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Temperature and phosphorus regulating carbon flux through bacteria in a coastal marine system

Kritzberg, Emma LU ; Arrieta, Jesus M. and Duarte, Carlos M. (2010) In Aquatic Microbial Ecology 58(2). p.141-151
Abstract
The aim of this study was to explore the variation and regulation of bacterial carbon processing at a coastal oligotrophic site of the Island of Majorca in the Mediterranean Sea. In situ bacterial production (BP), respiration (BR), growth efficiency, and carbon demand in relation to environmental parameters were studied over an annual cycle. In addition, the response of bacterial carbon processing to an experimental resource (phosphate) and temperature manipulations was tested. While concentrations of dissolved organic carbon (DOC) and phosphorus were fairly stable over the year, BP and BR varied 65-fold and 79-fold, respectively. Addition of phosphate stimulated both BP and BR during most of the year, suggesting that phosphorus limitation... (More)
The aim of this study was to explore the variation and regulation of bacterial carbon processing at a coastal oligotrophic site of the Island of Majorca in the Mediterranean Sea. In situ bacterial production (BP), respiration (BR), growth efficiency, and carbon demand in relation to environmental parameters were studied over an annual cycle. In addition, the response of bacterial carbon processing to an experimental resource (phosphate) and temperature manipulations was tested. While concentrations of dissolved organic carbon (DOC) and phosphorus were fairly stable over the year, BP and BR varied 65-fold and 79-fold, respectively. Addition of phosphate stimulated both BP and BR during most of the year, suggesting that phosphorus limitation keeps a tight rein on bacterial DOC utilization. Both BP and BR responded positively to a 2 degrees C experimental increase, but at higher temperature increases BP and BR leveled off or decreased. In situ BP and BR were positively related to temperature, suggesting that elevated water temperature would yield increased BP and BR. BR responded more strongly to temperature than BP, suggesting that increased temperature may result in a decrease in bacterial growth efficiency. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
regulation, Temperature, Bacterial carbon processing, Bacterial growth efficiency, Resource regulation, Phosphorus limitation
in
Aquatic Microbial Ecology
volume
58
issue
2
pages
141 - 151
publisher
Inter-Research
external identifiers
  • wos:000274373200004
  • scopus:77952703763
ISSN
0948-3055
DOI
10.3354/ame01368
project
BECC
language
English
LU publication?
yes
id
1ce47813-d26c-4c2e-b48a-af97705ad795 (old id 1571206)
date added to LUP
2010-03-16 14:15:07
date last changed
2018-07-15 03:41:13
@article{1ce47813-d26c-4c2e-b48a-af97705ad795,
  abstract     = {The aim of this study was to explore the variation and regulation of bacterial carbon processing at a coastal oligotrophic site of the Island of Majorca in the Mediterranean Sea. In situ bacterial production (BP), respiration (BR), growth efficiency, and carbon demand in relation to environmental parameters were studied over an annual cycle. In addition, the response of bacterial carbon processing to an experimental resource (phosphate) and temperature manipulations was tested. While concentrations of dissolved organic carbon (DOC) and phosphorus were fairly stable over the year, BP and BR varied 65-fold and 79-fold, respectively. Addition of phosphate stimulated both BP and BR during most of the year, suggesting that phosphorus limitation keeps a tight rein on bacterial DOC utilization. Both BP and BR responded positively to a 2 degrees C experimental increase, but at higher temperature increases BP and BR leveled off or decreased. In situ BP and BR were positively related to temperature, suggesting that elevated water temperature would yield increased BP and BR. BR responded more strongly to temperature than BP, suggesting that increased temperature may result in a decrease in bacterial growth efficiency.},
  author       = {Kritzberg, Emma and Arrieta, Jesus M. and Duarte, Carlos M.},
  issn         = {0948-3055},
  keyword      = {regulation,Temperature,Bacterial carbon processing,Bacterial growth efficiency,Resource regulation,Phosphorus limitation},
  language     = {eng},
  number       = {2},
  pages        = {141--151},
  publisher    = {Inter-Research},
  series       = {Aquatic Microbial Ecology},
  title        = {Temperature and phosphorus regulating carbon flux through bacteria in a coastal marine system},
  url          = {http://dx.doi.org/10.3354/ame01368},
  volume       = {58},
  year         = {2010},
}