanotos). The birds of North America, No. 348 (ed. by A. Poole and F. Gill ). Academy of Natural Sciences, Philadelphia, PA.
    • (1998) The birds of North America, No. 348
    • Holmes, R.T.1    Pitelka, F.A.2
  • 31
    • 34249811509 scopus 로고    scopus 로고
    • Widespread positive selection in the photosynthetic Rubisco enzyme
    • Kapralov, M.V. & Filatov, D.A. (2007) Widespread positive selection in the photosynthetic Rubisco enzyme. BMC Evolutionary Biology, 7, 73.
    • (2007) BMC Evolutionary Biology , vol.7 , pp. 73
    • Kapralov, M.V.1    Filatov, D.A.2
  • 32
    • 0034491886 scopus 로고    scopus 로고
    • The evolution of non-coding chloroplast DNA and its application in plant systematics
    • Kelchner, S.A. (2000) The evolution of non-coding chloroplast DNA and its application in plant systematics. Annals of the Missouri Botanical Garden, 87, 482-498.
    • (2000) Annals of the Missouri Botanical Garden , vol.87 , pp. 482-498
    • Kelchner, S.A.1
  • 33
    • 65649117685 scopus 로고    scopus 로고
    • DnaSP v5: a software for comprehensive analysis of DNA polymorphism data
    • Librado, P. & Rozas, J. (2009) DnaSP v5: a software for comprehensive analysis of DNA polymorphism data. Bioinformatics, 25, 1451-1452.
    • (2009) Bioinformatics , vol.25 , pp. 1451-1452
    • Librado, P.1    Rozas, J.2
  • 36
    • 0003832533 scopus 로고    scopus 로고
    • the Flora of North America Editorial Committee). Oxford University Press, New York and Oxford
    • Murray, D.F. (2002) Flora of North America North of Mexico, Vol. 23 (ed. by the Flora of North America Editorial Committee), pp. 569-570. Oxford University Press, New York and Oxford.
    • (2002) Flora of North America North of Mexico, Vol. 23 , pp. 569-570
    • Murray, D.F.1
  • 39
    • 0022507362 scopus 로고
    • Simple methods for estimating the numbers of synonymous and nonsynonymous nucleotide substitutions
    • Nei, M. & Gojobori, T. (1986) Simple methods for estimating the numbers of synonymous and nonsynonymous nucleotide substitutions. Molecular Biology and Evolution, 3, 418-426.
    • (1986) Molecular Biology and Evolution , vol.3 , pp. 418-426
    • Nei, M.1    Gojobori, T.2
  • 40
    • 0020825204 scopus 로고
    • Maximum likelihood estimation of the number of nucleotide substitutions for restriction sites data
    • Nei, M. & Tajima, F. (1983) Maximum likelihood estimation of the number of nucleotide substitutions for restriction sites data. Genetics, 105, 207-216.
    • (1983) Genetics , vol.105 , pp. 207-216
    • Nei, M.1    Tajima, F.2
  • 41
    • 79955581898 scopus 로고    scopus 로고
    • A single Mid-Pleistocene long-distance dispersal by a bird can explain the extreme bipolar disjunction in crowberries (Empetrum)
    • Popp, M., Mirré, V. & Brochmann, C. (2011) A single Mid-Pleistocene long-distance dispersal by a bird can explain the extreme bipolar disjunction in crowberries (Empetrum). Proceedings of the National Academy of Sciences USA, 108, 6520-6525.
    • (2011) Proceedings of the National Academy of Sciences USA , vol.108 , pp. 6520-6525
    • Popp, M.1    Mirré, V.2    Brochmann, C.3
  • 42
    • 45849154165 scopus 로고    scopus 로고
    • jModelTest: phylogenetic model averaging
    • Posada, D. (2008) jModelTest: phylogenetic model averaging. Molecular Biology and Evolution, 25, 1253-1256.
    • (2008) Molecular Biology and Evolution , vol.25 , pp. 1253-1256
    • Posada, D.1
  • 43
    • 4344697865 scopus 로고    scopus 로고
    • Systematics and biology of silica bodies in monocotyledons
    • Prychid, C.J., Rudall, P.J. & Gregory, M. (2004) Systematics and biology of silica bodies in monocotyledons. Botanical Review, 69, 377-440.
    • (2004) Botanical Review , vol.69 , pp. 377-440
    • Prychid, C.J.1    Rudall, P.J.2    Gregory, M.3
  • 44
    • 84863304598 scopus 로고    scopus 로고
    • R Foundation for Statistical Computing, Vienna, Austria
    • R Development Core Team (2014) R: a language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria. Available at: http://www.r-project.org/.
    • (2014) R: a language and environment for statistical computing
  • 45
    • 77955300661 scopus 로고    scopus 로고
    • University of Edinburgh, Edinburgh, UK
    • Rambaut, A. & Drummond, A.J. (2009) Tracer v1.5. University of Edinburgh, Edinburgh, UK. Available at: http://tree.bio.ed.ac.uk/software/ tracer/.
