{"created":"2025-03-04T02:58:58.500575+00:00","id":2013522,"links":{},"metadata":{"_buckets":{"deposit":"7160414c-78fb-4fae-811b-a640dd685ea2"},"_deposit":{"created_by":92,"id":"2013522","owner":"92","owners":[92],"pid":{"revision_id":0,"type":"depid","value":"2013522"},"status":"published"},"_oai":{"id":"oai:fra.repo.nii.ac.jp:02013522","sets":["1:1735006234112"]},"author_link":["476","1821","801"],"control_number":"2013522","item_10002_biblio_info_7":{"attribute_name":"bibliographic_information","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2017-08-08","bibliographicIssueDateType":"Issued"},"bibliographicNumberOfPages":"31","bibliographicPageEnd":"50","bibliographicPageStart":"20","bibliographicVolumeNumber":"1","bibliographic_titles":[{"bibliographic_title":"SH\"U\"N サスティナブルでヘルシーな “うまい” 日本の魚プロジェクトホームページ（閉鎖）","bibliographic_titleLang":"ja"}]}]},"item_10002_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"評価対象である日本の太平洋北部（以下、太平洋北区：我が国の漁獲統計海区）では、主要水産種の食性、栄養段階、捕食者などに関する長年の調査を通じて、生態系に関する情報が比較的豊富に得られており、現在生態系モデルを用いた解析も進められている。海洋環境及び低次生産に関する調査や主要小型浮魚類の加入量調査などが毎年定期的に行われ、調査を通じて生態系に関する広域的な時系列情報をモニターできる体制も整っている。大中型まきあみ漁船は漁獲成績報告書の提出が義務づけられており、主な利用種の漁獲情報は経年的に蓄積されている。\n\n太平洋北区においてマサバを漁獲する大中型まきあみ漁業は、混獲が発生しにくい操業形態を取っており、混獲の影響は小さいと評価されるが、混獲非利用種や希少種に関して漁業から情報収集できる体制が整っていない点は改善の余地がある。\n\nマサバを対象とした大中型まきあみ漁業が、食物網を通じてマサバの捕食者、餌生物、競争種に重大な間接影響を及ぼしている兆候は検出されなかった。さらに、太平洋北区の表層生態系全体の変化として、マサバ、マイワシ、カタクチイワシ等の小型浮魚類は魚種交替と呼ばれる大規模長周期の資源変動を示すが、各魚種の資源変動は位相がずれており、かつ資源状態の悪化が懸念される魚種はないことから、これら小型浮魚類は全体として動物プランクトン等による二次生産とマグロ類、カジキ類等の高次捕食者をつなぐ生態系機能を維持していると考えられる。ただし､太平洋北区の漁獲は栄養段階3.5～4に集中しており、マサバは資源状態が低位でありながら漁獲量に占める割合が最も高い重要魚種であることから、漁獲が環境変動と相まって生態系に及ぼす影響を慎重にモニタリングしていくことが大切である。大気環境、水質環境への影響は軽微であると考えられる。","subitem_description_language":"ja","subitem_description_type":"Abstract"}]},"item_10002_description_6":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"2. 海洋環境と生態系への配慮\n\n　概要\n\n　評価範囲\n\n　2.1 操業機の環境・生態系情報，科学調査，モニタリング\n　　2.1.1 基盤情報の蓄積\n　　2.1.2 科学調査の実施\n　　2.1.3 漁業活動を通じたモニタリング\n\n　2.2 同時漁獲種\n　　2.2.1 混獲利用種\n　　2.2.2 混獲非利用種\n　　2.2.3 希少種\n\n　2.3 生態系・環境\n　　2.3.1 食物網を通じた間接作用\n　　　2.3.1.1 捕食者\n　　　2.3.1.2 餌生物\n　　　2.3.1.3 競争者\n　　2.3.2 生態系全体\n　　2.3.3 海底環境（着底漁具を用いる漁業）\n　　2.3.4 水質環境\n　　2.3.5 大気環境\n　\n　引用文献","subitem_description_language":"ja","subitem_description_type":"TableOfContents"},{"subitem_description":"Ver.1.0.3\n編纂：SH\"U\"Nプロジェクトチーム\n編纂責任者：大関芳沖, 杉崎宏哉","subitem_description_language":"ja","subitem_description_type":"Other"}]},"item_10002_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"水産研究・教育機構","subitem_publisher_language":"ja"}]},"item_10002_radio_30":{"attribute_name":"item_10002_radio_30","attribute_value_mlt":[{"subitem_radio_item":"渡邉","subitem_radio_language":"ja"}]},"item_10002_relation_16":{"attribute_name":"情報源","attribute_value_mlt":[{"subitem_relation_name":[{"subitem_relation_name_language":"ja","subitem_relation_name_text":"SH\"U\"Nプロジェクト評価結果"}],"subitem_relation_type":"isPartOf","subitem_relation_type_id":{"subitem_relation_type_id_text":"SHUN_section2_01","subitem_relation_type_select":"Local"}}]},"item_10002_version_type_20":{"attribute_name":"出版タイプ","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":[{"creatorAffiliations":[{"affiliationNames":[{"affiliationNameLang":"ja"}]}],"creatorNames":[{"creatorName":"Kishida, 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