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It has a maximum depth of 6.5 m, a mean depth of 4.1 m, a surface area of 13.3 km3 and a volume of 0.06 km2. In the recent twenty years the lake has been eutrophicating year and year, and water pollntion was had the tendency of progressing. So that the awful water bloom of blue-green algae has come to appear every summer. (2) Annual changes in monthly fish yields, money amounts for them and units of price of each fish kind were showed from 1932 to 1940, before the II World War and from 1950 to 1980, the postwar. The highest value of monthly yields of total fishes during the past 40 years above mentioned, was 312 ton in Mar. 1934, that of fishes only (except molluscs and shrimps) 80 tons in Apr. 1975, molluscs 294 tons in Mar. 1934 and shrimps 12.5 tons in Nov. 1939. (3) In monthly changes in fish yields during the past 40 years, the seasonal patterns of total fishes, fishes only, molluscs, Hypomesus, Gnathopogon ・ Psendorasbora, Viviparidae and Unionidae were seen as typically bimodal with the spring and fall maxima, Carassius and Gobiidae with the spring and summer ones, and shrimps with the summer and winter ones. The seasonal patterns of Cyprinus, Sarcocheilichthys and Tribolodon were showed as unimodal with the early spring maximum, Oncorhynchus, Pseudogobio and Parasilurus with the late spring one, Anguilla and Zacco with the early summer one, and Plecoglossus, Pseudoperilamps ・ Rhodeus and Cobitidae with the summer one. In the pre-war, fishes only, Hypomesus, Carassius and shrimps showed unimodal patterns with the winter maximum, and Cobitidae did bimodal with the spring and summer maxima, and Tribolodon with the spring and winter ones. (4) The largest values of monthly yields of each kind of all fishes during the past 40 years indicated the range from 0.23 to 72.8 tons, and the decreasing order of them were as follows: Hypomesus \u003e Pseudoperilamps ・ Rhodeus \u003e Carassius \u003e Cyprinus \u003e Zacco \u003e Gnathopogon ・ Pseudorasbora \u003e Gobiidae \u003e Parasilurus \u003e Cobitidae \u003e Anguilla \u003e Sarcocheilichthys \u003e Tribolodon \u003e Oncorhynchus \u003e Precoglossus \u003e Pseudogobio ; those of molluscs did the range from 22.3 to 1,287.1 tons; the decreasing order of them being Unionidae \u003e Viviparidae \u003e Corbiculidae. (5) The highest value of monthly money amounts for total fish yields was 43,473 yen in Dec. 1932, the pre-war and 30,462 × 10 3 yen in Dec. 1975, the post-war. The largest values of each kind of fishes showed the range from 17 to 37,498 yen in the pre-war, and from 26 × 10 3 to 25,559 × 10 3 yen in the post-war, the decreasing order of them were as follows; Hypomesus \u003e Carassius \u003e Cyprinus \u003e Shrimps \u003e Viviparidae \u003e Pseudoperilamps ・ Rhodeus \u003e Cobitidae \u003e Gnathopogon ・ Pseudorasbora\u003e Sarcocheilichthys \u003e Corbiculidae \u003e Parasilurus \u003e Gobiidae \u003e Anguilla \u003e Unionidae \u003e Zacco \u003e Plecoglossus \u003e Oncorhynchus \u003e Tribolodon. (6) In the highest value of monthly unit of price of each fish kind, the largest was 5.28 yen of Plecoglossus and the smallest 0.17 yen of Viviparidae in the pre-war; the former being 750 yen of Anguilla, the latter 0.10 yen of viviparidae in 1950\u0027s; 1,633 yen of Hypomesus and 133 yen of Unionidae in 1960\u0027s; 2,818 yen of shrimps and 250 yen of Unionidae in 1970\u0027s respectively. (7) In monthly changes of unit price of each fish kind during the past 40 years, the seasonal patterns of Oncorhynchus and Zacco were seen as bimodal with the spring and fall maxima, Parasilurus with the summer and winter ones, Gobiidae with the spring and winter ones. On the other hand those of Zacco and Cyprinus were showed as unimodal with spring muximum; Plecoglossus, Pseudoperilamps ・ Rhodeus, Viviparidae with the summer one, Hypomesus with the fall one, and Gnathopogon ・ Pseudorasbora, Sarcocheilichthys, Tribolodon, Carassius, Corbiculidae and Unionidae with the winter