    • (2009) Tracer v1.5
    • Rambaut, A.1    Drummond, A.J.2
  • 46
    • 0000674910 scopus 로고
    • Amphitropical relationships in the floras of North and South America
    • Raven, P.H. (1963) Amphitropical relationships in the floras of North and South America. Quarterly Review of Biology, 38, 151-177.
    • (1963) Quarterly Review of Biology , vol.38 , pp. 151-177
    • Raven, P.H.1
  • 47
    • 0032795506 scopus 로고    scopus 로고
    • Allozyme differentiation between the lowland Carex capitata and the alpine Carex arctogena (Cyperaceae) in Scandinavia
    • Reinhammar, L.G. (1999) Allozyme differentiation between the lowland Carex capitata and the alpine Carex arctogena (Cyperaceae) in Scandinavia. Biological Journal of the Linnean Society, 67, 377-389.
    • (1999) Biological Journal of the Linnean Society , vol.67 , pp. 377-389
    • Reinhammar, L.G.1
  • 48
    • 0035743504 scopus 로고    scopus 로고
    • Variation in morphological characters and habitat requirements in Carex capitata and Carex arctogena (Cyperaceae) in Norway and Sweden
    • Reinhammar, L.G. & Bele, B. (2001) Variation in morphological characters and habitat requirements in Carex capitata and Carex arctogena (Cyperaceae) in Norway and Sweden. Nordic Journal of Botany, 21, 497-512.
    • (2001) Nordic Journal of Botany , vol.21 , pp. 497-512
    • Reinhammar, L.G.1    Bele, B.2
  • 49
    • 70350280178 scopus 로고    scopus 로고
    • Size-correction and principal components for interspecific comparative studies
    • Revell, L.J. (2009) Size-correction and principal components for interspecific comparative studies. Evolution, 63, 3258-3268.
    • (2009) Evolution , vol.63 , pp. 3258-3268
    • Revell, L.J.1
  • 50
    • 0025593976 scopus 로고
    • Evolution in sedges (Carex, Cyperaceae)
    • Reznicek, A.A. (1990) Evolution in sedges (Carex, Cyperaceae). Canadian Journal of Botany, 68, 1409-1432.
    • (1990) Canadian Journal of Botany , vol.68 , pp. 1409-1432
    • Reznicek, A.A.1
  • 52
    • 0003952546 scopus 로고
    • Monograph No. 6. Canada Department of Agriculture Research Branch, Ottawa, Canada
    • Savile, D.B.O. (1972) Arctic adaptations in plants. Monograph No. 6. Canada Department of Agriculture Research Branch, Ottawa, Canada.
    • (1972) Arctic adaptations in plants
    • Savile, D.B.O.1
  • 54
    • 0024228666 scopus 로고
    • Plate tectonic reconstructions of the Cretaceous and Cenozoic ocean basins
    • Scotese, C.R., Gahagan, L.M. & Larson, R.L. (1988) Plate tectonic reconstructions of the Cretaceous and Cenozoic ocean basins. Tectonophysics, 155, 27-48.
    • (1988) Tectonophysics , vol.155 , pp. 27-48
    • Scotese, C.R.1    Gahagan, L.M.2    Larson, R.L.3
  • 57
    • 0000166413 scopus 로고
    • Origins of Australasian tropicalpine and alpine floras
    • B.A. Barlow). CSIRO Publishing, Melbourne
    • Smith, J.M.B. (1986) Origins of Australasian tropicalpine and alpine floras. Flora and fauna of alpine Australasia: ages and origins (ed. by B.A. Barlow ), pp. 109-128. CSIRO Publishing, Melbourne.
    • (1986) Flora and fauna of alpine Australasia: ages and origins , pp. 109-128
    • Smith, J.M.B.1
  • 58
    • 33750403801 scopus 로고    scopus 로고
    • RAxML-VI-HPC: maximum likelihood-based phylogenetic analyses with thousands of taxa and mixed models
    • Stamatakis, A. (2006) RAxML-VI-HPC: maximum likelihood-based phylogenetic analyses with thousands of taxa and mixed models. Bioinformatics, 22, 2688-2690.
    • (2006) Bioinformatics , vol.22 , pp. 2688-2690
    • Stamatakis, A.1
  • 59
    • 61349199503 scopus 로고    scopus 로고
    • Phylogeny and evolution in Cariceae (Cyperaceae): current knowledge and future directions
    • Starr, J.R. & Ford, B.A. (2009) Phylogeny and evolution in Cariceae (Cyperaceae): current knowledge and future directions. Botanical Review, 75, 110-137.
    • (2009) Botanical Review , vol.75 , pp. 110-137
    • Starr, J.R.1    Ford, B.A.2
  • 60
    • 65349160947 scopus 로고    scopus 로고
    • Plant DNA barcodes and species resolution in sedges (Carex, Cyperaceae
    • Starr, J.R., Naczi, R.F.C. & Chouinard, B.N. (2009) Plant DNA barcodes and species resolution in sedges (Carex, Cyperaceae). Molecular Ecology Resources, 9 (Suppl. S1), 151-163.
