{"id":"https://openalex.org/A5084201453","orcid":null,"observed_orcids":[],"display_name":"K. Harmsen","raw_author_names":["Harmsen, K.","Harmsen, Karl","K Harmsen","K. Harmsen","Karl Harmsen"],"full_name":"Karl Harmsen","works_count":44,"cited_by_count":1062,"summary_stats":{"2yr_mean_citedness":0.0,"h_index":16,"i10_index":21},"ids":{"openalex":"https://openalex.org/A5084201453","orcid":null,"observed_orcids":[]},"affiliations":[{"institution":{"id":"https://openalex.org/I1279585755","ror":"https://ror.org/045dj7z60","display_name":"International Fertilizer Development Center","country_code":"US","type":"nonprofit","lineage":["https://openalex.org/I1279585755"]},"years":[1990,1988]},{"institution":{"id":"https://openalex.org/I1286959531","ror":"https://ror.org/006kxhp52","display_name":"United Nations","country_code":"US","type":"government","lineage":["https://openalex.org/I1286959531"]},"years":[2003]},{"institution":{"id":"https://openalex.org/I192358263","ror":"https://ror.org/02n2syw04","display_name":"International Center for Agricultural Research in the Dry Areas","country_code":"LB","type":"facility","lineage":["https://openalex.org/I1286583668","https://openalex.org/I192358263"]},"years":[2004,2003,1985,1984,1982,1979]},{"institution":{"id":"https://openalex.org/I4387152645","ror":"https://ror.org/038v7xb98","display_name":"International Institute for Geo-Information Science and Earth Observation","country_code":"NL","type":"facility","lineage":["https://openalex.org/I4387152645","https://openalex.org/I94624287"]},"years":[2004,2003,2001]},{"institution":{"id":"https://openalex.org/I51281103","ror":"https://ror.org/04a39s417","display_name":"Indian Institute of Remote Sensing","country_code":"IN","type":"government","lineage":["https://openalex.org/I1289461252","https://openalex.org/I3148377317","https://openalex.org/I51281103"]},"years":[2006,2003]},{"institution":{"id":"https://openalex.org/I913481162","ror":"https://ror.org/04qw24q55","display_name":"Wageningen University & Research","country_code":"NL","type":"education","lineage":["https://openalex.org/I913481162"]},"years":[1982,1975]}],"last_known_institutions":null,"topics":[{"id":"https://openalex.org/T12294","display_name":"Agricultural Science and Fertilization","count":13,"subfield":{"id":"https://openalex.org/subfields/1111","display_name":"Soil Science"},"field":{"id":"https://openalex.org/fields/11","display_name":"Agricultural and Biological Sciences"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T10004","display_name":"Soil Carbon and Nitrogen Dynamics","count":9,"subfield":{"id":"https://openalex.org/subfields/1111","display_name":"Soil Science"},"field":{"id":"https://openalex.org/fields/11","display_name":"Agricultural and Biological Sciences"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T10139","display_name":"Heavy metals in environment","count":8,"subfield":{"id":"https://openalex.org/subfields/2310","display_name":"Pollution"},"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/T13890","display_name":"Remote Sensing and Land Use","count":6,"subfield":{"id":"https://openalex.org/subfields/3305","display_name":"Geography, Planning and Development"},"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/T10111","display_name":"Remote Sensing in Agriculture","count":4,"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/T13890","display_name":"Remote Sensing and Land Use","value":2.8e-05,"subfield":{"id":"https://openalex.org/subfields/3305","display_name":"Geography, Planning and Development"},"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/T13934","display_name":"Indigenous Knowledge Systems and Agriculture","value":2.3e-05,"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/T12294","display_name":"Agricultural Science and Fertilization","value":2.24e-05,"subfield":{"id":"https://openalex.org/subfields/1111","display_name":"Soil Science"},"field":{"id":"https://openalex.org/fields/11","display_name":"Agricultural and Biological Sciences"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T11418","display_name":"Plant Micronutrient Interactions and Effects","value":2.2e-05,"subfield":{"id":"https://openalex.org/subfields/1110","display_name":"Plant Science"},"field":{"id":"https://openalex.org/fields/11","display_name":"Agricultural and Biological Sciences"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T13678","display_name":"Agricultural Research and Practices","value":2e-05,"subfield":{"id":"https://openalex.org/subfields/1100","display_name":"General Agricultural and Biological Sciences"},"field":{"id":"https://openalex.org/fields/11","display_name":"Agricultural and Biological Sciences"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}}],"x_concepts":[{"id":"159750122","wikidata":"https://www.wikidata.org/wiki/Q96621023","display_name":"Soil water","score":0.7832954525947571},{"id":"185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","score":0.7666594386100769},{"id":"39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","score":0.6973735094070435},{"id":"159390177","wikidata":"https://www.wikidata.org/wiki/Q9161265","display_name":"Soil science","score":0.4621478021144867},{"id":"178790620","wikidata":"https://www.wikidata.org/wiki/Q11351","display_name":"Organic chemistry","score":0.16376161575317383}],"counts_by_year":[{"year":1975,"works_count":3,"oa_works_count":0,"cited_by_count":0},{"year":1977,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":1978,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1979,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1980,"works_count":2,"oa_works_count":1,"cited_by_count":0},{"year":1982,"works_count":2,"oa_works_count":2,"cited_by_count":0},{"year":1984,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1985,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1987,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":1988,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1990,"works_count":4,"oa_works_count":2,"cited_by_count":0},{"year":1991,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1993,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":2000,"works_count":2,"oa_works_count":2,"cited_by_count":0},{"year":2001,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":2002,"works_count":3,"oa_works_count":0,"cited_by_count":0},{"year":2003,"works_count":4,"oa_works_count":3,"cited_by_count":0},{"year":2004,"works_count":7,"oa_works_count":2,"cited_by_count":0},{"year":2006,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":2008,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2010,"works_count":2,"oa_works_count":1,"cited_by_count":0},{"year":2012,"works_count":0,"oa_works_count":0,"cited_by_count":39},{"year":2013,"works_count":0,"oa_works_count":0,"cited_by_count":37},{"year":2014,"works_count":0,"oa_works_count":0,"cited_by_count":33},{"year":2015,"works_count":0,"oa_works_count":0,"cited_by_count":33},{"year":2016,"works_count":0,"oa_works_count":0,"cited_by_count":33},{"year":2017,"works_count":1,"oa_works_count":0,"cited_by_count":34},{"year":2018,"works_count":0,"oa_works_count":0,"cited_by_count":30},{"year":2019,"works_count":0,"oa_works_count":0,"cited_by_count":27},{"year":2020,"works_count":0,"oa_works_count":0,"cited_by_count":36},{"year":2021,"works_count":0,"oa_works_count":0,"cited_by_count":38},{"year":2022,"works_count":0,"oa_works_count":0,"cited_by_count":52},{"year":2023,"works_count":0,"oa_works_count":0,"cited_by_count":28},{"year":2024,"works_count":0,"oa_works_count":0,"cited_by_count":43},{"year":2025,"works_count":0,"oa_works_count":0,"cited_by_count":13},{"year":2026,"works_count":0,"oa_works_count":0,"cited_by_count":7}],"display_name_alternatives":["Harmsen, K.","Harmsen, Karl","K Harmsen","K. Harmsen","Karl Harmsen"],"block_key":"k harmsen","works_api_url":"https://api.openalex.org/works?filter=author.id:A5084201453","awards_count":0,"updated_date":"2026-11-08T12:57:04","created_date":"2016-06-24T00:00:00"}
