Abstract:

This dataset presents field measurements and experimental data on bacterial abundance, bacterial protein production, and activities of hydrolytic enzymes in bottom waters near OC26. In situ measurements also include observations of suspended particle abundance and sizes throughout the water column, using a combined camera-CTD system (marine snow camera, MSC). Laboratory experiments were conducted with roller bottles filled with bottom water and amended with experimentally resuspended sediments from the study area.

Suggested Citation:

Kai Ziervogel. 2016. Dataset for: Enhanced particle fluxes and heterotrophic bacterial activities in bottom waters near OC26 following Hurricane Isaac. Distributed by: GRIIDC, Harte Research Institute, Texas A&M University–Corpus Christi. doi:10.7266/N75B00H4

Publications:

Ziervogel, K., Dike, C., Asper, V., Montoya, J., Battles, J., D׳souza, N., … Arnosti, C. (2015). Enhanced particle fluxes and heterotrophic bacterial activities in Gulf of Mexico bottom waters following storm-induced sediment resuspension. Deep Sea Research Part II: Topical Studies in Oceanography. doi:10.1016/j.dsr2.2015.06.017

Purpose:

Water column survey near the sunken wellhead shortly after Hurricane Isaac passed the area to determine possible resuspension of sedimented oil; the survey was conducted as part of the ECOGIG water column cruise.

Data Parameters and Units:

OC26 Activities: Station ID; Station.Cast; Depth (m); Cells (bacterial abundance, cells L-1); Peptidase (peptidase activity rate, nM h-1, amol cell-1 h-1, pM hr-1); Glucosidase (glucosidase activity rate, nM h-1, amol cell-1 h-1, pM hr-1); Leu incorp (leucine incorporation rate, pmol L-1 h-1, fmol C cell-1 h-1); POC_sed trap: trap (OC Kiel, OC top); start date (mm/dd/yy); end date (mm/dd/yy); Combined average DW (Combined average dry weight, mg/m^2/d), Stde DW (dry weight standard deviation, mg/m^2/d); Average POM (average particulate organic matter, mg/m^2/d); POM StDev (particulate organic matter standard deviation, mg/m^2/d); lithogenic (lithogenic material, mg/m^2/d); POM/DW (ratio of particulate organic matter to dry weight); Roller exp_Polys hydrolysis and Leu incorp: BW+seds (bottom water + sediments); BW (bottom water); Hydrolysis rates (nmol monomer L-1 hr-1, monomers = chrondrotin (chron), laminarin (lam), xylan (xly), pullulan (pull); arabinogalactan (ara); fucoidan (Fu); Post-roller BW leucine incorporation (leucine incorporation assays conducted after 3, 7, 14, and 22 day incubation on roller table; incubation time (h); dpm (detections per minute); dpm-blank (detections per minute - blank); % incorporation (percent of leucine incorporated into biomass); incorporation rate (pmol/L/hr); average; range Roller exp_cell counts: cell counts during FLA incubation; BW+seds (bottom water + sediments); BW (bottom water); monomers = chrondrotin (chron), laminarin (lam), xylan (xly), pullulan (pull); arabinogalactan (ara); fucoidan (Fu); date (mm/dd/yyyy); volume filtered (mL); slide #; picture #; # of counted cells; average # of counted cells; standard deviation; filter area (um2); area of pic (um2); cells/filter; cells/mL; standard deviation Snow Cam with CTD data: Depth (m); DSCN (image number); particles per liter by area (bins in mm2); particles per liter by aspect ratio; particles per liter by major axis (bins in mm); particles per liter by minor axis (bins in mm); particles per liter by maximum diameter (bins in mm); particles per liter by minimum diameter (bins in mm); particles per liter by mean diameter (bins in mm); particles per liter by perimeter (bins in mm); particles per liter by length (bins in mm); particles per liter by width (bins in mm); time; depth (m); temperature (C); salinity (psu); density; beam c; fluorescence; v-4; v-5; DSCN (image number); total number of particles; Area (mm2); CTD time (HH:MM:SS); CTD depth; image time (HH:MM:SS); calculated depth Physical water column properties (CTD profiles): time (Julian days); elapsed time (s); pressure, digiquartz (db); Depth (m); Temperature (C); conductivity (S/m); Beam Attenuation C (1/m); Altimeter (m); PAR/Irradiance; Fluorescence (mg/m^3); Latitude (degrees); Longitude (degrees); Salinity (psu); Dissolved O2 (mL/L); density (Kg/m^3); sound velocity (m/s); descent rate (m/s); geopotential anomaly (J/Kg); Bacterial enzymatic hydrolysis rates (mol L-1 hr-1); Bacterial biomass production rates (mol L-1 hr-1); Bacterial cell abundance (cells L-1); Particulate organic matter (g L-1)

Individual Files: