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GCE-LTER Data Set Summary
Accession:
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BCT-GCEM-0511e
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Research Theme:
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Bacterial Productivity (Monitoring)
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Contributors:
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Robert E. Hodson, Jen Mou, Ed Sheppard
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Title:
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May 2004 surface water bacterial abundance at ten Georgia Coastal Ecosystems LTER sampling sites
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Abstract:
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Surface water samples were collected during low tide surveys near ten Georgia Coastal Ecosystem LTER sampling sites in May, 2004. Unfiltered subsamples were immediately preserved with buffered formalin and refrigerated for transport to the laboratory. The abundance of bacteria in each sample was determined using an epifluorescence microscope by counting DAPI-stained cells retained on a 0.2µm polycarbonate filter. This study was part of the GCE-LTER hydrographic monitoring program, and will be repeated quarterly.
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DOI:
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10.6073/pasta/637e2cd23dc11813e1c4dcf338bfaa3a
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Key Words:
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abundance, bacteria, bacterial abundance, bacterial production, microbial, Microbial Populations, water column
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LTER Core Area:
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Population Studies
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Research Themes:
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Bacterial Productivity |
Study Period:
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28-May-2004 to 30-May-2004
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Study Sites:
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GCE1 -- Eulonia, Georgia, USA
GCE2 -- Four Mile Island, Georgia, USA
GCE3 -- North Sapelo, Sapelo Island, Georgia, USA
GCE4 -- Meridian, Georgia, USA
GCE5 -- Folly River, Georgia, USA
GCE6 -- Dean Creek, Sapelo Island, Georgia, USA
GCE7 -- Carrs Island, Georgia, USA
GCE8 -- Alligator Creek, Georgia, USA
GCE9 -- Rockdedundy Island, Georgia, USA
GCE10 -- Hunt Camp, Sapelo Island, Georgia, USA
GCE-SP -- Sapelo River, Georgia, USA
GCE-DB -- Doboy Sound, Georgia, USA
GCE-AL -- Altamaha River, Georgia, USA
GCE-DP -- Duplin River, Georgia, USA
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Downloads:
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Data Table: BCT-GCEM-0511e (Main data table for data set BCT-GCEM-0511e, 30 records)
Access: Public (released 14-Nov-2005)
Metadata: Text (ESA FLED),
XML (Ecological Metadata Language)
Data Formats: Spreadsheet (CSV) [5.30kb], Text File [3.72kb], MATLAB (GCE Toolbox) [262.84kb], MATLAB (Variables) [167.21kb], Text Report [35.94kb]
Column List:(hide)
Column |
Name |
Units |
Type |
Description |
1 |
Cruise |
none |
string |
GCE-LTER research cruise identifier (LTER[MM][YY]) |
2 |
Date_Sampled |
yyyy-mm-dd |
string |
Date sample was collected |
3 |
Time_Sampled |
hh:mm GMT |
string |
Time sample was collected (GMT) |
4 |
Latitude |
decimal degrees |
floating-point |
Geographic latitude of sampling location |
5 |
Longitude |
decimal degrees |
floating-point |
Geographic longitude of sampling location |
6 |
Station |
none |
string |
Nearest nominal GCE-LTER CTD profiling station (1km geo-reference tolerance for station matching) |
7 |
Site |
none |
integer |
Closest nominal GCE sampling site |
8 |
Vessel |
none |
string |
Vessel from which the sample was collected |
9 |
CTD_Cast |
none |
string |
CTD cast number corresponding to the sample (na = not applicable) |
10 |
Depth_Sampled |
none |
string |
Nominal sampling depth |
11 |
Temperature |
°C |
floating-point |
Water temperature at the sampling location |
12 |
Flag_Temperature |
none |
string |
QA/QC flags for Water temperature at the sampling location (flagging criteria, where "x" is Temperature: x<10="Q", x>35="Q", x<-2="I") |
13 |
Salinity |
PSU |
floating-point |
Salinity of the water at the sampling location |
14 |
Flag_Salinity |
none |
string |
QA/QC flags for Salinity of the water at the sampling location (flagging criteria, where "x" is Salinity: x>36="Q", x<0="I") |
15 |
Tide |
none |
string |
Nominal tide stage when the sample was collected |
16 |
Volume |
ml |
floating-point |
Sample volume filtered |
17 |
Flag_Volume |
none |
string |
QA/QC flags for Sample volume filtered (flagging criteria, where "x" is Volume: x<0="I", x<0.1="Q", x>10="Q") |
18 |
Tower_Diameter |
mm |
floating-point |
Filter tower diameter |
19 |
Flag_Tower_Diameter |
none |
string |
QA/QC flags for Filter tower diameter (flagging criteria, where "x" is Tower_Diameter: x<0="I") |
20 |
Mean_Bact_Per_Field |
cells/field |
floating-point |
Mean bacteria per field for 10 microscope fields |
21 |
Flag_Mean_Bact_Per_Field |
none |
string |
QA/QC flags for Mean bacteria per field for 10 microscope fields (flagging criteria, where "x" is Mean_Bact_Per_Field: x<5="Q", x>300="Q", x<0="I") |
22 |
SD_Bact_Per_Field |
cells/field |
floating-point |
Standard deviation of replicate counts |
23 |
Flag_SD_Bact_Per_Field |
none |
string |
QA/QC flags for Standard deviation of replicate counts (flagging criteria, where "x" is SD_Bact_Per_Field: x<0="I") |
24 |
Bact_Abundance |
cells/ml |
exponential |
Bacterial abundance calculated from direct count and volume filtered |
25 |
Flag_Bact_Abundance |
none |
string |
QA/QC flags for Bacterial abundance calculated from direct count and volume filtered (flagging criteria, where "x" is Bact_Abundance: x<1e4="Q", x>1e7="Q", x<0="I", SD_Bact_Per_Field>(Mean_Bact_Per_Field).*0.5="Q") |
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Statistics:
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Generate script code to retrieve data tables for analysis in: MATLAB, R, SAS, SPSS |
Citation:
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Hodson, Robert E. 2005. May 2004 surface water bacterial abundance at ten Georgia Coastal Ecosystems LTER sampling sites. Georgia Coastal Ecosystems LTER Project, University of Georgia, Long Term Ecological Research Network. http://dx.doi.org/10.6073/pasta/637e2cd23dc11813e1c4dcf338bfaa3a
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