{"created":"2022-01-27T08:16:44.415698+00:00","id":2004822,"links":{},"metadata":{"_buckets":{"deposit":"84dc9b0d-1c89-410d-b688-d48d65785e2d"},"_deposit":{"id":"2004822","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"2004822"},"status":"published"},"_oai":{"id":"oai:u-ryukyu.repo.nii.ac.jp:02004822","sets":["1642838403123","1642838403551:1642838406414"]},"author_link":[],"item_1617186331708":{"attribute_name":"Title","attribute_value_mlt":[{"subitem_title":"沖縄サンゴ礁海域における底生生物の群集構造に及ぼすナガウニの生物浸食作用の影響","subitem_title_language":"ja"},{"subitem_title":"Effect of bioerosion by the sea urchin, Echinometra mathaei(Blainville) on the community structure of reef flats in Okinawa","subitem_title_language":"en"}]},"item_1617186419668":{"attribute_name":"Creator","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"土屋, 誠","creatorNameLang":"ja"}]},{"creatorNames":[{"creatorName":"Tsuchiya, Makoto","creatorNameLang":"en"}]}]},"item_1617186476635":{"attribute_name":"Access Rights","attribute_value_mlt":[{"subitem_access_right":"open access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_abf2"}]},"item_1617186609386":{"attribute_name":"Subject","attribute_value_mlt":[{"subitem_subject":"ナガウニ","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"群集構造","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"Bioerosion","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"生物浸食作用","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"種内変異","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"2型","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"Intraspecific variation","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Echinometra mathaei (Blainville)","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Community structure","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"生物侵食作用","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"サンゴ礁","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"活動パターン","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"環境の異質性","subitem_subject_language":"ja","subitem_subject_scheme":"Other"}]},"item_1617186626617":{"attribute_name":"Description","attribute_value_mlt":[{"subitem_description":"科研費番号: 61540476","subitem_description_type":"Other"},{"subitem_description":"昭和61年度～昭和62年度科学研究費補助金（一般研究C）研究成果報告書","subitem_description_type":"Other"},{"subitem_description":"研究概要：1.ナガウニは沖縄のサンゴ礁海域で最も普通に見られるウニであり, 形態的及び生態特徴によりA～Dの4タイプに類別される. このうちタイプB, C, Dはリーフクレストでサンゴ礁を浸食して作った穴の中に生息していることが多い. 一方, タイプAは礁池内などに見られ, 多数集合していることが多い. これらを一定区域内から除去し, 回復過程を調べた. タイプAは1～2ヶ月以内にかなりの数が再侵入するが, 他は, 1年以上経過後も除去区で観察される個体は稀である. 2.穴の中にはウニは1個体のみが見られ, 別の個体を入れると追い出す. その排他性はC, B, Aの順で強い(Dについては未調査). 3.穴の中に住む個体は外に出ないと思われる. 従って穴外にはナガウニの活動の影響を受けない海藻が優占する群集が発達する. 海藻の間や岩のくぼみ, 小穴を利用して小甲殻類, 多毛類, 貝類などが生息しており, 多様度は高い, 一方, 穴内はgrazingの影響を常に受けるので付着生物の生存は困難である. 内部の生物群集は極めて単純である. ところがナガウニが高温その他の要因で死亡するとそこは長期にわたってナガウニが欠落するので群集の変化が生じる. 砂泥の堆積が顕著になり, 埋在性動物が侵入し, 岩肌には生物の付着が開始される. 海藻も生育し, 群集は複雑化するが, ナガウニと共生しているヤドリエビは生息場所を失うので消滅する. 4.以上の様にナガウニはサンゴ礁海岸の潮間帯下部, 亜潮間帯上縁部の生物群集の成立過程に大きく関与している. 生物浸食作用により岩上に凹凸を形成し, 環境の異質性を高めること, 及び活動域が, 巣穴内に限られることが, 大きな要因である. タイプAは礁池内で大きく移動するのでgrazingにより生物群集に影響を及ぼしていると考えられるが, 本研究では充分な結果を得ることが出来なかった.","subitem_description_type":"Other"},{"subitem_description":"研究概要：Echinometra mathaei is the most abundant sea urchin species along the coasts of Okinawa Island and is divided into 4 types (A-D) according to the characters of spine color, spicule and chromosome. Type A urchins inhabit moats and rock pools, and show a gregarious distribution. On the other hand, Types B, C and D urchins inhabit burrows, which may be excavated by themselves, on the reef crest and no typical differences in the distribution area among them are recognized. Urchins inhabiting in burrows expell the intruders and Type C urchins are more aggressive than Types A and B urchins (Type D urchins were not studied). E. mathaei makes environmental heterogeneity on the rocky substratum by its bioerosive activity. The heterogeneity and its activity affects the organization process of the lower intertidal and shallow subtidal communities. The burrows, From which the urchins had been removed or in which they had died, were not re-colonized fully within 1 yr. In the emptied burrows, sands and coral rubbles were accumulated and infaunal animals could invade. Some sessile organisms were also seen on the walls of the burrows, but these organisms were not seen in the burrows occupied by the urchins. Outside the burrows, small algae were growing abundantly and some animals including crustaceans, polychaetes and mulluscs lived among them or in small holes. Species diversity is higher outside the burrows than inside, because the urchin seems to live only in burrows and burrow walls may receive strong grazing effect by the urchin.","subitem_description_type":"Other"},{"subitem_description":"未公開：P.4以降（抜刷論文のため）","subitem_description_type":"Other"},{"subitem_description":"研究報告書","subitem_description_type":"Other"}]},"item_1617186643794":{"attribute_name":"Publisher","attribute_value_mlt":[{"subitem_publisher":"土屋誠","subitem_publisher_language":"ja"}]},"item_1617186702042":{"attribute_name":"Language","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_1617186783814":{"attribute_name":"Identifier","attribute_value_mlt":[{"subitem_identifier_type":"HDL","subitem_identifier_uri":"http://hdl.handle.net/20.500.12000/11927"}]},"item_1617186920753":{"attribute_name":"Source Identifier","attribute_value_mlt":[{"subitem_source_identifier":"BA56997533","subitem_source_identifier_type":"NCID"}]},"item_1617187056579":{"attribute_name":"Bibliographic Information","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1988-03","bibliographicIssueDateType":"Issued"}}]},"item_1617258105262":{"attribute_name":"Resource Type","attribute_value_mlt":[{"resourcetype":"research report","resourceuri":"http://purl.org/coar/resource_type/c_18ws"}]},"item_1617265215918":{"attribute_name":"Version Type","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_1617605131499":{"attribute_name":"File","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_access","filename":"61540476.pdf","mimetype":"application/pdf","url":{"objectType":"fulltext","url":"https://u-ryukyu.repo.nii.ac.jp/record/2004822/files/61540476.pdf"},"version_id":"dd9446a1-c6ec-4093-a9fb-40cb2b52a35b"}]},"item_title":"沖縄サンゴ礁海域における底生生物の群集構造に及ぼすナガウニの生物浸食作用の影響","item_type_id":"15","owner":"1","path":["1642838403123","1642838406414"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2009-08-18"},"publish_date":"2009-08-18","publish_status":"0","recid":"2004822","relation_version_is_last":true,"title":["沖縄サンゴ礁海域における底生生物の群集構造に及ぼすナガウニの生物浸食作用の影響"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2022-10-31T02:23:35.220381+00:00"}