gov.noaa.nodc:0302679 eng utf8 dataset NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NOAA Contact Information Information for contacts at NCEI. information custodian 2026-03-24T18:42:47Z ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) NOAA RESTORE Science Program: Linking Community and Food-web Approaches to Restoration: Organic matter decomposition in restored vs. natural Louisiana marshes near the West Pointe A La Hache siphon, 2018-05-21 to 2021-07-28 (NCEI Accession 0302679) 2025-03-26 publication 2025-03-19 creation International DOI Foundation (IDF) 10.25921/8h8n-e570 NOAA National Centers for Environmental Information gov.noaa.nodc:0302679 NCEI Archive Management System 0302679 NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NCEI Contact Information Information for contacts at NCEI. information publisher NOAA National Centers for Coastal Ocean Science (NCCOS) https://coastalscience.noaa.gov/ HTTPS NOAA National Centers for Coastal Ocean Science (NCCOS) website Institution web page information resourceProvider Michael Polito University of California - Santa Cruz (UCSC) polito@ucsc.edu principalInvestigator Michael Polito University of California - Santa Cruz (UCSC) polito@ucsc.edu pointOfContact Frank Parker NOAA RESTORE Science Program frank.parker@noaa.gov https://restoreactscienceprogram.noaa.gov/ HTTPS NOAA RESTORE Science Program website Institution web page information pointOfContact NOAA National Centers for Coastal Ocean Science (NCCOS) NCCOS Data Manager nccos.data@noaa.gov https://coastalscience.noaa.gov/ HTTPS NOAA National Centers for Coastal Ocean Science (NCCOS) website Institution web page information pointOfContact Michael Polito University of California - Santa Cruz (UCSC) polito@ucsc.edu collaborator Annette Engel University of Tennessee collaborator Linda Hooper-Bùi Louisiana State University (LSU) collaborator Olaf Jensen Rutgers, The State University of New Jersey collaborator Paola López-Duarte Rutgers, The State University of New Jersey collaborator Charles Martin University of Florida (UF) http://www.ufl.edu/ HTTP University of Florida (UF) website Institution web page information collaborator Jill Olin Michigan Technological University (MTU) https://www.mtu.edu/ HTTPS Michigan Technological University (MTU) website Institution web page information collaborator Brian Roberts Louisiana Universities Marine Consortium (LUMCON) http://www.lumcon.edu HTTP Louisiana Universities Marine Consortium (LUMCON) website Institution web page information collaborator Erick Swenson Louisiana State University (LSU) collaborator Nancy N. Rabalais Louisiana State University (LSU) nrabalais@lumcon.edu http://www.lumcon.edu HTTP Louisiana State University (LSU) website Institution web page information collaborator Polito, Michael J. University of California - Santa Cruz author O'Nuanain, Aine Louisiana State University author Bennelli, Allison Louisiana State University author Winston, Joseph Louisiana State University author Lamb, Katelyn J. Louisiana State University author López-Duarte, Paola C. Rutgers, The State University of New Jersey author Roberts, Brian J. Louisiana Universities Marine Consortium http://www.lumcon.edu HTTP Louisiana Universities Marine Consortium (LUMCON) website Institution web page information author Louisiana Universities Marine Consortium (LUMCON) http://www.lumcon.edu HTTP Louisiana Universities Marine Consortium (LUMCON) website Institution web page information contributor Michigan Technological University (MTU) https://www.mtu.edu/ HTTPS Michigan Technological University (MTU) website Institution web page information contributor NOAA National Centers for Coastal Ocean Science (NCCOS) https://coastalscience.noaa.gov/ HTTPS NOAA National Centers for Coastal Ocean Science (NCCOS) website Institution web page information contributor University of Florida (UF) http://www.ufl.edu/ HTTP University of Florida (UF) website Institution web page information contributor NOAA RESTORE Science Program https://restoreactscienceprogram.noaa.gov/ HTTPS NOAA RESTORE Science Program website Institution web page information contributor Rutgers, The State University of New Jersey contributor Louisiana State University (LSU) contributor University of Tennessee contributor University of California - Santa Cruz (UCSC) contributor tableDigital This data set contains calculated organic matter decomposition rates from created and natural brackish marshes in Plaquemines parish, Louisiana near the West Pointe A La Hache siphon. One litter bag transect was deployed at six sites in May 2018, May 2019, and May 2021. Each litter bag transect was comprised of five plots at 1, 10, 25, 50, & 100 m from the marsh edge. Each of the five plots contained five litter bags with 25 