Short Citation:
Southeast Fisheries Science Center, 2021: Louisiana Marsh Management Plan 1995,

Item Identification

Title: Louisiana Marsh Management Plan 1995
Short Name: LMMP Project 1995
Status: In Work

We sampled experimental research areas in the Barataria Basin of Louisiana during March and May, 1995, to examine the effects of structural marsh management on habitat use by small nekton (100 mm total length TL or carapace width CW). The research areas consisted of two control (unmanaged) marshes and two impounded (managed) marshes managed areas were surrounded by levees with water-control structures constructed by the U.S. Department of Interior, National Biological Survey. We conclude that the restricted water exchange in marshes under structural marsh management diminishes recruitment and standing stocks of species that must migrate from coastal spawning sites to marsh nurseries. Even when water-control structures were open, the densities of these transient species were low inside managed areas. In contrast to the negative effect of management on transient species, the resident fish and crustacean populations seemed to flourish in the managed areas when a drawdown was not in effect. Following two months of a drawdown, however, the populations of residents appeared similar inside and outside managed areas. Increases in submerged aquatic vegetation (SAV) within ponds occurred outside the managed areas during the study period, but not inside managed areas. Because many resident species were closely associated with the SAV, the effect of management on SAV may have been responsible for the distribution patterns of resident species.


The purpose of this study was to test the effects of structural marsh management on habitat use by fishery species and other nekton before and after a spring drawdown of managed areas.


Management effects on habitat selection by nekton in the Barataria Basin system of coastal Louisiana: 1995. LMMP 1995 study


Theme Keywords

Thesaurus Keyword
None 1-m2 throw trap
None 1.14-m diameter cylindrical drop trap
None abundance
None brown shrimp
None crabs
None distribution
None estuarine dependent
None Farfantepenaeus aztecus
None Farfantepenaeus duorarum
None fish
None invertebrates
None Litopenaeus setiferus
None macrofauna
None marsh management
None nekton
None pink shrimp
None salt
None salt marsh
None submerged aquatic vegetation
None white shrimp

Temporal Keywords

Thesaurus Keyword
None 1995

Spatial Keywords

Thesaurus Keyword
None Gulf Of Mexico
None Louisiana
None submerged aquatic vegetation

Physical Location

Organization: Southeast Fisheries Science Center
City: Miami
State/Province: FL
Country: USA
Location Description:

Location Of The Main Office Of The South East Fisheries Science Center

Data Set Information

Data Set Scope Code: Data Set
Data Set Type: Files
Maintenance Frequency: As Needed
Data Presentation Form: Table (digital)

Support Roles

Data Steward

CC ID: 282221
Date Effective From: 1995
Date Effective To:
Contact (Person): Rozas, Lawrence P
Contact Instructions:

Contact by email preferred.


CC ID: 279475
Date Effective From: 1995
Date Effective To:
Contact (Organization): Southeast Fisheries Science Center (SEFSC)
Address: 75 Virginia Beach Drive
Miami, FL 33149
Phone: (305)361-5761
Business Hours: 8:00 a.m. - 4:30 p.m. EST
Contact Instructions:

Contact by email preferred.

Metadata Contact

CC ID: 279476
Date Effective From: 1995
Date Effective To:
Contact (Person): Rozas, Lawrence P
Contact Instructions:

Contact by email preferred.

Point of Contact

CC ID: 284989
Date Effective From: 2016
Date Effective To:
Contact (Person): Baumer, Tim J
Address: 4700 Avenue U
Galveston, TX 77551
Email Address:
Phone: 409-766-3784
Contact Instructions:

Contact by email preferred.


Currentness Reference: Ground Condition

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 279480
W° Bound: -90.091839
E° Bound: -90.035362
N° Bound: 29.56853
S° Bound: 29.540457

Gulf Of Mexico

Extent Group 1 / Time Frame 1

CC ID: 279479
Time Frame Type: Discrete
Start: 1995

Access Information

Security Class: Unclassified
Data Access Policy:

To fishery Scientists and other qualified researchers upon request.

