# 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/southcarolina/waccamaw2017loi11-11-1-2.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: Waccamaw11-11-1-2 # Location: North America>United States Of America>Georgia # Country: United States Of America # Northernmost_Latitude: 33.55564 # Southernmost_Latitude: 33.55564 # Easternmost_Longitude: -79.08943 # Westernmost_Longitude: -79.08943 # Elevation: #------------------ # Data_Collection # Collection_Name: Waccamaw11-11-1-2LOI # Earliest_Year: 2100 # Most_Recent_Year: -61 # Time_Unit: Cal. Year BP # Core_Length: 1.04 # Notes: Upper tidal freshwater, Richmond Island. Percent compression: 38.69; Original depth 168 #------------------ # Chronology_Information # Chronology: # Lab_ID depth_cm age_14C 14C error Material dated # Beta-328784 20-21 160 30 Bulk organic, picked free of roots # Beta-352949 49-50 1170 30 Bulk organic, picked free of roots # Beta-328785 65-66 1330 30 Bulk organic, picked free of roots # Beta-316995 93-94 1930 30 Bulk organic, picked free of roots # Beta-328786 103-104 2150 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, , , , ,N, Depths are lower depths ## LOI550 organic matter, sediment, , percent, ,paleolimnology,,loss on ignition,N, LOI at 550C ## DBD density, sediment, , gram per cubic centimeter, ,paleolimnology,,,N,dry bulk density # #---------------- # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing Values: # depth_cm LOI550 DBD 1 39.63963964 0.140952381 2 39.02439024 0.1025 3 36.45833333 0.192 4 42.97520661 0.121 5 39.33333333 0.15 6 35.06493506 0.102666667 7 40.47619048 0.07875 8 37.28813559 0.196666667 9 44.94382022 0.098888889 10 45.65217391 0.115 11 55 0.038095238 12 43.07692308 0.108333333 13 44.08602151 0.062 14 49.5049505 0.089777778 15 74.50980392 0.255 16 58.97435897 0.04875 17 46.83544304 0.056428571 18 46.42857143 0.093333333 19 13.3640553 0.206666667 20 6.233062331 0.3075 21 12.94117647 0.291428571 22 11.34751773 0.134285714 23 10.5 0.228571429 24 11.65413534 0.236444444 29 11.62790698 0.114666667 30 14.28571429 0.084444444 31 14.10788382 0.22952381 32 14.11290323 0.157460317 33 14.0969163 0.302666667 34 13.51351351 0.185 35 20.46783626 0.162857143 45 28.75 0.266666667 46 29.64824121 0.265333333 47 35.45454545 0.104761905 48 35.77235772 0.123 49 36.61202186 0.081333333 50 36.36363636 0.165 51 36.4 0.103896104 52 36.52173913 0.131428571 53 36.96969697 0.1375 54 35.1758794 0.132666667 55 32.60869565 0.153333333 56 33.33333333 0.204 57 31.63841808 0.196666667 58 33.33333333 0.144545455 59 33.71757925 0.1735 60 31.90184049 0.050153846 61 31.72413793 0.207142857 62 34.65346535 0.168333333 63 30.87248322 0.141904762 64 35.97122302 0.0695 65 33.76068376 0.26 66 34.88372093 0.143333333 67 38.97058824 0.155428571 74 28.31858407 0.161428571 75 28.16091954 0.193333333 76 25.46296296 0.135 77 23.1884058 0.1725 78 23.83419689 0.220571429 79 24.13793103 0.2175 80 32 0.142857143 81 23.22097378 0.254285714 82 24.71910112 0.178 83 20.54380665 0.137916667 84 25.13368984 0.207777778 85 19.82378855 0.172952381 86 21.12299465 0.311697836 87 20.38216561 0.130833333 88 19.6 0.208333333 89 25.92592593 0.27 96 28.68217054 0.122857143 97 21.08843537 0.168 98 25.53191489 0.141 99 22.85714286 0.466666667 100 23.42857143 0.583333333 101 29.45736434 0.43 102 22.22222222 0.468