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Louisiana Marsh Management Plan 1995

Metadata Updated: November 1, 2023

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.

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Metadata Date September 28, 2023
Metadata Created Date November 12, 2020
Metadata Updated Date November 1, 2023
Reference Date(s) (publication)
Frequency Of Update asNeeded

Additional Metadata

Resource Type Dataset
Metadata Date September 28, 2023
Metadata Created Date November 12, 2020
Metadata Updated Date November 1, 2023
Reference Date(s) (publication)
Responsible Party (Point of Contact, Custodian)
Contact Email
Guid gov.noaa.nmfs.inport:8622
Access Constraints Cite As: Southeast Fisheries Science Center, [Date of Access]: Louisiana Marsh Management Plan 1995 [Data Date Range],, Access Constraints: None | 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
Bbox East Long -90.035362
Bbox North Lat 29.56853
Bbox South Lat 29.540457
Bbox West Long -90.091839
Coupled Resource
Frequency Of Update asNeeded
Harvest Object Id 9b75f52a-c70d-4c22-9fc0-df1bec4d9965
Harvest Source Id ca759a40-507d-4d0c-8f8c-64b3c5e05066
Harvest Source Title NMFS SEFSC
Licence NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose.
Metadata Language eng
Metadata Type geospatial
Old Spatial {"type": "Polygon", "coordinates": [[[-90.091839, 29.540457], [-90.035362, 29.540457], [-90.035362, 29.56853], [-90.091839, 29.56853], [-90.091839, 29.540457]]]}
Progress underDevelopment
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True

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