{"id":"https://openalex.org/W2000698762","doi":"https://doi.org/10.1002/oa.659","title":"What do stable isotopes tell us about hominid dietary and ecological niches in the pliocene?","display_name":"What do stable isotopes tell us about hominid dietary and ecological niches in the pliocene?","publication_year":2003,"publication_date":"2003-01-01","ids":{"openalex":"https://openalex.org/W2000698762","doi":"https://doi.org/10.1002/oa.659","mag":"2000698762"},"language":"en","primary_location":{"id":"doi:10.1002/oa.659","doi":"https://doi.org/10.1002/oa.659","is_oa":false,"landing_page_url":"https://doi.org/10.1002/oa.659","pdf_url":null,"source":{"id":"https://openalex.org/S138209933","display_name":"International Journal of Osteoarchaeology","issn_l":"1047-482X","issn":["1047-482X","1099-1212"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-class-a","anvur-scientific","cwts-core","erih-plus","jufo-2","ki-jl-1","norway-1","poland-140","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320595","host_organization_name":"Wiley","host_organization_lineage":["https://openalex.org/P4310320595"],"host_organization_lineage_names":["Wiley"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"International Journal of Osteoarchaeology","raw_type":"journal-article"},"volume":null,"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5040652620","display_name":"Julia A. Lee\u2010Thorp","orcid":"https://orcid.org/0000-0002-3291-0258","observed_orcids":["https://orcid.org/0000-0002-3291-0258"]},"institutions":[{"id":"https://openalex.org/I157614274","display_name":"University of Cape Town","ror":"https://ror.org/03p74gp79","country_code":"ZA","type":"education","lineage":["https://openalex.org/I157614274"]}],"countries":["ZA"],"is_corresponding":true,"raw_author_name":"J. A. Lee\u2010Thorp","raw_affiliation_strings":["Department of Archaeology, University of Cape Town, Private Bag, Rondebosch, South Africa"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Archaeology, University of Cape Town, Private Bag, Rondebosch, South Africa","institution_ids":["https://openalex.org/I157614274"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5014597602","display_name":"Matt Sponheimer","orcid":"https://orcid.org/0000-0002-8743-1123","observed_orcids":["https://orcid.org/0000-0002-8743-1123"]},"institutions":[{"id":"https://openalex.org/I223532165","display_name":"University of Utah","ror":"https://ror.org/03r0ha626","country_code":"US","type":"education","lineage":["https://openalex.org/I223532165"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"M. Sponheimer","raw_affiliation_strings":["Departments of Biology and Geology and Geophysics, University of Utah, Salt Lake City, Utah, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Departments of Biology and Geology and Geophysics, University of Utah, Salt Lake City, Utah, USA","institution_ids":["https://openalex.org/I223532165"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5027044036","display_name":"Nikolaas J. van der Merwe","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I157614274","display_name":"University of Cape Town","ror":"https://ror.org/03p74gp79","country_code":"ZA","type":"education","lineage":["https://openalex.org/I157614274"]}],"countries":["ZA"],"is_corresponding":false,"raw_author_name":"N. J. van der Merwe","raw_affiliation_strings":["Department of Archaeology, University of Cape Town, Private Bag, Rondebosch, South Africa"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Archaeology, University of Cape Town, Private Bag, Rondebosch, South Africa","institution_ids":["https://openalex.org/I157614274"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5040652620"],"corresponding_institution_ids":["https://openalex.org/I157614274"],"apc_list":{"value":4220,"currency":"USD","value_usd":4220},"apc_paid":null,"fwci":22.8709,"has_fulltext":false,"cited_by_count":82,"citation_normalized_percentile":{"value":0.9911426,"is_in_top_1_percent":true,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":99},"biblio":{"volume":"13","issue":"1-2","first_page":"104","last_page":"113"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10421","display_name":"Pleistocene-Era Hominins and