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GCE-LTER Data Set Summary
Accession:
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PLT-GCEM-1403a
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Research Theme:
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Plant Ecology (Monitoring)
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Contributors:
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Steven C. Pennings, Kazik Wieski, John O'Donnell, Hongyu Guo, Joel Craig, George Wheeler
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Title:
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Fall 2013 plant monitoring survey -- shoot height and flowering status of plants in permanent plots at GCE sampling sites 1-10
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Abstract:
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A quadrat survey was conducted in October 2013 to measure the species and size distribution of plants at 10 GCE LTER sampling sites. The quadrats were established as permanent plots at GCE sampling sites in October 2000 by placing wooden stakes at random locations across two nominal zones at each site, designated based on marsh structure (creekbank and high marsh). Several new plots were also added in October 2001, 2002, 2003, 2004, 2009, 2010 and 2012 to replace those lost due to catastrophic wrack disturbance or creek bank erosion, and the creek bank plots at site 3 were relocated in 2013 due to a shift in the creek location. The plots were visually surveyed and the species, shoot height, and flowering status was recorded individually for each shoot over 10 cm in height present in each plot. Observations from plots exhibiting signs of disturbance were noted in the data set, and an additional set of observations were recorded for the creek bank zone at site 3 prior to relocation (identified as Zone -1) for comparison with the relocated plots. Detailed disturbance data can be found in GCE data set PLT-GCEM-1801. This survey will be repeated annually to assess changes in plant distribution and biomass in relation to environmental changes documented by other GCE LTER monitoring efforts.
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DOI:
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10.6073/pasta/57891bcd993c3343ddf1c72772510c7c
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Key Words:
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flowering, marshes, monitoring, Panicum, permanent plots, plant communities, plant cover, plant ecology, plant growth, Plant Monitoring, plants, primary productivity, Scirpus, shoot height, Typha
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LTER Core Area:
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Primary Production
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Research Themes:
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GCE2 Q2 - Domain Patterns, GCE3 Area2 - Patterns within the Domain, Plant Ecology, Botany |
Study Period:
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13-Oct-2013 to 18-Oct-2013
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Study Sites:
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GCE1 -- Eulonia, Georgia, USA
GCE2 -- Four Mile Island, Georgia, USA
GCE3 -- North Sapelo, Sapelo Island, Georgia, USA
GCE4 -- Meridian, Georgia, USA
GCE5 -- Folly River, Georgia, USA
GCE6 -- Dean Creek, Sapelo Island, Georgia, USA
GCE7 -- Carrs Island, Georgia, USA
GCE8 -- Alligator Creek, Georgia, USA
GCE9 -- Rockdedundy Island, Georgia, USA
GCE10 -- Hunt Camp, Sapelo Island, Georgia, USA
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Species References:
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Juncus effusus,
Juncus roemerianus,
Panicum spp,
Scirpus americanus,
Scirpus olneyi,
Scirpus robustus,
Scirpus validus,
Spartina alterniflora,
Spartina cynosuroides,
Typha angustifolia,
Zizaniopsis miliacea |
Data References:
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PLT-GCEM-1403b (Biomass calculations based on this survey),
PLT-GCEM-1801 (Disturbance to permanent monitoring plots data set)
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Project References:
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End of year biomass |
Publications:
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Jiang, R., Liu, W. and Pennings, S.C. (in review). Global warming disrupts the trade-off between sexual and clonal reproduction in a salt marsh plant Spartina alterniflora.
Liu, W. and Pennings, S.C. Presentation: Allometric variation of the salt marsh grass Spartina alterniflora across space and time. 103rd Annual meeting of the Ecological Society of America, August 5-10, 2018, New Orleans.
Pennings, S.C. Presentation: Effects of Hurricanes Matthew and Irma on coastal wetlands in Georgia. 103rd Annual meeting of the Ecological Society of America, August 5-10, 2018, New Orleans.
Li, S. and Pennings, S.C. 2016. Disturbance in Georgia salt marshes: variation across space and time. Ecosphere. 7(10):e01487. (DOI: 10.1002/ecs2.1487)
Liu, W. and Pennings, S.C. 2019. Self-thinning and size-dependent flowering of the grass Spartina alterniflora across space and time. Functional Ecology. 33:1830-1841. (DOI: 10.1111/1365-2435.13384)
Liu, W. and Pennings, S.C. 2021. Variation in synchrony of production among species, sites and intertidal zones in coastal marshes. Ecology. (DOI: 10.1002/ECY.3278)
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Downloads:
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Data Table: PLT-GCEM-1403a (Main data table for data set PLT-GCEM-1403a, 3356 records)
Access: Public (released 18-Oct-2014)
Metadata: Text (ESA FLED),
XML (Ecological Metadata Language)
Data Formats: Spreadsheet (CSV) [342.53kb], Text File [293.33kb], MATLAB (GCE Toolbox) [100.82kb], MATLAB (Variables) [100.64kb], Text Report [419.66kb]
Column List:(hide)
Column |
Name |
Units |
Type |
Description |
1 |
Year |
YYYY |
integer |
Year of observation |
2 |
Month |
M |
integer |
Month of observation |
3 |
Day |
D |
integer |
Day of observation |
4 |
Site |
none |
integer |
GCE LTER sampling site |
5 |
Zone |
none |
integer |
Nominal marsh zone |
6 |
Plot |
none |
integer |
Permanent plot number |
7 |
Location |
none |
string |
Geographic location code in the GCE Metadata Database for the sampling plot |
8 |
Flag_Location |
none |
string |
QA/QC flags for Geographic location code in the GCE Metadata Database for the sampling plot (flagging criteria, where "x" is Location: manual) |
9 |
Location_Notes |
none |
string |
Notes on location assignments and geographic accuracy |
10 |
Longitude |
degrees |
floating-point |
Geographic longitude in decimal degrees |
11 |
Flag_Longitude |
none |
string |
QA/QC flags for Geographic longitude in decimal degrees (flagging criteria, where "x" is Longitude: x<-180="I", x>180="I", manual) |
12 |
Latitude |
degrees |
floating-point |
Geographic latitude in decimal degrees |
13 |
Flag_Latitude |
none |
string |
QA/QC flags for Geographic latitude in decimal degrees (flagging criteria, where "x" is Latitude: x<-90="I", x>90="I", manual) |
14 |
Quadrat_Area |
m^2 |
floating-point |
Areal measurement of the quadrat frame |
15 |
Species_Code |
none |
string |
Plant species code |
16 |
Flag_Species_Code |
none |
string |
QA/QC flags for Plant species code (flagging criteria, where "x" is Species_Code: flag_notinlist(x, "A1, A2, A3, A4, A5, A6, A7, A8, A9, A13")="Q", manual) |
17 |
Shoot_Height |
cm |
floating-point |
Height of the plant shoot above the substrate |
18 |
Flowering_Status |
none |
integer |
Presence or absence of inflorescence |
19 |
Flag_Flowering_Status |
none |
string |
QA/QC flags for Presence or absence of inflorescence (flagging criteria, where "x" is Flowering_Status: x<0="I", x>1="I", manual) |
20 |
Plot_Disturbance |
none |
integer |
Presence or absence of visible plot disturbance |
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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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Pennings, Steven C. 2014. Fall 2013 plant monitoring survey -- shoot height and flowering status of plants in permanent plots at GCE sampling sites 1-10. Georgia Coastal Ecosystems LTER Project, University of Georgia, Long Term Ecological Research Network. http://dx.doi.org/10.6073/pasta/57891bcd993c3343ddf1c72772510c7c
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