Louisiana Marsh Management Plan 1995

Metadata Updated: February 8, 2018

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 May 19, 2017
Metadata Created Date March 28, 2016
Metadata Updated Date February 8, 2018
Reference Date(s) (publication)
Frequency Of Update asNeeded

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Harvested from NOAA CSW Harvest Source

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Resource Type Dataset
Metadata Date May 19, 2017
Metadata Created Date March 28, 2016
Metadata Updated Date February 8, 2018
Reference Date(s) (publication)
Responsible Party (Point of Contact, ); Southeast Fisheries Science Center (Custodian)
Contact Email
Access Constraints 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
Guid gov.noaa.nmfs.inport:8622
Harvest Object Id 148ec195-e270-4498-9337-c019eb6248ce
Harvest Source Id 2aed8e29-fc5b-4cde-aa66-fb1118fd705e
Harvest Source Title NOAA CSW Harvest Source
Metadata Language eng
Metadata Type geospatial
Progress onGoing
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True

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