http://lod.bco-dmo.org/id/dataset/943964
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
2024-11-19
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Houston Galveston Bay Pigments from the Hurricane Harvey Texas Lagoons project
2024-11-19
publication
2024-11-19
revision
BCO-DMO Linked Data URI
2024-11-19
creation
http://lod.bco-dmo.org/id/dataset/943964
Hui Liu
Texas A&M, Galveston
principalInvestigator
Xinping Hu
Texas A&M, Corpus Christi
principalInvestigator
Larissa Marie Dias
Texas A&M, Corpus Christi
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: Liu, H., Hu, X., Dias, L. M. (2024) Houston Galveston Bay Pigments. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2024-11-19 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/943964 [access date]
Methods and Sampling: <p><strong>Field Sampling</strong></p>
<p>Galveston Bay is a semi-enclosed microtidal estuary located in the northwest Gulf of Mexico (Montagna et al., 2013). With an average water depth of 3 m and a surface area covering 1554 km², Galveston Bay is the seventh-largest estuary in the U.S. and the second-largest estuary on the Texas coast (Bass et al., 2018; Morse et al., 1993; Solis &amp; Powell, 1999). Galveston Bay receives freshwater from the Trinity River, San Jacinto River, Clear Creek, and smaller bayous and creeks, with the Trinity River providing 70% of the freshwater entering the Bay (Bass et al., 2018; Dellapenna et al., 2020; Morse et al., 1993; Solis &amp; Powell, 1999). The Bolivar Peninsula and Galveston Island separate Galveston Bay from the Gulf of Mexico, with the exchange of water between the Bay and the Gulf occurring through Bolivar Roads, i.e., the mouth of the Bay (Glass et al., 2008; Morse et al., 1993).</p>
<p>Monthly cruises were conducted between October 2017 and September 2018 onboard the <em>R/V Trident</em>. Timing of the study allowed for the examination of the factors regulating CO₂ flux over the course of a year following Hurricane Harvey in late August 2017. Although the study began more than 45 days (the residence time of the Bay) after Harvey, salinity recovery of the Bay was likely still ongoing in the inner and middle sections of the Bay (Du &amp; Park, 2019a; Du et al., 2019).</p>
<p>During each monthly survey, a transect was run between five water sampling stations, extending northwest from the Bay mouth (Station 1) opening to the Five Mile Marker on the Houston Ship Channel (Station 5). One offshore cruise in the northwest Gulf of Mexico outside Galveston Bay was conducted in October 2018.</p>
<p><strong>Pigments</strong></p>
<p>Chlorophyll-a concentrations were analyzed from surface water samples collected at each station in the Bay as described by Liu and Xue (2020). Surface waters were filtered through GF/F filters, which were frozen immediately in liquid nitrogen and later stored in the freezer at −80°C until analysis. Extraction of pigments from filters followed procedures outlined by Liu et al. (2006) and Sun et al. (1991), whereby filters were extracted in acetone in polypropylene centrifuge tubes, which were sonicated for 15 minutes in a sonicator (Model FS 60, Fisher Scientific). Acetone extract was filtered through a syringe filter (0–2 μm Nylon filter). Procedures were repeated for sample filters, and the two extracts (total 6 mL) were combined and blown with nitrogen gas under ice to dryness (Chen et al., 2005). Acetone (0.5 mL) was then added to dissolve the residue before high-performance liquid chromatography (HPLC) analysis (Liu &amp; Xue, 2020).</p>
<p>Pigments were analyzed using a Shimadzu HPLC system with a reverse-phase column (Agilent Eclipse XDB-C8, 3.5 μm particle size, 150 mm length × 4.6 mm diameter) and a photodiode array (PDA) detector set at 450 nm. The mobile phases included A (70:30 v/v methanol: 28 mM tetrabutylammonium acetate; pH 6.5) and B methanol (100%). After sample injection (400 μL, mixing 0.5 mL acetone extract and 1.25 mL 28 mM tetrabutylammonium acetate), a gradient program (1.0 mL/min) began with 5% B and increased to 95% B in 22 minutes, then to 95% B isocratically over 30 minutes. All chromatographic separations were performed in a column oven set at 60°C. Pigments were identified by comparing retention times with authentic standards purchased from DHI (Denmark) or Sigma-Aldrich (USA). Peak areas were converted to concentrations based on response factors calculated from authentic standards. Duplicate analyses of the same extract generally agreed within 20%.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1760006 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1760006
onGoing
Hui Liu
Texas A&M, Galveston
409-740-4716
P.O. Box 1675
Galveston
TX
777553
USA
liuh@tamug.edu
pointOfContact
Xinping Hu
Texas A&M, Corpus Christi
361-825-3395
The University of Texas at Austin Department of Marine Science
Austin
TX
USA
xinping.hu@austin.utexas.edu
pointOfContact
Larissa Marie Dias
Texas A&M, Corpus Christi
lmdias@uw.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
Shimadzu HPLC system
theme
None, User defined
High-Performance Liquid Chromatograph
instrument
BCO-DMO Standard Instruments
Galveston_Bay_Cruises
service
Deployment Activity
Galveston Bay, an estuary situated along the northwestern Gulf of Mexico
place
Locations
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.
