Mobile Bay Water Sampling and Hydrographic Profiles 1989-1999

Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator:
DISL: Pennock Lab
Publication_Date:
Unpublished material
Title:
Mobile Bay Water Sampling and Hydrographic Profiles 1989-1999
Geospatial_Data_Presentation_Form:
database
Description:
Abstract:
This dataset contains physical, chemical, and biological data collected during ten years of near-monthly shipboard surveys carried out in Mobile Bay between May 1989 and December 1999. Station locations ranged from the Mobile River delta to the mouth of Mobile Bay, from Bon Secour to the eastern part of Mississippi Sound, and outside Mobile Bay in the northern Gulf of Mexico. Hydrographic profiles and water samples were collected at each station.
Purpose:
To examine the effects of river discharge, suspended sediment dynamics, and nutrient inputs on phytoplankton production in the Mobile Bay ecosystem.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date:
19890525
Ending_Date:
19991208
Currentness_Reference:
ground condition
Status:
Progress:
Complete
Maintenance_and_Update_Frequency:
None Planned
Spatial_Domain:
Description_of_Geographic_Extent:
Mobile Bay, Alabama
Bounding_Coordinates:
West_Bounding_Coordinate:
-88.975
East_Bounding_Coordinate:
-87.709
North_Bounding_Coordinate:
30.643
South_Bounding_Coordinate:
30.043
Keywords:
Theme:
Theme_Keyword_Thesaurus:
ISO 19115 Topic Category
Theme_Keyword:
inlandWaters
Theme_Keyword:
oceans
Theme:
Theme_Keyword_Thesaurus:
None
Theme_Keyword:
water quality
Theme_Keyword:
shipboard surveys
Theme_Keyword:
hydrographic profiles
Theme_Keyword:
temperature
Theme_Keyword:
salinity
Theme_Keyword:
dissolved oxygen
Theme_Keyword:
pH
Theme_Keyword:
PAR
Theme_Keyword:
Secchi
Theme_Keyword:
water sampling
Theme_Keyword:
dissolved inorganic carbon
Theme_Keyword:
DIC
Theme_Keyword:
dissolved inorganic nutrients
Theme_Keyword:
dissolved organic carbon
Theme_Keyword:
DOC
Theme_Keyword:
phosphate
Theme_Keyword:
silicate
Theme_Keyword:
ammonium
Theme_Keyword:
nitrite
Theme_Keyword:
nitrate
Theme_Keyword:
dissolved organic nitrogen
Theme_Keyword:
DON
Theme_Keyword:
dissolved organic phosphorous
Theme_Keyword:
DOP
Theme_Keyword:
total dissolved nitrogen
Theme_Keyword:
TDN
Theme_Keyword:
total dissolved phosphate
Theme_Keyword:
TDP
Theme_Keyword:
suspended sediments
Theme_Keyword:
particulate carbon
Theme_Keyword:
PC
Theme_Keyword:
particulate nitrogen
Theme_Keyword:
PN
Theme_Keyword:
particulate phosphorous
Theme_Keyword:
PP
Theme_Keyword:
Chlorophyll a
Theme_Keyword:
primary productivity
Theme_Keyword:
phytoplankton production
Place:
Place_Keyword_Thesaurus:
None
Place_Keyword:
DISL
Place_Keyword:
Dauphin Island Sea Lab
Place_Keyword:
Mobile Bay
Place_Keyword:
Mobile River delta
Place_Keyword:
Bon Secour Bay
Place_Keyword:
Alabama
Access_Constraints:
Please contact DISL Data Management for access to the dataset.