one.", "subitem_description_type": "Abstract"}]}, "item_10_description_30": {"attribute_name": "資源タイプ(コンテンツの種類)", "attribute_value_mlt": [{"subitem_description": "Article", "subitem_description_type": "Other"}]}, "item_10_description_31": {"attribute_name": "フォーマット:mimeタイプ", "attribute_value_mlt": [{"subitem_description": "application/pdf", "subitem_description_type": "Other"}]}, "item_10_description_5": {"attribute_name": "引用", "attribute_value_mlt": [{"subitem_description": "信州大学理学部付属諏訪臨湖実験所報告 5: 1-105(1984)", "subitem_description_type": "Other"}]}, "item_10_publisher_4": {"attribute_name": "出版者", "attribute_value_mlt": [{"subitem_publisher": "信州大学理学部"}]}, "item_10_select_64": {"attribute_name": "著者版フラグ", "attribute_value_mlt": [{"subitem_select_item": "publisher"}]}, "item_10_source_id_40": {"attribute_name": "書誌レコードID", "attribute_value_mlt": [{"subitem_source_identifier": "AN00089817", "subitem_source_identifier_type": "NCID"}]}, "item_10_text_66": {"attribute_name": "sortkey", "attribute_value_mlt": [{"subitem_text_value": "01"}]}, "item_1627890569677": {"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": [{"creatorNames": [{"creatorName": "倉沢, 秀夫", "creatorNameLang": "ja"}], "nameIdentifiers": [{"nameIdentifier": "47046", "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": "2015-09-28"}], "displaytype": "detail", "download_preview_message": "", "file_order": 0, "filename": "Suwa05-01.pdf", "filesize": [{"value": "10.7 MB"}], "format": "application/pdf", "future_date_message": "", "is_thumbnail": false, "licensetype": "license_note", "mimetype": "application/pdf", "size": 10700000.0, "url": {"label": "Suwa05-01.pdf", "url": "https://soar-ir.repo.nii.ac.jp/record/16457/files/Suwa05-01.pdf"}, "version_id": "6ba7b614-37a2-4c0d-82d5-b48bec4f7274"}]}, "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": "departmental bulletin paper", "resourceuri": "http://purl.org/coar/resource_type/c_6501"}]}, "item_title": "諏訪湖の漁獲量およびその出荷金額高の経年季節変化(1932~1940年間,1950~1980年間) -諏訪湖漁業協同組合および其の他の資料による-", "item_titles": {"attribute_name": "タイトル", "attribute_value_mlt": [{"subitem_title": "諏訪湖の漁獲量およびその出荷金額高の経年季節変化(1932~1940年間,1950~1980年間) -諏訪湖漁業協同組合および其の他の資料による-", "subitem_title_language": "ja"}, {"subitem_title": "The Annual Transitions in Monthly Yields of Commercial Fishes and Monthly Amounts of Money for them in Lake Suwa from 1932 to 1940 and 1950 to 1980 -by the Data of Suwako Fisheries Cooporative Associations and Others-", "subitem_title_language": "en"}]}, "item_type_id": "10", "owner": "1", "path": ["1616"], "permalink_uri": "http://hdl.handle.net/10091/1931", "pubdate": {"attribute_name": "PubDate", "attribute_value": "2009-02-27"}, "publish_date": "2009-02-27", "publish_status": "0", "recid": "16457", "relation": {}, "relation_version_is_last": true, "title": ["諏訪湖の漁獲量およびその出荷金額高の経年季節変化(1932~1940年間,1950~1980年間) -諏訪湖漁業協同組合および其の他の資料による-"], "weko_shared_id": -1}
諏訪湖の漁獲量およびその出荷金額高の経年季節変化(1932~1940年間,1950~1980年間) -諏訪湖漁業協同組合および其の他の資料による-
http://hdl.handle.net/10091/1931
http://hdl.handle.net/10091/1931baee5de1-810e-481f-a386-0752193f93da
名前 / ファイル | ライセンス | アクション |
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Suwa05-01.pdf (10.7 MB)
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2009-02-27 | |||||
タイトル | ||||||
言語 | ja | |||||
タイトル | 諏訪湖の漁獲量およびその出荷金額高の経年季節変化(1932~1940年間,1950~1980年間) -諏訪湖漁業協同組合および其の他の資料による- | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | The Annual Transitions in Monthly Yields of Commercial Fishes and Monthly Amounts of Money for them in Lake Suwa from 1932 to 1940 and 1950 to 1980 -by the Data of Suwako Fisheries Cooporative Associations and Others- | |||||
言語 | ||||||
言語 | jpn | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | departmental bulletin paper | |||||
著者 |
倉沢, 秀夫
× 倉沢, 秀夫 |
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出版者 | ||||||
出版者 | 信州大学理学部 | |||||
引用 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 信州大学理学部付属諏訪臨湖実験所報告 5: 1-105(1984) | |||||
書誌情報 |
