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GCE-LTER Project News

April 2024 Calendar

Flux Vegetation Monitoring
date: 04/19/2024
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Water Quality Cruise
date: 04/22/2024
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Latest Data Releases

03/23/2024 – Data Release

Data set titled 'Eddy covariance 30-minute CO2 fluxes with accompanying biophysical variables from the GCE-LTER flux tower site from January 2014 to December 2022 for sensor Flux2' was added to the GCE data catalog.  You can view the data set here:  MSH-GCET-1402a.

Abstract:  Eddy covariance (EC) CO2 fluxes from sensor set "Flux2" from January 2014 to December 2022 collected over a Spartina alterniflora marsh located on the western side of Sapelo Island bounded by the Duplin River and Barn Creek. EC fluxes were processed in EddyPro 7. Additional biophysical variables included are air temperature, relative humidity, vapor pressure deficit, and water table height from a nearby tidal creek and the marsh platform.

Citation:  Hawman, Peter. 2024. Eddy covariance 30-minute CO2 fluxes with accompanying biophysical variables from the GCE-LTER flux tower site from January 2014 to December 2022 for sensor Flux2. Georgia Coastal Ecosystems LTER Project, University of Georgia, Long Term Ecological Research Network. http://dx.doi.org/10.6073/pasta/c65b7eb8d7c46f1ff50a98d032125ebf

03/23/2024 – Data Release

Data set titled 'Eddy covariance 30-minute CO2 fluxes with accompanying biophysical variables from the GCE-LTER flux tower site from January 2014 to December 2017 for sensor Flux1' was added to the GCE data catalog.  You can view the data set here:  MSH-GCET-1402.

Abstract:  Eddy covariance (EC) CO2 fluxes from flux sensor set "Flux1" from January 2014 to December 2017 collected over a Spartina alterniflora marsh located on the western side of Sapelo Island bounded by the Duplin River and Barn Creek. EC fluxes were processed in EddyPro 7. Additional biophysical variables included are air temperature, relative humidity, vapor pressure deficit, and water table height from a nearby tidal creek and the marsh platform.

Citation:  Hawman, Peter. 2024. Eddy covariance 30-minute CO2 fluxes with accompanying biophysical variables from the GCE-LTER flux tower site from January 2014 to December 2017 for sensor Flux1. Georgia Coastal Ecosystems LTER Project, University of Georgia, Long Term Ecological Research Network. http://dx.doi.org/10.6073/pasta/d82c2f5c5f0b1781b664de0889a141b4

09/01/2023 – Data Release

Data set titled 'Wrack classification data based on UAV imagery from Dean Creek on Sapelo Island, GA' was added to the GCE data catalog.  You can view the data set here:  GIS-GCET-2308

Abstract:  We used a DJI Matrice 210 UAV with a MicaSense Altum to collect a total of 20 images from January 2020 - December 2021 in a the Dean Creek marsh on Sapelo Island, GA. Wrack was classified using a principal component analysis. Wrack patches under 1 m2 were excluded from analyses. Wrack classifications were converted to polygon and point data where each point represents a 5 cm x 5 cm pixel. Those files were then used to analyze wrack characteristics, their relation to environmental drivers, and landscape based patterns. For both polygon and point data, we used the National Elevation Dataset (https://gdg.sc.egov.usda.gov/Catalog/ProductDescription/NED.html) to determine the elevation of each wrack patch. Creeks and shorelines were digitized and used to determine each wrack patches' distance to water. We calculated the frequency of wrack deposition at each point by adding together the number of images where that pixel was classified as wrack over the course of the study. Polygon data were related to tide height from a NOAA tidal station data product (Ft. Pulaski, Station 8670870; https://tidesandcurrents.noaa.gov) and wind speed and wind direction from the Marsh Landing weather station (downloaded data for the SAPMLMET met station from: https://cdmo.baruch.sc.edu/) to evaluate the relationship of wrack to environmental drivers.