Use_Constraints:
Acknowledgment of the Dauphin Island Sea Lab (DISL), Alabama Marine Environmental Sciences Consortium (MESC), Mississippi-Alabama Sea Grant, the United States Geological Survey, the Geological Survey of Alabama, the National Science Foundation/EPSCOR, and the University of Alabama is required in products developed from these data, and such acknowledgment as is standard for citation and legal practices for data source is expected by users of these data. Users should be aware that comparison with other data sets for the same area from other time periods may be inaccurate due to inconsistencies resulting from changes in mapping conventions, data collection, and computer processes over time. The distributor shall not be liable for improper or incorrect use of these data, based on the description of appropriate/inappropriate uses described in the metadata document. These data are not legal documents and are not to be used as such.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
Dauphin Island Sea Lab Data Management Center
Contact_Person:
Lei Hu
Contact_Position:
data manager
Contact_Address:
Address_Type:
mailing and physical
Address:
101 Bienville Blvd
City:
Dauphin Island
State_or_Province:
AL
Postal_Code:
36528
Country:
USA
Contact_Voice_Telephone:
251-861-2141 x 7533
Contact_Electronic_Mail_Address:
lhu@disl.org
Browse_Graphic:
Browse_Graphic_File_Name:
http://www.ncddc.noaa.gov/approved_recs/org/disl/JPennock/Lab_Work/CTD/Mobile_browse_MB-map1.pdf
Browse_Graphic_File_Description:
Map of Mobile Bay, Alabama, showing the locations of sampling stations from 1989 to 1993. Map is from DISL Technical Report 94-001.
Browse_Graphic_File_Type:
PDF
Browse_Graphic:
Browse_Graphic_File_Name:
http://www.ncddc.noaa.gov/approved_recs/org/disl/JPennock/Lab_Work/CTD/Mobile_browse1_MB-map2.pdf
Browse_Graphic_File_Description:
Map of Mobile Bay, Alabama, showing the locations of sampling stations from 1993 to 1995. Map is from DISL Technical Report 99-001.
Browse_Graphic_File_Type:
PDF
Browse_Graphic:
Browse_Graphic_File_Name:
http://www.ncddc.noaa.gov/approved_recs/org/disl/JPennock/Lab_Work/CTD/Mobile_browse2_MB-map3.pdf
Browse_Graphic_File_Description:
Map of Mobile Bay, Alabama, showing the locations of sampling stations from 1997 to 1999. Map is from DISL Technical Report 2002-001.
Browse_Graphic_File_Type:
PDF
Native_Data_Set_Environment:
Microsoft Access 2000
Cross_Reference:
Citation_Information:
Originator:
Jonathan R. Pennock
Originator:
Felix Fernandez
Originator:
William W. Schroeder
Publication_Date:
1994
Title:
Mobile Bay Data Report: MB-01 to MB-34 Cruises (May 1989 - January 1993)
Geospatial_Data_Presentation_Form:
document
Other_Citation_Details:
Dauphin Island Sea Lab Technical Report 94-001
Cross_Reference:
Citation_Information:
Originator:
Jonathan R. Pennock
Originator:
William W. Schroeder
Originator:
John C. Lehrter
Originator:
Jean L.W. Cowan
Originator:
Fennel Blythe
Publication_Date:
1999
Title:
Mobile Bay Data Report: MB-35 to MB-58 Cruises (July 1993 - August 1995)
Geospatial_Data_Presentation_Form:
document
Other_Citation_Details:
Dauphin Island Sea Lab Technical Report 99-001
Cross_Reference:
Citation_Information:
Originator:
Jonathan R. Pennock
Originator:
Chad Lopez
Originator:
Jean L.W. Cowan
Originator:
Fennel Blythe
Originator:
Leslie J. Gallagher
Publication_Date:
2002
Title:
Mobile Bay Data Report: MB-59 to MB-81 Cruises (December 1997 - December 1999)
Geospatial_Data_Presentation_Form:
document
Other_Citation_Details:
Dauphin Island Sea Lab Technical Report 2002-001
Back To Index
Data_Quality_Information:
Logical_Consistency_Report:
N/A
Completeness_Report:
This dataset is a comprehensive collection of data from over a decade of sampling within Mobile Bay, Alabama. Station locations and parameters of interest varied during the time period - not every parameter was measured at every station during every sampling event.
