Louisiana Marsh Dieback - Factors Controlling the Restoration of Brown Marsh Sites with Small Dredge Sediment Enrichment Task 5.4


Louisiana State University, Department of Agronomy and Environmental Studies
Publication_Date: 2005
Louisiana Marsh Dieback - Factors Controlling the Restoration of Brown Marsh Sites with Small Dredge Sediment Enrichment Task 5.4
Geospatial_Data_Presentation_Form: Digital tabular data
Barataria-Terrebonne National Estuary Program Scientific-Technical Committee
Publication_Date: 20010207
Requests for submission of Scope of Services for Marsh Dieback and Nutria Control Emergency Response
Geospatial_Data_Presentation_Form: document
Publication_Place: Thibodaux, LA
Barataria-Terrebonne National Estuary Program Scientific-Technical Committee
Online_Linkage: <http://www.brownmarsh.net/reports/brown_marsh_rfp.pdf>
During the spring and summer of 2000, coastal Louisiana experienced a record drought. This drought resulted in the dieback of several hundred thousand acres of coastal saline marshes. Although much of the impacted area has recovered, some areas remain devoid of vegetation. This data set consists of experimentation using beneficial-use dredged sediments to help build, manage, and restore brown marsh impacted areas to sustainable emergent marsh. Data includes spatial products, hydrologic measurements for use in hydrologic models, and plant collections and analyses.
To provide data for the support of assessing the hydrologic-elevation effects on vegetative recovery, assaying the physico-chemical nature of dredge sediments, quantitatively assessing vegetation recruitment and temporal changes, and determining the effects of artificial plant establishment and nutrient introduction.
Beginning_Date: 2003
Ending_Date: 2005
Currentness_Reference: ground condition
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Description_of_Geographic_Extent: Coastal Louisiana
West_Bounding_Coordinate: -93.910681
East_Bounding_Coordinate: -88.777417
North_Bounding_Coordinate: 30.509791
South_Bounding_Coordinate: 28.892107
Theme_Keyword_Thesaurus: None
Theme_Keyword: hydrologic
Theme_Keyword: brown marsh
Theme_Keyword: salt marsh cordgrass
Theme_Keyword: water depth
Theme_Keyword: dieback
Theme_Keyword: spatial changes
Theme_Keyword: concentration
Theme_Keyword: saltmarsh
Theme_Keyword: artificial planting
Theme_Keyword: nutrients
Theme_Keyword: vegetative recovery
Theme_Keyword: succession
Theme_Keyword: recruitment
Theme_Keyword: hydrologic regime
Theme_Keyword: treatment site
Theme_Keyword: control site
Theme_Keyword: productivity
Place_Keyword_Thesaurus: None
Place_Keyword: Louisiana
Place_Keyword: Coastal Louisiana
Place_Keyword: LA
Place_Keyword: Southern Louisiana
Place_Keyword: Terrebonne Basin
Place_Keyword: Barataria Basin
Taxonomic_Keyword_Thesaurus: None
Taxonomic_Keywords: Spartina alterniflora
Taxonomic_Keywords: Spartina patens
Taxonomic_Keywords: Avicennia germinans
Taxonomic_Keywords: Distichlis spicata
Taxonomic_Keywords: Juncus roemerianus
Taxonomic_Keywords: species
Taxon_Rank_Name: Kingdom
Taxon_Rank_Value: Plantae
Taxon_Rank_Name: Division
Taxon_Rank_Value: Magnoliophyta
Taxon_Rank_Name: Class
Taxon_Rank_Value: Liliopsida
Taxon_Rank_Name: Subclass
Taxon_Rank_Value: Commelinidae
Taxon_Rank_Name: Order
Taxon_Rank_Value: Cyperales
Taxon_Rank_Name: Family
Taxon_Rank_Value: Poaceae
Taxon_Rank_Name: Genus
Taxon_Rank_Value: Spartina
Taxon_Rank_Name: Species
Taxon_Rank_Value: alterniflora
Applicable_Common_Name: smooth cordgrass
Taxon_Rank_Name: Species
Taxon_Rank_Value: patens
Applicable_Common_Name: saltmeadow cordgrass
Taxon_Rank_Name: Genus
Taxon_Rank_Value: Distichlis
Taxon_Rank_Name: Species
Taxon_Rank_Value: spicata
Applicable_Common_Name: saltgrass
Taxon_Rank_Name: Order
Taxon_Rank_Value: Juncales
Taxon_Rank_Name: Family
Taxon_Rank_Value: Juncaceae
Taxon_Rank_Name: Genus
Taxon_Rank_Value: Juncus
Taxon_Rank_Name: Species
Taxon_Rank_Value: roemerianus
Applicable_Common_Name: black needlerush
Taxon_Rank_Name: Class
Taxon_Rank_Value: Magnoliopsida
Taxon_Rank_Name: Subclass
Taxon_Rank_Value: Asteridae
Taxon_Rank_Name: Order
Taxon_Rank_Value: Lamiales
Taxon_Rank_Name: Family
Taxon_Rank_Value: Verbenaceae
Taxon_Rank_Name: Genus
Taxon_Rank_Value: Avicennia
Taxon_Rank_Name: Species
Taxon_Rank_Value: germinans
Applicable_Common_Name: black mangrove
Data generated by the Brown Marsh principal investigators will be available only to the project’s other principal investigators, following the established QA/QC review, for a period of two years. After two years from the finalization of the data, it shall be made available to the public. Please contact the principal investigator for exact date of availability. It is strongly recommended that these data be directly acquired from the Brown Marsh Database Information Management System server and not indirectly through other sources which may have changed the data in some way.
Acknowledgement of the principal investigator as a data source would be appreciated in products developed from these data, and such acknowledgement as is standard for citation and legal practices for data source is expected by users of these data. Users should be aware that comparison with other data sets for the same area from other time periods may be inaccurate due to inconsistencies resulting from changes in mapping conventions, methodologies, data collections and computer processes over time. The principal investigator and the distributor shall not be liable for improper or incorrect use of these data, based on the description of appropriate/inappropriate uses described in this metadata document. The principal investigator and distributor make no claims as to the data’s suitability for other purposes. These data are not legal documents and are not to be used as such.
Louisiana State University, Department of Agronomy and Environmental Management
Contact_Person: Mike Materne
Contact_Position: Researcher
Address_Type: Physical
Address: 104 M.B. Sturgis Hall, Louisiana State University
City: Baton Rouge
State_or_Province: LA
Postal_Code: 70803
Country: USA
Contact_Voice_Telephone: 225 389-0335
Contact_Facsimile_Telephone: 225 382-2042
Contact_Electronic_Mail_Address: mmaterne@agcenter.lsu.edu
Native_Data_Set_Environment: Microsoft Excel 2000

