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GCE-LTER Data Set Summary
Accession:
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MSH-GCED-1904
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Research Theme:
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Marsh Ecology (Directed Study)
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Contributors:
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Merryl Alber, Jessica O'Connell
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Title:
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Continuous soil temperature measurements at 10 cm depth from 3 month-long deployments in summer and winter within the Georgia Coastal Ecosystems Long Term Ecological Research (GCE-LTER) site in 2017 and 2018
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Abstract:
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To understand the influence of marsh elevation and flooding on soil temperature in Spartina alterniflora marsh, we measured soil temperature at 10 cm depth along two transects that spanned a marsh edge to interior gradient. We then associated those measurements with elevation, creek water height and vegetation characteristics. Soil temperature was logged every 15 min with a Hobo Onset Tidbit Pendant Temperature probe in Spartina alterniflora-dominated marsh near the Georgia Coastal Ecosystems Long Term Ecological Research (GCE-LTER) eddy covariance flux tower. Measurements were collected along two transects of approximately 250 m in length from 18 plots (transect 1) or 20 plots (transect 2) and over 3 sample deployments of approximately 1 month in length: 27 Jul - 31 Aug 2017 (transect 1), 8 Jan - 13 Feb 2018 (transect 1) and 23 Aug - 18 Sep 2018 (transect 2). Plot elevations along each transect were measured with a Trimble R6 RTK after probes were installed in the marsh. Creek water heights were estimated with the pressure transducer associated with the GCE-LTER eddy covariance flux tower data. Spartina alterniflora height forms were measured for each sample station during August as the mean of all stem heights within 0.25 m quadrants centered over each soil probe location. While these data are 24 hr soil temperature measurements, during all three deployments, we found that daily mean soil temperature was negatively correlated with marsh elevation on the marsh platform during low tide conditions, which represented the majority of the observations.
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DOI:
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10.6073/pasta/db52896274df333805f2043efb7e5710
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Key Words:
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Climate Monitoring, elevation, GCE, Georgia, monthly, roots, salt marshes, Sapelo Island, soil temperature, soils, summer, temperature, wetlands, winter
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LTER Core Area:
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Other Site Research
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Research Themes:
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Marsh Ecology |
Study Period:
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27-Jul-2017 to 18-Sep-2018
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Study Sites:
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GCE_Flux -- GCE Flux Tower Marsh, Sapelo Island, Georgia
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Publications:
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Alber, M. and O'Connell, J.L. 2019. Elevation drives gradients in surface soil temperature within salt marshes. Geophysical Research Letters. 46:5313-5322. (DOI: https://doi.org/10.1029/2019GL082374)
O'Connell, J.L., Mishra, D., Alber, M. and Byrd, K.B. 2021. BERM: A belowground ecosystem resilience model for estimating Spartina alterniflora belowground biomass. New Phytologist. (DOI: 10.1111/nph.17607)
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Downloads:
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Data Table: MSH-GCED-1904_soil_temp (Soil temperature data table, 169643 records)
Access: Public (released 24-Apr-2019)
Metadata: Text (ESA FLED),
XML (Ecological Metadata Language)
Data Formats: Spreadsheet (CSV) [17043.92kb], Text File [16711.89kb], MATLAB (GCE Toolbox) [2570.54kb], MATLAB (Variables) [2571.80kb], Text Report [17784.87kb]
Column List:(display)
Column |
Name |
Units |
Type |
Description |
1 |
Local_time |
YYYY-MM-DD HH:MM:SS |
string |
Sampling time in local time (EDT in summer, EST in winter) |
2 |
GMT |
YYYY-MM-DD HH:MM:SS |
string |
Sampling time in GMT |
3 |
deployment |
none |
integer |
sample deployment (period) 1, 2, or 3 |
4 |
transect |
none |
integer |
transect id |
5 |
plot |
none |
integer |
location id |
6 |
transect_dist |
meters |
floating-point |
Distance in m from the transect origin |
7 |
soil_temp |
Celsius |
floating-point |
soil temperature at 10 cm depth |
8 |
RTK_elevation |
meters |
floating-point |
relative to NAVD88 measured with RTK |
9 |
utm_east |
meters |
floating-point |
UTM coordinates for the x direction, Datum NAD83 UTM Zone 17N |
10 |
utm_north |
meters |
floating-point |
UTM coordinates for the y direction, Datum NAD83 UTM Zone 17N |
11 |
spartina_height_form |
none |
string |
Spartina Height Form (short, medium, tall) at the sample location |
12 |
avg_plant_height |
meters |
floating-point |
average plant height in meters from a 0.25 m plot at the sample location |
13 |
mean_water_level_creek |
meters |
floating-point |
from the GCE-LTER flux tower pressure transducer |
GIS Keyhole Markup Language File: MSH-GCED-1904_tidbit_transect_locations (locations of soil temperature samples)
Access: Public (released 24-Apr-2019)
Metadata: XML (Ecological Metadata Language)
Data Formats: Google Earth Keyhole Markup Language (KML) file [19.7 kb]
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Statistics:
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Generate script code to retrieve data tables for analysis in: MATLAB, R, SAS, SPSS |
Citation:
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Alber, Merryl. 2019. Continuous soil temperature measurements at 10 cm depth from 3 month-long deployments in summer and winter within the Georgia Coastal Ecosystems Long Term Ecological Research (GCE-LTER) site in 2017 and 2018. Georgia Coastal Ecosystems LTER Project, University of Georgia, Long Term Ecological Research Network. http://dx.doi.org/10.6073/pasta/db52896274df333805f2043efb7e5710
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