http://lod.bco-dmo.org/id/dataset/971872
eng; USA
utf8
dataset
Highest level of data collection, from a common set of sensors or instrumentation, usually within the same research project
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
2025-08-05
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Discrete sample measurements of dissolved oxygen, dissolved inorganic carbon, and total alkalinity from the Seven Mile Island Innovation Laboratory (SMIIL) from Aug 2022 to Jun 2024
2025-08-18
publication
2025-08-18
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2025-08-19
publication
https://doi.org/10.26008/1912/bco-dmo.971872.1
Hilary I. Palevsky
Boston College
principalInvestigator
Emily J. Chua
Boston College
principalInvestigator
Kristen E. Fogaren
Boston College
principalInvestigator
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
publisher
Cite this dataset as: Supino, J., Fogaren, K. E., Chua, E. J., Palevsky, H. I. (2025) Discrete sample measurements of dissolved oxygen, dissolved inorganic carbon, and total alkalinity from the Seven Mile Island Innovation Laboratory (SMIIL) from Aug 2022 to Jun 2024. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2025-08-18 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.971872.1 [access date]
SMIIL salt marsh discrete samples Dataset Description: Methods and Sampling: <p>This dataset contains measurements from discrete water samples collected for dissolved oxygen, dissolved inorganic carbon (DIC), and total alkalinity (TA) measurements during eleven instrument maintenance trips to recover and redeploy biogeochemical sensors at the SMIIL. Beginning in 2022, the SMIIL water quality monitoring program began discrete sample collection at 1) three Open Water Platforms (OWPs), named North, Gull, and South Platform, within the main salt marsh channel; 2) three salt ponds, named Ring West, Ring East, and Shark; and 3) five dredged sediment placement moorings. The monitoring program expanded over the next two years to three more salt ponds, named Long Reach, White, and Drum, and a second dredged sediment placement mooring system in 2023. During field maintenance trips that included discrete sample collection, samples were collected at the last measurement before removal of instruments for maintenance and again upon first available measurement once the sensors were re-deployed. Sample bottles were held by hand under ~0.2 m of seawater for 30 seconds to equilibrate with surrounding seawater before capping.</p>
Funding provided by U.S. Army Engineer Research and Development Center (ERDC) Award Number: W912HZ2020061–RA3
completed
Hilary I. Palevsky
Boston College
617-552-4936
Boston College Dept of Earth and Environmental Sciences 140 Commonwealth Ave
Chestnut Hill
MA
02467
USA
palevsky@bc.edu
pointOfContact
Emily J. Chua
Boston College
emily.chua@bc.edu
pointOfContact
Kristen E. Fogaren
Boston College
Boston College Department of Earth and Environmental Sciences
kristen.fogaren@bc.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
Trip_ID
ISO_DateTime_UTC
Station_ID
Latitude
Longitude
Temp_C
Temp_flag
Sal_PSU
Sal_flag
Oxygen1
Oxygen1_flag
Oxygen2
Oxygen2_flag
Oxygen3
Oxygen3_flag
DIC
DIC_std
DIC_flag
TA
TA_std
TA_flag
Apollo SciTech AS-ALK2 TA Analyzer
Apollo SciTech AS-C6L DIC Analyzer
Sample bottles
Custom-built Winkler dissolved oxygen titrator
theme
None, User defined
Cruise identfier
ISO_DateTime_UTC
station
latitude
longitude
water temperature at measurement depth
quality flag
salinity
dissolved Oxygen
dissolved inorganic Carbon
standard deviation
total alkalinity (TA)
featureType
BCO-DMO Standard Parameters
Apollo SciTech AS-ALK2 total alkalinity titrator
Apollo SciTech AS-C6L Dissolved Inorganic Carbon (DIC) analyzer
Discrete water sampler
Winkler Oxygen Titrator
instrument
BCO-DMO Standard Instruments
otherRestrictions
otherRestrictions
Access Constraints: none. Use Constraints: Please follow guidelines at: http://www.bco-dmo.org/terms-use Distribution liability: Under no circumstances shall BCO-DMO be liable for any direct, incidental, special, consequential, indirect, or punitive damages that result from the use of, or the inability to use, the materials in this data submission. If you are dissatisfied with any materials in this data submission your sole and exclusive remedy is to discontinue use.