grams of dried Spartina alterniflora per bag. Bags were deployed for two months. The data set also contains plot locations and elevation, marsh type (created vs. restored), siphon status (open vs. closed), and deployment dates and duration. Data are in spreadsheet format. To compare organic matter decomposition rates among created and natural brackish marshes at varying distances from a freshwater siphon connected to the Mississippi River during periods of siphon openings and closures. Little is known about how river diversions influence the ecological trajectory, food web structure, and function of natural versus created marshes. To address this gap, this project established sites in the West Point a la Hache (WPH) area (Barataria Bay, in Plaquemines Parish, Louisiana), near the WPH siphon which periodically shunts Mississippi River water into the local marshes. Sites were also established in nearby marshes that were restored as part of the Lake Hermitage (LH) Marsh Creation Project, representing an ideal model system to examine how seasonal and spatial shifts in salinity due to river diversions influence species composition and food web structure in both natural and different-aged created marshes. Objectives of the overall project included characterizing species compositions and abundances in multiple trophic levels (microbes to upper trophic level predators) and applying bulk (SIA) and compound-specific stable isotope analysis (CSIA) of amino acids (AA) in producer and consumer tissues to describe and compare the structure and complexity of food webs and reveal aspects of fish residency. Only marsh organic matter decomposition data are included in this dataset. The data in this accession were funded by the NOAA RESTORE Science Program under award NA17NOS4510091 to Louisiana State University. Funding Agency: NOAA RESTORE Science Program completed historicalArchive NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NCEI Contact Information Information for contacts at NCEI. information pointOfContact asNeeded https://www.ncei.noaa.gov/access/metadata/landing-page/bin/gfx?id=gov.noaa.nodc:0302679 Preview graphic PNG 0302679 NCEI ACCESSION NUMBER 2025-03-04 publication LATITUDE LONGITUDE TOTAL DRY MASS theme NODC DATA TYPES THESAURUS bag - collection GPS instrument NODC INSTRUMENT TYPES THESAURUS in situ laboratory analyses theme NODC OBSERVATION TYPES THESAURUS Louisiana State University Louisiana Universities Marine Consortium Michigan Technological University NOAA National Centers for Coastal Ocean Science NOAA RESTORE Science Program Rutgers, The State University of New Jersey University of California - Santa Cruz University of Florida University of Tennessee dataCentre NODC COLLECTING INSTITUTION NAMES THESAURUS NOAA National Centers for Coastal Ocean Science dataCentre NODC SUBMITTING INSTITUTION NAMES THESAURUS Coastal Waters of Louisiana Gulf of America Gulf of Mexico place NODC SEA AREA NAMES THESAURUS oceanography theme WMO_CategoryCode 2012-09-15 publication DOC/NOAA/NOS/NCCOS > National Centers for Coastal Ocean Science, National Ocean Service, NOAA, U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2026 revision 23 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page 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 information custodian NCCOS RESTORE Science Program ROR ID: 0042xzm63 NCCOS Sponsored Research > RESTORE Science Program NOAA RESTORE Science Program (NA17NOS4510091) project NCCOS Project Keywords NOAA RESTORE Science Program: Linking Community and Food-web Approaches to Restoration US DOC; NOAA; NOS; NCCOS; RESTORE Science Program project Provider Project Names NCCOS Research Data Type > Field Observation theme NCCOS Research Data Type NCCOS Research Topic > Ecological and Biogeographic Assessments theme NCCOS Research Topic Decomposition rate and coefficient Mass measurements Mean elevation NAVD88 Natural marshes Organic matter decompostion Restored marshes theme Provider Keywords GPS RECEIVERS > GPS RECEIVERS instrument Global Change Master Directory (GCMD) Instrument Keywords 2026 revision 23 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page 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 information custodian Position and elevation were measured using a Trimble GNSS Receiver (Model R8), Data Collector/Controller (Model TSC2), and Modem (Model TDL) instrument Provider Instruments OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > GULF OF AMERICA OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > GULF OF MEXICO place Global Change Master Directory (GCMD) Location Keywords 2026 revision 23 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page 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 information custodian NCCOS Research