Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W2320369219', 'doi': 'https://doi.org/10.2331/suisan.67.30', 'title': "Estimation of the Population Size in Number of Ayu, Plecoglossus altivelis altivelis, by the DeLury's Method in the Chikuma River.", 'display_name': "Estimation of the Population Size in Number of Ayu, Plecoglossus altivelis altivelis, by the DeLury's Method in the Chikuma River.", 'publication_year': 2001, 'publication_date': '2001-01-01', 'ids': {'openalex': 'https://openalex.org/W2320369219', 'doi': 'https://doi.org/10.2331/suisan.67.30', 'mag': '2320369219'}, 'language': 'en', 'primary_location': {'is_oa': True, 'landing_page_url': 'https://doi.org/10.2331/suisan.67.30', 'pdf_url': 'https://www.jstage.jst.go.jp/article/suisan1932/67/1/67_1_30/_pdf', 'source': {'id': 'https://openalex.org/S4210186241', 'display_name': 'NIPPON SUISAN GAKKAISHI', 'issn_l': '0021-5392', 'issn': ['0021-5392', '1349-998X'], 'is_oa': True, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/P4310319900', 'host_organization_name': 'Springer Science+Business Media', 'host_organization_lineage': ['https://openalex.org/P4310319965', 'https://openalex.org/P4310319900'], 'host_organization_lineage_names': ['Springer Nature', 'Springer Science+Business Media'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': 'publishedVersion', 'is_accepted': True, 'is_published': True}, 'type': 'article', 'type_crossref': 'journal-article', 'indexed_in': ['crossref'], 'open_access': {'is_oa': True, 'oa_status': 'bronze', 'oa_url': 'https://www.jstage.jst.go.jp/article/suisan1932/67/1/67_1_30/_pdf', 'any_repository_has_fulltext': False}, 'authorships': [{'author_position': 'first', 'author': {'id': 'https://openalex.org/A5018957812', 'display_name': 'Satoshi Yamamoto', 'orcid': 'https://orcid.org/0000-0003-0123-9112'}, 'institutions': [], 'countries': [], 'is_corresponding': False, 'raw_author_name': 'Satoshi Yamamoto', 'raw_affiliation_strings': [], 'affiliations': []}, {'author_position': 'last', 'author': {'id': 'https://openalex.org/A5058140414', 'display_name': 'Yoshiharu Matsumiya', 'orcid': None}, 'institutions': [], 'countries': [], 'is_corresponding': False, 'raw_author_name': 'Yoshiharu Matsumiya', 'raw_affiliation_strings': [], 'affiliations': []}], 'institution_assertions': [], 'countries_distinct_count': 0, 'institutions_distinct_count': 0, 'corresponding_author_ids': [], 'corresponding_institution_ids': [], 'apc_list': None, 'apc_paid': None, 'fwci': 0.0, 'has_fulltext': False, 'cited_by_count': 1, 'citation_normalized_percentile': {'value': 0.370395, 'is_in_top_1_percent': False, 'is_in_top_10_percent': False}, 'cited_by_percentile_year': {'min': 59, 'max': 66}, 'biblio': {'volume': '67', 'issue': '1', 'first_page': '30', 'last_page': '34'}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T10302', 'display_name': 'Importance and Conservation of Freshwater Biodiversity', 'score': 0.9945, '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'}}, 'topics': [{'id': 'https://openalex.org/T10302', 'display_name': 'Importance and Conservation of Freshwater Biodiversity', 'score': 0.9945, '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/T12319', 'display_name': 'Length-Weight Relationships of Fish Species', 'score': 0.9784, 'subfield': {'id': 'https://openalex.org/subfields/1104', 'display_name': 'Aquatic 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/T10230', 'display_name': 'Impacts of Climate Change on Marine Fisheries', 'score': 0.9368, 'subfield': {'id': 'https://openalex.org/subfields/2306', 'display_name': 'Global and Planetary Change'}, '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/plecoglossus-altivelis', 'display_name': 'Plecoglossus altivelis', 'score': 0.994341}, {'id': 'https://openalex.org/keywords/phylogenetic-analysis', 'display_name': 'Phylogenetic Analysis', 'score': 0.499191}], 'concepts': [{'id': 'https://openalex.org/C2994288365', 