信州大学理学部付属諏訪臨湖実験所報告 巻 5, p. 1-105, 発行日 1984-03 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | (1) Lake Suwa is one of the lakes which have the highest landing yield of commercial fishes per unit area in Japan. It is the shallow eutrophic lake located at the altitnde 759 m in Nagano Prefecture in Central Japan. It has a maximum depth of 6.5 m, a mean depth of 4.1 m, a surface area of 13.3 km3 and a volume of 0.06 km2. In the recent twenty years the lake has been eutrophicating year and year, and water pollntion was had the tendency of progressing. So that the awful water bloom of blue-green algae has come to appear every summer. (2) Annual changes in monthly fish yields, money amounts for them and units of price of each fish kind were showed from 1932 to 1940, before the II World War and from 1950 to 1980, the postwar. The highest value of monthly yields of total fishes during the past 40 years above mentioned, was 312 ton in Mar. 1934, that of fishes only (except molluscs and shrimps) 80 tons in Apr. 1975, molluscs 294 tons in Mar. 1934 and shrimps 12.5 tons in Nov. 1939. (3) In monthly changes in fish yields during the past 40 years, the seasonal patterns of total fishes, fishes only, molluscs, Hypomesus, Gnathopogon ・ Psendorasbora, Viviparidae and Unionidae were seen as typically bimodal with the spring and fall maxima, Carassius and Gobiidae with the spring and summer ones, and shrimps with the summer and winter ones. The seasonal patterns of Cyprinus, Sarcocheilichthys and Tribolodon were showed as unimodal with the early spring maximum, Oncorhynchus, Pseudogobio and Parasilurus with the late spring one, Anguilla and Zacco with the early summer one, and Plecoglossus, Pseudoperilamps ・ Rhodeus and Cobitidae with the summer one. In the pre-war, fishes only, Hypomesus, Carassius and shrimps showed unimodal patterns with the winter maximum, and Cobitidae did bimodal with the spring and summer maxima, and Tribolodon with the spring and winter ones. (4) The largest values of monthly yields of each kind of all fishes during the past 40 years indicated the range from 0.23 to 72.8 tons, and the decreasing order of them were as follows: Hypomesus > Pseudoperilamps ・ Rhodeus > Carassius > Cyprinus > Zacco > Gnathopogon ・ Pseudorasbora > Gobiidae > Parasilurus > Cobitidae > Anguilla > Sarcocheilichthys > Tribolodon > Oncorhynchus > Precoglossus > Pseudogobio ; those of molluscs did the range from 22.3 to 1,287.1 tons; the decreasing order of them being Unionidae > Viviparidae > Corbiculidae. (5) The highest value of monthly money amounts for total fish yields was 43,473 yen in Dec. 1932, the pre-war and 30,462 × 10 3 yen in Dec. 1975, the post-war. The largest values of each kind of fishes showed the range from 17 to 37,498 yen in the pre-war, and from 26 × 10 3 to 25,559 × 10 3 yen in the post-war, the decreasing order of them were as follows; Hypomesus > Carassius > Cyprinus > Shrimps > Viviparidae > Pseudoperilamps ・ Rhodeus > Cobitidae > Gnathopogon ・ Pseudorasbora> Sarcocheilichthys > Corbiculidae > Parasilurus > Gobiidae > Anguilla > Unionidae > Zacco > Plecoglossus > Oncorhynchus > Tribolodon. (6) In the highest value of monthly unit of price of each fish kind, the largest was 5.28 yen of Plecoglossus and the smallest 0.17 yen of Viviparidae in the pre-war; the former being 750 yen of Anguilla, the latter 0.10 yen of viviparidae in 1950's; 1,633 yen of Hypomesus and 133 yen of Unionidae in 1960's; 2,818 yen of shrimps and 250 yen of Unionidae in 1970's respectively. (7) In monthly changes of unit price of each fish kind during the past 40 years, the seasonal patterns of Oncorhynchus and Zacco were seen as bimodal with the spring and fall maxima, Parasilurus with the summer and winter ones, Gobiidae with the spring and winter ones. On the other hand those of Zacco and Cyprinus were showed as unimodal with spring muximum; Plecoglossus, Pseudoperilamps ・ Rhodeus, Viviparidae with the summer one, Hypomesus with the fall one, and Gnathopogon ・ Pseudorasbora, Sarcocheilichthys, Tribolodon, Carassius, Corbiculidae and Unionidae with the winter one. | |||||
資源タイプ(コンテンツの種類) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Article | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AN00089817 | |||||
出版タイプ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 |