Checking for non-preferred file/folder path names (may take a long time depending on the number of files/folders) ...

Dissolved carbon and water quality data from a coastal Louisiana salt marsh


Authors:
Owners: This resource does not have an owner who is an active HydroShare user. Contact CUAHSI (help@cuahsi.org) for information on this resource.
Type: Resource
Storage: The size of this resource is 36.5 KB
Created: Jan 27, 2026 at 2:08 p.m. (UTC)
Last updated: Jan 27, 2026 at 3:27 p.m. (UTC) (Metadata update)
Published date: Jan 27, 2026 at 3:27 p.m. (UTC)
DOI: 10.4211/hs.3fedcfd19c4647afa88a80ba572d2598
Citation: See how to cite this resource
Sharing Status: Published
Views: 19
Downloads: 1
+1 Votes: Be the first one to 
 this.
Comments: No comments (yet)

Abstract

Discrete water-quality sensor data and dissolved carbon samples were collected at the USGS gage 292939089544400 (Wilkinson Bayou cutoff, north of Wilkinson Bay, LA). Field water-quality measurements were obtained using a YSI EXO2 water-quality sonde equipped with a data logger to measure water temperature, salinity, pH, fluorescent dissolved organic matter (fDOM), and dissolved oxygen (DO). Discrete samples of dissolved inorganic carbon (DIC), dissolved organic carbon (DOC), and total alkalinity (TA) were collected at the tidal creek. For both DIC and TA, water samples were passed through a 0.45 µm glass-fiber syringe filter and collected without headspace into airtight 40 mL glass vials by filling from the bottom and allowing overflow of at least one vial volume to minimize atmospheric contamination. Samples were preserved with 20 µL of saturated mercuric chloride (HgCl₂) solution. For DOC analysis, creek water was filtered through 0.45 µm filters and stored in amber bottles without the addition of chemical preservatives (He and Xu, 2017). All water samples were transported to the laboratory on ice and stored at 5 °C until analysis. DIC was analyzed following the standard protocol for the semi-automated Apollo SciTech AS-C5 Dissolved Inorganic Carbon Analyzer (Newark, DE, USA). Total alkalinity was determined using the Gran titration method (Gran, 1952) with a semi-automated Apollo SciTech AS-ALK2 Total Alkalinity Titrator (Newark, DE, USA). Dissolved organic carbon was analyzed using a Shimadzu TOC-5000A analyzer with an ASI-5000A autosampler by converting all carbon to CO₂ via high-temperature combustion.

Subject Keywords

Coverage

Spatial

Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
Place/Area Name:
Barataria Basin Salt Marsh
Longitude
-89.9100°
Latitude
29.5000°

Temporal

Start Date:
End Date:

Content

Credits

Funding Agencies

This resource was created using funding from the following sources:
Agency Name Award Title Award Number
Louisiana Trustee Implementation Group
U.S. Geological Survey Ecosystems Mission Area, South Central Climate Adaptation Science Center

How to Cite

He, S. (2026). Dissolved carbon and water quality data from a coastal Louisiana salt marsh, HydroShare, https://doi.org/10.4211/hs.3fedcfd19c4647afa88a80ba572d2598

This resource is shared under the Creative Commons Attribution CC BY.

http://creativecommons.org/licenses/by/4.0/
CC-BY

Comments

There are currently no comments

New Comment

required