BIODIVERSITY AND DISTRIBUTION OF BENTHIC FORAMINIFERA IN HARRINGTON SOUND, BERMUDA: THE EFFECTS OF PHYSICAL AND GEOCHEMICAL FACTORS ON DOMINANT TAXA
Benthic sediment samples were collected at depths ranging from 3 m to 24 m using an Ekman dredge, while water-quality data were collected using an In-Situ SMAR Troll MP probe. Due to the limited test-size of these taxa, samples < 1 mm and > 0.063 mm were examined. Dead-test and fragment counts were performed after randomizing sample selections with a sediment splitter. Using RStudio and ArcMap, basic, advanced statistical, and geospatial analyses were conducted on each taxon (segregated by test and fragment size) to examine depth-profile and spatial relationships between count data, physical, and geochemical factors.
Preliminary results from multiple quantile regression show that each taxon, under identical depth and spatial constraints, can be accounted for by different functional combinations of variables. In testing multivariate response and factorial influence, initial relative effect estimations and subset algorithms from nonparametric MANOVA effectively quantify abundance tendencies. Additionally, initial spatial maps allude to unexplored factors e.g. water influx from caves and outer reefs, visualizing the potential of hydrochemical influence in certain localities. The results of this study can serve as a baseline model for Neogene carbonate lagoons that accumulated Foraminifera under different climate conditions.