# Waccamaw/Savannah River Wetlands Late Holocene Multiproxy Sediment Data #----------------------------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program # National Centers for Environmental Information (NCEI) #----------------------------------------------------------------------- # Template Version 3.0 # Encoding: UTF-8 # NOTE: Please cite Publication, and Online_Resource and date accessed when using these data. # If there is no publication information, please cite Investigators, Title, and Online_Resource and date accessed. # # Online_Resource: https://www.ncdc.noaa.gov/paleo/study/26690 # Description: NOAA Landing Page # Online_Resource: https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/usa/georgia/savannah2017macropct12-12-10-2.txt # Description: NOAA location of the template # # Original_Source_URL: # Description: # # Description/Documentation lines begin with # # Data lines have no # # # Archive: Paleolimnology # # Dataset DOI: # # Parameter_Keywords: geochemistry, physical properties, population abundance #-------------------- # Contribution_Date # Date: 2019-05-01 #-------------------- # File_Last_Modified_Date # Date: 2019-05-01 #-------------------- # Title # Study_Name: Waccamaw/Savannah River Wetlands Late Holocene Multiproxy Sediment Data #-------------------- # Investigators # Investigators: Jones, M.C.; Bernhardt, C.E.; Krauss, K.W.; Noe, G.B. #-------------------- # Description_Notes_and_Keywords # Description: Multiproxy (pollen, plant macrofossils, sediment accretion, and carbon accumulation) data from river wetlands sediment cores. # Cores are from 2 transects ranging from tidal freshwater forested wetlands (TFFW) to oligohaline marsh, along the Waccamaw and Savannah # Rivers (South Carolina and Georgia, USA) for the late Holocene (~6,000 - 1,500 years BP). #-------------------- # Publication # Authors: Miriam C. Jones, Christopher E. Bernhardt, Ken W. Krauss, Gregory B. Noe # Published_Date_or_Year: 2017-12-01 # Published_Title: The Impact of Late Holocene Land Use Change, Climate Variability, and Sea Level Rise on Carbon Storage in Tidal Freshwater Wetlands on the Southeastern United States Coastal Plain # Journal_Name: Journal of Geophysical Research Biogesciences # Volume: 122 # Edition: # Issue: 12 # Pages: 3126-3141 # Report_Number: # DOI: 10.1002/2017JG004015 # Online_Resource: https://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/2017JG004015 # Full_Citation: # Abstract: This study examines Holocene impacts of changes in climate, land use, and sea level rise (SLR) on sediment accretion, carbon accumulation rates (CAR), and vegetation along a transect of tidal freshwater forested wetlands (TFFW) to oligohaline marsh along the Waccamaw River, South Carolina (four sites) and along the Savannah River, Georgia (four sites). We use pollen, plant macrofossils, accretion, and CAR from cores, spanning the last 1,500-6,000 years to test the hypothesis that TFFW have remained stable throughout the late Holocene and that marshes transitioned from TFFW during elevated SLR during the Medieval Climate Anomaly, with further transformation resulting from colonial land use change. Results show low and stable accretion and CAR through much of the Holocene, despite moderate changes associated with Holocene paleoclimate. In all records, the largest observed change occurred within the last ~400 years, driven by colonial land clearance, shifting terrigenous sediment into riparian wetlands, resulting in order-of-magnitude increases in accretion and C accumulation. The oligohaline marshes transitioned from TFFW ~300-500 years ago, coincident with colonial land clearance. Postcolonial decreases in CAR and accretion occur because of watershed reforestation over the last century. All sites show evidence of recent (decades to century) swamp forest decline due to increasing salinity and tidal inundation from SLR. This study suggests that allochthonous sediment input during colonialization helped maintain TFFW but that current SLR rates are too high for TFFW to persist, although higher accretion rates in oligohaline marshes increase the resilience