中国科学院南海海洋研究所机构知识库
Advanced  
SCSIO OpenIR  > 海洋微食物网高被引文献  > 期刊论文
学科主题: Environmental Sciences & Ecology; Marine & Freshwater Biology; Oceanography
题名: Diel variations in bacterial heterotrophic activity and growth in the northwestern Mediterranean Sea
作者: Gasol, JM ; Doval, MD ; Pinhassi, J ; Calderon-Paz, JI ; Guixa-Boixareu, N ; Vaque, D ; Pedros-Alio, C
关键词: bacterial production ; Mediterranean ; Diel cycles ; DOC diel changes ; nucleoid-containing bacteria ; bacterial carbon conversion efficiencies
刊名: MARINE ECOLOGY-PROGRESS SERIES
发表日期: 1998-01-01
卷: 164, 页:107-124
部门归属: CSIC, Inst Ciencies Mar, E-08039 Barcelona, Spain; CSIC, Inst Invest Marinas, E-36208 Vigo, Spain; Umea Univ, Dept Microbiol, S-90187 Umea, Sweden
英文摘要: Primary producers must respond to the diel changes in light availability. Therefore, detection of diel cycles in bacterial activity would imply tight coupling between the production of photosynthetic dissolved organic carbon (DOC) and its consumption by bacteria. Absence of diel cycles, on the contrary, would indicate that bacteria depend largely upon allochthonous organic carbon and that bacteria are not tightly dependent on photosynthetically produced autochthonous carbon. In 1993 and 1994 we sampled 3 sites in the NW Mediterranean Sea several times a day, and measured several microbial parameters as well as the vertical profiles of DOC along the diel cycle. The sites were selected so that one was on the continental shelf and, thus, was more influenced by coastal runoff; a second one was over the shelf slope and a third, oceanic one was located further offshore over a depth of 2000 m. We found clear diel cycles in bacterial total and specific activity always in the oceanic stations and sometimes in the shelf slope stations. Diel changes were detected as changes in both DNA and protein synthesis rates. These diel cycles were accompanied by diel changes in the distribution of total DOG, and by diel changes in the proportion of bacteria containing visible nucleoids. Noon estimates of bacterial activity were more than twice the daily average in the oceanic site, but they were less different in the other 2 sites. DOC changed daily by 15 mu M (5 to 15 % of the total stock). For bacterial activity to explain the diel changes in DOC concentration, bacteria should have growth efficiencies lower than 10% in general, and lower than 2% in the oceanic station.
语种: 英语
原文出处: 查看原文
内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/9344
Appears in Collections:海洋微食物网高被引文献_期刊论文

Files in This Item: Download All
File Name/ File Size Content Type Version Access License
Diel variations in bacterial heterotrophic activity and growth in the northwestern Mediterranean Sea.pdf(1791KB)----开放获取--View Download

Recommended Citation:
Gasol, JM; Doval, MD; Pinhassi, J; Calderon-Paz, JI; Guixa-Boixareu, N; Vaque, D; Pedros-Alio, C.Diel variations in bacterial heterotrophic activity and growth in the northwestern Mediterranean Sea,MARINE ECOLOGY-PROGRESS SERIES,1998,164():107-124
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Gasol, JM]'s Articles
[Doval, MD]'s Articles
[Pinhassi, J]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Gasol, JM]‘s Articles
[Doval, MD]‘s Articles
[Pinhassi, J]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit
文件名: Diel variations in bacterial heterotrophic activity and growth in the northwestern Mediterranean Sea.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Copyright © 2007-2017  中国科学院南海海洋研究所 - Feedback
Powered by CSpace