{"id":"https://openalex.org/W3085414","doi":null,"title":"Using sterol biomarkers in paleoecological studies","display_name":"Using sterol biomarkers in paleoecological studies","publication_year":2005,"publication_date":"2005-01-01","ids":{"openalex":"https://openalex.org/W3085414","mag":"3085414"},"language":"en","primary_location":{"id":"pmh:oai:https://spectrum.library.concordia.ca:8465","doi":null,"is_oa":false,"landing_page_url":"https://spectrum.library.concordia.ca/8465/1/MR10208.pdf","pdf_url":"https://spectrum.library.concordia.ca/8465/1/MR10208.pdf","source":{"id":"https://openalex.org/S4306400871","display_name":"Spectrum Research Repository (Concordia University)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I60158472","host_organization_name":"Concordia University","host_organization_lineage":["https://openalex.org/I60158472"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"Thesis"},"volume":null,"type":"dissertation","is_traditional":true,"indexed_in":[],"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/A5069314093","display_name":"Maggy Mouradian","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"Maggy Mouradian","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":["https://openalex.org/A5069314093"],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10109","display_name":"Paleontology and Stratigraphy of Fossils","score":0.635699987411499,"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"}},"topics":[{"id":"https://openalex.org/T10109","display_name":"Paleontology and Stratigraphy of Fossils","score":0.635699987411499,"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/T10032","display_name":"Marine Plankton and Biogeochemistry","score":0.21089999377727509,"subfield":{"id":"https://openalex.org/subfields/1910","display_name":"Oceanography"},"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/T10017","display_name":"Geology and Paleoclimatology Research","score":0.0794999971985817,"subfield":{"id":"https://openalex.org/subfields/1902","display_name":"Atmospheric Science"},"field":{"id":"https://openalex.org/fields/19","display_name":"Earth and Planetary Sciences"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/sterol-biomarkers","display_name":"sterol biomarkers","score":0.9760000109672546},{"id":"https://openalex.org/keywords/dinoflagellate-cysts","display_name":"dinoflagellate cysts","score":0.9319999814033508},{"id":"https://openalex.org/keywords/dinosterol","display_name":"dinosterol","score":0.9020000100135803},{"id":"https://openalex.org/keywords/marine-sediments","display_name":"marine sediment","score":0.8289999961853027},{"id":"https://openalex.org/keywords/sedimentary-organic-matter","display_name":"sediment organic matter","score":0.6240000128746033},{"id":"https://openalex.org/keywords/sterol-degradation","display_name":"sterol degradation","score":0.5839999914169312},{"id":"https://openalex.org/keywords/cholesterol","display_name":"cholesterol","score":0.4860000014305115},{"id":"https://openalex.org/keywords/stigmasterol","display_name":"stigmasterol","score":0.9240000247955322},{"id":"https://openalex.org/keywords/brassicasterol","display_name":"brassicasterol","score":0.9089999794960022},{"id":"https://openalex.org/keywords/paleoecology","display_name":"paleoecology","score":0.9089999794960022},{"id":"https://openalex.org/keywords/pacific-ocean","display_name":"Pacific Ocean","score":0.7990000247955322}],"concepts":[{"id":"https://openalex.org/C2780204098","wikidata":"https://www.wikidata.org/wiki/Q120490","display_name":"Dinoflagellate","level":2,"score":0.8765034675598145},{"id":"https://openalex.org/C2778718757","wikidata":"https://www.wikidata.org/wiki/Q143623","display_name":"Sterol","level":3,"score":0.8667600154876709},{"id":"https://openalex.org/C2777585577","wikidata":"https://www.wikidata.org/wiki/Q5168983","display_name":"Coprostanol","level":4,"score":0.6151695847511292},{"id":"https://openalex.org/C2816523","wikidata":"https://www.wikidata.org/wiki/Q180184","display_name":"Sediment","level":2,"score":0.506625235080719},{"id":"https://openalex.org/C199285206","wikidata":"https://www.wikidata.org/wiki/Q749602","display_name":"Terrigenous sediment","level":3,"score":0.4931408762931824},{"id":"https://openalex.org/C2778016309","wikidata":"https://www.wikidata.org/wiki/Q425004","display_name":"Stigmasterol","level":2,"score":0.4744212031364441},{"id":"https://openalex.org/C111368507","wikidata":"https://www.wikidata.org/wiki/Q43518","display_name":"Oceanography","level":1,"score":0.4513222575187683},{"id":"https://openalex.org/C2780173749","wikidata":"https://www.wikidata.org/wiki/Q7445310","display_name":"Sedimentary