Archaeology","score":0.951200008392334,"subfield":{"id":"https://openalex.org/subfields/3314","display_name":"Anthropology"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},"topics":[{"id":"https://openalex.org/T10421","display_name":"Pleistocene-Era Hominins and Archaeology","score":0.951200008392334,"subfield":{"id":"https://openalex.org/subfields/3314","display_name":"Anthropology"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T10087","display_name":"Archaeology and ancient environmental studies","score":0.027400000020861626,"subfield":{"id":"https://openalex.org/subfields/1911","display_name":"Paleontology"},"field":{"id":"https://openalex.org/fields/19","display_name":"Earth and Planetary Sciences"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12073","display_name":"Isotope Analysis in Ecology","score":0.008700000122189522,"subfield":{"id":"https://openalex.org/subfields/2303","display_name":"Ecology"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/ecological-niche","display_name":"ecological niche","score":0.6489999890327454},{"id":"https://openalex.org/keywords/stable-isotopes","display_name":"stable isotopes","score":0.7979999780654907},{"id":"https://openalex.org/keywords/dental-enamel","display_name":"dental enamel","score":0.6629999876022339},{"id":"https://openalex.org/keywords/c4-plants","display_name":"C4 plants","score":0.5979999899864197},{"id":"https://openalex.org/keywords/grassland-utilization","display_name":"grassland use","score":0.6809999942779541},{"id":"https://openalex.org/keywords/plio-pleistocene-hominids","display_name":"Plio-Pleistocene hominids","score":0.8920000195503235},{"id":"https://openalex.org/keywords/south-africa","display_name":"South Africa","score":0.5260000228881836},{"id":"https://openalex.org/keywords/sr-ca","display_name":"Sr/Ca","score":0.7570000290870667},{"id":"https://openalex.org/keywords/swartkrans","display_name":"Swartkrans","score":0.8140000104904175},{"id":"https://openalex.org/keywords/oxygen-isotopes","display_name":"oxygen isotopes","score":0.8820000290870667},{"id":"https://openalex.org/keywords/suidae","display_name":"Suidae","score":0.5220000147819519},{"id":"https://openalex.org/keywords/omnivory","display_name":"omnivory","score":0.6710000038146973},{"id":"https://openalex.org/keywords/paleoenvironmental-change","display_name":"paleoenvironmental change","score":0.6520000100135803},{"id":"https://openalex.org/keywords/grassland-expansion","display_name":"grassland expansion","score":0.38600000739097595}],"concepts":[{"id":"https://openalex.org/C203174812","wikidata":"https://www.wikidata.org/wiki/Q3241565","display_name":"Woodland","level":2,"score":0.7049464583396912},{"id":"https://openalex.org/C102715595","wikidata":"https://www.wikidata.org/wiki/Q172861","display_name":"Ecological niche","level":3,"score":0.648195207118988},{"id":"https://openalex.org/C125471540","wikidata":"https://www.wikidata.org/wiki/Q104021","display_name":"Fauna","level":2,"score":0.6457774639129639},{"id":"https://openalex.org/C18903297","wikidata":"https://www.wikidata.org/wiki/Q7150","display_name":"Ecology","level":1,"score":0.614651083946228},{"id":"https://openalex.org/C2775835988","wikidata":"https://www.wikidata.org/wiki/Q1006733","display_name":"Grassland","level":2,"score":0.53891521692276},{"id":"https://openalex.org/C22117777","wikidata":"https://www.wikidata.org/wiki/Q17148629","display_name":"Stable isotope ratio","level":2,"score":0.4947924017906189},{"id":"https://openalex.org/C51813073","wikidata":"https://www.wikidata.org/wiki/Q518459","display_name":"Isotope analysis","level":2,"score":0.47869589924812317},{"id":"https://openalex.org/C13474642","wikidata":"https://www.wikidata.org/wiki/Q43806","display_name":"Invertebrate","level":2,"score":0.45396456122398376},{"id":"https://openalex.org/C53570757","wikidata":"https://www.wikidata.org/wiki/Q25546","display_name":"Pleistocene","level":2,"score":0.453612357378006},{"id":"https://openalex.org/C137581210","wikidata":"https://www.wikidata.org/wiki/Q1325627","display_name":"Isotopes of strontium","level":3,"score":0.4502524435520172},{"id":"https://openalex.org/C2781291010","wikidata":"https://www.wikidata.org/wiki/Q178580","display_name":"Period (music)","level":2,"score":0.43365493416786194},{"id":"https://openalex.org/C71468253","wikidata":"https://www.wikidata.org/wiki/Q785643","display_name":"Isotopes of