| Item type |
紀要論文 / Departmental Bulletin Paper(1) |
| 公開日 |
2010-02-05 |
| タイトル |
|
|
タイトル |
Relationship between watershed environments and growth of coastal diatoms |
| 言語 |
|
|
言語 |
eng |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
Diatom |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
fulvic acid-like Fe |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
land use |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
sea production |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
Skeletonema |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
water quality |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
watershed |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
departmental bulletin paper |
| 著者 |
SAIGUSA, Masahiko
KUNII, Daisuke
SAITO, Genya
|
| 抄録 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
Effect of watershed environments on river water quality and the subsequent influence of water quality on the growth of diatoms in coastal seawater were studied. Land use in the upper and lower site of the Ohkawa River (O-up and O-low) and the upper site of the Nanakita River (N-up) were dominated by forestry, whereas the lower site of the Nanakita River (N-low) was characterized by urbanization. Seasonal changes in nutrients in the Ohkawa and Nanakita Rivers suggested that the concentrations of NH_4-N, NO_3-N, PO_4-P and acid extractable-Fe were influenced by human activities, while Si concentration reflected geological conditions. The average concentrations of fulvic acid-like Fe (FA-Fe), closely associated with the growth of coastal diatoms, were 1 and 16μgL^<-1> at the O-up and O-low sites, respectively, while those of the Nanakita River were 5μgL^<-1> (N-up) and 53μgL^<-1> (N-low). For each river, FA-Fe concentrations of the lower sites were much higher than the upper sites. Moreover, the concentration of FA-Fe at N-low was much higher than at O-low. Therefore, it was concluded that FA-Fe originates not only from forest vegetation but also from urban activity. The growth of the Skeletonema, a typical diatom of coastal waters, was stimulated by the addition of O-low river water compared to addition of O-up, reflecting the FA-Fe content. Diatom growth stimulation with the addition of lower river water was much more prominent in the Nanakita River, whose watershed is characterized by runoff from Sendai city. |
| 内容記述 |
|
|
内容記述タイプ |
Other |
|
内容記述 |
Original Paper |
| 書誌情報 |
Journal of Integrated Field Science
巻 4,
p. 79-85,
発行日 2007-03
|
| ISSN |
|
|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
2433-6122 |
| 書誌レコードID |
|
|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA12005506 |
| フォーマット |
|
|
内容記述タイプ |
Other |
|
内容記述 |
application/pdf |
| 著者版フラグ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 出版者 |
|
|
出版者 |
Field Science Center, Graduate School of Agricultural Science, Tohoku University |
| 資源タイプ |
|
|
内容記述タイプ |
Other |
|
内容記述 |
紀要類 |
| 登録日 |
|
|
日付 |
2010-02-05 |
|
日付タイプ |
Created |
| 公開日（投稿完了日） |
|
|
日付 |
2010-02-05 |
|
日付タイプ |
Created |
| 発行日 |
|
|
日付 |
2007-03 |
|
日付タイプ |
Created |
| フォーマット |
|
|
内容記述タイプ |
Other |
|
内容記述 |
789991 bytes |
| 著者所属 |
|
|
値 |
Field Science Center, Tohoku University / Field Science Center, Tohoku University / Graduate School of Agriculture Science, Tohoku University |
| 更新日 |
|
|
日付 |
2018-01-04 |
|
日付タイプ |
Created |
KJ00004863527.pdf (790.0 kB)
