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GCE-LTER Data Set Summary
Accession:
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PLT-GCED-2207
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Research Theme:
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Plant Ecology (Directed Study)
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Contributors:
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Steven C. Pennings, Hongyu Guo
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Title:
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Critical slowing down: vegetation height, cover and composition assess resilience of tidal fresh, brackish and salt marshes following experimental disturbance at twelve sites across the estuarine landscape
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Abstract:
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We investigated the relative recovery rates of vegetation cover, vegetation height and community composition over a period of >10 years after experimental disturbance in 12 tidal marshes (two oligohaline, three mesohaline and seven polyhaline sites) across the estuarine landscape on the coast of Georgia, USA. Vegetation was removed from three by three meter plots (four per site) with herbicide in 2006 followed by repeated clipping through 2009. Vegetation height, cover and composition was assessed in experimental and control plots (4 of each per site) from 2010 to 2020. The goal of the study was to assess how quickly the sites recovered from disturbance, how this varied in different types of marshes, and how results varied depending on whether recovery was assessed by vegetation height, cover or composition.
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DOI:
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10.6073/pasta/6df40a30859a7293db9a76fc4fff8cec
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Key Words:
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Altamaha Sound, disturbance, Doboy Sound, marshes, plant cover, plant ecology, plants, recovery, Sapelo Sound, succession, yearly
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LTER Core Area:
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Population Studies
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Research Themes:
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Plant Ecology |
Study Period:
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01-Oct-2010 to 01-Nov-2020
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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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Publications:
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Wang, J., Guo, H., Alber, M. and Pennings, S.C. 2024. Variance reflects resilience to disturbance along a stress gradient: experimental evidence from coastal marshes. Ecology. 2024:e4241. (DOI: https://doi.org/10.1002/ecy.4241)
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Downloads:
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Data Table: PLT-GCED-2207_salinity (Soil porewater salinity and flooding intensity of each study site, 132 records)
Access: Public (released 20-Jul-2022)
Metadata: Text (ESA FLED),
XML (Ecological Metadata Language)
Data Formats: Spreadsheet (CSV) [6.67kb], Text File [5.91kb], MATLAB (GCE Toolbox) [38.23kb], MATLAB (Variables) [56.84kb], Text Report [80.43kb]
Column List:(display)
Column |
Name |
Units |
Type |
Description |
1 |
Date |
YYYY-MM |
string |
Date of measurement |
2 |
Site |
None |
string |
Name of site |
3 |
Latitude |
Degree |
floating-point |
Latitude of site |
4 |
Longitude |
Degree |
floating-point |
Longitude of site |
5 |
Soil_porewater_salinity |
PSU |
floating-point |
Average soil porewater salinity across all plots |
6 |
Flooding |
none |
floating-point |
Proportion of time marsh was flooded based on tidal data and marsh elevation |
Data Table: PLT-GCED-2207_vegetation (Vegetation recovery data, 1104 records)
Access: Public (released 20-Jul-2022)
Metadata: Text (ESA FLED),
XML (Ecological Metadata Language)
Data Formats: Spreadsheet (CSV) [120.55kb], Text File [115.94kb], MATLAB (GCE Toolbox) [47.52kb], MATLAB (Variables) [66.86kb], Text Report [200.20kb]
Column List:(display)
Column |
Name |
Units |
Type |
Description |
1 |
Date |
YYYY-MM |
string |
Date data collected |
2 |
Site |
none |
string |
Name of site |
3 |
Latitude |
degree |
floating-point |
Latitude of site |
4 |
Longitude |
degree |
floating-point |
Logitude of site |
5 |
Treatment |
none |
string |
Experimental treatment |
6 |
Plot |
none |
integer |
Plot number |
7 |
Sub-plot |
none |
integer |
Sub-plot number |
8 |
Vegetation_Cover |
percent |
integer |
Total percentage cover of vegetation |
9 |
Vegetation_Height |
cm |
floating-point |
Average height of vegetation |
10 |
Zizaniopsis_miliacea |
percent |
integer |
Percentage of Zizaniopsis miliacea |
11 |
Polygonum_hydropiperoides |
percent |
integer |
Percentage of Polygonum hydropiperoides |
12 |
Pontederia_cordata |
percent |
integer |
Percentage of Pontederia cordata |
13 |
Cicuta_maculata |
percent |
integer |
Percentage of Cicuta maculata |
14 |
Juncus_roemerianus |
percent |
integer |
Percentage of Juncus roemerianus |
15 |
Spartina_cynosuroides |
percent |
integer |
Percentage of Spartina cynosuroides |
16 |
Schoenoplectus_americanus |
percent |
integer |
Percentage of Schoenoplectus americanus |
17 |
Schoenoplectus_robustus |
percent |
integer |
Percentage of Schoenoplectus robustus |
18 |
Limonium_carolinianum |
percent |
integer |
Percentage of Limonium carolinianum |
19 |
Spartina_alterniflora |
percent |
integer |
Percentage of Spartina alterniflora |
20 |
Sarcocornia_sp |
percent |
integer |
Percentage of Sarcocornia spp. |
21 |
Batis_maritima |
percent |
integer |
Percentage of Batis maritima |
22 |
Aster_sp |
percent |
integer |
Percentage of Aster spp. |
23 |
Eleocharis_palustris |
percent |
integer |
Percentage of Eleocharis palustris |
24 |
Juncus_effusus |
percent |
integer |
Percentage of Juncus effusus |
25 |
Ludwigia_repens |
percent |
integer |
Percentage of Ludwigia repens |
26 |
Peltandra_virginica |
percent |
integer |
Percentage of Peltandra virginica |
27 |
Sagittaria_lancifolia |
percent |
integer |
Percentage of Sagittaria lancifolia |
28 |
Rumex_verticillatus |
percent |
integer |
Percentage of Rumex verticillatus |
29 |
Typha_angustifolia |
percent |
integer |
Percentage of Typha angustifolia |
30 |
Panicum_virgatum |
percent |
integer |
Percentage of Panicum virgatum |
31 |
Solidago_sempervirens |
percent |
integer |
Percentage of Solidago sempervirens |
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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. 2022. Critical slowing down: vegetation height, cover and composition assess resilience of tidal fresh, brackish and salt marshes following experimental disturbance at twelve sites across the estuarine landscape. Georgia Coastal Ecosystems LTER Project, University of Georgia, Long Term Ecological Research Network. http://dx.doi.org/10.6073/pasta/6df40a30859a7293db9a76fc4fff8cec
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