# Vuoksjávrátje, Sweden 5100 Year Chironomid and Geochemical Data 
#----------------------------------------------------------------------- 
#                World Data Service for Paleoclimatology, Boulder 
#                                  and 
#                     NOAA Paleoclimatology Program 
#             National Centers for Environmental Information (NCEI)
#----------------------------------------------------------------------- 
# NOTE: Please cite original publication, online resource and date accessed when using this data.
# If there is no publication information, please cite Investigator, title, online resource and date accessed.
#
# Description/Documentation lines begin with #
# Data lines have no #
#
# Online_Resource: https://www.ncdc.noaa.gov/paleo/study/22253
#      Description: NOAA Landing Page
# Online_Resource: http://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/europe/sweden/vuoksjavratje2015chiron.txt
#      Description: NOAA location of the template
#
#
# Archive: Paleolimnology
#
# Dataset DOI: 
#
# Parameter_Keywords: age control, geochemistry, reconstruction, population abundance
#---------------------------------------
# Contribution_Date
#    Date: 2017-06-14
#---------------------------------------
# File_Last_Modified_Date
#    Date: 2017-06-14
#---------------------------------------
# Title
#    Study_Name: Vuoksjávrátje, Sweden 5100 Year Chironomid and Geochemical Data
#---------------------------------------
# Investigators
#      Investigators: Berntsson, A.; Jansson, K.N.; Kylander, M.E.; De Vleeschouwer, F.; Bertrand, S.
#---------------------------------------
# Description_Notes_and_Keywords
#        Description: main stratigraphic proxies provided
#         Provided Keywords: holocene, flooding, catchment erosion, chironomids
#---------------------------------------
# Publication
# Authors: Annika Berntsson, Krister N. Jansson, Malin E. Kylander, Francois De Vleeschouwer and Sebastien Bertrand
# Published_Date_or_Year: 2015
# Published_Title: Late Holocene high precipitation events recorded in lake sediments and catchment geomorphology, Lake Vuoksjávrátje, NW Sweden
# Journal_Name: Boreas
# Volume: 44
# Edition: 
# Issue: 4
# Pages: 676-692
# Report Number: 
# DOI: 10.1111/bor.12127
# Online_Resource: 
# Full_Citation: 
# Abstract: In this paper, we show the potential of combining multi-proxy analysis of lake sediments with catchment geomorphology to better understand palaeoenvironmental changes. Previous studies have suggested that alpine lakes in N Sweden may be highly sensitive to variations in catchment erosion and precipitation, and that this sensitivity may influence ecologically-based reconstructions of past temperature changes. Here, we have analysed lake sediments covering the last 5100 years from the alpine Lake Vuoksjávrátje in NW Sweden in order to identify different erosional regimes in the lake catchment, sediment sources and lake sedimentary processes, which ultimately affect the palaeoecological record. The measured proxies include elemental geochemistry from XRF core scanning, grain size, sediment accumulation rates, fraction of terrestrial organic carbon and geomorphological mapping, supported by previously published chironomid and total organic carbon data. From the integrated results we identify time intervals when increased intensity of precipitation altered sedimentation and lake catchment erosional processes. The most prominent event occurred c. 2900 cal. a BP and is interpreted to be the result of excessive precipitation, possibly related to the climatic shift towards cooler and wetter conditions referred to as the 2.8 ka event. 
#---------------------------------------
# Funding_Agency
#    Funding_Agency_Name: Andreefonden (Svenska Sällskapet för Antropologi och Geografi)
#    Grant: 
#---------------------------------------
# Funding_Agency
#    Funding_Agency_Name: Göran Gustafssons stiftelse för forskning i Lappland
#    Grant: 
#---------------------------------------
# Funding_Agency
#    Funding_Agency_Name: Mannerfeldts Fond för geografisk forskning
#    Grant: 
#---------------------------------------
# Funding_Agency
#    Funding_Agency_Name: De Geers Stiftelse för kvartärgeologisk forskning
#    Grant: 
#---------------------------------------
# Site Information
# Site_Name: Vuoksjávrátje
# Location: Europe>Northern Europe>Scandanavia>Sweden
# Country: Sweden
# Northernmost_Latitude: 66.25
# Southernmost_Latitude: 66.248
# Easternmost_Longitude: 15.721
# Westernmost_Longitude: 15.715
# Elevation: 850
#---------------------------------------
# Data_Collection
#   Collection_Name: Vuoksjavratje2015Chiron
#   First_Year: 5035
#   Last_Year: -57
#   Time_Unit: cal. yr BP
#   Core_Length: 
#   Notes: Vuok A surface core and Vuok C long core combined based on TOC curves
#---------------------------------------
# Chronology_Information 
# Chronology: 
# AMS radiocarbon dates obtained on terrestrial macrofossils from Lake Vuoksjávrátje core Vuok C. 
# Radiocarbon calibrations were done in CLAM 2.2 (Blaauw 2010) 
# based on the IntCal13 atmospheric radiocarbon calibration curve (Reimer et al. 2013). 
# Note that sediments between 185 and 207 were instantaneously deposited as the result of a flood event. 
# 
# Labcode 		Sample identification used by 14C laboratory 					References:						
# Depth_top		Depth top of sample interval (cm)					Blaauw, M. 2010: Methods and code for 'classical' age-modelling of radiocarbon sequences. Quaternary Geochronology 5, 512-518.						