Lineage:
Methodology:
Methodology_Type:
Lab
Methodology_Identifier:
Methodology_Keyword_Thesaurus:
None
Methodology_Keyword:
D'Elia et al 1977
Methodology_Description:
Persulfate oxidation method of determining dissolved organic nitrogen
Methodology_Citation:
Citation_Information:
Originator:
C.F. D'Elia
Originator:
P.A. Steudler
Originator:
N. Corwin
Publication_Date:
1977
Title:
Determination of total nitrogen in aqueous samples using persulfate digestion
Geospatial_Data_Presentation_Form:
journal article
Series_Information:
Series_Name:
Limnology and Oceanography
Issue_Identification:
22:760-764
Methodology:
Methodology_Type:
Lab
Methodology_Identifier:
Methodology_Keyword_Thesaurus:
None
Methodology_Keyword:
Pennock and Sharp 1986
Methodology_Description:
Methods for measuring phytoplankton production
Methodology_Citation:
Citation_Information:
Originator:
J.P. Pennock
Originator:
J.H. Sharp
Publication_Date:
1986
Title:
Phytoplankton production in the Delaware Estuary: temporal and spatial variability
Geospatial_Data_Presentation_Form:
journal article
Series_Information:
Series_Name:
Marine Ecology Progress Series
Issue_Identification:
34:143-155
Methodology:
Methodology_Type:
Lab
Methodology_Identifier:
Methodology_Keyword_Thesaurus:
None
Methodology_Keyword:
Sharp 1974
Methodology_Description:
Methods for measuring particulate carbon and nitrogen
Methodology_Citation:
Citation_Information:
Originator:
J.H. Sharp
Publication_Date:
1974
Title:
Improved analysis for "particulate" organic carbon and nitrogen from seawater
Geospatial_Data_Presentation_Form:
journal article
Series_Information:
Series_Name:
Limnology and Oceanography
Issue_Identification:
19:984-989
Methodology:
Methodology_Type:
Lab
Methodology_Identifier:
Methodology_Keyword_Thesaurus:
None
Methodology_Keyword:
Solorzano and Sharp 1980
Methodology_Description:
Methods for measuring phosphorous
Methodology_Citation:
Citation_Information:
Originator:
L. Solorzano
Originator:
J.H. Sharp
Publication_Date:
1980
Title:
Determination of total phosphorous and particulate phosphorous in natural water
Geospatial_Data_Presentation_Form:
journal article
Series_Information:
Series_Name:
Limnology and Oceanography
Issue_Identification:
25:754-760
Methodology:
Methodology_Type:
Lab
Methodology_Identifier:
Methodology_Keyword_Thesaurus:
None
Methodology_Keyword:
Shimadzu 1991
Methodology_Description:
A Shimadzu TOC-5000 was used to measure dissolved inorganic carbon and dissolved organic carbon.