oxygen","level":2,"score":0.43303272128105164},{"id":"https://openalex.org/C46325548","wikidata":"https://www.wikidata.org/wiki/Q59099","display_name":"Herbivore","level":2,"score":0.4323533773422241},{"id":"https://openalex.org/C185059815","wikidata":"https://www.wikidata.org/wiki/Q471790","display_name":"Isotopes of carbon","level":3,"score":0.4149782657623291},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.37033703923225403},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.3376333713531494},{"id":"https://openalex.org/C151730666","wikidata":"https://www.wikidata.org/wiki/Q7205","display_name":"Paleontology","level":1,"score":0.23880267143249512},{"id":"https://openalex.org/C518915863","wikidata":"https://www.wikidata.org/wiki/Q938","display_name":"Strontium","level":2,"score":0.228131502866745},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.22657299041748047},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.12730607390403748},{"id":"https://openalex.org/C158787203","wikidata":"https://www.wikidata.org/wiki/Q900291","display_name":"Total organic carbon","level":2,"score":0.1213233470916748},{"id":"https://openalex.org/C185933670","wikidata":"https://www.wikidata.org/wiki/Q52105","display_name":"Habitat","level":2,"score":0.1137460470199585},{"id":"https://openalex.org/C178790620","wikidata":"https://www.wikidata.org/wiki/Q11351","display_name":"Organic chemistry","level":1,"score":0.0},{"id":"https://openalex.org/C17409809","wikidata":"https://www.wikidata.org/wiki/Q161764","display_name":"Geochemistry","level":1,"score":0.0},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0},{"id":"https://openalex.org/C24890656","wikidata":"https://www.wikidata.org/wiki/Q82811","display_name":"Acoustics","level":1,"score":0.0},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1002/oa.659","doi":"https://doi.org/10.1002/oa.659","is_oa":false,"landing_page_url":"https://doi.org/10.1002/oa.659","pdf_url":null,"source":{"id":"https://openalex.org/S138209933","display_name":"International Journal of Osteoarchaeology","issn_l":"1047-482X","issn":["1047-482X","1099-1212"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-class-a","anvur-scientific","cwts-core","erih-plus","jufo-2","ki-jl-1","norway-1","poland-140","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320595","host_organization_name":"Wiley","host_organization_lineage":["https://openalex.org/P4310320595"],"host_organization_lineage_names":["Wiley"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"International Journal of Osteoarchaeology","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"sustainable_development_goals_aurora":[{"id":"https://metadata.un.org/sdg/15","display_name":"Life on land","score":0.5699999928474426}],"study_designs":[],"awards":[],"funders":[{"id":"https://openalex.org/F4320306076","display_name":"National Science Foundation","ror":"https://ror.org/021nxhr62"},{"id":"https://openalex.org/F4320320671","display_name":"National Research Foundation","ror":"https://ror.org/05s0g1g46"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":67,"referenced_works":["https://openalex.org/W53328196","https://openalex.org/W83044693","https://openalex.org/W113379176","https://openalex.org/W632591906","https://openalex.org/W1166516370","https://openalex.org/W1500972223","https://openalex.org/W1964548238","https://openalex.org/W1966884839","https://openalex.org/W1971490401","https://openalex.org/W1976394493","https://openalex.org/W1977451978","https://openalex.org/W1978418580","https://openalex.org/W1979451027","https://openalex.org/W1979873952","https://openalex.org/W1984041809","https://openalex.org/W1988354507","https://openalex.org/W1988378253","https://openalex.org/W1992191444","https://openalex.org/W1993741408","https://openalex.org/W1996703361","https://openalex.org/W2000122817","https://openalex.org/W2000837916","https://openalex.org/W2003441748","https://openalex.org/W2007089297","https://openalex.org/W2011467602","https://openalex.org/W2012332021","https://openalex.org/W2012514549","https://openalex.org/W2016306620","https://openalex.org/W2018551006","https://openalex.org/W2019607514","https://openalex.org/W2019908571","https://openalex.org/W2028282871","https://openalex.org/W2029191165","https://openalex.org/W2031568231","https://openalex.org/W2044224958","https://openalex.org/W2050091086","https://openalex.org/W2053736