{"id":"https://openalex.org/A5026731981","orcid":null,"observed_orcids":[],"display_name":"Geir Dahl-Hansen","raw_author_names":["G. A. Dahl-Hansen","G. A. P. Dahl-Hansen","Geir A. Dahl-Hansen","Geir A. P. Dahl-Hansen","Geir A.P. Dahl-Hansen","Geir Dahl-Hansen"],"full_name":"Geir A. P. Dahl-Hansen","works_count":17,"cited_by_count":151,"summary_stats":{"2yr_mean_citedness":0.0,"h_index":4,"i10_index":4},"ids":{"openalex":"https://openalex.org/A5026731981","orcid":null,"observed_orcids":[]},"affiliations":[{"institution":{"id":"https://openalex.org/I184942183","ror":"https://ror.org/01xtthb56","display_name":"University of Oslo","country_code":"NO","type":"education","lineage":["https://openalex.org/I184942183"]},"years":[2002]},{"institution":{"id":"https://openalex.org/I4210138062","ror":"https://ror.org/03nrps502","display_name":"Akvaplan-niva","country_code":"NO","type":"company","lineage":["https://openalex.org/I4210138062"]},"years":[2012,2011,2007]},{"institution":{"id":"https://openalex.org/I78037679","ror":"https://ror.org/00wge5k78","display_name":"UiT The Arctic University of Norway","country_code":"NO","type":"education","lineage":["https://openalex.org/I78037679"]},"years":[1995,1994]}],"last_known_institutions":null,"topics":[{"id":"https://openalex.org/T10236","display_name":"Aquatic Ecosystems and Phytoplankton Dynamics","count":6,"subfield":{"id":"https://openalex.org/subfields/2304","display_name":"Environmental Chemistry"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10302","display_name":"Fish Ecology and Management Studies","count":6,"subfield":{"id":"https://openalex.org/subfields/2309","display_name":"Nature and Landscape Conservation"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10032","display_name":"Marine Plankton and Biogeochemistry","count":3,"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/T10447","display_name":"Environmental Toxicology and Ecotoxicology","count":3,"subfield":{"id":"https://openalex.org/subfields/2307","display_name":"Health, Toxicology and Mutagenesis"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12180","display_name":"Polar Research and Ecology","count":3,"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"}}],"topic_share":[{"id":"https://openalex.org/T14106","display_name":"Environmental and Sediment Control","value":5.5e-05,"subfield":{"id":"https://openalex.org/subfields/2308","display_name":"Management, Monitoring, Policy and Law"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11755","display_name":"Transboundary Water Resource Management","value":3.23e-05,"subfield":{"id":"https://openalex.org/subfields/3312","display_name":"Sociology and Political Science"},"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/T10819","display_name":"Mercury impact and mitigation studies","value":1.99e-05,"subfield":{"id":"https://openalex.org/subfields/2307","display_name":"Health, Toxicology and Mutagenesis"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12180","display_name":"Polar Research and Ecology","value":1.83e-05,"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"}},{"id":"https://openalex.org/T10302","display_name":"Fish Ecology and Management Studies","value":1.63e-05,"subfield":{"id":"https://openalex.org/subfields/2309","display_name":"Nature and Landscape Conservation"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"x_concepts":[{"id":"505870484","wikidata":"https://www.wikidata.org/wiki/Q180538","display_name":"Fishery","score":0.8377045392990112},{"id":"86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","score":0.8038719296455383},{"id":"18903297","wikidata":"https://www.wikidata.org/wiki/Q7150","display_name":"Ecology","score":0.5802347660064697},{"id":"127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","score":0.5757205486297607},{"id":"39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","score":0.5719736814498901}],"counts_by_year":[{"year":1994,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1995,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2002,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2004,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2005,"works_count":2,"oa_works_count":2,"cited_by_count":0},{"year":2007,"works_count":2,"oa_works_count":2,"cited_by_count":0},{"year":2009,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":2010,"works_count":2,"oa_works_count":2,"cited_by_count":0},{"year":2011,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2012,"works_count":1,"oa_works_count":1,"cited_by_count":6},{"year":2013,"works_count":0,"oa_works_count":0,"cited_by_count":11},{"year":2014,"works_count":0,"oa_works_count":0,"cited_by_count":8},{"year":2015,"works_count":1,"oa_works_count":1,"cited_by_count":5},{"year":2016,"works_count":1,"oa_works_count":1,"cited_by_count":7},{"year":2017,"works_count":2,"oa_works_count":2,"cited_by_count":4},{"year":2018,"works_count":0,"oa_works_count":0,"cited_by_count":3},{"year":2019,"works_count":0,"oa_works_count":0,"cited_by_count":8},{"year":2020,"works_count":0,"oa_works_count":0,"cited_by_count":5},{"year":2021,"works_count":0,"oa_works_count":0,"cited_by_count":5},{"year":2022,"works_count":0,"oa_works_count":0,"cited_by_count":10},{"year":2023,"works_count":0,"oa_works_count":0,"cited_by_count":7},{"year":2024,"works_count":0,"oa_works_count":0,"cited_by_count":4},{"year":2025,"works_count":0,"oa_works_count":0,"cited_by_count":6},{"year":2026,"works_count":0,"oa_works_count":0,"cited_by_count":5}],"display_name_alternatives":["G. A. Dahl-Hansen","G. A. P. Dahl-Hansen","Geir A. Dahl-Hansen","Geir A. P. Dahl-Hansen","Geir A.P. Dahl-Hansen","Geir Dahl-Hansen"],"block_key":"g dahl-hansen","works_api_url":"https://api.openalex.org/works?filter=author.id:A5026731981","updated_date":"2026-11-07T12:08:38","created_date":"2016-06-24T00:00:00"}