Methodology_Citation:
Citation_Information:
Originator:
Shimadzu Corporation
Publication_Date:
1991
Title:
Total organic carbon analyzer instrument manual
Geospatial_Data_Presentation_Form:
instruction manual
Publication_Information:
Publication_Place:
Columbia, Maryland
Publisher:
Shimadzu Corporation
Methodology:
Methodology_Type:
Lab
Methodology_Identifier:
Methodology_Keyword_Thesaurus:
None
Methodology_Keyword:
Strickland and Parsons 1972
Methodology_Description:
Methods for measuring dissolved inorganic nutrients, suspended sediments, and chlorophyll a
Methodology_Citation:
Citation_Information:
Originator:
J.D.H. Strickland
Originator:
T.R. Parsons
Publication_Date:
1972
Title:
A Practical Handbook for Seawater Analysis
Geospatial_Data_Presentation_Form:
book
Publication_Information:
Publication_Place:
Canada
Publisher:
Fisheries Research Board of Canada
Process_Step:
Process_Description:
Field Sampling - Hydrographic: A Hydrolab Surveyor II was used to collect hydrographic profiles of salinity, temperature, dissolved oxygen, and pH. These profiles were taken at discrete sampling depths and stored to memory until being downloaded upon return to the laboratory. In addition to the Hydrolab profiles, the underwater light regime was quantified using a LiCor Quantum Irradiance Meter fitted with a 3pi spherical deck and underwater sensors or, on a few occasions, a 20 cm secchi disk. LiCor profiles were carried out at 10 cm increments through the photic zone. The diffuse attenuation coefficient for PAR (k; m-1) was calculated for each station via regression of ln irradiance vs. depth for the entire subsurface profile after correction of irradiance for instantaneous variations in surface irradiance. Secchi measurements were estimated to the nearest 5 cm. Field Sampling - Discrete Water: 5-liter PVC Niskin bottles were deployed to collect water samples at the surface and one meter above the bottom at all stations. Upon sampling, 1 liter of water was collected into an acid washed, deionized water and sample rinsed 1-liter HDPE bottle. Samples were maintained in the dark on ice until return to the laboratory. Also, 1 liter of water for phytoplankton production experiments was collected in polycarbonate bottles and held at ambient temperature in the dark until processing. In addition, samples for dissolved inorganic carbon (DIC) were collected in glass scintillation vials, capped without air contamination, and returned to the laboratory for immediate analysis. Finally, 20 ml samples for phytoplankton taxonomy were collected and fixed with 2 drops of Lugol's Solution. Upon completion of water collection, temperature and salinity were measured in all discrete samples using an Orion temperature/conductivity probe with a resolution of 0.1 degrees C and 0.1 ppt. These latter discrete measurements are reported in this data set.
Process_Date:
Unknown
Process_Step:
Process_Description:
Laboratory Methods - Dissolved Matter: In the laboratory, samples were split into dissolved and particulate fractions using Whatman GF/C glass fiber filters that had been muffled (450 degrees C for 2 hours) to remove organic contamination. These filters have a nominal pore size of 1.2 um. Dissolved Inorganic Carbon (DIC): DIC was determined from samples for analysis using a Shimadzu TOC-5000 fitted with a non-dispersive IR detector. This instrument has a precision of +/-10 uM at a concentration of 1500 uM. Dissolved Inorganic Nutrients: Dissolved nutrients were measured in sample water filtered through a Whatman GF/C filter. Phosphate, ammonium, nitrate, nitrite, and silicate were analyzed by standard colorimetric methods (Strickland and Parsons, 1972) adapted for use on an Alpkem RFA/2 Autoanalyzer. Detection limits are 0.01 uM (NO3, NO2, PO4), 0.02 uM (NH4), and 0.05 uM (SiO2). Standard error for all measurements ranges from 2-3%. Dissolved Organic Carbon (DOC): DOC was determined in filtered (GF/C) sample water which was sealed in muffled glass scintillation vials and frozen until analysis using a Shimadzu TOC-5000. For analysis, the sample was acidified and sparged with zero-grade air to remove inorganic carbon and then analyzed to obtain the total organic carbon concentration. This method has a detection limit of 10uM and standard error of +/-5% at 300 uM. Dissolved Organic Nitrogen (DON): Total dissolved nitrogen (TDN) was analyzed on GF/C filtered samples following the persulfate oxidation method of D'Elia (1977). Inorganic N (NO3- + NO2-, NH4+) was subtracted from TDN to give DON. This method has a detection limit of 0.6 uM +/-1%. Dissolved Organic Phosphorus (DOP): Total dissolved phosphate (TDP) was determined by the high temperature combustion method of Solorozano and Sharp (1980). Inorganic PO4 was subtracted from TDP to give DOP. This method has a standard error of +/-5%.