RAPID: Capturing the Signature of Hurricane Harvey on Texas Coastal Lagoons
https://osprey.bco-dmo.org/project/783256
RAPID: Capturing the Signature of Hurricane Harvey on Texas Coastal Lagoons
<p><em>NSF Award Abstract:</em><br />
Hurricane Harvey made landfall Friday 25 August 2017 about 30 miles northeast of Corpus Christi, Texas as a Category 4 hurricane with winds up to 130 mph. This is the strongest hurricane to hit the middle Texas coast since Carla in 1961. After the wind storm and storm surge, coastal flooding occurred due to the storm lingering over Texas for four more days, dumping as much as 50 inches of rain near Houston. This will produce one of the largest floods ever to hit the Texas coast, and it is estimated that the flood will be a one in a thousand year event. The Texas coast is characterized by lagoons behind barrier islands, and their ecology and biogeochemistry are strongly influenced by coastal hydrology. Because this coastline is dominated by open water systems and productivity is driven by the amount of freshwater inflow, Hurricane Harvey represents a massive inflow event that will likely cause tremendous changes to the coastal environments. Therefore, questions arise regarding how biogeochemical cycles of carbon, nutrients, and oxygen will be altered, whether massive phytoplankton blooms will occur, whether estuarine species will die when these systems turn into lakes, and how long recovery will take? The investigators are uniquely situated to mount this study not only because of their location, just south of the path of the storm, but most importantly because the lead investigator has conducted sampling of these bays regularly for the past thirty years, providing a tremendous context in which to interpret the new data gathered. The knowledge gained from this study will provide a broader understanding of the effects of similar high intensity rainfall events, which are expected to increase in frequency and/or intensity in the future.</p>
<p>The primary research hypothesis is that: Increased inflows to estuaries will cause increased loads of inorganic and organic matter, which will in turn drive primary production and biological responses, and at the same time significantly enhance respiration of coastal blue carbon. A secondary hypothesis is that: The large change in salinity and dissolved oxygen deficits will kill or stress many estuarine and marine organisms. To test these hypotheses it is necessary to measure the temporal change in key indicators of biogeochemical processes, and biodiversity shifts. Thus, changes to the carbon, nitrogen and oxygen cycles, and the diversity of benthic organisms will be measured and compared to existing baselines. The PIs propose to sample the Lavaca-Colorado, Guadalupe, Nueces, and Laguna Madre estuaries as follows: 1) continuous sampling (via autonomous instruments) of salinity, temperature, pH, dissolved oxygen, and depth (i.e. tidal elevation); 2) bi-weekly to monthly sampling for dissolved and total organic carbon and organic nitrogen, carbonate system parameters, nutrients, and phytoplankton community composition; 3) quarterly measurements of sediment characteristics and benthic infauna. The project will support two graduate students. The PIs will communicate results to the public and to state agencies through existing collaborations.</p>
Hurricane Harvey Texas Lagoons
largerWorkCitation
project
eng; USA
oceans
Galveston Bay, an estuary situated along the northwestern Gulf of Mexico
94.5
95.5
29.358
29.607
2017-10-22
2018-10-14
Northwest Gulf of Mexico estuaries on Texas Coast
0
BCO-DMO catalogue of parameters from Houston Galveston Bay Pigments from the Hurricane Harvey Texas Lagoons 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
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
https://osprey.bco-dmo.org/dataset/943964/data/download
download
onLine
dataset
<p><strong>Field Sampling</strong></p>
<p>Galveston Bay is a semi-enclosed microtidal estuary located in the northwest Gulf of Mexico (Montagna et al., 2013). With an average water depth of 3 m and a surface area covering 1554 km², Galveston Bay is the seventh-largest estuary in the U.S. and the second-largest estuary on the Texas coast (Bass et al., 2018; Morse et al., 1993; Solis &amp; Powell, 1999). Galveston Bay receives freshwater from the Trinity River, San Jacinto River, Clear Creek, and smaller bayous and creeks, with the Trinity River providing 70% of the freshwater entering the Bay (Bass et al., 2018; Dellapenna et al., 2020; Morse et al., 1993; Solis &amp; Powell, 1999). The Bolivar Peninsula and Galveston Island separate Galveston Bay from the Gulf of Mexico, with the exchange of water between the Bay and the Gulf occurring through Bolivar Roads, i.e., the mouth of the Bay (Glass et al., 2008; Morse et al., 1993).</p>
