GCE CTD monitoring surveys Dr. Daniela Di Iorio University of Georgia

Dept. of Marine Sciences University of Georgia Athens Georgia 30602-3636 USA

daniela@uga.edu http://www.marsci.uga.edu/directory/daniela-di-iorio Dr. Samantha B. Joye University of Georgia

Dept. of Marine Sciences University of Georgia Athens Georgia 30602-3636 USA

mjoye@uga.edu http://www.marsci.uga.edu/directory/samantha-b-joye Georgia Coastal Ecosystems LTER Project

Dept. of Marine Sciences University of Georgia Athens Georgia 30602-3636 USA

gcelter@uga.edu https://gce-lter.marsci.uga.edu/ Dr. Daniela Di Iorio University of Georgia

Dept. of Marine Sciences University of Georgia Athens Georgia 30602-3636 USA

daniela@uga.edu http://www.marsci.uga.edu/directory/daniela-di-iorio Principal investigator Dr. Samantha B. Joye University of Georgia

Dept. of Marine Sciences University of Georgia Athens Georgia 30602-3636 USA

mjoye@uga.edu http://www.marsci.uga.edu/directory/samantha-b-joye Principal investigator 2001-01-01 Dr. Melissa G. Booth University of Georgia Marine Institute

University of Georgia Marine Institute Sapelo Island Georgia 31327 USA

booth@uga.edu Co-investigator Daniel F. Saucedo University of Georgia Marine Institute

University of Georgia Marine Institute Sapelo Island Georgia 31327 USA

dsaucedo@uga.edu Research technician Jacob Shalack University of Georgia Marine Institute

University of Georgia Marine Institute Sapelo Island Georgia 31327 USA

shalack@uga.edu Research technician Kimberley S. Hunter University of Georgia

Dept. of Marine Sciences University of Georgia Athens Georgia 30602 USA

kshunter@uga.edu Research technician 2026

We deploy CTDs to collect vertical profiles of conductivity, temperature and dissolved oxygen at each station. This program transitioned from quarterly cruise sampling (during GCE-I) to monthly sampling during 2006-2007 (GCE-II). An additional monitoring station was added in summer 2008 at the mouth of Altamaha Sound (AL-02) to better capture the near-shore end member for that system.

Area 2: Patterns within the Domain (more information) Question 2: How do the spatial and temporal patterns of biogeochemical processes, primary production, community dynamics, decomposition, and disturbance vary across the estuarine landscape, and how do they relate to environmental gradients? (more information)

conductivity depth dissolved oxygen temperature LTER NSF Georgia GCE cruises Overall geographic extent of the research project -81.582311 -81.154122 31.559628 31.172459 2001-01-01

National Science Foundation grant numbers OCE-9982133 and OCE-0620959

estuary marsh complex Altamaha River - Altamaha River transect used for GCE quarterly hydrographic monitoring surveys. Nominal profiling stations are defined every 2km from -4km to 40km (relative to station 0km at the line of demarcation), based on an estimated Thalweg line running up the main river channel. -81.582311 -81.237936 31.401403 31.296034 Doboy Sound - Doboy Sound transect used for GCE quarterly hydrographic monitoring surveys. Nominal profiling stations are defined every 2km from -2km to 12km and at 12.6km (relative to station 0km at the line of demarcation), based on an estimated Thalweg line running up the main sound channel. -81.368240 -81.242954 31.455664 31.340942 Duplin River - Duplin River transect used for GCE quarterly hydrographic monitoring surveys. Nominal profiling stations are defined at various locations along the Duplin River west of Sapelo Island, Georgia. -81.301987 -81.263124 31.486493 31.410854 Intracoastal Waterway - Intracoastal Waterway transect used for GCE quarterly hydrographic monitoring surveys. Nominal profiling stations are defined at varying distances from -28km to 32km (South to North, relative to station 0km at the sourthernmost tip of Wolf Island near the mouth of the Altamaha River), based on an estimated Thalweg line running up the main channel. -81.439160 -81.257748 31.546850 31.172459 Sapelo River - Sapelo River transect used for GCE quarterly hydrographic monitoring surveys. Nominal profiling stations are defined every 3-4km from 0km to 36km (relative to station 0km at the line of demarcation), based on an estimated Thalweg line running up the main river channel. -81.431980 -81.154122 31.559628 31.516636 Schaeffer, B., Neely, M., Spinosa, A., Serafy, E., Odermatt, D., Weathers, K., Barracchini, T., Bouffard, D., Carvalho, L., Comny, R., De Keukelaere, P., Hunter, P., Jamet, C., Joehnk, K., Johnston, J., Knudby, A., Minaudo, C., Pahlevan, N., Rose, K., Schalles, J.F. and Tzortziou, M. 2021. Integrating inland and coastal water quality data for actionable knowledge. Special Issue: Big Earth Data and Remote Sensing in Coastal Environments. Remote Sensing. 13; 23 July 2021(15):24 p. (DOI: doi.org/10 https://www.mdpi.com/2072-4292/13/15/2899 Alber, M., Schaefer, S.C., Pomeroy, L.R., Sheldon, J.E. and Joye, S.B. 2008. Presentation: Nitrogen inputs to the Altamaha River estuary (Georgia, USA): a historic analysis. American Society of Limnology and Oceanography, 3/08, Orlando, FL. PHY-GCEM-1506a - Monthly vertical profiles of salinity, temperature, pressure, oxygen and photosynthetically-available radiation in Sapelo River, Doboy Sound, Duplin River and Altamaha River transect surveys from April 2008 to April 2015 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=565