2004
DOI: 10.1128/aem.70.3.1494-1505.2004
|View full text |Cite
|
Sign up to set email alerts
|

Microbial Biogeography along an Estuarine Salinity Gradient: Combined Influences of Bacterial Growth and Residence Time

Abstract: Shifts in bacterioplankton community composition along the salinity gradient of the Parker River estuary and Plum Island Sound, in northeastern Massachusetts, were related to residence time and bacterial community doubling time in spring, summer, and fall seasons. Bacterial community composition was characterized with denaturing gradient gel electrophoresis (DGGE) of PCR-amplified 16S ribosomal DNA. Average community doubling time was calculated from bacterial production ([ 14 C]leucine incorporation) and bact… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
1
1
1
1

Citation Types

33
355
0
1

Year Published

2006
2006
2024
2024

Publication Types

Select...
8
1

Relationship

1
8

Authors

Journals

citations
Cited by 413 publications
(389 citation statements)
references
References 45 publications
33
355
0
1
Order By: Relevance
“…They are often the dominant fraction in freshwater lakes, whereas they are nearly absent in the marine environment (Methé et al 1998) and have been considered as a tracer of terrigenous inputs in coastal studies (Hobbie 1988). Clone library analysis of β-Proteobacteria in a temperate latitude estuary showed that they were identical to clones from groundwater, freshwater sediments and soils (Crump et al 2004). Strongly freshwater-influenced marine sites can have relatively large proportions of these taxa, e.g.…”
Section: Discussionmentioning
confidence: 99%
“…They are often the dominant fraction in freshwater lakes, whereas they are nearly absent in the marine environment (Methé et al 1998) and have been considered as a tracer of terrigenous inputs in coastal studies (Hobbie 1988). Clone library analysis of β-Proteobacteria in a temperate latitude estuary showed that they were identical to clones from groundwater, freshwater sediments and soils (Crump et al 2004). Strongly freshwater-influenced marine sites can have relatively large proportions of these taxa, e.g.…”
Section: Discussionmentioning
confidence: 99%
“…To what extent our results are applicable to lakes with higher productivity or to lakes outside the boreal zone is an open question. However, a dependence of bacterioplankton community composition on the hydrological retention time was recently demonstrated for estuaries (Crump et al 2004). These results indicate that bacterial external control can be of considerable importance in widely different aquatic environments.…”
Section: Notesmentioning
confidence: 99%
“…Thus, lakes today are more often ecologically regarded as a part of a larger unit, i.e., the drainage basin (Soranno et al 1999). Still, efforts in lake microbial ecology and diversity have largely focused on within-lake selective forces, rather than external influences on community structure and diversity, although it has been shown that lake (Crump et al 2003;Masin et al 2003; Lindström and Bergström 2004) and estuarine (Crump et al 2004) community compositions can be largely influenced by inflowing bacteria. It can be assumed that the degree of isolation a lake bacterioplankton community experiences, and thereby the degree of influence by inflowing bacteria on local community structure, depends on the hydrological retention time of the lakes.…”
mentioning
confidence: 99%
“…While this may seem somewhat arbitrary, there is very little data available on the biodegradability of DOM discharged by rivers into estuaries and the few studies that have reported on the bioavailability of this DOM have shown that it is highly variable (0-73%) and dependent on hydrological processes in the watershed (Cauwet, 2002). In addition, it also appears that the estuarine turbidity maximum, which is upstream of station CB3.3C, can be a source of DOM, especially during the summer (Fisher et al, 1998) and thus may provide this station with "new" DOM that may be readily degradable by the unique communities of bacteria that develop in the middle of estuaries (Crump et al, 2004). Setting the bioavailability of inflowing DOM during the tuning process also allowed us to better constrain these parameters using the model results (i.e., inflowing DOM bioavailability must be near these values for the model to achieve a reasonable solution).…”
Section: Dissolved Organic Mattermentioning
confidence: 99%