Location > Region > Gulf of America (formerly Gulf of Mexico) place NCCOS Research Location Gulf of America (formerly Gulf of Mexico) Lake Hermitage (LH), Louisiana Port Sulphur (PS), Louisiana West Pointe a la Hache (WPH), eastern Barataria Bay,Louisiana place Provider Location Names 2C7XPW Send2NCEI Submission Package ID accessLevel: Public otherRestrictions Cite as: Polito, Michael J.; O'Nuanain, Aine; Bennelli, Allison; Winston, Joseph; Lamb, Katelyn J.; López-Duarte, Paola C.; Roberts, Brian J. (2025). NOAA RESTORE Science Program: Linking Community and Food-web Approaches to Restoration: Organic matter decomposition in restored vs. natural Louisiana marshes near the West Pointe A La Hache siphon, 2018-05-21 to 2021-07-28 (NCEI Accession 0302679). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/8h8n-e570. Accessed [date]. Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives. otherRestrictions Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose. license This dataset has been dedicated to the public domain under a Creative Commons CC0 1.0 Universal (CC0 1.0) Public Domain Dedication. SPDX License: Creative Commons Zero v1.0 Universal (CC0-1.0) Janssen, B. H. (1984). A simple method for calculating decomposition and accumulation of ‘young’ soil organic matter. Plant and Soil, 76(1–3), 297–304. https://doi.org/10.1007/bf02205588 1984-02 publication International DOI Foundation (IDF) https://doi.org/10.1007/bf02205588 https://doi.org/10.1007/bf02205588 HTTPS https://doi.org/10.1007/bf02205588 related journal article information Janssen, B. H. author Springer Science and Business Media LLC publisher documentDigital Plant Soil 76(1-3) ISSN 0032-079X, ISSN 1573-5036, pp. 297-304 crossReference sciencePaper Rabalais, Nancy N.; Morrison, Wendy; Smith, Leslie; Woods, Gina (2024). NOAA RESTORE Science Program: Linking Community and Food-web Approaches to Restoration: Taxonomic data for marsh infauna associated with natural and restored marshes along a salinity gradient generated from a freshwater diversion at West Pointe a la Hache into eastern Barataria Bay, Louisiana, 2018-05-21 to 2021-05-25 (NCEI Accession 0296020). NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/zb46-m126. 2024-12-18 publication International DOI Foundation (IDF) https://doi.org/10.25921/zb46-m126 NOAA National Centers for Environmental Information gov.noaa.nodc:0296020 https://doi.org/10.25921/zb46-m126 HTTPS https://doi.org/10.25921/zb46-m126 Related dataset information Rabalais, Nancy N. Louisiana Universities Marine Consortium nrabalais@lumcon.edu http://www.lumcon.edu HTTP Louisiana Universities Marine Consortium (LUMCON) website Institution web page information author Morrison, Wendy Louisiana Universities Marine Consortium http://www.lumcon.edu HTTP Louisiana Universities Marine Consortium (LUMCON) website Institution web page information author Smith, Leslie Louisiana Universities Marine Consortium http://www.lumcon.edu HTTP Louisiana Universities Marine Consortium (LUMCON) website Institution web page information author Woods, Gina Louisiana Universities Marine Consortium http://www.lumcon.edu HTTP Louisiana Universities Marine Consortium (LUMCON) website Institution web page information author NOAA National Centers for Environmental Information (NCEI) publisher tableDigital crossReference collection Rabalais, Nancy N.; Morrison, Wendy; Smith, Leslie M.; Woods, Gina (2024). NOAA RESTORE Science Program: Linking Community and Food-web Approaches to Restoration: Total organic carbon and sediment grain size at natural and restored marshes along a salinity gradient generated from a freshwater diversion at West Pointe a la Hache into eastern Barataria Bay, Louisiana, 2018-05-21 to 2021-05-25 (NCEI Accession 0296021). NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/fk7x-v112. 2024-12-18 publication International DOI Foundation (IDF) https://doi.org/10.25921/fk7x-v112 NOAA National Centers for Environmental Information gov.noaa.nodc:0296021 https://doi.org/10.25921/fk7x-v112 HTTPS https://doi.org/10.25921/fk7x-v112 Related dataset information Rabalais, Nancy N. Louisiana Universities Marine Consortium nrabalais@lumcon.edu http://www.lumcon.edu HTTP Louisiana Universities Marine Consortium (LUMCON) website Institution web page information author Morrison, Wendy Louisiana Universities Marine Consortium http://www.lumcon.edu HTTP Louisiana Universities Marine Consortium (LUMCON) website Institution web page information author Smith, Leslie M. Louisiana Universities Marine Consortium leslie.smith@youroceanconsulting.com http://www.lumcon.edu HTTP Louisiana Universities Marine Consortium (LUMCON) website Institution web page information author Woods, Gina Louisiana Universities Marine Consortium http://www.lumcon.edu