Louisiana Marsh Dieback - Interactive effects of drought, acidity, and heavy metals 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 - Interactive effects of drought, acidity, and heavy metals 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 three of the primary coastal Louisiana plant species. In the Spring of 2000, coastal Louisiana experienced drought conditions. During drought conditions, certain plant species may dieback due to a number of factors. Greenhouse experiments were conducted on three salt marsh plants, Spartina alterniflora, Juncus roemerianus, and Avicennia germinans to help determine if certain stressor factors contributed to this dieback. The concentration levels of pH, iron, and aluminum were varied over 5 and half month period.
Purpose:
To study the interactive effects of drought, acidity, and heavy metals on three salt marsh plants for plant growth responses to determine which factors cound have been more responsible 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: interactive
Theme_Keyword: brown marsh
Theme_Keyword: salt marsh cord-grass
Theme_Keyword: black mangrove
Theme_Keyword: dieback
Theme_Keyword: black needlerush
Theme_Keyword: concentration
Theme_Keyword: saltmarsh
Theme_Keyword: growth response
Theme_Keyword: drought
Theme_Keyword: acidity
Theme_Keyword: heavy metals
Theme_Keyword: aluminum
Theme_Keyword: iron
Theme_Keyword: pH
Theme_Keyword: tolerance
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 General Linear 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:
Each species was treated with the same pH, Al, and Fe concentrations. Replication of treatments for the first two stages was done six times. The last stage's replication was conducted three times. All plants used in the experiments were allow to acclimate or recovery from the transplanting activity.
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: acid washed
Methodology_Keyword: plastic pot
Methodology_Keyword: transplant
Methodology_Keyword: temperature
Methodology_Keyword: Hoagland's solution
Methodology_Keyword: treatment
Methodology_Keyword: salinity
Methodology_Keyword: pH
Methodology_Keyword: sand
Methodology_Keyword: light intensity
Methodology_Keyword: growth chamber
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. One month before experimentation, the soil was carefully washed from the plant roots. The three species were transplanted separately into sand in plastic pots with a hole on the sidewall near the pot's bottom. The holes were covered with a thin layer of sponge to let water drain freely, but retain the sand. About 20 stems of Spartina and Juncus, and 1 plant of Avicennia were transplanted into each plastic poit. After plants' recovery, every 6 experimental units (two from each species) were placed into a plastic tub with the same pH, Al and Fe concentrations, and simulated drought level and other conditions, such as nutrients and salinity, to compare the interactive effects. The experiments were conducted in a growth chamber with light intensity that was altered according to canopy level and daytime/nighttime conditions. Temperature were also altered to mimic day and night conditions. pH levels were maintained through the experiment and the experiment units were flushed with the proper solution daily.
Methodology:
Methodology_Type: Lab
Methodology_Identifier:
Methodology_Keyword_Thesaurus: None
Methodology_Keyword: pH treatment
Methodology_Keyword: metal treatment
Methodology_Keyword: control
Methodology_Keyword: drought treatment
Methodology_Keyword: mortality rate
Methodology_Keyword: leaf expansion
Methodology_Keyword: leaf photosynthetic rate
Methodology_Keyword: leaf fluorescence rate
Methodology_Description:
Experimentation and data collection - Three experimental stages were created for the three plant species. At the first stage, the plants were treated with the pH 4 and pH 2.5 with a four metal combination of Al and Fe (at four different concentration levels) for two months. The second stage lowered the pH level to 3, but with the same four metal combinations for two months. During the last stage, the plants were treated by the controlled drought with water potential at -1.1MP by adding PEG (an osmotic drought agent) to the treatment solution with the same pH 3 for another six weeks; the metal combinations remained the same. The following parameters were measured for plant responses; mortality rate, leaf expansion rate, leaf photosynthetic rate, and leaf fluorescence rate.
Methodology:
Methodology_Type: Lab
Methodology_Identifier:
Methodology_Keyword_Thesaurus: None
Methodology_Keyword: SAS
Methodology_Keyword: statistical analysis
Methodology_Keyword: linear model
Methodology_Keyword: Duncan test
Methodology_Keyword: comparison
Methodology_Description:
Analysis - Statistic analysis was conducted by using SAS's General Linear Model. Duncan test were analyzed to determine the effects of the main factors if interaction was not significant. Least square means was used to compare between individual treatment when the interaction was significant.
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 stand heights, biomass, stem/leaf elongation, etc in this subtask were taken for the overall result, the interactive effects of drought, acidity, and heavy metals 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: 20051107
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 09:12:35 2005