# Tennessee River, Kentucky 20 Year Freshwater Mussel Stable Isotope Data
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#                World Data Service for Paleoclimatology, Boulder 
#                                  and 
#                     NOAA Paleoclimatology Program 
#             National Centers for Environmental Information (NCEI)
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# 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. 
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# Online_Resource: https://www.ncdc.noaa.gov/paleo/study/32566 
#       Description: NOAA Landing Page
# Online_Resource: https://www.ncei.noaa.gov/pub/data/paleo/contributions_by_author/kukolich2021/kukolich2021ampl3.txt 
#       Description: NOAA location of the template
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# Original_Source_URL:  
#       Description:
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# Description/Documentation lines begin with #
# Data lines have no #
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# Data Type: Other Collections
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# Dataset DOI: 
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# Parameter_Keywords: others
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# Contribution_Date
#	Date: 2021-02-03
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# File_Last_Modified_Date
#	Date: 2021-02-03
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# Title
#	Study_Name: Tennessee River, Kentucky 20 Year Freshwater Mussel Stable Isotope Data
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# Investigators
#	Investigators: Kukolich, S.C.; Dettman, D.L.
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# Description_Notes_and_Keywords
#	Description: Carbon, nitrogen, and oxygen stable isotope data from unionid mussel shells collected in the Tennessee River near Paducah, Kentucky, plus river water and particulates stable isotope data.
#	Contemporaneously deposited periostracum and carbonate bound organic matter d15N of Amblema plicata specimen Ampl3 (2003-2006)
#	Provided Keywords: Unionid, bivalve, d13C, d15N, stable isotopes, seasonal, freshwater, periostracum, nacre
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# Publication 
#	Authors: Stephanie Kukolich, David Dettman
#	Published_Date_or_Year: 2021-02-14 
#	Published_Title: Reconstructing seasonal and baseline nitrogen isotope ratios in riverine particulate matter using freshwater mussel shells 
#	Journal_Name: Geochemistry, Geophysics, Geosystems
#	Volume: 
#	Edition: e2020GC009239
#	Issue: 
#	Pages:
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#	DOI: 10.1029/2020GC009239
#	Online_Resource: https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2020GC009239
#	Full_Citation: 
#	Abstract: We present a timeline of carbon, nitrogen, and oxygen stable isotope composition of ten unionid mussel shells across three species - Threeridge (Amblema plicata), Ebonyshell (Reginaia ebenus), and Pimpleback (Cyclonaias pustulosa) - collected live in 2011 from the Tennessee River near Paducah, Kentucky, USA. Inorganic aragonite d18O profiles were compared to a predicted shell d18O time series that was based on water temperature and isotopic composition. Shell growth was assumed to stop below ~12C. Profiles of inorganic d18O and d13C were then used to establish relationships between shell growth and calendar dates. Because shell growth is faster during warmer months and therefore easy to sample, assignment of calendar years to individual growth increments was validated using the interannual changes in the predicted minimum d18O value of summer shell. Mussel shell periostracum and carbonate-bound organic matter (CBOM) samples were then assigned calendar dates based on their location along shell growth axes and compared to measurements of d13C and d15N of suspended particulate organic matter (SPOM) - the mussels' food source - during shell growth (1997-2006). Mussel shell periostracum and CBOM faithfully recorded seasonal variability in d15N and d13C values of SPOM, after accounting for the time difference between SPOM consumption and deposition of shell organics due to the gradual turnover of mantle tissue. This demonstrates that unionid shell geochemistry could be used to document changes in riverine environment, runoff, and nutrient cycles across a spectrum of time scales, from historical to archaeological to Quaternary.
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# Funding_Agency 
#	Funding_Agency_Name: 
#	Grant: 
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# Site_Information 
#	Site_Name: Tennessee River near Paducah
#	Location: North America>United States Of America>Kentucky
#	Country: United States Of America
#	Northernmost_Latitude: 37.03
# 	Southernmost_Latitude: 37.03
# 	Easternmost_Longitude: -88.52
# 	Westernmost_Longitude: -88.52
# 	Elevation: 100
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# Data_Collection   
#	Collection_Name: Kukolich2021ampl3
#	Earliest_Year: 2003
#	Most_Recent_Year: 2006
#	Time_Unit:  Year CE
#	Core_Length: 
#	Notes: 
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# Chronology_Information
#	Chronology: 
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# Variables 
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# 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) 
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## SampleID	Sample Identification,bivalve,,dimensionless,,Other collections,,,C,
## d15Nperi	delta 15N,bivalve; tissue,,per mil AIR,,Other collections,,isotope ratio mass spectrometry,N,contemporaneous with corresponding CBOM sample
## d15Nperi_err	delta 15N,bivalve; tissue,one standard deviation,per mil AIR,,Other collections,,isotope ratio mass spectrometry,N,
## d15NCBOM	delta 15N,bivalve; tissue,,per mil AIR,,Other collections,,isotope ratio mass spectrometry,N,contemporaneous with corresponding periostracum sample
## d15NCBOM_err	delta 15N,bivalve; tissue,one standard deviation,per mil AIR,,Other collections,,isotope ratio mass spectrometry,N,
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# Data:
# Data lines follow (have no #)
# Data line format - tab-delimited text, variable short name as header
# Missing Values:  
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Sample ID	d15Nperi	d15Nperi_err	d15NCBOM	d15NCBOM_err
Ampl3P-1	10.7	0.29	-999	-999
Ampl3P-2	-999	-999	10.8	0.29
Ampl3P-3	-999	-999	10.8	0.29
Ampl3P-4	11.4	0.29	13.4	0.29
Ampl3P-5	13.3	0.29	-999	0.29
Ampl3P-6	13.8	0.15	17.2	0.29
Ampl3P-7	7.1	0.15	9.6	0.29
Ampl3P-8	8.1	0.15	-999	0.29
Ampl3P-9	9.5	0.15	-999	0.29
Ampl3P-10	11.6	0.15	12.4	0.29
Ampl3P-11	8.9	0.15	9.3	0.29
Ampl3P-12	9.5	0.15	10.6	0.29
Ampl3P-13	11	0.15	11.5	0.29
Ampl3P-14	8.3	0.15	8.5	0.20