Louisiana Marsh Dieback - Acidity tolerance limits and effects on salt marsh plants, Spartina alterniflora, Juncus roemerianus, and Avicennia germinans Task 2.1

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator:
Louisiana State University, Wetland and Biogeochemistry Institute and Department of Oceanography and Coastal Studies
Publication_Date: 2005
Title:
Louisiana Marsh Dieback - Acidity tolerance limits and effects on salt marsh plants, Spartina alterniflora, Juncus roemerianus, and Avicennia germinans Task 2.1
Geospatial_Data_Presentation_Form: Digital tabular data
Larger_Work_Citation:
Citation_Information:
Originator:
Barataria-Terrebonne National Estuary Program Scientific-Technical Committee
Publication_Date: 20010207
Title:
Requests for submission of Scope of Services for Marsh Dieback and Nutria Control Emergency Response
Geospatial_Data_Presentation_Form: document
Publication_Information:
Publication_Place: Thibodaux, LA
Publisher:
Barataria-Terrebonne National Estuary Program Scientific-Technical Committee
Online_Linkage: <http://www.brownmarsh.net/reports/brown_marsh_rfp.pdf>
Description:
Abstract:
This data set consists of experimentation on the primary coastal Louisiana plant species, Spartina alterniflora, Juncus roemerianus, and Avicennia germinans. In drought situations, wetland soils may experience chemical changes upon drying. When some saline sediments are oxidized, microbial oxidation of pyrite and other metal sulfides generates sulfuric acid, which leads to soil acidifications (a decrease in pH). In the Spring of 2000, coastal Louisiana experiened a drought situation, which may have lead to this decrease in pH. Greenhouse experiments were conducted on these species to determine this possible effect.
Purpose:
To study the effects of increasing acidity on three salt marsh plants for plant growth responses to determine if this could have been a factor for the 2000 coastal Louisiana marsh dieback.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 2001
Ending_Date: 2005
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Description_of_Geographic_Extent: Coastal Louisiana
Bounding_Coordinates:
West_Bounding_Coordinate: -93.910681
East_Bounding_Coordinate: -88.777417
North_Bounding_Coordinate: 30.509791
South_Bounding_Coordinate: 28.892107
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: acidity
Theme_Keyword: brown marsh
Theme_Keyword: salt marsh cord-grass
Theme_Keyword: drought
Theme_Keyword: dieback
Theme_Keyword: black mangrove
Theme_Keyword: concentration
Theme_Keyword: saltmarsh
Theme_Keyword: black needlerush
Theme_Keyword: tolerance
Theme_Keyword: pH
Theme_Keyword: drought intensity
Place:
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
Taxonomy:
Keywords/Taxon:
Taxonomic_Keyword_Thesaurus: None
Taxonomic_Keywords: Spartina alterniflora
Taxonomic_Keywords: species
Taxonomic_Classification:
Taxon_Rank_Name: Kingdom
Taxon_Rank_Value: Plantae
Taxonomic_Classification:
Taxon_Rank_Name: Division
Taxon_Rank_Value: Magnoliophyta
Taxonomic_Classification:
Taxon_Rank_Name: Class
Taxon_Rank_Value: Liliopsida
Taxonomic_Classification:
Taxon_Rank_Name: Subclass
Taxon_Rank_Value: Commelinidae
Taxonomic_Classification:
Taxon_Rank_Name: Order
Taxon_Rank_Value: Cyperales
Taxonomic_Classification:
Taxon_Rank_Name: Family
Taxon_Rank_Value: Poaceae
Taxonomic_Classification:
Taxon_Rank_Name: Genus
Taxon_Rank_Value: Spartina
Taxonomic_Classification:
Taxon_Rank_Name: Species
Taxon_Rank_Value: alterniflora
Applicable_Common_Name: smooth cordgrass
Taxonomic_Classification:
Taxon_Rank_Name: Order
Taxon_Rank_Value: Juncales
Taxonomic_Classification:
Taxon_Rank_Name: Family
Taxon_Rank_Value: Juncaceae
Taxonomic_Classification:
Taxon_Rank_Name: Genus
Taxon_Rank_Value: Juncus
Taxonomic_Classification:
Taxon_Rank_Name: species
Taxon_Rank_Value: roemerianus
Applicable_Common_Name: needlegrass rush
Taxonomic_Classification:
Taxon_Rank_Name: Class
Taxon_Rank_Value: Magnoliopsida
Taxonomic_Classification:
Taxon_Rank_Name: Subclass
Taxon_Rank_Value: Asteridae
Taxonomic_Classification:
Taxon_Rank_Name: Order
Taxon_Rank_Value: Lamiales
Taxonomic_Classification:
Taxon_Rank_Name: Family
Taxon_Rank_Value: Verbenaceae
Taxonomic_Classification:
Taxon_Rank_Name: Genus
Taxon_Rank_Value: Avicennia
Taxonomic_Classification:
Taxon_Rank_Name: Species
Taxon_Rank_Value: germinans
Applicable_Common_Name: black mangrove
Access_Constraints:
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.
Use_Constraints:
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.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
Louisiana State University, Wetland Biogeochemistry Institute and Department of Oceanography and Coastal Studies
Contact_Person: Irving A. Mendelssohn
Contact_Position: Professor
Contact_Address:
Address_Type: Physical
Address: Louisiana State University
City: Baton Rouge
State_or_Province: LA
Postal_Code: 70803
Country: USA
Contact_Voice_Telephone: 225 578-6425
Contact_Facsimile_Telephone: 225 578-6423
Contact_Electronic_Mail_Address: imendel@lsu.edu
Native_Data_Set_Environment: Microsoft Excel 2000
Analytical_Tool:
Analytical_Tool_Description: SAS Mixed Model: used to conduct statistical analysis.
Tool_Access_Information:
Online_Linkage: <http://www.sas.com>
Tool_Access_Instructions: See website for information
Tool_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: SAS
Contact_Address:
Address_Type: Mailing
Address: 100 SAS Campus Drive
City: Cary
State_or_Province: NC
Postal_Code: 27513-2414
Country: USA
Contact_Voice_Telephone: 919 677-8000
Contact_Facsimile_Telephone: 919 677-4444


Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
The accuracy of the measured attributes is dependent of the amount of human error, which is unknown. The accuracy of the calculated attributes is dependent on the accuracy of the equations used and the statistical software.
Logical_Consistency_Report:
An equal number of specimens for each species were selected for the three experimental units. All plants were allowed a period of acclimation and recovery from replanting.
Completeness_Report: There are no known omissions in the data.
Lineage:
Methodology:
Methodology_Type: Lab
Methodology_Identifier:
Methodology_Keyword_Thesaurus: None
Methodology_Keyword: collection
Methodology_Keyword: acclimation
Methodology_Keyword: washed
Methodology_Keyword: plastic pot
Methodology_Keyword: stem
Methodology_Keyword: growth chamber
Methodology_Keyword: temperature
Methodology_Keyword: Hoagland's solution
Methodology_Keyword: light intensity
Methodology_Keyword: salinity
Methodology_Keyword: nutrients
Methodology_Keyword: treatment
Methodology_Keyword: pH
Methodology_Keyword: acidity
Methodology_Keyword: ppt
Methodology_Description:
Preparation and setup - Salt marsh plants, Spartina alterniflora, Avicennia germinans, and Juncus roemerianus were acquired for the experiment and potted into commerical potting soil and garden top soil (a 1:1 ratio) and allowed to grow to a satisifactory size before experimentation. The roots of the plants were carefully washed, and the plants were separately transplanted into sand filled plastic pots with 4 holes near the sidewall near the pot's bottom. Ten stems of Spartina and Juncus and one individual of Avicennia were transplanted into each plastic pot. Three experimental units (with one pot of each species) were placed in a plastic tub. All three species will be treated with the same salinity and other conditions to compare its effects. The experiment took place in a growth chamber in which the light intensity for canopy level and day/night conditions and day/night temperatures could be controlled. The tubs were filled with half-strength Hoagland's solution.
Methodology:
Methodology_Type: Lab
Methodology_Identifier:
Methodology_Keyword_Thesaurus: None
Methodology_Keyword: pH
Methodology_Keyword: ppt
Methodology_Keyword: control
Methodology_Keyword: holding treatment
Methodology_Keyword: nutrient solution
Methodology_Keyword: salinity
Methodology_Keyword: leaf expansion rate
Methodology_Keyword: photosynthetic rate
Methodology_Keyword: stem density
Methodology_Keyword: cumulative live shoot height
Methodology_Keyword: plant mortality
Methodology_Description:
Experimentation and data collection - After the recovery period, the level of salinity was increased every week. Nutrient and pH levels were maintained through the experiment. The three experimental units were placed into three treatments, a control, a holding, and a decreasing pH. The pH was decreased at a rate of 1 pH unit every two weeks. The experimental units were flushed with fresh nutrient solution with every decrease in pH level. Plant response to decrease water potential were measured every two weeks and include the following parameters: leaf elongation rate, photosynthetic rate, stem density, cumulative live shoot height, and plant mortality rate.
Methodology:
Methodology_Type: Lab
Methodology_Identifier:
Methodology_Keyword_Thesaurus: None
Methodology_Keyword: SAS
Methodology_Keyword: statistical analysis
Methodology_Keyword: Mixed model
Methodology_Keyword: square means
Methodology_Keyword: Saxton's macro
Methodology_Keyword: percentage
Methodology_Keyword: control
Methodology_Description:
Analysis - Statistical analysis was conducted by using SAS Mixed Model with repeated measurement. Least square means was used to compare between individual treatment when interaction was significant. A Saxton's macro for converting mean separation output to letter grouping in Proc Mixed was used. The measured variables were converted to the percentage of the control of each species.
Process_Step:
Process_Description: See methodology
Process_Date: 2002-2005


Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview:
All measured and calculated attributes, such as leaf expansion, plant mortality, leaf elongation, etc in this subtask were taken for the overall result, the effects of decreasing pH levels on salt marsh plants
Entity_and_Attribute_Detail_Citation:
Mendelssohn, Irv, Brown Marsh Project: Task II.1 Growth Response of Brown Marsh Species Populations to Stressor Factors. 2005. Louisiana State University.


Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey, National Wetlands Research Center
Contact_Person: Scott Wilson
Contact_Position: Electrical Engineer
Contact_Address:
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
Distribution_Liability:
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.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: Microsoft Excel
Format_Version_Number: 2000+
File_Decompression_Technique: none
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: <http://www.brownmarsh.net>
Fees: None, if available online
Custom_Order_Process: None


Metadata_Reference_Information:
Metadata_Date: 20051108
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey/NWRC
Contact_Position: Metadata specialist
Contact_Address:
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
Metadata_Extensions:
Profile_Name:
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
Metadata_Use_Constraints:
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 Wed Dec 14 09:11:55 2005