Citation: Lynn, Tyler. 2023. Wrack classification data based on UAV imagery from Dean Creek on Sapelo Island, GA. Georgia Coastal Ecosystems LTER Project, University of Georgia, Long Term Ecological Research Network.  http://dx.doi.org/10.6073/pasta/964d3375e5bbc81847fa72093bb087ef

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Latest File Uploads

04/17/2024 – Spreadsheet (GCE only)
Maintenance log for the GCE Flux Tower (details)

03/29/2024 – Spreadsheet (GCE only)
GCE LTER Equipment Available for Loan (details)

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GCE Project Announcements

03/29/2024 – Publication News

NEE annaul budget from our EC tower site from 2014 to 2022.

https://doi.org/10.1029/ 2023JG007866: JGR_Biogeosciences_-_2024_-_Hawman_-_Canopy_Heterogeneity_and_Environmental_Variability_Drive_Annual_Budgets_of_Net.pdf (1475kb)

(contact Deepak Mishra for additional information)
02/21/2024 – Personnel News

We're re-advertising this position to get a larger pool of candidates.

The Georgia Coastal Ecosystems LTER program (https://gce-lter.marsci.uga.edu/) seeks a research technician to assist with studies of coastal ecology. Work will involve studies of water quality, soils, and wetland plants and animals. This Research Technician II position is based at the UGA Marine Institute on Sapelo Island, GA. The selected individual will work with other technicians, faculty and students at the field site.

The minimum qualification for the position is an Associate’s degree and some relevant experience; however, candidates with 4-year degrees in an environmental field (Biology, Chemistry, Geology) and significant experience will be the most competitive. Candidates must be able to operate pickup trucks, and have basic computer skills, including experience with email, word-processing, and spreadsheet programs. Let us know if you have any of the following useful skills or training: US Coast Guard Captains license, small boat piloting experience, drone pilot license, drone piloting experience, GIS.

Physical Demands: The position will occasionally require strenuous physical activity and irregular hours. Much of the work is done outdoors in hot, muddy, and buggy conditions. Work Hours: Generally, 8:30 – 5:00 M – F; although field work may require early or late hours and occasional weekends.

Apply by March 13, 2024 for full consideration.

Salary: Minimum $33K, but commensurate with experience

Apply: https://www.ugajobsearch.com/postings/353433

(contact Steve Pennings for additional information)
01/31/2024 – Employment

The application form for GCE 2024 summer internships is now live! https://gce-lter.marsci.uga.edu/public/employment/summer_internships_2024.asp We have five positions advertised this year. Please pass on the information to interested undergrads.

(contact Steve Pennings for additional information)
01/26/2024 – Publication News

Wang et al (Wang, Yinhua, Hongyu Guo, Merryl Alber, Steven C. Pennings. 2024. Variance reflects resilience to disturbance along a stress gradient: experimental evidence from coastal marshes. Ecology 2024;e4241. https://doi.org/10.1002/ecy.4241.) is now published. This paper, which had its origin in an experiment that Steve's student Hongyu started in 2006, is the key connection between what we studied in GCE IV (disturbance) and what we're proposing for GCE V (variance). 

(keep reading)

(contact Steve Pennings for additional information)
01/22/2024 – Personnel News

We'd like to welcome the new GCE LTER technician, Emily Pace. A native of Paulding county Georgia, Emily completed her undergraduate education as a Biology major at the University of North Georgia. She has previous experience on Sapelo engaging in research with Nancy Dalman. Most recently, Emily was a lab technician with the Department of Community Supervision. She enjoys baking and participating in outdoor activities.

photograph
GCE Technician Emily Pace

(contact Steve Pennings for additional information)
03/20/2023 – Field Program News

UNCW students Mina Surprenant and MB Fleming work with GCE Technician, John Williams, to install rod SETs near existing pipe SETs. Two of the pipe SETs corroded in the past year or two, so we are installing rod SETs near all the old pipe SETs hoping to continue the record rather than losing it with a replacement once the pipes do fail. A great team, indeed!

(keep reading)

(contact Lori Sutter for additional information)

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NSF

This material is based upon work supported by the National Science Foundation under grants OCE-9982133, OCE-0620959, OCE-1237140 and OCE-1832178. Any opinions, findings, conclusions, or recommendations expressed in the material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.