{"created":"2023-05-15T16:41:58.586180+00:00","id":16803,"links":{},"metadata":{"_buckets":{"deposit":"e2cb508e-0b16-46f5-8ab4-1ead31bbf4f1"},"_deposit":{"created_by":2,"id":"16803","owners":[2],"pid":{"revision_id":0,"type":"depid","value":"16803"},"status":"published"},"_oai":{"id":"oai:nagasaki-u.repo.nii.ac.jp:00016803","sets":["50:51"]},"author_link":["65025","65023","65024","65022"],"item_2_alternative_title_19":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"Process of eutrophication in enclosed seas recorded in dinoflagellate cyst assemblages and sediments : the case in Nagasaki Bay, west Japan"}]},"item_2_biblio_info_6":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1999-09-10","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"15","bibliographicPageStart":"1","bibliographicVolumeNumber":"66","bibliographic_titles":[{"bibliographic_title":"化石"},{"bibliographic_title":"Fossils","bibliographic_titleLang":"en"}]}]},"item_2_description_4":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"The change of water quality in Nagasaki Bay, West Japan after reclamation of the Koyagi Channel are reconstructed on the basis of analysis of sedimentary facies and dinoflagellate cyst assemblages in two cores collected at the stations NGB-1 and NGB-2 (86cm and 60cm in length respectively). Sedimentation rates of these cores estimated by ^<210>Pb method were approximately 9.9mm/year at St. NGB-1 and 4.3mm/year at St. NGB-2. The median diameter of the sediments varied from 3.9 to 7.1φ at St. NGB-1 and from 1.9 to 8.2φ at St. NGB-2. The proportion of silt and clay increased upward at St. NGB-1 after reclamation of the Koyagi Channel in 1968, because larger sediment particles derived from the rivers became unable to be transported to this point. At NGB-2, the median diameter of the sediments became 3.9φ from 1.9φ around the 1943 year horizon, concordant with the remarkable increase of human population in Koyagi Town. Dinoflagellate cysts mainly consisted of the autotrophic Gonyaulacoid Spiniferites spp., the heterotrophic Protoperidinioid Brigantedinium spp., and the autotrophic Gymnodinioid Pheopolykrikos hartmannii. At both stations, cyst abundance decreased approximately from 1969 to 1995, but cysts of heterotrophic species increased during this period. At St. NGB-2, the abundance of heterotrophic species recorded a maximuim (ca. 64%) at the horizon deposited in about 1948. Since reproduction of heterotrophic dinoflagellate cysts is stimulated by foods such as diatoms and other smaller phytoplankton, the increase of these cysts indicate that primary production of diatoms and other phytoplanktons might have been accelerated, and that in that period nutrients for these autotrophic micro-algae such as nitrogen and phosphates probably increased. These data suggest that eutrophication started in around 1950 and was accelerated after reclamation of the Koyagi Channel.","subitem_description_type":"Abstract"}]},"item_2_description_63":{"attribute_name":"引用","attribute_value_mlt":[{"subitem_description":"化石 = Fossils, vol. 66, pp. 1-15 ; 1999","subitem_description_type":"Other"}]},"item_2_full_name_3":{"attribute_name":"著者別名","attribute_value_mlt":[{"nameIdentifiers":[{"nameIdentifier":"65024","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Matsuoka, Kazumi"}]},{"nameIdentifiers":[{"nameIdentifier":"65025","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Kim, Hyeung Sin"}]}]},"item_2_publisher_33":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"日本古生物学会"}]},"item_2_rights_13":{"attribute_name":"権利","attribute_value_mlt":[{"subitem_rights":"日本古生物学会"},{"subitem_rights":"本文データは学協会の許諾に基づきCiNiiから複製したものである"}]},"item_2_source_id_10":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN00041606","subitem_source_identifier_type":"NCID"}]},"item_2_source_id_7":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"00229202","subitem_source_identifier_type":"ISSN"}]},"item_2_version_type_16":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"松岡, 數充"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"金, 亨信"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2020-12-23"}],"displaytype":"detail","filename":"110002704258.pdf","filesize":[{"value":"1.9 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"110002704258.pdf","url":"https://nagasaki-u.repo.nii.ac.jp/record/16803/files/110002704258.pdf"},"version_id":"fcc70115-68e8-42bf-b5cd-2e0bde9c4fc0"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"表層堆積物に残された渦鞭毛藻シスト群集の変化と閉鎖系沿岸海域での富栄養化 : 長崎湾の場合","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"表層堆積物に残された渦鞭毛藻シスト群集の変化と閉鎖系沿岸海域での富栄養化 : 長崎湾の場合"}]},"item_type_id":"2","owner":"2","path":["51"],"pubdate":{"attribute_name":"公開日","attribute_value":"2010-01-06"},"publish_date":"2010-01-06","publish_status":"0","recid":"16803","relation_version_is_last":true,"title":["表層堆積物に残された渦鞭毛藻シスト群集の変化と閉鎖系沿岸海域での富栄養化 : 長崎湾の場合"],"weko_creator_id":"2","weko_shared_id":-1},"updated":"2023-05-17T20:36:34.303327+00:00"}