http://lod.bco-dmo.org/id/dataset/938807 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 2024-09-25 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) Sargassum DOM optical properties tested for photodegradation rates and pH dependence from experiments conducted in outdoor tanks with Sargassum samples collected off the coast of Bermuda and in the Sargasso Sea in 2016 2024-09-25 publication 2024-09-25 revision BCO-DMO Linked Data URI 2024-09-25 creation http://lod.bco-dmo.org/id/dataset/938807 Michael Gonsior University of Maryland Center for Environmental Science principalInvestigator Neil V. Blough University of Maryland - College Park principalInvestigator Rossana Del Vecchio University of Maryland - College Park principalInvestigator Leanne Powers University of Maryland Center for Environmental Science 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: Gonsior, M., Blough, N. V., Del Vecchio, R., Powers, L. (2024) Sargassum DOM optical properties tested for photodegradation rates and pH dependence from experiments conducted in outdoor tanks with Sargassum samples collected off the coast of Bermuda and in the Sargasso Sea in 2016. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2024-09-25 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/938807 [access date] Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1536888 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1536888 Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1536927 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1536927 onGoing Michael Gonsior University of Maryland Center for Environmental Science 410-326-7245 146 Williams Street Solomons MD 20688-3204 USA gonsior.michael@gmail.com pointOfContact Neil V. Blough University of Maryland - College Park 301-405-0051 Chemistry Bldg 8051 Regents Dr College Park MD 20742 USA neilb@umd.edu pointOfContact Rossana Del Vecchio University of Maryland - College Park 240-502-5381 5825 University Research Ct College Park MD 20740 USA rossdv@umd.edu pointOfContact Leanne Powers University of Maryland Center for Environmental Science 315-470-6854 lcpowers@esf.edu pointOfContact asNeeded Dataset Version: 1 Unknown HRS1608 service Deployment Activity MidAtlantic 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. Collaborative Research: Phlorotannins - An Important Source of Marine Chromophoric Dissolved Organic Matter? https://osprey.bco-dmo.org/project/814753 Collaborative Research: Phlorotannins - An Important Source of Marine Chromophoric Dissolved Organic Matter? <p>NSF Award Abstract:</p> <p>Chromophoric dissolved organic matter (CDOM), the sunlight absorbing components in filtered water, is important in the study of marine and freshwater ecosystems as it can be used to trace the mixing of surface waters, as a proxy for carbon cycles, and other biogeochemical processes. Although its importance in ocean studies has been firmly established over the last several decades, sources and structural composition of CDOM within the oceans remains unclear and continues to be a subject of debate. Sargassum, a brown alga, is widely distributed in temperate and subtropical marine waters and may be important source of CDOM to the Sargasso Sea and Gulf of Mexico where Sargassum is abundant. This project will investigate the contribution of macro brown algae-derived compounds to the marine CDOM pool. Results from this study will have implications for the marine carbon cycle and satellite remote sensing of ocean color to assess mixing of surface water masses and biogeochemical processes. The project will provide educational opportunities for a postdoctoral scholar, summertime undergraduate internships (through a local NSF-sponsored Research Experiences for Undergraduates (REU) program), and workshop and research opportunities for local high schools students.</p> <p>Sources of marine CDOM remain debatable and a comprehensive understanding of its origins, distribution and fate have been difficult. Marine CDOM, and in particular the "humic-like" component, have been suggested to originate from terrestrial sources, primarily lignins. However, recent evidence indicates that the exudation of phlorotannins produced by macro brown algae may contribute significantly to the marine CDOM pool. Phlorotannins, a class of polyphenols that are only found in, and continuously exuded by macro brown algae such as Sargassum, strongly absorb ultraviolet light and may have been underestimated in their contribution to the marine CDOM pool within certain geographic locales. Upon partial oxidation, light absorption by these specific compounds extends into longer wavelengths in the visible creating an absorption spectrum similar to that of lignin. These phlorotannins and their transformation products absorb light that might explain in part the "humic-like" signatures observed in open ocean environments. This study aims to characterize the optical properties and molecular composition of Sargassum-derived CDOM including its aerobic oxidation and photochemical behavior, as well as quantify Sargassum-derived CDOM to better estimate its possible contribution to the CDOM pool in the Sargasso Sea and Gulf of Mexico.</p> Sargassum DOM largerWorkCitation project eng; USA oceans MidAtlantic 2024-09-25 Mid-Atlantic Bight (July 2016), Sargasso Sea (July and September 2016), Coastal Bermuda (September/October 2016) and Coastal Puerto Rico (Laguna Grande, Fajardo; Las Croabas, Fajardo; Salinas; May/June 2018) 0 BCO-DMO catalogue of parameters from Sargassum DOM optical properties tested for photodegradation rates and pH dependence from experiments conducted in outdoor tanks with Sargassum samples collected off the coast of Bermuda and in the Sargasso Sea in 2016 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/938807/data/download download onLine 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 Cruise: HRS1608 HRS1608 R/V Hugh R. Sharp Community Standard Description International Council for the Exploration of the Sea R/V Hugh R. Sharp vessel HRS1608 Michael Gonsior University of Maryland Center for Environmental Science R/V Hugh R. Sharp Community Standard Description International Council for the Exploration of the Sea R/V Hugh R. Sharp vessel