    • (2009) Molecular Ecology Resources , vol.9 , pp. 151-163
    • Starr, J.R.1    Naczi, R.F.C.2    Chouinard, B.N.3
  • 61
    • 84886102011 scopus 로고    scopus 로고
    • The genetic causes of convergent evolution
    • Stern, D.L. (2013) The genetic causes of convergent evolution. Nature Reviews Genetics, 14, 751-764.
    • (2013) Nature Reviews Genetics , vol.14 , pp. 751-764
    • Stern, D.L.1
  • 62
    • 0024313579 scopus 로고
    • Statistical method for testing the neutral mutation hypothesis by DNA polymorphism
    • Tajima, F. (1989) Statistical method for testing the neutral mutation hypothesis by DNA polymorphism. Genetics, 123, 585-595.
    • (1989) Genetics , vol.123 , pp. 585-595
    • Tajima, F.1
  • 63
    • 34547781750 scopus 로고    scopus 로고
    • MEGA4: Molecular Evolutionary Genetics Analysis (MEGA) software version 4
    • Tamura, K., Dudley, J., Nei, M. & Kumar, S. (2007) MEGA4: Molecular Evolutionary Genetics Analysis (MEGA) software version 4. Molecular Biology and Evolution, 24, 1596-1599.
    • (2007) Molecular Biology and Evolution , vol.24 , pp. 1596-1599
    • Tamura, K.1    Dudley, J.2    Nei, M.3    Kumar, S.4
  • 64
    • 34748821810 scopus 로고    scopus 로고
    • Plant invasion across space and time: factors affecting nonindigenous species success during four stages of invasion
    • Theoharides, K.A. & Dukes, J.S. (2007) Plant invasion across space and time: factors affecting nonindigenous species success during four stages of invasion. New Phytologist, 176, 256-273.
    • (2007) New Phytologist , vol.176 , pp. 256-273
    • Theoharides, K.A.1    Dukes, J.S.2
  • 65
    • 0013340157 scopus 로고    scopus 로고
    • Lesser Yellowlegs (Tringa flavipes)
    • ed. by A. Poole and F. Gill). The Birds of North America, Philadelphia, PA.
    • Tibbitts, T.L. & Moskoff, W. (1999) Lesser Yellowlegs (Tringa flavipes). The birds of North America, No. 427 (ed. by A. Poole and F. Gill ). The Birds of North America, Philadelphia, PA.
    • (1999) The birds of North America, No. 427
    • Tibbitts, T.L.1    Moskoff, W.2
  • 67
    • 33646707266 scopus 로고    scopus 로고
    • Genetic variation, taxonomy and mountain-hopping of four bipolar Carex species (Cyperaceae) analysed by AFLP fingerprinting
    • Vollan, K., Heide, O.M., Lye, K.A. & Heun, M. (2006) Genetic variation, taxonomy and mountain-hopping of four bipolar Carex species (Cyperaceae) analysed by AFLP fingerprinting. Australian Journal of Botany, 54, 305-313.
    • (2006) Australian Journal of Botany , vol.54 , pp. 305-313
    • Vollan, K.1    Heide, O.M.2    Lye, K.A.3    Heun, M.4
  • 68
    • 80054827870 scopus 로고    scopus 로고
    • Competitive exclusion: phylogeography's 'elephant in the room'?
    • Waters, J.M. (2011) Competitive exclusion: phylogeography's 'elephant in the room'? Molecular Ecology, 20, 4388-4394.
    • (2011) Molecular Ecology , vol.20 , pp. 4388-4394
    • Waters, J.M.1
  • 69
    • 0024196390 scopus 로고
    • Fruit-eating birds and bird-dispersed plants in the tropics and temperate zone
    • Wheelwright, N.T. (1988) Fruit-eating birds and bird-dispersed plants in the tropics and temperate zone. Trends in Ecology and Evolution, 3, 270-274.
    • (1988) Trends in Ecology and Evolution , vol.3 , pp. 270-274
    • Wheelwright, N.T.1
  • 70
    • 0000432452 scopus 로고
    • Amplification and direct sequencing of fungal ribosomal RNA genes for phylogenetics
    • M. Innis, D. Gelfand, D. Sninsky and T. White). Academic Press, Orlando, FL
    • White, T.J., Bruns, T., Lee, S. & Taylor, J. (1990) Amplification and direct sequencing of fungal ribosomal RNA genes for phylogenetics. PCR protocols: a guide to methods and applications (ed. by M. Innis, D. Gelfand, D. Sninsky and T. White ), pp. 315-322. Academic Press, Orlando, FL.
    • (1990) PCR protocols: a guide to methods and applications , pp. 315-322
    • White, T.J.1    Bruns, T.2    Lee, S.3    Taylor, J.4


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