Data Access Procedure:

Contact Jim Ditty

Data Access Constraints:


Data Use Constraints:

Data set is not for use in litigation. While efforts have been made to ensure that these data are accurate and reliable, NOAA cannot assume liability for any damages or misrepresentations caused by inaccuracies in these data, or as a result of these data being used on a particular system. NOAA makes no warranty, expressed or implied, nor does distribution constitute any such warranty

Distribution Information

Distribution 1

CC ID: 284994
Start Date: 2018
End Date: Present
Download URL:
Distributor: Southeast Fisheries Science Center (SEFSC) (1995 - Present)
File Name:


File Type: Multiple formats
Compression: Zip
Review Status: Not Chked



CC ID: 33933

meta data record

Technical Environment


pc files

Data Quality


Data were entered into spreadsheets and checked against the raw data sheet to avoid entry errors

Quality Control Procedures Employed:

Each sample was assigned a unique identification code. Field collected samples were tagged redundantly (e.g. one label inside of the collection vessel and a matching label attached to the outside of the vessel). The identifier and its associated information (e.g. date, location, habitat) was recorded on field data sheets. Once a sample arrived at the laboratory, the label remained with the sample throughout the various stages of sample processing. After data were entered into an Excel spreadsheet or similar database file, the information was printed out and compared against the field data sheets by two biologists. Corrections were made at this time and saved. The electronic file was also sorted and examined by the Lab Supervisor or other project personnel in a variety of ways to look for outliers, missing data, and other potential errors.

Data Management

Have Resources for Management of these Data Been Identified?: No
Approximate Percentage of Budget for these Data Devoted to Data Management: 0
Do these Data Comply with the Data Access Directive?: Yes
Is Access to the Data Limited Based on an Approved Waiver?: Yes
If Distributor (Data Hosting Service) is Needed, Please Indicate: No
Approximate Delay Between Data Collection and Dissemination: 365
If Delay is Longer than Latency of Automated Processing, Indicate Under What Authority Data Access is Delayed:

This data is currently wavered under the current NOAA guidelines for relational databases.

Actual or Planned Long-Term Data Archive Location: To Be Determined
If To Be Determined, Unable to Archive, or No Archiving Intended, Explain:

The archival process is currently under development.

Approximate Delay Between Data Collection and Archiving: 365
How Will the Data Be Protected from Accidental or Malicious Modification or Deletion Prior to Receipt by the Archive?:

The data resides on a secure government network requiring multi-factor authentication for network access.


Process Steps

Process Step 1

CC ID: 284993

After sample collection, laboratory and field data were entered into an Excel spreadsheet or data base file (DBF) using database manager software and a text file was created to describe these data and associated variables. Entered data were checked against field data sheets to minimize entry errors. Samples were processed in the laboratory. After samples were sorted, and specimens identified and measured, information was entered into an Excel spreadsheet or DBF file, and printed out. Quality control was provided by comparing entered data against the specimen identification (ID) sheet by one biologist reading from the ID sheet and a second biologist checking the data print-out. Corrections were made at this time, saved, and a back-up copy made. Hard copies of the files were then printed, and provided to the Principal Investigator. A print-out was also stored in the project folder along with the original field and laboratory data sheets.

Child Items

Rubric scores updated every 15m

Rubric Score Type Title
Entity (ENT) LMMP_1995tblFishlength.csv
Entity (ENT) LMMP_1995tblInvertMass.csv
Entity (ENT) LMMP_1995tblPenaeids.csv
Entity (ENT) LMMP_1995tblfishmass.cs
Entity (ENT) LMMP_1995tblinvertlength.csv
Entity (ENT) LMMP_1995tblssamples.csv
Document (DOC) readme_8622.pdf
Entity (ENT) tblsamples_codes_values.csv

Catalog Details

Catalog Item ID: 8622
Metadata Record Created By: Lee M Weinberger
Metadata Record Created: 2008-12-13 19:53+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2020-05-04 14:58+0000
Metadata Record Published: 2016-03-16
Owner Org: SEFSC
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Next Review Date: 2017-03-17