{"id":"https://openalex.org/W952713623","doi":null,"title":"Kajian parameter fisik, kimia dan biologi dalam kaitannya dengan keberadaan ikan di kawasan perairan Danau Toba Sumatera Utara","display_name":"Kajian parameter fisik, kimia dan biologi dalam kaitannya dengan keberadaan ikan di kawasan perairan Danau Toba Sumatera Utara","publication_year":2001,"publication_date":"2001-01-01","ids":{"openalex":"https://openalex.org/W952713623","mag":"952713623"},"language":"id","primary_location":{"id":"mag:952713623","doi":null,"is_oa":false,"landing_page_url":"http://repository.ugm.ac.id/45731/","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},"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/A5053461352","display_name":"Pasder Berutu","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Pasder Berutu","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"last","author":{"id":"https://openalex.org/A5113714845","display_name":"H. Totok Gunawan","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"H. Totok Gunawan","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":[],"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/T12773","display_name":"Water Quality and Resources Studies","score":0.43799999356269836,"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"}},"topics":[{"id":"https://openalex.org/T12773","display_name":"Water Quality and Resources Studies","score":0.43799999356269836,"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/T13490","display_name":"Aquatic Ecosystems and Biodiversity","score":0.2425999939441681,"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/T13485","display_name":"Coastal Fisheries and Human Impacts","score":0.0934000015258789,"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/lake-toba","display_name":"Lake Toba","score":0.6909999847412109},{"id":"https://openalex.org/keywords/water-physicochemical-parameters","display_name":"water physicochemical parameters","score":0.7260000109672546},{"id":"https://openalex.org/keywords/biological-parameters","display_name":"biological parameters","score":0.640999972820282},{"id":"https://openalex.org/keywords/fish-occurrence","display_name":"fish occurrence","score":0.6589999794960022},{"id":"https://openalex.org/keywords/fish-habitat","display_name":"fish habitat","score":0.49000000953674316},{"id":"https://openalex.org/keywords/water-quality","display_name":"water quality","score":0.4359999895095825},{"id":"https://openalex.org/keywords/freshwater-fish","display_name":"freshwater fish","score":0.36000001430511475}],"concepts":[{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.42198652029037476}],"mesh":[],"locations_count":1,"locations":[{"id":"mag:952713623","doi":null,"is_oa":false,"landing_page_url":"http://repository.ugm.ac.id/45731/","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":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W178182287","https://openalex.org/W2529051651","https://openalex.org/W2891641583","https://openalex.org/W7048223275","https://openalex.org/W144098278","https://openalex.org/W7071938994","https://openalex.org/W3201738350","https://openalex.org/W7165087748","https://openalex.org/W3199834466","https://openalex.org/W3146314194"],"abstract_inverted_index":null,"counts_by_year":[],"updated_date":"2026-11-04T10:54:05.112534","created_date":"2016-06-24T00:00:00"}