Sediment transport and water quality in watersheds and coastlines of the United States
https://osprey.bco-dmo.org/project/962228
Sediment transport and water quality in watersheds and coastlines of the United States
<p>Salt marshes are highly productive, dynamic coastal environments that experience large fluctuations in biogeochemical parameters such as dissolved oxygen and pH in response to both natural forcings and anthropogenic impacts. At present, we have a limited understanding of the magnitude of biogeochemical variability in coastal habitats, hindering our ability to predict how they will respond in the future to episodic events and long-term change. This incomplete picture owes to a lack of sustained water quality measurements in coastal and estuarine systems worldwide.</p>
<p>This project investigates biogeochemical cycling in the Seven Mile Island Innovation Laboratory (SMIIL), a network of tidal marshes and channels in coastal New Jersey that is a site of historic and contemporary dredging and a testbed for marsh restoration techniques such as beneficial use of dredged sediment. It leverages multiple data sets of continuous, high-frequency (10-minute) measurements of physical and biogeochemical parameters, including water depth, temperature, salinity, dissolved oxygen, pH, chlorophyll a, and turbidity, as well as precipitation, wind speed, wind direction, temperature, relative humidity, and atmospheric pressure data. Two long-term biogeochemical sensor data sets, comprising a three-year time series at three sites in the main marsh channel (from June 2021–June 2024) and 1-2 year time series at six distinct salt ponds (August 2022–June 2024), were collected. Additionally, short-term (~months long) dredging and sediment placement monitoring data were collected at five different locations in 2022 and 2023. Data collection was designed to capture a variety of natural (diel, tidal, seasonal, storm-related) and human-created (sediment dredging and placement) conditions. Factory-calibrated biogeochemical sensors were field calibrated and maintained every 4 to 12 weeks. Discrete samples for dissolved oxygen, total alkalinity, and dissolved inorganic carbon were collected at the start and end of each sensor deployment for additional sensor calibration and validation. Altogether, our high-quality, multiyear dataset provides critical insights into the inherent variability of biogeochemical conditions in temperate salt marshes on diel and seasonal timescales, as well as how they may respond to transient events (e.g., storms, dredging activities) and over the longer term.</p>
SMIIL Water Quality
largerWorkCitation
project
eng; USA
oceans
-74.801926
-74.7467
39.0425
39.1032
2022-08-02
2024-06-04
Coastal New Jersey (Seven Mile Island Innovation Lab)
0
BCO-DMO catalogue of parameters from Discrete sample measurements of dissolved oxygen, dissolved inorganic carbon, and total alkalinity from the Seven Mile Island Innovation Laboratory (SMIIL) from Aug 2022 to Jun 2024
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
http://lod.bco-dmo.org/id/dataset-parameter/971917.rdf
Name: Trip_ID
Units: unitless
Description: <p>Identification of sample collection trip</p>
http://lod.bco-dmo.org/id/dataset-parameter/971918.rdf
Name: ISO_DateTime_UTC
Units: unitless
Description: <p>ISO 8601 formatted datetime of sample collection</p>
http://lod.bco-dmo.org/id/dataset-parameter/971920.rdf
Name: Station_ID
Units: unitless
Description: <p>Station identification</p>
http://lod.bco-dmo.org/id/dataset-parameter/971921.rdf
Name: Latitude
Units: decimal degrees
Description: <p>Latitude in decimal degrees North</p>
http://lod.bco-dmo.org/id/dataset-parameter/971923.rdf
Name: Longitude
Units: decimal degrees
Description: <p>Longitude in decimal degrees West</p>
http://lod.bco-dmo.org/id/dataset-parameter/971925.rdf
Name: Temp_C
Units: degrees Celsius
Description: <p>In situ temperature</p>
http://lod.bco-dmo.org/id/dataset-parameter/971926.rdf
Name: Temp_flag
Units: unitless
Description: <p>Quality control flag; see data Problems and Issues section</p>
http://lod.bco-dmo.org/id/dataset-parameter/971927.rdf
Name: Sal_PSU
Units: Practical Salinity Units
Description: <p>Calibrated salinity calculated from conductivity recorded in-situ</p>
http://lod.bco-dmo.org/id/dataset-parameter/971928.rdf
Name: Sal_flag
Units: unitless
Description: <p>Quality control flag; see data Problems and Issues section</p>
http://lod.bco-dmo.org/id/dataset-parameter/971929.rdf
Name: Oxygen1
Units: umol/kg
Description: <p>Dissolved oxygen content measured from discrete-bottle-based Winkler titration</p>
http://lod.bco-dmo.org/id/dataset-parameter/971930.rdf
Name: Oxygen1_flag
Units: unitless
Description: <p>Quality control flag; see data Problems and Issues section</p>
http://lod.bco-dmo.org/id/dataset-parameter/971931.rdf
Name: Oxygen2
Units: umol/kg
Description: <p>Dissolved oxygen content measured from discrete-bottle-based Winkler titration</p>
http://lod.bco-dmo.org/id/dataset-parameter/971932.rdf
Name: Oxygen2_flag
Units: unitless