<p>Monthly cruises were conducted between October 2017 and September 2018 onboard the <em>R/V Trident</em>. Timing of the study allowed for the examination of the factors regulating CO₂ flux over the course of a year following Hurricane Harvey in late August 2017. Although the study began more than 45 days (the residence time of the Bay) after Harvey, salinity recovery of the Bay was likely still ongoing in the inner and middle sections of the Bay (Du &amp; Park, 2019a; Du et al., 2019).</p>
<p>During each monthly survey, a transect was run between five water sampling stations, extending northwest from the Bay mouth (Station 1) opening to the Five Mile Marker on the Houston Ship Channel (Station 5). One offshore cruise in the northwest Gulf of Mexico outside Galveston Bay was conducted in October 2018.</p>
<p><strong>Pigments</strong></p>
<p>Chlorophyll-a concentrations were analyzed from surface water samples collected at each station in the Bay as described by Liu and Xue (2020). Surface waters were filtered through GF/F filters, which were frozen immediately in liquid nitrogen and later stored in the freezer at −80°C until analysis. Extraction of pigments from filters followed procedures outlined by Liu et al. (2006) and Sun et al. (1991), whereby filters were extracted in acetone in polypropylene centrifuge tubes, which were sonicated for 15 minutes in a sonicator (Model FS 60, Fisher Scientific). Acetone extract was filtered through a syringe filter (0–2 μm Nylon filter). Procedures were repeated for sample filters, and the two extracts (total 6 mL) were combined and blown with nitrogen gas under ice to dryness (Chen et al., 2005). Acetone (0.5 mL) was then added to dissolve the residue before high-performance liquid chromatography (HPLC) analysis (Liu &amp; Xue, 2020).</p>
<p>Pigments were analyzed using a Shimadzu HPLC system with a reverse-phase column (Agilent Eclipse XDB-C8, 3.5 μm particle size, 150 mm length × 4.6 mm diameter) and a photodiode array (PDA) detector set at 450 nm. The mobile phases included A (70:30 v/v methanol: 28 mM tetrabutylammonium acetate; pH 6.5) and B methanol (100%). After sample injection (400 μL, mixing 0.5 mL acetone extract and 1.25 mL 28 mM tetrabutylammonium acetate), a gradient program (1.0 mL/min) began with 5% B and increased to 95% B in 22 minutes, then to 95% B isocratically over 30 minutes. All chromatographic separations were performed in a column oven set at 60°C. Pigments were identified by comparing retention times with authentic standards purchased from DHI (Denmark) or Sigma-Aldrich (USA). Peak areas were converted to concentrations based on response factors calculated from authentic standards. Duplicate analyses of the same extract generally agreed within 20%.</p>
Specified by the Principal Investigator(s)
Monthly and spatial trends in chlorophyll-a were examined graphically and on maps created using R, Excel, and MATLAB in comparison with carbonate chemistry measurements (separate dataset).
Specified by the Principal Investigator(s)
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
Shimadzu HPLC system
Shimadzu HPLC system
PI Supplied Instrument Name: Shimadzu HPLC system PI Supplied Instrument Description:Shimadzu HPLC system with a reverse phase column (Agilent Eclipse XDB-C8, 3.5 micron particle size, 150 mm length x 4.6 mm diameter), with photodiode array (PDA) detector set as 450 nm. Instrument Name: High-Performance Liquid Chromatograph Instrument Short Name:HPLC Instrument Description: A High-performance liquid chromatograph (HPLC) is a type of liquid chromatography used to separate compounds that are dissolved in solution. HPLC instruments consist of a reservoir of the mobile phase, a pump, an injector, a separation column, and a detector. Compounds are separated by high pressure pumping of the sample mixture onto a column packed with microspheres coated with the stationary phase. The different components in the mixture pass through the column at different rates due to differences in their partitioning behavior between the mobile liquid phase and the stationary phase. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB11/
Cruise: Galveston_Bay_Cruises
Galveston_Bay_Cruises
R/V Trident
R/V Trident
vessel
Galveston_Bay_Cruises
Xinping Hu
University of Texas - Marine Science Institute
R/V Trident
R/V Trident
vessel