Process_Date:
Unknown
Process_Step:
Process_Description:
Laboratory Methods - Particulate Matter: In the laboratory, samples were split into dissolved and particulate fractions using Whatman GF/C glass fiber filters that had been muffled (450 degrees C for 2 hours) to remove organic contamination. These filters have a nominal pore size of 1.2 um. Suspended Sediments: Total suspended sediments (inorganic sediment plus living and dead organic matter) was determined by passing a known volume of water through a pre-washed and pre-weighed 47 mm GF/C filter. After filtration, each filter was rinsed with deionized water to remove salts, dried at 50 degrees C, cooled and re-weighed following the methods of Strickland and Parsons (1972). This method has a detection limit of 0.1 mg l-1 with a standard error of +/-5%. Particulate Carbon and Nitrogen (PC/PN): PC and PN were measured on particulate matter collected on a 25mm GF/C filter via high temperature combustion (Sharp, 1974) using a Carlo-Erba NA 1500 Carbon-Nitrogen-Sulfur (CNS) analyzer fitted with a thermal conductivity detector. This method has a detection limit of 1.0 uM with a standard error of +/-5%. Particulate Phosphorous (PP): PP was determined by conversion of particulate phosphorous to dissolved inorganic phosphorous by high temperature combustion according to the method of Solorzano and Sharp (1980). This method has a detection limit of 1.0 uM with a standard error of +/-1%.
Process_Date:
Unknown
Process_Step:
Process_Description:
Laboratory Methods - Phytoplankton Biomass and Production: In the laboratory, samples were split into dissolved and particulate fractions using Whatman GF/C glass fiber filters that had been muffled (450 degrees C for 2 hours) to remove organic contamination. These filters have a nominal pore size of 1.2 um. Chlorophyll-a: Chlorophyll a was extracted on Whatman GF/C filters for 24 hours in cold 90% acetone and measured by fluorometry (Strickland and Parsons, 1972) to account for the presence of phaeopigments. The Turner Designs Model 10 fluorometer was calibrated with spectrophotometric measurements of pure chlorophyll a (Sigma Chemical). This method has a detection limit of 0.01 ug l-1 with a standard error of +/-5%. Phytoplankton Production: Phytoplankton production was measured by the incorporation of NaH14CO3 into particulate matter over 24-hour incubations at six light intensities (100, 57, 26, 9, 5, 1% ambient) using neutral density screen bags in a flow-through deck incubator (Pennock and Sharp, 1986). Incubations were terminated by filtering the particulate matter onto Whatman GF/C filters and rinsing with filtered ambient water. Filters were placed immediately into scintillation vials filled with 5 ml of Beckman Ready-Safe scintillation fluor and counted on a Packard Tri-Carb liquid scintillation counter. Maximum production per unit volume (mg C l-1 d-1) was determined using the maximum rate obtained from the 6 point light series. Areal production was determined by integrating the values obtained at each of the light levels by the light profile described by the diffuse attenuation coefficient, following the methods of Pennock and Sharp (1986).
Process_Date:
Unknown
Back To Index
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label:
TABLE: MB CRUISE DATA
Entity_Type_Definition:
A data table in the Microsoft Access 2000 file containing shipboard survey data from research cruises in Mobile Bay, Alabama, from 19890525 to 19991208. Data include physical, chemical, and biological parameters from the water column and bottom sediments. The MS Access file also contains other tables with subsets of data from the main table.
Entity_Type_Definition_Source:
DISL: Data Management
Attribute:
Attribute_Label:
CRUISE #
Attribute_Definition:
Cruise number.
Attribute_Definition_Source:
DISL: Data Management
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
1
Range_Domain_Maximum:
81
Attribute:
Attribute_Label:
STATION
Attribute_Definition:
Station where data were collected. Includes an identification and whether data were from the surface or bottom of the water column.
Attribute_Definition_Source:
DISL: Data Management
Attribute_Domain_Values:
Unrepresentable_Domain:
Station names are either a number or a code, for example BS, MR, FR. -S means surface sample, -B means bottom sample.
Attribute:
Attribute_Label:
GROUP
Attribute_Definition:
The part of the bay where data was obtained.