Description: <p>Quality control flag; see data Problems and Issues section</p>
http://lod.bco-dmo.org/id/dataset-parameter/971933.rdf
Name: Oxygen3
Units: umol/kg
Description: <p>Dissolved oxygen content measured from discrete-bottle-based Winkler titration</p>
http://lod.bco-dmo.org/id/dataset-parameter/971934.rdf
Name: Oxygen3_flag
Units: unitless
Description: <p>Quality control flag; see data Problems and Issues section</p>
http://lod.bco-dmo.org/id/dataset-parameter/971935.rdf
Name: DIC
Units: umol/kg
Description: <p>Total dissolved inorganic carbon content</p>
http://lod.bco-dmo.org/id/dataset-parameter/971936.rdf
Name: DIC_std
Units: umol/kg
Description: <p>Standard deviation between acceptable DIC replicates</p>
http://lod.bco-dmo.org/id/dataset-parameter/971937.rdf
Name: DIC_flag
Units: unitless
Description: <p>Quality control flag; see data Problems and Issues section</p>
http://lod.bco-dmo.org/id/dataset-parameter/971938.rdf
Name: TA
Units: umol/kg
Description: <p>Total alkalinity content</p>
http://lod.bco-dmo.org/id/dataset-parameter/971939.rdf
Name: TA_std
Units: umol/kg
Description: <p>Standard deviation between acceptable TALK replicates</p>
http://lod.bco-dmo.org/id/dataset-parameter/971940.rdf
Name: TA_flag
Units: unitless
Description: <p>Quality control flag; see data Problems and Issues section</p>
GB/NERC/BODC > British Oceanographic Data Centre, Natural Environment Research Council, United Kingdom
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
28550
https://darchive.mblwhoilibrary.org/server/api/core/bitstreams/451996fe-c5da-45ac-9357-5fa6407f0df6/content
download
https://doi.org/10.26008/1912/bco-dmo.971872.1
download
onLine
dataset
<p>This dataset contains measurements from discrete water samples collected for dissolved oxygen, dissolved inorganic carbon (DIC), and total alkalinity (TA) measurements during eleven instrument maintenance trips to recover and redeploy biogeochemical sensors at the SMIIL. Beginning in 2022, the SMIIL water quality monitoring program began discrete sample collection at 1) three Open Water Platforms (OWPs), named North, Gull, and South Platform, within the main salt marsh channel; 2) three salt ponds, named Ring West, Ring East, and Shark; and 3) five dredged sediment placement moorings. The monitoring program expanded over the next two years to three more salt ponds, named Long Reach, White, and Drum, and a second dredged sediment placement mooring system in 2023. During field maintenance trips that included discrete sample collection, samples were collected at the last measurement before removal of instruments for maintenance and again upon first available measurement once the sensors were re-deployed. Sample bottles were held by hand under ~0.2 m of seawater for 30 seconds to equilibrate with surrounding seawater before capping.</p>
Specified by the Principal Investigator(s)
<p><em>Dissolved Oxygen:</em></p>
<p>Samples were collected into volume-calibrated flasks and preserved for Winkler dissolved oxygen analysis following standard protocols (Langdon, 2010). After collection, samples were stored until laboratory analysis following the procedures of Zhang et al. (2002). All samples were titrated within one week of collection at the Boston College Marine Biogeochemistry Lab using a custom-built Winkler titrator with automated potentiometric end point detection (control software available here: Dnicholson et al., 2023).&nbsp;</p>
<p>Precision of the sample collection and analysis procedure is determined by agreement between replicate measurements from the same location. Due to the need to preserve samples for short term storage, the majority of samples were collected in triplicate. After removal of outlier replicates in cases with triplicate sampling, median agreement among replicates was 0.18%. Larger discrepancies among replicates may reflect errors in sample collection and/or preservation; these results are reported for completeness but are flagged as questionable and/or bad (details of flagging scheme provided under “Problems/Issues” section).</p>
<p>Accuracy of sample measurements depends on standardization of the sodium thiosulfate titrant based on a reference standard. The sodium thiosulfate titrant used was determined by standardization with a 0.01N potassium iodate reference solution from Ocean Scientific International Ltd (OSIL). Lab-prepared potassium iodate standards, measured routinely throughout the monitoring period to verify titration accuracy and stability, were verified and adjusted by measurements against the OSIL standard.</p>
<p><em>Dissolved Inorganic Carbon and Total Alkalinity:</em></p>
<p>Samples were collected for dissolved inorganic carbon (DIC) and total alkalinity (TA) analysis following standard protocols (Dickson et al., 2007). Samples were collected into either 250 mL or 500 mL borosilicate glass bottles and preserved with saturated mercuric chloride (100 μL in 250 mL bottles, 200 μL in 500 mL bottles) for later analysis.</p>