'wikidata': 'https://www.wikidata.org/wiki/Q642906', 'display_name': 'Plecoglossus altivelis', 'level': 3, 'score': 0.994341}, {'id': 'https://openalex.org/C505870484', 'wikidata': 'https://www.wikidata.org/wiki/Q180538', 'display_name': 'Fishery', 'level': 1, 'score': 0.74030423}, {'id': 'https://openalex.org/C2908647359', 'wikidata': 'https://www.wikidata.org/wiki/Q2625603', 'display_name': 'Population', 'level': 2, 'score': 0.496759}, {'id': 'https://openalex.org/C169733012', 'wikidata': 'https://www.wikidata.org/wiki/Q1613416', 'display_name': 'Population size', 'level': 3, 'score': 0.46251905}, {'id': 'https://openalex.org/C86803240', 'wikidata': 'https://www.wikidata.org/wiki/Q420', 'display_name': 'Biology', 'level': 0, 'score': 0.4397046}, {'id': 'https://openalex.org/C2909208804', 'wikidata': 'https://www.wikidata.org/wiki/Q127282', 'display_name': 'Fish <Actinopterygii>', 'level': 2, 'score': 0.34034923}, {'id': 'https://openalex.org/C149923435', 'wikidata': 'https://www.wikidata.org/wiki/Q37732', 'display_name': 'Demography', 'level': 1, 'score': 0.0}, {'id': 'https://openalex.org/C144024400', 'wikidata': 'https://www.wikidata.org/wiki/Q21201', 'display_name': 'Sociology', 'level': 0, 'score': 0.0}], 'mesh': [], 'locations_count': 1, 'locations': [{'is_oa': True, 'landing_page_url': 'https://doi.org/10.2331/suisan.67.30', 'pdf_url': 'https://www.jstage.jst.go.jp/article/suisan1932/67/1/67_1_30/_pdf', 'source': {'id': 'https://openalex.org/S4210186241', 'display_name': 'NIPPON SUISAN GAKKAISHI', 'issn_l': '0021-5392', 'issn': ['0021-5392', '1349-998X'], 'is_oa': True, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/P4310319900', 'host_organization_name': 'Springer Science+Business Media', 'host_organization_lineage': ['https://openalex.org/P4310319965', 'https://openalex.org/P4310319900'], 'host_organization_lineage_names': ['Springer Nature', 'Springer Science+Business Media'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': 'publishedVersion', 'is_accepted': True, 'is_published': True}], 'best_oa_location': {'is_oa': True, 'landing_page_url': 'https://doi.org/10.2331/suisan.67.30', 'pdf_url': 'https://www.jstage.jst.go.jp/article/suisan1932/67/1/67_1_30/_pdf', 'source': {'id': 'https://openalex.org/S4210186241', 'display_name': 'NIPPON SUISAN GAKKAISHI', 'issn_l': '0021-5392', 'issn': ['0021-5392', '1349-998X'], 'is_oa': True, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/P4310319900', 'host_organization_name': 'Springer Science+Business Media', 'host_organization_lineage': ['https://openalex.org/P4310319965', 'https://openalex.org/P4310319900'], 'host_organization_lineage_names': ['Springer Nature', 'Springer Science+Business Media'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': 'publishedVersion', 'is_accepted': True, 'is_published': True}, 'sustainable_development_goals': [{'score': 0.66, 'id': 'https://metadata.un.org/sdg/14', 'display_name': 'Life below water'}], 'grants': [], 'datasets': [], 'versions': [], 'referenced_works_count': 1, 'referenced_works': ['https://openalex.org/W2324746287'], 'related_works': ['https://openalex.org/W4256531691', 'https://openalex.org/W4230849361', 'https://openalex.org/W2802289011', 'https://openalex.org/W2766913433', 'https://openalex.org/W2419262046', 'https://openalex.org/W2104942376', 'https://openalex.org/W2068394981', 'https://openalex.org/W2005838568', 'https://openalex.org/W180148789', 'https://openalex.org/W1521608843'], 'abstract_inverted_index': {'千曲川でDeLury法によりアユの資源尾数を推定し種苗の放流効果等を検討した。目視観察で得た友釣りによるCPUEと累積釣獲尾数を基に,': [0], '解禁日の資源尾数と漁具能率を推定した。放流尾数は既知なので,': [1], '解禁日までの生残率(1日あたり死亡率)は,': [2], '1997年が13.0%': [3], '(3.48%),': [4], '1998年が36.9%': [5], '(2.98%)と推定された。アユの資源調査に友釣りの釣獲情報を用いたDeLury法は適用できる。': [6]}, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W2320369219', 'counts_by_year': [], 'updated_date': '2024-09-18T17:53:20.748518', 'created_date': '2016-06-24'}