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GCE-LTER Project News

August 2016 Calendar

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Latest Data Releases

08/20/2016 – Data Release

A long-term grasshopper monitoring data set (INS-GCES-1608) has been added to the data catalog, combining the annual population monitoring data sets from 2000 to 2016. This synthetic data set includes both the original transect count data by site, species and transect as well as a data table summarizing counts by site and species (i.e. total, minimum, maximum and median). This data set will be updated annually as new monitoring data are processed, along with additional long-term integrated data sets from the GCE marsh and hydrographic monitoring programs.

08/18/2016 – Data Release

The latest historic monthly sea level data from the NOAA CO-OPS tide gauge at Fort Pulaski on the Savannah River are now available in the GCE Data Portal, covering the period July 1935 to July 2016. This data set includes monthly mean water levels relative to a wide variety of tidal datums, such as Mean Sea Level (MSL), Mean Higher High Water (MHHW), Mean Lower Low Water (MLLW), as well as maximum and minimum observed water level. This data set will be updated quarterly or semi-annually moving forward.

08/18/2016 – Data Release

Data Set INS-GCEM-1608 (Fall 2016 grasshopper monitoring -- mid-marsh grasshopper abundance and species diversity at eight GCE LTER sampling sites - Steve Pennings) has been added to the GCE Data Catalog.

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Latest File Uploads

08/24/2016 – Document
SALTEx Total Phosphorus and Total Dissolved Phosphorus Wet Chemistry Protocol (details)

08/24/2016 – Document
SALTEx Reactive Phosphorus Wet Chemistry Protocol (details)

08/24/2016 – Document
SALTEx Total Nitrogen and Total Dissolved Nitrogen Wet Chemistry Protocol (details)

08/24/2016 – Document
SALTEx Ammonium (NH4) Wet Chemistry Protocol (details)

08/23/2016 – Document
SALTEx Quarterly Porewater Sampling Protocol (details)

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GCE Project Announcements

08/26/2016 – Outreach News

The International LTER Network (I-LTER) is establishing an online repository of research sites and datasets to serve as a portal for their sprawling 600-site network. As part of this effort they have asked US LTER sites to provide detailed site profiles for inclusion, and we have now registered the GCE-LTER site in this database (see our entry here). Hopefully this will become a useful resource for discovery of long-term environmental research programs and datasets, and lead to more international collaborations in the future.

(contact Wade Sheldon for additional information)
08/24/2016 – IM News

Microsoft Excel is a ubiquitous tool in research labs and is frequently used for preparation and archiving of data as well as generating tables for publication. A major reason for Excel's prevalence is convenience, but this convenience comes at a price. Features such as automatic conversion and formatting of dates and percentages, auto-correct while typing and auto-incrementing of numbers when copying by range extension can easily corrupt information when entering data. In fact we often encounter these sorts of errors in station codes, sample ids and geographic coordinates when processing GCE data submissions.

(keep reading)

(contact Wade Sheldon for additional information)
08/20/2016 – Website Addition

Links to related data sets have been displayed on data set summary pages in the GCE Data Catalog for many years, but no information about the nature of the relationship has been provided. Descriptions of these data set dependency relationships are now displayed after each accession code hyperlink to provide more information to users. For example, see the 2015 plant biomass data set (PLT-GCEM-1511b) summary that contains links to two allometry data sets and the corresponding abundance data set under "Data References".

(contact Wade Sheldon for additional information)
08/17/2016 – Research News

Steve and Jacob finished the annual grasshopper monitoring today. This was a weak year for grasshoppers. We plan to analyze the accumuated data set in a year or two and try to figure out what controls grasshopper abundance in the GCE domain.

On the way out to the field we noticed that the UGA boat dock was collapsing. Jacob made a couple phone calls and the UGAMI staff had pretty much fixed it by the time we returned. 

Mermiria intertexta grasshopper from GCE domain

(contact Steve Pennings for additional information)
08/10/2016 – Software Release

We are pleased to announce that version 3.9.6 of the GCE Data Toolbox for MATLAB is now available for download. This is an incremental update that includes a number of major bug fixes and minor enhancements added since the April 2016 release. Information about this generalized data management software is available at https://gce-svn.marsci.uga.edu/trac/GCE_Toolbox.

The general public distribution files are available on the GCE Data Toolbox web site at:

The release can also be checked out from the GCE Subversion (SVN) server at:

GCE-LTER distributions, with specialized GCE workflows and metadata templates, are also available at:

(contact Wade Sheldon for additional information)
08/08/2016 – Research News

UGAMI is in the process of installing a new seawater system that will benefit the GCE LTER by providing new options for research. The new seawater system has multiple filtration stages, including a radial separator, bag filtration, settling tanks, a sand filter and UV sterilization. Some of these steps can be bypassed, allowing the user to customize the level of water purity used. The new system should provide a constant pressure no matter how many valves are in use, and should maintain pressure at all tide stages. It will email and call Jacob and UGAMI staff automatically if it breaks down. Not only that, but rumor has it that it cleans itself, does the dishes, never needs feeding, and walks the dog. it should be turned on by the end of this week, with some minor additional work (like fencing and cleanup) extending over the next few weeks. The project was paid for in part with an NSF Field Stations and Marine Laboratories grant.

(keep reading)

(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 and OCE-1237140. 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.