Attribute_Definition_Source:
DISL: Data Management
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:
UPPER
Enumerated_Domain_Value_Definition:
The upper, freshwater end of Mobile Bay.
Enumerated_Domain_Value_Definition_Source:
DISL: Data Management
Enumerated_Domain_Value:
LOWER
Enumerated_Domain_Value_Definition:
The middle part of Mobile Bay
Enumerated_Domain_Value_Definition_Source:
DISL: Data Management
Enumerated_Domain_Value:
COASTAL
Enumerated_Domain_Value_Definition:
The marine end of Mobile Bay, where exchange with saltwater occurs.
Enumerated_Domain_Value_Definition_Source:
DISL: Data Management
Attribute:
Attribute_Label:
DATE (mm/dd/yy)
Attribute_Definition:
Date of sample collection
Attribute_Definition_Source:
DISL: Data Management
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
5/25/1989
Range_Domain_Maximum:
12/8/1999
Attribute_Units_of_Measure:
mm/dd/yyyy
Attribute:
Attribute_Label:
SAMPLE DEPTH (m)
Attribute_Definition:
Depth from surface where the water sample was taken.
Attribute_Definition_Source:
DISL: Data Management
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
0.3
Range_Domain_Maximum:
19.5
Attribute_Units_of_Measure:
meter
Attribute:
Attribute_Label:
LOCAL TIME
Attribute_Definition:
The time that the sample was taken, either in U.S. Central Standard Time (CST) or U.S. Central Daylight Time (CDT).
Attribute_Definition_Source:
DISL: Data Management
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
10
Range_Domain_Maximum:
1640
Attribute_Units_of_Measure:
hhmm on a 24-hour clock
Attribute:
Attribute_Label:
LAT DEG
Attribute_Definition:
The degree latitude where the sample was taken.
Attribute_Definition_Source:
DISL: Data Management
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
30
Range_Domain_Maximum:
30
Attribute:
Attribute_Label:
LAT MIN
Attribute_Definition:
Minutes of latitude past the degree where the sample was taken.
Attribute_Definition_Source:
DISL: Data Management
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
2.6
Range_Domain_Maximum:
38.55
Attribute:
Attribute_Label:
LON DEG
Attribute_Definition:
The degree longitude where the sample was taken.
Attribute_Definition_Source:
DISL: Data Management
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
87
Range_Domain_Maximum:
88
Attribute:
Attribute_Label:
LON MIN
Attribute_Definition:
Minutes of longitude past the degree where the sample was taken.
Attribute_Definition_Source:
DISL: Data Management
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
0.03
Range_Domain_Maximum:
84
Attribute:
Attribute_Label:
LORAN X
Attribute_Definition:
The X component of the LORAN long-range radio navigation system.
Attribute_Definition_Source:
DISL: Data Management
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
12040.3
Range_Domain_Maximum:
58.47
Attribute:
Attribute_Label:
LORAN Y
Attribute_Definition:
The Y component of the LORAN long-range radio navigation system.
Attribute_Definition_Source:
DISL: Data Management
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
42092
Range_Domain_Maximum:
47676
Attribute:
Attribute_Label:
BOTTOM DEPTH (m)
Attribute_Definition:
Total depth of the water column where the water sample was taken.
Attribute_Definition_Source:
DISL: Data Management
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
0.8
Range_Domain_Maximum:
515.5
Attribute_Units_of_Measure:
meter
Attribute:
Attribute_Label:
SALINITY (ppt)
Attribute_Definition:
Salinity in parts per thousand.