<p>Samples were analyzed at the Boston College Marine Biogeochemistry Laboratory. DIC was analyzed using an Apollo SciTech AS-C6L DIC Analyzer and TA was analyzed using an Apollo SciTech AS-ALK2 TA Analyzer. Both DIC and TA were measured from each sample bottle. All DIC measurements were made on the day the bottle was opened for analysis, and TA measurements were made within the same week. DIC and TA instruments were calibrated daily and monitored throughout each analysis session by measuring Certified Reference Materials (Andrew Dickson, UCSD).</p>
<p>Analytical replicates were measured for all samples such that after analytical outliers (1 sigma) were removed, all samples for both DIC and TA retained at least two replicate measurements (median number of replicates for DIC = 3; median number of replicates for TA = 4). Analytical precision was determined for each sample as the standard deviation of analytical replicates. Mean analytical precision for all DIC samples in this dataset is 1.06 µmol/kg. Mean analytical precision for all TA samples in this dataset is 1.84 µmol/kg.</p>
Specified by the Principal Investigator(s)
- Imported "SMIIL_DiscreteSampleOutput_all.xlsx" into the BCO-DMO system
- Converted datetime to ISO 8601 format YYYY-MM-DDTHH:MM
- Exported file as "971872_v1_smiil_discrete_sample.csv"
Specified by BCO-DMO Data Managers
asNeeded
7.x-1.1
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
Apollo SciTech AS-ALK2 TA Analyzer
Apollo SciTech AS-ALK2 TA Analyzer
PI Supplied Instrument Name: Apollo SciTech AS-ALK2 TA Analyzer PI Supplied Instrument Description:Samples were analyzed at the Boston College Marine Biogeochemistry Laboratory. DIC was analyzed using an Apollo SciTech AS-C6L DIC Analyzer and TA was analyzed using an Apollo SciTech AS-ALK2 TA Analyzer. Instrument Name: Apollo SciTech AS-ALK2 total alkalinity titrator Instrument Short Name:Apollo SciTech AS-ALK2 Instrument Description: An automated acid-base titrator for use in aquatic carbon dioxide parameter analysis. The titrator provides standardisation and sample analysis, using the Gran titration procedure for alkalinity determination of seawater and brackish waters. It is designed for both shipboard and land based laboratory use. The precision of the instrument is 0.1 percent or higher, and sample volumes may range from 10-25 ml. Titration takes approximately 8 minutes per sample, and the repeatability is within plus or minus 1-2 micromoles per kg.
Apollo SciTech AS-C6L DIC Analyzer
Apollo SciTech AS-C6L DIC Analyzer
PI Supplied Instrument Name: Apollo SciTech AS-C6L DIC Analyzer PI Supplied Instrument Description:DIC was analyzed using an Apollo SciTech AS-C6L DIC Analyzer and TA was analyzed using an Apollo SciTech AS-ALK2 TA Analyzer. Instrument Name: Apollo SciTech AS-C6L Dissolved Inorganic Carbon (DIC) analyzer Instrument Short Name: Instrument Description: An instrument designed for the analysis of dissolved inorganic carbon in samples from various aquatic environments. It comprises of a laser-based CO2 detector (LI-7815), a digital syringe pump, a mass flow controller, CO2 stripping reactor, an electronic cooling system and a computer communication assembly (RS-485, USB). The AS-C6L supersedes the earlier AS-C3 model, which used non-dispersive infra-red CO2 detection (LI-7000, discontinued). The AS-C6L improves on the AS-C3 by incorporating a multi-sampler of one set of standards plus 8 samples, and uses improved Apollo SciTech software. The AS-C6L is suitable for use in either shipboard or land-based laboratories. It maintains a precision of +/-0.1 % for seawater (or +/-2 umol/kg), enables sample volumes ranging from 0.5 - 3.5 ml per analysis, and an analytical rate of approximately 3 minutes.
Sample bottles
Sample bottles
PI Supplied Instrument Name: Sample bottles PI Supplied Instrument Description:During field maintenance trips that included discrete sample collection, samples were collected at the last measurement before removal of instruments for maintenance and again upon first available measurement once the sensors were re-deployed.Sample bottles were held by hand under ~0.2 m of seawater for 30 seconds to equilibrate with surrounding seawater before capping. Instrument Name: Discrete water sampler Instrument Short Name: Instrument Description: A device that collects an in-situ discrete water sample from any depth and returns it to the surface without contamination by the waters through which it passes, such as a water bottle.
Custom-built Winkler dissolved oxygen titrator
Custom-built Winkler dissolved oxygen titrator
PI Supplied Instrument Name: Custom-built Winkler dissolved oxygen titrator PI Supplied Instrument Description:All samples were titrated within one week of collection at the Boston College Marine Biogeochemistry Lab using a custom-built Winkler titrator with automated potentiometric end point detection (control software available here: Nicholson et al., 2023). Instrument Name: Winkler Oxygen Titrator Instrument Short Name:Winkler Titrator Instrument Description: A Winkler Oxygen Titration system is used for determining concentration of dissolved oxygen in seawater. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB12/