organic matter","level":3,"score":0.4356178045272827},{"id":"https://openalex.org/C48743137","wikidata":"https://www.wikidata.org/wiki/Q1783121","display_name":"Organic matter","level":2,"score":0.4161861538887024},{"id":"https://openalex.org/C107872376","wikidata":"https://www.wikidata.org/wiki/Q321355","display_name":"Environmental chemistry","level":1,"score":0.3835495412349701},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.3705728054046631},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.36884474754333496},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.3457023501396179},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.27096372842788696},{"id":"https://openalex.org/C18903297","wikidata":"https://www.wikidata.org/wiki/Q7150","display_name":"Ecology","level":1,"score":0.23912474513053894},{"id":"https://openalex.org/C43617362","wikidata":"https://www.wikidata.org/wiki/Q170050","display_name":"Chromatography","level":1,"score":0.20867407321929932},{"id":"https://openalex.org/C2778163477","wikidata":"https://www.wikidata.org/wiki/Q43656","display_name":"Cholesterol","level":2,"score":0.19364693760871887},{"id":"https://openalex.org/C151730666","wikidata":"https://www.wikidata.org/wiki/Q7205","display_name":"Paleontology","level":1,"score":0.1541936695575714},{"id":"https://openalex.org/C55493867","wikidata":"https://www.wikidata.org/wiki/Q7094","display_name":"Biochemistry","level":1,"score":0.08644849061965942}],"mesh":[],"locations_count":2,"locations":[{"id":"pmh:oai:https://spectrum.library.concordia.ca:8465","doi":null,"is_oa":false,"landing_page_url":"https://spectrum.library.concordia.ca/8465/1/MR10208.pdf","pdf_url":"https://spectrum.library.concordia.ca/8465/1/MR10208.pdf","source":{"id":"https://openalex.org/S4306400871","display_name":"Spectrum Research Repository (Concordia University)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I60158472","host_organization_name":"Concordia University","host_organization_lineage":["https://openalex.org/I60158472"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"Thesis"},{"id":"mag:3085414","doi":null,"is_oa":false,"landing_page_url":"https://spectrum.library.concordia.ca/8465/","pdf_url":null,"source":null,"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":null}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Life below water","score":1.0,"id":"https://metadata.un.org/sdg/14"}],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W2142785602","https://openalex.org/W2133716003","https://openalex.org/W1967214983","https://openalex.org/W1969412381","https://openalex.org/W2128222707","https://openalex.org/W7100996916","https://openalex.org/W1989472864","https://openalex.org/W2041906387","https://openalex.org/W2011287899","https://openalex.org/W2330254013"],"abstract_inverted_index":{"Sediments":[0],"from":[1,25,41],"five":[2],"contrasting":[3],"stations":[4],"in":[5,48,75,84],"the":[6,37,49,56,76,103],"western":[7],"Mexican":[8],"margin":[9],"(Pacific":[10],"Ocean)":[11],"were":[12,23,73,89],"investigated":[13],"for":[14],"sterol":[15,38,81],"distribution":[16],"and":[17,29,70,96],"organic-walled":[18],"dinoflagellate":[19,117],"cysts":[20],"(dinocysts).":[21],"Sub-samples":[22],"taken":[24],"depths":[26],"of":[27,68,86,105,109],"3-6cm":[28],"16-27cm,":[30],"representing":[31],"different":[32],"environmental":[33],"conditions.":[34],"In":[35],"general,":[36],"concentrations":[39],"examined":[40],"these":[42,87],"sites":[43],"showed":[44],"more":[45],"advanced":[46],"degradation":[47],"deeper":[50],"sediments":[51,88],"compared":[52],"to":[53,119],"samples":[54],"near":[55],"sediment-water":[57],"interface.":[58],"Using":[59],"a":[60,106,110],"molecular-level":[61],"gas":[62],"chromatography":[63],"(GC)":[64],"approach,":[65],"23":[66],"sterols":[67],"marine":[69,120],"terrigenous":[71],"sources":[72],"identified":[74],"natural":[77],"samples.":[78],"The":[79],"major":[80],"components":[82],"detected":[83],"most":[85],"cholest-5-en-3\u03b2-ol":[90],"(cholesterol),":[91],"24-methylcholesta-5,22E-dien-3\u03b2-ol":[92],"(brassicasterol":[93],"or":[94],"dihydrobrassicasterol)":[95],"24-Ethylcholesta-5,22E-dien-3\u03b2-ol":[97],"(stigmasterol).":[98],"This":[99],"method":[100],"also":[101],"enabled":[102],"identification":[104],"specific":[107],"biomarker":[108],"eukaryotic":[111],"organism,":[112],"4{460},23,24-trimethyl-5{460}-cholest-22":[113],"E-en-3\u03b2-ol":[114],"(dinosterol),":[115],"indicating":[116],"inputs":[118],"sedimentary":[121],"organic":[122],"matter":[123]},"counts_by_year":[],"updated_date":"2026-11-04T10:54:05.112534","created_date":"2016-06-24T00:00:00"}