Attribute_Definition_Source:
DISL: Data Management
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
0
Range_Domain_Maximum:
36.5
Attribute:
Attribute_Label:
TEMP (C)
Attribute_Definition:
Water temperature in Celsius
Attribute_Definition_Source:
DISL: Data Management
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
7.1
Range_Domain_Maximum:
32.8
Attribute_Units_of_Measure:
Celsius
Attribute:
Attribute_Label:
O2 (ppm)
Attribute_Definition:
Dissolved oxygen in parts per million
Attribute_Definition_Source:
DISL: Data Management
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
0.2
Range_Domain_Maximum:
14.2
Attribute_Units_of_Measure:
parts per million
Attribute:
Attribute_Label:
OSAT (%)
Attribute_Definition:
Percent oxygen saturation
Attribute_Definition_Source:
DISL: Data Management
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
3
Range_Domain_Maximum:
162
Attribute_Units_of_Measure:
percent
Attribute:
Attribute_Label:
pH
Attribute_Definition:
Water pH
Attribute_Definition_Source:
DISL: Data Management
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
2.3
Range_Domain_Maximum:
9.2
Attribute:
Attribute_Label:
NO3 + NO2 (uM)
Attribute_Definition:
Sum of nitrate and nitrite in micromole
Attribute_Definition_Source:
DISL: Data Management
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
-0.07
Range_Domain_Maximum:
51.41
Attribute_Units_of_Measure:
micromole
Attribute:
Attribute_Label:
NO3 (uM)
Attribute_Definition:
Nitrate concentration in micromole
Attribute_Definition_Source:
DISL: Data Management
Attribute_Domain_Values:
Unrepresentable_Domain:
This column is blank.
Attribute:
Attribute_Label:
NO2 (uM)
Attribute_Definition:
Nitrite concentration in micromole
Attribute_Definition_Source:
DISL: Data Management
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
0
Range_Domain_Maximum:
6.23
Attribute_Units_of_Measure:
micromole
Attribute:
Attribute_Label:
NH4 (uM)
Attribute_Definition:
Ammonium concentration in micromole
Attribute_Definition_Source:
DISL: Data Management
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
-0.02
Range_Domain_Maximum:
60.26
Attribute_Units_of_Measure:
micromole
Attribute:
Attribute_Label:
PO4 (uM)
Attribute_Definition:
Phosphate concentration in micromole
Attribute_Definition_Source:
DISL: Data Management
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
0
Range_Domain_Maximum:
11.08
Attribute_Units_of_Measure:
micromole
Attribute:
Attribute_Label:
SI (uM)
Attribute_Definition:
Silicate concentration in micromole
Attribute_Definition_Source:
DISL: Data Management
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
0
Range_Domain_Maximum:
141.01
Attribute_Units_of_Measure:
micromole
Attribute:
Attribute_Label:
DON (uM)
Attribute_Definition:
Dissolved organic nitrogen in micromole
Attribute_Definition_Source:
DISL: Data Management
Attribute_Domain_Values:
Unrepresentable_Domain:
This column is blank.
Attribute:
Attribute_Label:
TDN (uM)
Attribute_Definition:
Total dissolved nitrogen in micromole
Attribute_Definition_Source:
DISL: Data Management
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
2.96
Range_Domain_Maximum:
148.46
Attribute_Units_of_Measure:
micromole
Attribute:
Attribute_Label:
DOP (uM)
Attribute_Definition:
Dissolved organic phosphorus in micromole
Attribute_Definition_Source:
DISL: Data Management
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
0
Range_Domain_Maximum:
12.25
Attribute_Units_of_Measure:
micromole
Attribute:
Attribute_Label:
DOC (uM)
Attribute_Definition:
Dissolved organic carbon in micromole
Attribute_Definition_Source:
DISL: Data Management
Attribute_Domain_Values:
Unrepresentable_Domain:
This column is blank.
Attribute:
Attribute_Label:
TCO2 (uM)
Attribute_Definition:
Total carbon dioxide in micromole
Attribute_Definition_Source:
DISL: Data Management
Attribute_Domain_Values:
Unrepresentable_Domain:
This column is blank.
