Biological response of eelgrass epifauna, Taylor’s Sea hare (Phyllaplysia taylori) and eelgrass isopod (Idotea resecata), to elevated ocean alkalinity from 2023-07-24 to 2023-09-29 (NCEI Accession 0302063)

Description

Marine carbon dioxide removal (mCDR) approaches are under development to mitigate the effects of climate change by sequestering carbon in stable reservoirs, with potential co-benefits of local reduction of coastal acidification impacts. One such method is ocean alkalinity enhancement (OAE). A specific OAE method is the generation of aqueous alkalinity via electrochemistry to enhance the alkalinity of the receiving water by the extraction of acid from seawater, thereby avoiding issues of solid dissolution kinetics and the release of impurities into the ocean from alkaline minerals. While electrochemical acid extraction is a promising method for increasing the carbon dioxide sequestration potential of the ocean, the biological effects of increasing seawater alkalinity and pH within an OAE project site are relatively unknown. This study aims to address this knowledge gap by testing the effects of increased pH and alkalinity, delivered in the form of aqueous NaOH, on two eelgrass epifauna in the U.S. Pacific Northwest, Taylor’s sea hare (Phyllaplysia taylori) and eelgrass isopod (Idotea resecata), chosen for their ecological importance as salmon prey and for their roles in eelgrass ecosystems. Four-day experiments were conducted in closed bottles to allow measurements of the evolution of carbonate species throughout the experiment with water refreshed twice daily to maintain elevated pH, across pHNBS treatments ranging from 7.8 to 9.3. Sea hares experienced mortality in all pH treatments, ranging from 37% mortality at pHNBS 7.8 to 100% mortality at pHNBS 9.3. Isopods experienced lower mortality rates in all treatment groups, ranging from 13% at pHNBS 7.8 to 21% at pHNBS 9.3, which did not significantly increase with higher pH treatments. These experiments represent an extreme of constant exposure to elevated pH and alkalinity, which should be considered in the context of both the natural variation and the dilution of alkalinity experienced by marine communities across an OAE project site. Different invertebrate species will likely have different responses to increased pH and alkalinity, depending on their physiological vulnerabilities. Investigation of the potential vulnerabilities of local marine species will help inform the decision-making process regarding mCDR planning and permitting.

