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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Sparganium americanum ： ウィキペディア英語版 Sparganium americanum ''Sparganium americanum'', American bur-reed, is a perennial plant found in the United States of America and Canada.〔http://plants.usda.gov/core/profile?symbol=SPAM ''Sparganium americanum'' Nutt. American bur-reed, United States Department of Agriculture Natural Resources Conservation Service〕 Though this species resembles a grass, it is a type of bur-reed. 〔http://www.aquascapesunlimited.com/index.cfm?fuseaction=plants.plantDetail&plant_id=102&typeID=2 ''Sparganium americanum''. Aquascapes Unlimited Inc.〕 This species is important for conservation purposes because it has the ability to remove nitrogen and phosphorus runoff from water, like many other wetland species. By doing this it protects waterways from excess nitrogen which can cause eutrophication. This increased nitrogen is especially a problem during the farmers’ growing season. During this same time frame the ''S. americanum'' is growing and taking up nitrogen. 〔Kao, Jenny T., John E. Titus, and Wei-Xing Zhu. 2003. Differential Nitrogen and Phosphorus Retention by Five Wetland Plant Species. ''Wetlands'' Vol. 23, No. 4: 979-987. DOI 10.1672/0277-5212(2003)023()2.0.CO;2. Accessed 4/30/14.〕 == Distribution == ''Sparganium americanum'' is located in marshes. American bur-reed grows from spring to fall in low marsh and shallow water (from 0 to 12 inches of water). 〔 ''Sparganium americanum'' is located in the United States of America and Canada. In the United States, American bur-reed is found in Alabama, Arkansas, Connecticut, Washington DC, Delaware, Florida, Georgia, Iowa, Illinois, Indiana, Kansas, Kentucky, Louisiana, Massachusetts, Maryland, Maine, Michigan, Missouri, Mississippi, North Carolina, North Dakota, New Jersey, New York, Ohio, Oklahoma, Pennsylvania, Rhode Island, South Carolina, Tennessee, Texas, Virginia, Vermont, Wisconsin, and West Virginia. In Canada American bur-reed can be found in Manitoba, New Brunswick, Newfoundland, Nova Scotia, Ontario, Prince Edward, and Quebec. 〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Sparganium americanum」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.