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GCE-LTER Project News

September 2021 Calendar

Remote Sensing Meeting
date: 09/21/2021
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Disturbance VTC
date: 09/24/2021
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High Marsh Meeting
date: 09/28/2021
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New or Updated Publications

09/07/2021 –
Zhang, Y., Pennings, S.C., Liu, Z., Li, B. and Wu, J. 2021. Consistent pattern of higher lability of leaves from high latitudes for both native Phragmites australis and exotic Spartina alterniflora. Functional Ecology. 35:2084-2093. (DOI: https://doi. org/10.1111/1365-2435.13826)
08/28/2021 –
Morris, J., Cahoon, D., Callaway, J., Craft, C.B., Neubauer, S.C. and Weston, N.B. 2021. Marsh Equilibrium Theory: Implications for Responses to Rising Sea Level. Pages 157-177 in: Fitzgerald, D. and Hughes, Z. (editors). Salt marshes: Functions, dynamics, and stresses. Cambridge University Press.
07/29/2021 –
Gries, C., Beaulieu, S., Brown, R.F., Elmendorf, S., Garritt, H., Gastil-Buhl, G., Hsieh, H.-Y., Kui, L., Martin, M., Maurer, G., Nguyen, A.T., Porter, J., Sapp, A., Servilla, M. and Whiteaker, T.L. 2021. Data Package Design for Special Cases. In: . EDI. (DOI: 10.6073/pasta/9d4c803578c3fbcb45fc23f13124d052)

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Latest Data Releases

03/11/2021 – Data Release

Historic Palmer Drought Severity Index data sets and plots for Georgia Division 9 have been updated in the GCE Data Portal to cover the period of January 1895 to February 2021. These indices are useful for characterizing the timing and severity of drought events in the long-term climate record. The data were downloaded from NOAA and converted into tabular data sets with decoded state and date columns to simplify filtering, plotting and analysis. More information about these indices and data sets is available here.

03/02/2021 – Data Release

Provisional CTD data from the GCE Mini-Cruises are now processed and online.  https://gce-lter.marsci.uga.edu/private/app/ctd_data.asp

06/19/2020 – Data Release

Peter Hawman in Deepak Mishra's lab submitted four data sets including eddy covariance analysis from the GCE-LTER flux tower and the Mishra flux tower at the Grand Bay NERR site in Mississippi as well as leaf area index data from the sites:

MSH-GCET-2006: Eddy covariance 30-minute CO2 fluxes with accompanying biophysical variables from the GCE-LTER flux tower site from December 2018 to January 2020

MSH-NASA-2006: Eddy covariance 30-minute CO2 fluxes with accompanying biophysical variables from the Grand Bay, Mississippi flux tower site from March 2018 to January 2019

PLT-NASA-2006a: Leaf area index for Spartina alterniflora near the GCE-LTER Flux Tower in 2018 and 2019

PLT-NASA-2006b: Leaf area index and above ground biomass for Juncus roemerianus in the Grand Bay National Estuarine Research Reserve from 2015 to 2019

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Latest File Uploads

09/14/2021 – Other (GCE only)
Derived data products from the GCE Eddy Covariance Flux Tower monitoring program (details)

09/08/2021 – Spreadsheet (GCE only)
Maintenance log for the GCE Flux Tower (details)

06/23/2021 – Presentation
GCE-LTER Cyber-Infrastructure (details)

06/22/2021 – Document
GCE Mid-Term Review Schedule, June 28-30, 2021 (details)

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GCE Project Announcements

07/25/2021 – Publication News

Morris, J., D. Cahoon, J. Callaway, C. Craft, S. Neubauer, and  N. Weston. 2021. Marsh Equilibrium Theory:  Implications for Responses to Rising Sea Level. Pp. 157-177. In, D. Fitzgerald and Z. Hughes (ed.), Salt marshes: Functions, dynamics, and stresses. Cambridge University Press.

(contact Chris Craft for additional information)
07/15/2021 – Personal Observation

At the north end of Cabretta Island, Spartina alterniflora is re-invading the island and forming marsh again. Because there currently are scattered clones, it is easy to see dramatic variation in clonal morphology. Here you see one clone that is tall and very clumped, and another that is short and sparse. I've seen similar variation in a newly-forming Spartina marsh in China. You don't see the short forms in mature marshes because they are hidden (or outcompeted) by the tall ones. But what advantages allow them to persist in nature? There's a research opportunity here for an enterprising graduate student.

(keep reading)

(contact Steve Pennings for additional information)
07/04/2021 – Research News

The GCE is participating in DRAGNet, a global, distributed experiment that crosses disturbance treatments with nutrient additions to see how ecosystems respond to severe disturbances. We're actually roto-tilling plots in the field three years in a row to implement the disturbance! The experiment fits in well with the GCE emphasis on studying disturbance over the current funding cycle.

photograph
GCE REU student Zahrria roto tilling DRAGNet plot

(contact Steve Pennings for additional information)

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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.