Resources

Name Format Description Link
21 Navigate directly to the URL for a descriptive web page with download links. https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0302063.html
0 Navigate directly to the URL for a descriptive web page with download links. https://doi.org/10.25921/53s1-h309
0 Navigate directly to the URL for a descriptive web page with download links. https://www.ncei.noaa.gov/archive/accession/oas/302063
0 Navigate directly to the URL for data access and direct download. https://www.ncei.noaa.gov/archive/accession/download/302063
0 These data are available through the File Transfer Protocol (FTP). FTP is no longer supported by most internet browsers. You may copy and paste the FTP link to the data into an FTP client (e.g., FileZilla or WinSCP). ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0231/0302063/
0 Information for contacts at NCEI. https://www.ncei.noaa.gov/contact
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Information for contacts at NCEI. https://www.ncei.noaa.gov/contact
0 Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords
0 OCADS website https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system
0 related resource https://doi.org/10.5194/egusphere-2024-972
0 Institution web page http://www.pnl.gov/
0 related resource https://doi.org/10.5194/egusphere-2024-972
0 Institution web page http://www.pnl.gov/
0 Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords
21 Navigate directly to the URL for a descriptive web page with download links. https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0302063.html
0 Navigate directly to the URL for a descriptive web page with download links. https://doi.org/10.25921/53s1-h309
0 Navigate directly to the URL for a descriptive web page with download links. https://www.ncei.noaa.gov/archive/accession/oas/302063
0 Navigate directly to the URL for data access and direct download. https://www.ncei.noaa.gov/archive/accession/download/302063
0 These data are available through the File Transfer Protocol (FTP). FTP is no longer supported by most internet browsers. You may copy and paste the FTP link to the data into an FTP client (e.g., FileZilla or WinSCP). ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0231/0302063/
0 Information for contacts at NCEI. https://www.ncei.noaa.gov/contact
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Information for contacts at NCEI. https://www.ncei.noaa.gov/contact
0 Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords
0 Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords
0 OCADS website https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system
0 related resource https://doi.org/10.5194/egusphere-2024-972
0 Institution web page http://www.pnl.gov/
0 related resource https://doi.org/10.5194/egusphere-2024-972
0 Institution web page http://www.pnl.gov/
21 Navigate directly to the URL for a descriptive web page with download links. https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0302063.html
0 Navigate directly to the URL for a descriptive web page with download links. https://doi.org/10.25921/53s1-h309
0 Navigate directly to the URL for a descriptive web page with download links. https://www.ncei.noaa.gov/archive/accession/oas/302063
0 Navigate directly to the URL for data access and direct download. https://www.ncei.noaa.gov/archive/accession/download/302063
0 These data are available through the File Transfer Protocol (FTP). FTP is no longer supported by most internet browsers. You may copy and paste the FTP link to the data into an FTP client (e.g., FileZilla or WinSCP). ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0231/0302063/
0 Information for contacts at NCEI. https://www.ncei.noaa.gov/contact
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Information for contacts at NCEI. https://www.ncei.noaa.gov/contact
0 Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords
0 OCADS website https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system
0 related resource https://doi.org/10.5194/egusphere-2024-972
0 Institution web page http://www.pnl.gov/
0 related resource https://doi.org/10.5194/egusphere-2024-972
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords
0 Navigate directly to the URL for a descriptive web page with download links. https://www.ncei.noaa.gov/archive/accession/oas/302063
21 Navigate directly to the URL for a descriptive web page with download links. https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0302063.html
0 Navigate directly to the URL for a descriptive web page with download links. https://doi.org/10.25921/53s1-h309
0 Navigate directly to the URL for data access and direct download. https://www.ncei.noaa.gov/archive/accession/download/302063
0 These data are available through the File Transfer Protocol (FTP). FTP is no longer supported by most internet browsers. You may copy and paste the FTP link to the data into an FTP client (e.g., FileZilla or WinSCP). ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0231/0302063/
0 Information for contacts at NCEI. https://www.ncei.noaa.gov/contact
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Information for contacts at NCEI. https://www.ncei.noaa.gov/contact
0 Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords
0 Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords
0 OCADS website https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system
0 related resource https://doi.org/10.5194/egusphere-2024-972
0 Institution web page http://www.pnl.gov/
0 related resource https://doi.org/10.5194/egusphere-2024-972
0 Institution web page http://www.pnl.gov/
0 Navigate directly to the URL for a descriptive web page with download links. https://doi.org/10.25921/53s1-h309
0 Navigate directly to the URL for a descriptive web page with download links. https://www.ncei.noaa.gov/archive/accession/oas/302063
0 Navigate directly to the URL for data access and direct download. https://www.ncei.noaa.gov/archive/accession/download/302063
0 These data are available through the File Transfer Protocol (FTP). FTP is no longer supported by most internet browsers. You may copy and paste the FTP link to the data into an FTP client (e.g., FileZilla or WinSCP). ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0231/0302063/
0 Information for contacts at NCEI. https://www.ncei.noaa.gov/contact
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Institution web page http://www.pnl.gov/
0 Information for contacts at NCEI. https://www.ncei.noaa.gov/contact
0 Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords
0 OCADS website https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system
0 related resource https://doi.org/10.5194/egusphere-2024-972
0 Institution web page http://www.pnl.gov/
0 related resource https://doi.org/10.5194/egusphere-2024-972
0 Institution web page http://www.pnl.gov/
21 Navigate directly to the URL for a descriptive web page with download links. https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0302063.html
0 Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords

Tags

  • west coast us/canada
  • salinity
  • pco2
  • ta
  • mortality
  • oceanography
  • temp
  • sequim bay
  • laboratory experiment
  • salish sea
  • dic
  • ph
  • ocean carbon and acidification data system (ocads) project

Topics

Categories