{"created":"2021-03-01T07:00:17.454015+00:00","id":40640,"links":{},"metadata":{"_buckets":{"deposit":"b318fb52-ef72-49a4-ba60-fc840fbfeefb"},"_deposit":{"id":"40640","owners":[],"pid":{"revision_id":0,"type":"depid","value":"40640"},"status":"published"},"_oai":{"id":"oai:repository.dl.itc.u-tokyo.ac.jp:00040640","sets":["40:6494:7162:7180:7181","9:504:7165:7182:7183"]},"item_4_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2012-03-20","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"1","bibliographicPageEnd":"51","bibliographicPageStart":"39","bibliographicVolumeNumber":"35","bibliographic_titles":[{"bibliographic_title":"Coastal marine science"}]}]},"item_4_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"In the present study, a mathematical model was developed to evaluate the effect of nitrogen (N) input from feed on the N dynamics under different feeding scenarios in a well aerated and enclosed culture pond of black tiger shrimp (Penaeus monodon). Three feeding levels were examined: underfeeding, optimum feeding and overfeeding. The model was formulated using field data gathered from an earthen pond (0.69 ha) which was stocked with shrimp post larvae at a density of 340,000 individuals ha(-1) and grown for 151 d. The model suggested that the underfeeding rate 329 kgNha(-1)cycle(-1)) observed from the study pond, which was being underfed, resulted in the ingestion of the natural productivity in the pond. With the underfeeding practice, phytoplankton assimilated ammonia and nitrate+nitrite at the rates of 412 and 52 kgNha(-1)cycle(-1), respectively, while nitrification rate in the water column was 45 kgNha(-1)cycle(-1). The coupled processes of nitrification and denitrification in sediment were nearly equal at rates averaging 207 and 206 kgNha(-1)cycle(-1), respectively. Optimum feeding indicated that the larger N input accelerated the accumulation of N in shrimp and phytoplankton as well as the accumulation of N in the water column and sediment. The coupled processes of nitrification and denitrification were accelerated to the rates of 298 and 292 kgNha(-1)cycle(-1). The overfeeding practice indicated that the extra N did not accelerate the process of N assimilation by phytoplankton due to light limitation, but accelerated the N processes in the sediment resulting in the active removal of N from the enclosed shrimp culture pond through the denitrification process (343 kgNha(-1)cycle(-1)). Thus, the mathematical model developed by the present study proved to be an effective tool in understanding N dynamics and gives informative data for farm management in the enclosed culture pond of black tiger shrimp.","subitem_description_type":"Abstract"}]},"item_4_description_6":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"Proceedings of the Horiba International Conference \"New Direction of Ocean Research in the Western Pacific\" : Past, Present and Future of UNESCO/IOC/WESTPAC Activity for 50 years and the JSPS Project \"Coastal Marine Science\"","subitem_description_type":"Other"},{"subitem_description":"Section I: Research Articles/Harmful microalgae","subitem_description_type":"Other"}]},"item_4_identifier_registration":{"attribute_name":"ID登録","attribute_value_mlt":[{"subitem_identifier_reg_text":"10.15083/00040631","subitem_identifier_reg_type":"JaLC"}]},"item_4_publisher_20":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"International Coastal Research Center, Atmosphere and Ocean Research Institute, the University of Tokyo"}]},"item_4_source_id_10":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AA11957899","subitem_source_identifier_type":"NCID"}]},"item_4_source_id_8":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"13493000","subitem_source_identifier_type":"ISSN"}]},"item_4_subject_15":{"attribute_name":"日本十進分類法","attribute_value_mlt":[{"subitem_subject":"452","subitem_subject_scheme":"NDC"}]},"item_4_text_21":{"attribute_name":"出版者別名","attribute_value_mlt":[{"subitem_text_value":"東京大学大気海洋研究所国際沿岸海洋研究センター"}]},"item_4_text_4":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"Marine Shrimp Culture Research and Development Institute, Department of Fisheries"},{"subitem_text_value":"Hiroshima University"},{"subitem_text_value":"Kochi University"},{"subitem_text_value":"Coastal Aquaculture Research Institute, Department of Fisheries"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Kittiwanich, Jutarat"}],"nameIdentifiers":[{"nameIdentifier":"93370","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Songsangjinda, Putth"}],"nameIdentifiers":[{"nameIdentifier":"93371","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Yamamoto, Tamiji"}],"nameIdentifiers":[{"nameIdentifier":"93372","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Fukami, Kimio"}],"nameIdentifiers":[{"nameIdentifier":"93373","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Muangyao, Pensri"}],"nameIdentifiers":[{"nameIdentifier":"93374","nameIdentifierScheme":"WEKO"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2017-06-14"}],"displaytype":"detail","filename":"CMS350106.pdf","filesize":[{"value":"1.0 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"CMS350106.pdf","url":"https://repository.dl.itc.u-tokyo.ac.jp/record/40640/files/CMS350106.pdf"},"version_id":"86d47da6-3399-4bcf-941f-05964c195d11"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"modelling","subitem_subject_scheme":"Other"},{"subitem_subject":"nitrogen dynamics","subitem_subject_scheme":"Other"},{"subitem_subject":"closed system","subitem_subject_scheme":"Other"},{"subitem_subject":"Penaeus monodon","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Modeling the effect of nitrogen input from feed on the nitrogen dynamics in an enclosed intensive culture pond of black tiger shrimp (Penaeus monodon)","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Modeling the effect of nitrogen input from feed on the nitrogen dynamics in an enclosed intensive culture pond of black tiger shrimp (Penaeus monodon)"}]},"item_type_id":"4","owner":"1","path":["7183","7181"],"pubdate":{"attribute_name":"公開日","attribute_value":"2012-05-25"},"publish_date":"2012-05-25","publish_status":"0","recid":"40640","relation_version_is_last":true,"title":["Modeling the effect of nitrogen input from feed on the nitrogen dynamics in an enclosed intensive culture pond of black tiger shrimp (Penaeus monodon)"],"weko_creator_id":"1","weko_shared_id":null},"updated":"2022-12-19T04:15:57.899292+00:00"}