This dataset provides species count data collected during the Fall 2022 drop sampling season at 52 sites near Port Fourchon, Louisiana. The sampling effort aimed to assess the abundance and composition of estuarine nekton species across a landscape experiencing significant climate-driven habitat change, including mangrove encroachment and marsh loss. Species counts were obtained using a drop sampler with a 1.2 m² area, deployed along the marsh edge at each site. Nekton within the sampler were ca...
Show moreSites were selected using a spatially balanced random design. 20 sites were mixed (25%-75% marsh), marsh (>75% Marsh), and mangrove (>75% mangrove) for a total of sixty sites. Not all sites were able to be sampled during this season due to time constraints. Water depth was taken in the center of the drop sampler and had to be >10cm. Salinity and temperature were measured using a YSI probe. Model#: 30M-10 FT
Sampling was done in the daytime during high tide when water was on the marsh or mangrove platform, dropping a fiberglass ring encompassing 1.2 m2 of the habitat edge at each sampling site (methods from Zimmerman et al., 2000). A suction pump with a 1 mm mesh screen over the outflow was used to remove water within the ring while capturing small organisms. Remaining fauna were collected with dipnets or by hand. Collected samples were immediately pleaced on ice to be frozen until processing.
Leavitt, H., Thomas, A., Nelson, J. (2025) Species counts, site-level information and environmental context sampled near Port Fourchon, Louisiana from September 23 - 29, 2022.. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2025-01-02 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/947784 [access date]
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