750","https://openalex.org/W2055944026","https://openalex.org/W2056280624","https://openalex.org/W2069993759","https://openalex.org/W2078867506","https://openalex.org/W2081962176","https://openalex.org/W2085594621","https://openalex.org/W2092012402","https://openalex.org/W2092259570","https://openalex.org/W2096090600","https://openalex.org/W2118295415","https://openalex.org/W2128839315","https://openalex.org/W2156815657","https://openalex.org/W2161221033","https://openalex.org/W2171022590","https://openalex.org/W2280361956","https://openalex.org/W2282070633","https://openalex.org/W2315604105","https://openalex.org/W2325221466","https://openalex.org/W2328527260","https://openalex.org/W2487731140","https://openalex.org/W2508829286","https://openalex.org/W2600581963","https://openalex.org/W2741039822","https://openalex.org/W2800279279","https://openalex.org/W2979235472","https://openalex.org/W3045269279","https://openalex.org/W3045336276","https://openalex.org/W3143403784","https://openalex.org/W4254547492","https://openalex.org/W4300292127"],"related_works":["https://openalex.org/W7097410792","https://openalex.org/W2161853771","https://openalex.org/W4388335333","https://openalex.org/W2024684733","https://openalex.org/W7095557418","https://openalex.org/W2029186499","https://openalex.org/W2225339083","https://openalex.org/W2190924555","https://openalex.org/W2120708239","https://openalex.org/W7098876603"],"abstract_inverted_index":{"Abstract":[0],"By":[1],"now":[2],"a":[3,56,61,64],"reasonable":[4],"set":[5],"of":[6,31,58,95,157],"carbon":[7],"and":[8,23,33,107,152],"oxygen":[9,136],"isotope":[10,82,137],"data":[11],"from":[12,73],"tooth":[13],"enamel":[14],"has":[15],"been":[16,123],"accumulated":[17],"for":[18,55,139],"South":[19],"African":[20],"Plio\u2010Pleistocene":[21],"hominids":[22,141],"associated":[24,145],"fauna.":[25],"Almost":[26],"all":[27,140],"individuals":[28,43],"measured,":[29],"independent":[30],"species":[32],"importantly,":[34],"environment,":[35],"show":[36,147],"significant":[37],"C4":[38,47],"dietary":[39],"inputs":[40],"with":[41,52,149,170],"some":[42],"showing":[44],"very":[45],"substantial":[46],"inputs.":[48],"This":[49],"implies":[50],"interactions":[51],"grassy":[53,79],"environments":[54,68],"period":[57,65],"well":[59],"over":[60],"million":[62],"years,":[63],"that":[66],"saw":[67],"in":[69,142],"southern":[70],"Africa":[71],"shift":[72],"closed":[74],"woodlands":[75],"to":[76,87,144],"more":[77],"open,":[78],"landscapes.":[80],"Carbon":[81],"analysis":[83],"alone":[84],"is":[85,173],"unable":[86],"permit":[88],"the":[89,155],"important":[90],"distinction":[91],"between":[92],"direct":[93],"consumption":[94,99],"grasses,":[96],"or":[97],"indirect":[98],"via":[100],"grass\u2010eating":[101],"animals,":[102],"such":[103],"as":[104,125,161],"small":[105],"vertebrates":[106],"invertebrates.":[108],"Other":[109],"chemical":[110],"tools":[111],"provide":[112],"ambiguous":[113],"results.":[114],"For":[115],"instance,":[116],"hominid":[117,168],"strontium/calcium":[118],"distributions":[119],"at":[120],"Swartkrans":[121],"have":[122],"interpreted":[124],"supporting":[126],"omnivory,":[127],"but":[128,154],"other":[129],"explanations":[130],"are":[131,160],"equally":[132],"plausible.":[133],"Relatively":[134],"low":[135],"values":[138],"comparison":[143],"fauna":[146],"similarities":[148,159],"suids,":[150],"monkeys":[151],"carnivores,":[153],"causes":[156],"these":[158],"yet":[162],"poorly":[163],"understood.":[164],"On":[165],"present":[166],"evidence":[167],"interaction":[169],"grassland":[171],"foods":[172],"secure":[174],"although":[175],"their":[176],"exact":[177],"nature":[178],"remains":[179],"elusive.":[180],"Copyright":[181],"\u00a9":[182],"2003":[183],"John":[184],"Wiley":[185],"&":[186],"Sons,":[187],"Ltd.":[188]},"counts_by_year":[{"year":2026,"cited_by_count":3},{"year":2025,"cited_by_count":4},{"year":2023,"cited_by_count":1},{"year":2022,"cited_by_count":1},{"year":2021,"cited_by_count":2},{"year":2020,"cited_by_count":1},{"year":2019,"cited_by_count":5},{"year":2018,"cited_by_count":4},{"year":2016,"cited_by_count":1},{"year":2015,"cited_by_count":5},{"year":2014,"cited_by_count":5},{"year":2013,"cited_by_count":7},{"year":2012,"cited_by_count":7}],"updated_date":"2026-10-16T09:59:22.235173","created_date":"2016-06-24T00:00:00"}