The accuracy of the attributes measured is dependent on a number of factors. Due to data collection procedures and processes, the exact accuracy is unknown. Such factors as human and equipment error, the nature of aerial distribution, calculations, and environmental conditions may have influenced the accuracy of these data.
Equipment used for experiments and data collection were maintained and regularly calibrated.
There are no known omissions in the data. However, the field work for the hydrologic and vegetative components were delayed until the second year of study; this delay resulted in an extension of eight months to provide a full growing season.
Methodology_Type: Lab
Methodology_Keyword_Thesaurus: None
Methodology_Keyword: GIS
Methodology_Keyword: georeference
Methodology_Keyword: base maps
Methodology_Keyword: digital orthophoto quadrangles
Methodology_Keyword: DOQ
Methodology_Keyword: color infrared aerial photography
Methodology_Keyword: scanning
Methodology_Keyword: ground control points
Methodology_Keyword: habitat descriptors
Methodology_Keyword: delineation
Methodology_Keyword: control boundaries
Aerial image compilation - Spatial data were acquired for the spatial analyses of pre and post treatment sites for five time periods. The 1998 DOQ and 2001 color infrared photography was obtained for the sites. Aerial photography for the three remaining time periods were flown under contract in April 2003, December 2003, and December 2004. These aerial images were scanned and georeferenced using ground control points. Using the datasets, boundaries of the sediment treatment and control sites were delineated. Once these sites were delineated, the discrete habitat types were then delineated. With these delineations and GIS software, index and metrics tables for each layer were created and exported into tabular format for further analyses.
Methodology_Type: Field
Methodology_Keyword_Thesaurus: None
Methodology_Keyword: hydrologic
Methodology_Keyword: elevation
Methodology_Keyword: sonde
Methodology_Keyword: water temperature
Methodology_Keyword: specific conductance
Methodology_Keyword: salinity
Methodology_Keyword: water levels
Methodology_Keyword: boardwalk
Methodology_Keyword: quarterly collection
Methodology_Keyword: water depth
Methodology_Keyword: sensors
Methodology_Keyword: datalogger
Methodology_Keyword: correction
Methodology_Keyword: hydrograph model
Methodology_Keyword: transducer
Hydrologic activities - Site were selected and a boardwalk was installed that projected from the east end of the retention levee that intersected the tidal creek. A YSI model 600LS sonde, equipped with multi-sensors and a vented level system was installed. It was positioned in the center of the intersection between the tidal creek and a constructed opening in the north boundary levee and housed in a vertical structure consisting of a 16' treated 4x4" post. It was attached to a 2" PVC pipe that was then placed within a 3" perforated PVC pipe mounted to the post. Water temperature, specific conductance, salinity, water levels, and water depth were measured on a continuous basis; a YSI microcomputer-based datalogger was used to download the data quarterly. Data were then corrected and imported into a tabular format.
Methodology_Type: Lab
Methodology_Keyword_Thesaurus: None
Methodology_Keyword: artificial planting
Methodology_Keyword: nutrients
Methodology_Keyword: vegetative recovery
Methodology_Keyword: experimental design
Methodology_Keyword: treatment
Methodology_Keyword: species
Methodology_Keyword: fertilizer
Methodology_Keyword: split-plot design
Methodology_Keyword: clonally propagated
Methodology_Keyword: replicate
Methodology_Keyword: cover value
Methodology_Keyword: survival
Methodology_Keyword: species composition
Methodology_Keyword: relative abundance
Methodology_Keyword: clip-plot method
Methodology_Keyword: basal diameter
Methodology_Keyword: height
Methodology_Keyword: secondary branching
Vegetative/Nutrient Field study - The experimental design was created to test the three interaction effects: sediment depth to species, species to supplemental nutrients, and elevation to species to nutrients. The design incorporated several treatment variables: depth (0", 6", 9", 12"), species (Spartina alterniflora and patens, Juncus roemerianus, Distichlis spicata, and Avicennia germinans, and unplanted species), and nutrients (fertilized vs unfertilized). A split-plot design was used on the depth variable, and nested between this main plots were the subplot of species and nutrients variables (for a total of 48 treatment combinations; subplots replicated 3 times within the main plot and the main plots 2 times.) The plant material used for the experiment was obtained from a native marsh southwest of Port Fourchon during the fall of 2003 and in the winter of 2003 and spring of 2004 were placed in greenhouses. Once planting was completed, measurements were taken at 30 and 90 days post-planting. Measurements include survival, cover value, species composition, and relative abundance. For the black mangrove species, additional measurements were collected, basal diameter, height, and secondary branching. Percent cover was visually estimated using a 1/2meter squared quadrat divided into quarter quads for visual separation. Species composition and relative abundance was calculated in the lab. A clip-plot method was used to obtain samples. The clipped material was placed in plastic bags, labeled and sent back to the lab for analysis.
Process_Description: See methodology
Process_Date: 2003-2005

