{"id":"https://openalex.org/A5067299477","orcid":null,"observed_orcids":[],"display_name":"Matt K. John","raw_author_names":["M. K. JOHN","M. K. John","MATT K. JOHN","Matt K John","Matt K. John"],"full_name":"MATT K. JOHN","works_count":51,"cited_by_count":2413,"summary_stats":{"2yr_mean_citedness":0.0,"h_index":20,"i10_index":33},"ids":{"openalex":"https://openalex.org/A5067299477","orcid":null,"observed_orcids":[]},"affiliations":[{"institution":{"id":"https://openalex.org/I1331897569","ror":"https://ror.org/051dzs374","display_name":"Agriculture and Agri-Food Canada","country_code":"CA","type":"government","lineage":["https://openalex.org/I1331897569","https://openalex.org/I2802286613"]},"years":[1976,1975,1974,1973,1972,1971,1970]},{"institution":{"id":"https://openalex.org/I1342547582","ror":"https://ror.org/026ny0e17","display_name":"Environment and Climate Change Canada","country_code":"CA","type":"government","lineage":["https://openalex.org/I1342547582","https://openalex.org/I2802286613"]},"years":[1977,1976,1975]},{"institution":{"id":"https://openalex.org/I141945490","ror":"https://ror.org/03rmrcq20","display_name":"University of British Columbia","country_code":"CA","type":"education","lineage":["https://openalex.org/I141945490"]},"years":[1976]}],"last_known_institutions":[{"id":"https://openalex.org/I1342547582","ror":"https://ror.org/026ny0e17","display_name":"Environment and Climate Change Canada","country_code":"CA","type":"government","lineage":["https://openalex.org/I1342547582","https://openalex.org/I2802286613"]}],"topics":[{"id":"https://openalex.org/T10139","display_name":"Heavy metals in environment","count":23,"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/T11418","display_name":"Plant Micronutrient Interactions and Effects","count":17,"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/T12754","display_name":"Plant Growth and Agriculture Techniques","count":17,"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/T13793","display_name":"Environmental and Analytical Chemistry Studies","count":11,"subfield":{"id":"https://openalex.org/subfields/2312","display_name":"Water Science and Technology"},"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/T12294","display_name":"Agricultural Science and Fertilization","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"}}],"topic_share":[{"id":"https://openalex.org/T11418","display_name":"Plant Micronutrient Interactions and Effects","value":0.0001245,"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/T13079","display_name":"Heavy Metals in Plants","value":0.0001013,"subfield":{"id":"https://openalex.org/subfields/1602","display_name":"Analytical Chemistry"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12186","display_name":"Phosphorus and nutrient management","value":9.13e-05,"subfield":{"id":"https://openalex.org/subfields/2311","display_name":"Waste Management and Disposal"},"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/T10139","display_name":"Heavy metals in environment","value":4.76e-05,"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/T12211","display_name":"Aluminum toxicity and tolerance in plants and animals","value":3.52e-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"}}],"x_concepts":[{"id":"185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","score":0.9730141162872314},{"id":"159750122","wikidata":"https://www.wikidata.org/wiki/Q96621023","display_name":"Soil water","score":0.8658465147018433},{"id":"39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","score":0.582806408405304},{"id":"159390177","wikidata":"https://www.wikidata.org/wiki/Q9161265","display_name":"Soil science","score":0.5138957500457764},{"id":"178790620","wikidata":"https://www.wikidata.org/wiki/Q11351","display_name":"Organic chemistry","score":0.12426412105560303}],"counts_by_year":[{"year":1965,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1967,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1969,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1970,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1971,"works_count":7,"oa_works_count":3,"cited_by_count":0},{"year":1972,"works_count":19,"oa_works_count":2,"cited_by_count":0},{"year":1973,"works_count":3,"oa_works_count":0,"cited_by_count":0},{"year":1974,"works_count":3,"oa_works_count":1,"cited_by_count":0},{"year":1975,"works_count":5,"oa_works_count":1,"cited_by_count":0},{"year":1976,"works_count":8,"oa_works_count":2,"cited_by_count":0},{"year":1977,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":2012,"works_count":0,"oa_works_count":0,"cited_by_count":45},{"year":2013,"works_count":0,"oa_works_count":0,"cited_by_count":47},{"year":2014,"works_count":0,"oa_works_count":0,"cited_by_count":45},{"year":2015,"works_count":0,"oa_works_count":0,"cited_by_count":50},{"year":2016,"works_count":0,"oa_works_count":0,"cited_by_count":63},{"year":2017,"works_count":0,"oa_works_count":0,"cited_by_count":41},{"year":2018,"works_count":0,"oa_works_count":0,"cited_by_count":39},{"year":2019,"works_count":0,"oa_works_count":0,"cited_by_count":56},{"year":2020,"works_count":0,"oa_works_count":0,"cited_by_count":39},{"year":2021,"works_count":0,"oa_works_count":0,"cited_by_count":61},{"year":2022,"works_count":0,"oa_works_count":0,"cited_by_count":56},{"year":2023,"works_count":0,"oa_works_count":0,"cited_by_count":68},{"year":2024,"works_count":0,"oa_works_count":0,"cited_by_count":47},{"year":2025,"works_count":0,"oa_works_count":0,"cited_by_count":34},{"year":2026,"works_count":0,"oa_works_count":0,"cited_by_count":37}],"display_name_alternatives":["M. K. JOHN","M. K. John","MATT K. JOHN","Matt K John","Matt K. John"],"block_key":"m john","works_api_url":"https://api.openalex.org/works?filter=author.id:A5067299477","awards_count":0,"awards_api_url":"https://api.openalex.org/awards?filter=investigators.author.id:A5067299477","updated_date":"2026-11-11T13:02:13","created_date":"2016-06-24T00:00:00"}