National Taiwan Ocean University Institutional Repository:Item 987654321/51098
English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 28595/40626
造访人次 : 4206337      在线人数 : 59
RC Version 4.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
搜寻范围 进阶搜寻

jsp.display-item.identifier=請使用永久網址來引用或連結此文件: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/51098

题名: Growth-controlling mechanisms on heterotrophic bacteria in the South China Sea shelf: Summer and Winter patterns
作者: Eleanor Austria
Chao-Chen Lai
Chia-Ying Ko
Kuo-Yuan Lee
Hsiang-Yi Kuo
Tzong-Yueh Chen
Jen-Hua Tai
Fuh-Kwo Shiah
贡献者: 國立臺灣海洋大學:海洋環境與生態研究所
关键词: Bacteria
Continental shelf
DOC
cal shelf-sea
Microbial loop
Primary production
South China Sea
Tropi
日期: 2018-08
上传时间: 2018-11-12T06:00:53Z
出版者: Terrestrial, Atmospheric and Oceanic Sciences
摘要: Abstract: Mechanisms in controlling the growth of heterotrophic bacteria have seldom
been explored in the tropical South China Sea (SCS). This study reports the tempospatial
distribution patterns and the controlling mechanisms of bacterial biomass
(BB), production (BP), and specific growth rate (Bμ) from one summer (Jun 2010;
4 transects) and two winter (January and December 2011; one transect each) cruises
along the northern SCS-shelf. In summer, all three bacterial variables showed strong
gradients with greater readings at the inner-shelf then decreasing seaward. The positive
correlations of bacterial production rate (BP) and bacterial specific growth rate
(Bμ), with primary production (PP), chlorophyll-a, and dissolved organic carbon observed
in summer indicate a high possibility of bottom-up (substrate supply) control.
Positive bacterial temperature response was observed in the inner to mid-shelf area in
winter. There, Bμ changed proportionally with temperature up to ca. 22°C. The Q10
(the increase of reaction rate for a temperature rise of 10°C) for Bμ was ~4.0, which
was in the range reported by coastal studies. Very high BP/PP ratios (summer average:
89 ± 92%; winter average: 131 ± 88%) indicated bacteria carbon demand relied heavily
on allochthonous organic carbon sources such as river input and re-suspension
processes, and that the SCS-shelf might be net heterotrophic in these two seasons.
In winter, BP/PP ratios changed positively with temperature in areas inside the midshelf,
suggesting that the coastal zone might become a stronger CO2 source during
cold season under a warming climate, if anthropogenic loadings of inorganic nutrients
and organic matter remain high in the future.
關聯: 29(4) pp.441-453
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/51098
显示于类别:[海洋環境與生態研究所] 期刊論文

文件中的档案:

档案 描述 大小格式浏览次数
index.html0KbHTML41检视/开启


在NTOUR中所有的数据项都受到原著作权保护.

 


著作權政策宣告: 本網站之內容為國立臺灣海洋大學所收錄之機構典藏,無償提供學術研究與公眾教育等公益性使用,請合理使用本網站之內容,以尊重著作權人之權益。
網站維護: 海大圖資處 圖書系統組
DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - 回馈