The following parameters were collected - for the geospatial component, delineated habitat for five time period (pre and post-treatment). For the hydrologic component, water temperature, salinity, specific conductance, water levels, and water depth were measured. For the vegetative component, percent cover, species composition, survival, and relative abundance were measured for all species in all treatments; additionally basal diameter, height, and secondary branching were measured for the A. germinans. See the cited report for further details on units of measurements.
Materne, Mike and Irving A. Mendelssohn, Brown Marsh Project: Task 5.5 Factors Controlling the Restoration of Brown Marsh Sites with Small Dredge Sediment Enrichment 2005. Louisiana State University.

Contact_Organization: U.S. Geological Survey, National Wetlands Research Center
Contact_Person: Scott Wilson
Contact_Position: Electrical Engineer
Address_Type: Mailing and Physical
Address: 700 Cajundome Blvd
City: Lafayette
State_or_Province: LA
Postal_Code: 70506
Country: USA
Contact_Voice_Telephone: 337 266-8664
Contact_Facsimile_Telephone: 337 266-8513
Contact_Electronic_Mail_Address: scott_wilson@usgs.gov
Although these data have been processed successfully on a computer system at the designated principal investigator’s facility, no warranty expressed or implied is made regarding the accuracy or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data and aggregate use with other data. It is strongly recommended that these data are directly acquired from the official Brown Marsh Database Information Management System server or from the principal investigator, and not indirectly through other sources which may have changed the data in some way. It is also strongly recommended that careful attention be given to the contents of the metadata file associated with these data. The Brown Marsh committee shall not be held liable for improper or incorrect use of the data described and/or contained herein. So, these data are provided as is and without any express or implied warranties. Also, use of trade names or commercial products in the metadata file is solely for the purpose of providing specific information, and does not imply recommendation or endorsement. Any downloading and use of these data signifies a user’s agreement to comprehension and compliance of the disclaimer. Insure all portions of metadata are read and clearly understood before using these data in order to protect both user and principal investigators interests.
Format_Name: Microsoft Excel
Format_Version_Number: 2000+
File_Decompression_Technique: none
Network_Resource_Name: <http://www.brownmarsh.net>
Fees: None, if available online
Custom_Order_Process: None

Metadata_Date: 20060405
Contact_Organization: U.S. Geological Survey/NWRC
Contact_Position: Metadata specialist
Address_Type: Mailing and Physical
Address: 700 Cajundome Blvd
City: Lafayette
State_or_Province: LA
Postal_Code: 70506
Country: USA
Contact_Voice_Telephone: 337 266-8500
Contact_Facsimile_Telephone: 337 266-8513
Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Biological Data Profile of Content Standard for Digital Geospatial Metadata
Online_Linkage: <http://www.fgdc.gov/standards/status/sub5_2.html>
Metadata_Access_Constraints: None
Acknowledgement of the National Wetlands Research Center as the metadata source would be appreciated. Please cite the original metadata when using portions to create another record for slightly altered data, such as reprojection.

Generated by mp version 2.7.33 on Thu Apr 06 12:52:02 2006