HTTP Louisiana Universities Marine Consortium (LUMCON) website Institution web page information author NOAA National Centers for Environmental Information (NCEI) publisher tableDigital crossReference collection RESTORE Project, Linking community and food-web approaches to restoration: An ecological assessment of created and natural marshes influenced by river diversions https://restoreactscienceprogram.noaa.gov/projects/marshes 2023 publication https://restoreactscienceprogram.noaa.gov/projects/marshes HTTPS https://restoreactscienceprogram.noaa.gov/projects/marshes Project Webpage information NOAA RESTORE Act Science Program author NOAA RESTORE Act Science Program publisher crossReference program The Louisiana Universities Marine Consortium (LUMCON) Project Webpage https://restorefoodweb.lumcon.edu/ 2023 publication https://restorefoodweb.lumcon.edu/ HTTPS https://restorefoodweb.lumcon.edu/ Project Webpage information The Louisiana Universities Marine Consortium (LUMCON) author The Louisiana Universities Marine Consortium (LUMCON) publisher crossReference project External source of salinity data in the same geographic region of this current study area (stations near the sampling sites in this dataset are: 0263, 3617, 0260, 0258, 3680, 0282, 0209, 4529, 0226, 0224 2024 publication https://lacoast.gov/crms_viewer/Map/CRMSViewer HTTPS https://lacoast.gov/crms_viewer/Map/CRMSViewer CRMS Map Viewer information CWPPRA publisher tableDigital crossReference project eng; USA utf8 environment oceans -89.8543 -89.8099 29.4759 29.5605 2018-05-21 2021-07-28 At collection, leaf litter was dried, weighed, and compared to initial mass to estimate a decomposition rate (g loss/day) and a decomposition coefficient (k) was also calculated based on an exponential decay function: k =1/Δt * ln((yt/(yt+ Δt)), where Δt is the experimental time interval in days, yt is the initial weight of the litter, and yt + Δt is the weight of the litter after Δt deployment period. Position and elevation were measured at each plot and at each site in July of 2018, 2019, and 2021 during the litter bag recovery process. Position and elevation data were collected in duplicate from the center of each plot and referenced to datum NAD83 (latitudinal and longitudinal position) and NAVD88 (geodetic elevation) using the geoid model GEOID2B and projection Louisiana South (a Lambert 2-parallel projection). NOAA National Centers for Environmental Information +1-301-713-3277 ncei.info@noaa.gov pointOfContact In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media. Contact NCEI for other distribution options and instructions. Excel PDF 1.192 https://doi.org/10.25921/8h8n-e570 HTTPS Web browser NCEI Dataset Landing Page Navigate directly to the URL for a descriptive web page with download links. information https://www.ncei.noaa.gov/archive/accession/oas/302679 HTTPS Web browser Descriptive Information Navigate directly to the URL for a descriptive web page with download links. information https://www.ncei.noaa.gov/archive/accession/download/302679 HTTPS Web browser HTTPS Navigate directly to the URL for data access and direct download. download ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0238/0302679/ FTP Any FTP client FTP 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). download dataset NCEI Accession 0302679 v1.1 was published. 2025-03-26T20:04:35Z NCEI Accession 0302679 v1.1 publication https://www.ncei.noaa.gov/archive/accession/0302679/1.1 HTTPS NCEI Accession 0302679 v1.1 published 2025-03-26T20:04:35Z download dataset Parameter or Variable: Mean elevation NAVD88 (measured); Units: meter; Observation Category: in situ; Sampling Instrument: Position and elevation were measured using a Trimble GNSS Receiver (Model R8), Data Collector/Controller (Model TSC2), and Cell; Sampling and Analyzing Method: See Methods section; Data Quality Method: Vertical precision based on repeated measurements of each plot was 0.0216 m. Parameter or Variable: Mass measurements (measured); Units: gram; Observation Category: laboratory analysis; Sampling Instrument: n/a; Sampling and Analyzing Method: See Methods section Parameter or Variable: Decomposition rate and coefficient (calculated); Units: grams per day; Observation Category: other; Sampling Instrument: n/a; Sampling and Analyzing Method: See Methods section asNeeded Metadata are developed, maintained and distributed by NCEI. Updates are performed as needed to maintain currentness. NOAA National Centers for Environmental Information custodian bag - collection bag - collection Any type of bag for collection of marine flora or fauna specimen or coral or seabottom material GPS GPS Global Positioning System receiver satellite-based instrument used for geo-location, positioning and navigation