Attribute:
Attribute_Label:
PC (uM)
Attribute_Definition:
Particulate carbon in micromole
Attribute_Definition_Source:
DISL: Data Management
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
0
Range_Domain_Maximum:
733.61
Attribute_Units_of_Measure:
micromole
Attribute:
Attribute_Label:
PN (uM)
Attribute_Definition:
Particulate nitrogen in micromole
Attribute_Definition_Source:
DISL: Data Management
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
0
Range_Domain_Maximum:
98.53
Attribute_Units_of_Measure:
micromole
Attribute:
Attribute_Label:
PP (uM)
Attribute_Definition:
Particulate phosphorous in micromole
Attribute_Definition_Source:
DISL: Data Management
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
0.08
Range_Domain_Maximum:
4.96
Attribute_Units_of_Measure:
micromole
Attribute:
Attribute_Label:
TDP (uM)
Attribute_Definition:
Total dissolved phosphate in micromole
Attribute_Definition_Source:
DISL: Data Management
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
0.04
Range_Domain_Maximum:
12.78
Attribute_Units_of_Measure:
micromole
Attribute:
Attribute_Label:
SESTON (mg/l)
Attribute_Definition:
Amount of seston (microplankton, microdebris)
Attribute_Definition_Source:
DISL: Data Management
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
0.48
Range_Domain_Maximum:
390.7
Attribute_Units_of_Measure:
mg/l
Attribute:
Attribute_Label:
CHLORa (ug/l)
Attribute_Definition:
Chlorophyll a
Attribute_Definition_Source:
DISL: Data Management
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
0
Range_Domain_Maximum:
75.07
Attribute_Units_of_Measure:
ug/l
Attribute:
Attribute_Label:
ATTEN -(/m)
Attribute_Definition:
Beam attenuation
Attribute_Definition_Source:
DISL: Data Management
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
0.13
Range_Domain_Maximum:
11.33
Attribute_Units_of_Measure:
-(/m)
Attribute:
Attribute_Label:
SECCHI (cm)
Attribute_Definition:
Secchi depth
Attribute_Definition_Source:
DISL: Data Management
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
10
Range_Domain_Maximum:
880
Attribute_Units_of_Measure:
cm
Attribute:
Attribute_Label:
VPROD (mgC/l/d)
Attribute_Definition:
Primary productivity by volume
Attribute_Definition_Source:
DISL: Data Management
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
0.001
Range_Domain_Maximum:
4.960
Attribute_Units_of_Measure:
milligram carbon produced per liter per day
Attribute:
Attribute_Label:
APROD (gC/m^2/d)
Attribute_Definition:
Primary productivity by area
Attribute_Definition_Source:
DISL: Data Management
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
0.007
Range_Domain_Maximum:
7.32
Attribute_Units_of_Measure:
grams carbon produced per square meter per day
Attribute:
Attribute_Label:
TCO2 (ppm)
Attribute_Definition:
Total carbon dioxide in parts per million
Attribute_Definition_Source:
DISL: Data Management
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
5.9381
Range_Domain_Maximum:
26.219
Attribute:
Attribute_Label:
DOC (ppm)
Attribute_Definition:
Dissolved organic carbon in parts per million
Attribute_Definition_Source:
DISL: Data Management
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
1.088
Range_Domain_Maximum:
22.18
Attribute_Units_of_Measure:
parts per million
Attribute:
Attribute_Label:
RECORD #
Attribute_Definition:
Record number
Attribute_Definition_Source:
DISL: Data Management
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum:
1
Range_Domain_Maximum:
2925
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Metadata_Reference_Information:
Metadata_Date:
20130326
Metadata_Review_Date:
20130723
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
Dauphin Island Sea Lab
Contact_Position:
Data Management Specialist
Contact_Address:
Address_Type:
mailing and physical
Address:
101 Bienville Blvd.
City:
Dauphin Island
State_or_Province:
Al
Postal_Code:
36528
Country:
USA
Contact_Voice_Telephone:
251-861-2141
Contact_Electronic_Mail_Address:
metadata@disl.org
Hours_of_Service:
8-5:00 CST
Contact_Instructions:
Please email the metadata specialist for further information.
Metadata_Standard_Name:
FGDC Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version:
FGDC-STD-001.1-1999
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