Date of Award

Spring 5-4-2024

Document Type


Degree Name

Bachelor of Science (BS)


Marine Science


College of Science

First Advisor

Angelos Hannides


Tidal creeks in the Grand Strand of South Carolina are small but numerous connectors between land and ocean. One of these creeks, White Point Swash, exhibits a seasonal switch between planktonic and benthic photosynthesizers. As plankton become less abundant in fall, benthic macroalgae bloom, aided by lower water levels due to fall-winter dredging of the main channel, until late Spring. This study builds on previous findings and examines sedimentary conditions at this site further. Sedimentary chlorophyll a (in microphytobenthos) and pore water nutrient concentrations are confirmed to be higher than water-column concentrations. Sedimentary nutrient fluxes to the sediment-water interface, calculated using Fick’s First Law, are high and are presumed to drive the observed abundant microphytobenthos and benthic macroalgae. Considering the eutrophication risks posed by blooms of phytoplankton and macroalgae, this study provides further insight into the ecological function of this and other urbanized tidal creeks in the region.