of tidal wetlands as they transition from TFFW to marsh. #------------------ # Funding_Agency # Funding_Agency_Name: United States Geological Survey # Grant: Climate and Land Use Change R&D #------------------ # Site_Information # Site_Name: Savannah12-12-10-2 # Location: North America>United States Of America>Georgia # Country: United States Of America # Northernmost_Latitude: 32.18 # Southernmost_Latitude: 32.18 # Easternmost_Longitude: -81.14 # Westernmost_Longitude: -81.14 # Elevation: #------------------ # Data_Collection # Collection_Name: Savannah12-12-10-2macropct # Earliest_Year: 4200 # Most_Recent_Year: -61 # Time_Unit: Cal. Year BP # Core_Length: 2.99 # Notes: Heavily Salt-impacted TFFW (tidal freshwater forested wetlands) #------------------ # Chronology_Information # Chronology: # Lab_ID depth_cm age_14C 14C error Material dated # Beta-381820 60-61 80 30 Bulk organic, picked free of roots # Beta-357066 76-77 130 30 Bulk organic, picked free of roots # Beta-381821 112-113 1060 30 Bulk organic, picked free of roots # Beta-357067 159-160 1900 30 Bulk organic, picked free of roots # Beta-357068 297-298 3820 30 Bulk organic, picked free of roots # #---------------- # Variables # # Data variables follow are preceded by "##" in columns one and two. # Data line variables format: one per line, shortname-tab-variable components (what, material, error, units, seasonality, data type,detail, method, C or N for Character or Numeric data, free text) # ## depth_cm depth, , , cm, , , , ,C, Depths are lower depths ## Herbaceous Detritus Herbaceous Detritus, sediment, , percent, ,Plant macrofossils,,,N, relative abundance listed as a percent of total of the organic fraction of the sediment ## Woody detritus Woody detritus, sediment, , percent, ,Plant macrofossils,,,N, relative abundance listed as a percent of total of the organic fraction of the sediment ## Undiff detritus Undiff detritus, sediment, , percent, ,Plant macrofossils,,,N, relative abundance listed as a percent of total of the organic fraction of the sediment ## Bark Bark, sediment, , percent, ,Plant macrofossils,,,N, relative abundance listed as a percent of total of the organic fraction of the sediment ## wood wood, sediment, , percent, ,Plant macrofossils,,,N, relative abundance listed as a percent of total of the organic fraction of the sediment ## Vascular leaf fragments Vascular leaf fragments, sediment, , percent, ,Plant macrofossils,,,N, relative abundance listed as a percent of total of the organic fraction of the sediment ## Total wood Total wood, sediment, , percent, ,Plant macrofossils,,,N, relative abundance listed as a percent of total of the organic fraction of the sediment # #---------------- # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing Values: # Depth_cm Herbaceous Detritus Woody detritus Undiff detritus Bark wood Vascular leaf fragments Total wood 5 0 0 100 0 0 0 0 10 95 5 0 0 0 0 5 15 90 9 0 1 0 0 10 20 100 0 0 0 0 0 0 25 100 0 0 0 0 0 0 30 100 0 0 0 0 0 0 40 90 10 0 0 0 0 10 45 85 15 0 0 0 0 15 50 95 4 0 0 0 1 5 55 92 4 0 0 0 4 8 60 85 5 0 0 0 10 15 70 100 0 0 0 0 0 0 76 85 10 0 5 0 0 15 77 40 20 0 0 5 35 60 78 90 10 0 0 0 0 10 80 80 20 0 0 0 0 20 85 85 5 0 0 0 10 15 90 95 5 0 0 0 0 5 100 100 0 0 0 0 0 0 105 100 0 0 0 0 0 0 110 100 0 0 0 0 0 0 115 100 0 0 0 0 0 0 120 100 0 0 0 0 0 0 125 100 0 0 0 0 0 0 130 100 0 0 0 0 0 0 140 100 0 0 0 0 0 0 142 0 0 100 0 0 0 0 144 100 0 0 0 0 0 0 150 70 30 0 0 0 0 30 155 20 80 0 0 0 0 80 159 40 45 0 0 15 0 60 160 15 65 0 0 20 0 85 161 5 55 0 0 40 0 95 162 10 70 0 0 20 0 90 165 5 95 0 0 0 0 95 170 35 65 0 0 0 0 65 175 85 15 0 0 0 0 15 180 65 35 0 0 0 0 35 190 100 0 0 0 0 0 0 195 35 60 0 0 0 5 65 205 65 35 0 0 0 0 35 210 25 75 0 0 0 0 75 215 10 90 0 0 0 0 90 220 10 90 0 0 0 0 90 225 35 65 0 0 0 0 65 230 35 65 0 0 0 0 65 235 65 35 0 0 0 0 35 240 50 50 0 0 0 0 50 245 25 75 0 0 0 0 75 250 35 30 0 35 0 0 65 255 75 25 0 0 0 0 25 260 80 20 0 0 0 0 20 265 75 25 0 0 0 0 25 270 5 95 0 0 0 0 95 275 5 95 0 0 0 0 95 279 10 65 0 0 25 0 90 280 10 90 0 0 0 0 90 285 0 80 0 0 20 0 100 290 5 95 0 0 0 0 95 296 35 50 0 0 0 15 65 298 25 50 0 0 0 25 75 299 25 50 0 0 0 25 75