# Depth_bottom		Depth bottom of sample interval (cm)					Reimer, P.J., Bard, E., Bayliss, A., Beck, J.W., Blackwell, P.G., Bronk Ramsey, C., Buck, C.E., Edwards, R.L., Friedrich, M., Grootes, P.M., Guilderson, T.P., Haflidason, H., Hajdas, I., Hatté, C., Heaton, T.J., Hoffmann, D.L., Hogg, A.G., Hughen, K.A., Kaiser, K.F., Kromer, B., Manning, S.W., Niu, M., Reimer, R.W., Richards, D.A., Scott, E.M., Southon, J.R., Turney, C.S.M., van der Plicht, J. 2013: IntCal13 and Marine13 radiocarbon age calibration curves, 0-50,000 years cal BP. Radiocarbon 55, 1869-1887.						
# Mat_dated 		Material Dated											
# DW		Dry Weight (mg) of material dated											
# 14C_raw		Conventional radiocarbon age, years before 1950 AD  											
# 14C_raw_err 		Standard error of radiocarbon age											
# Datemeth  		Dating method											
# Yr_BP		Years before 1950 AD, no need for calibration											
# Pb210_err		Standard error of lead age											
# Cal_yr_BP		Calibrated age, years before 1950 AD  											
# Prob		Probability (%)											
# Rejected 		Rejected sample  (yes/no)											
# Core		Core											
# 													
# Labcode	Depth_top	Depth_bottom	Mat_dated 	DW	14C_raw	14C_raw_err 	Datemeth  	Yr_BP	Pb210_err	Cal_yr_BP	Prob	Rejected 	Core
# 	0	0	sediment/water interface					-59				no	
# Pb-VA1	0	1	sediment					-54.936	2			no	Vuok A
# Pb-VA2	1	2	sediment					-41.367	2			no	Vuok A
# Pb-VA3	2	3	sediment					-21.964	3			no	Vuok A
# Pb-VA4	3	4	sediment					2.196	6			no	Vuok A
# Pb-VA5	4	5	sediment					37.063	11			no	Vuok A
# Pb-VA6	5	6	sediment					96.188	55			no	Vuok A
# Ua-38711	26	27	Salix leaf and unidentified  leaf fragments	11	1988	30	14C AMS			1880-1995	95	yes	Vuok C
# Ua-40166	26	27	fragments of leaves	1.4	2971	96	14C AMS			2884-2909	2	yes	Vuok C
# 										2919-3369 	93		
# Ua-40167	47	48	leaves, unidentified	6.4	455	32	14C AMS			475-538	95	no	Vuok C
# Ua-38712	62	63	Salix leaf and unidentified leaf fragments	9.9	687	30	14C AMS			562-592	29	no	Vuok C
# 										638-682 	65.8		
# Ua-38713	102	103	fragments of leaves	4.8	1052	30	14C AMS			925-1003 1028-1050	85.3	no	Vuok C
# 											9.6		
# Ua-38714	115	116	fragments of leaves	2.8	1423	36	14C AMS			1289-1379	95	no	Vuok C
# Ua-38715	140	140.5	twig, unidentified	30.4	2225	44	14C AMS			2146-2339	95	no	Vuok C
# Ua-38716	174.5	174.5	twig, unidentified	60.3	2536	30	14C AMS			2496-2596	41.6	no	Vuok C
# 										2612-2638	12.8		
# 										2684-2746	40.6		
# Ua-38717	193	193.5	piece of wood, unidentified	3.7	2711	44	14C AMS			2751-2883	93.7	no	Vuok C
# 										2911-2918	1.2		
# Ua-38718	219	220	fragments of leaves and Betula catkin scale, 	3.1	3031	50	14C AMS			3077-3096	3.6	no	Vuok C
# 										3106-3134	4.4		
# 										3136-3360	86.9		
# Ua-38719	245.5	246	fruit of Empetrum nigrum ssp hermaphroditum	5.5	4447	42	14C AMS			4880-4937	7.5	yes	Vuok C
# 										4955-5090	41.4		
# 										5098-5143 	9		
# 										5158-5286 	37		
# Ua-40168	249	250	fragments of leaves	1.2	3850	178	14C AMS			3835-4727	91.9	no	Vuok C
# 										4751-4818	3.1		
# Ua-40169	265	265.5	fragments of leaves	2	3648	67	14C AMS			3732-3743	0.6	no	Vuok C
# 										3773-3789	0.9		
# 										3826-4154	93.5		
# Ua-38720	290	290	seeds and small fragments of leaves	1.5	4499	36	14C AMS			4990-4990 	0.1	no	Vuok C
# 										5039-5303	94.8		
# 
#---------------------------------------
# Variables
# Data variables follow that are preceded by "##" in columns one and two.
# Variables list, one per line, shortname-tab-longname components (9 components: what, material, error, units, seasonality, archive, detail, method, C or N for Character or Numeric data)
## depth_cm	Depth,,,cm ,,,mid of sample depth interval,,N,Note that sediments between 185 and 207 were instantaneously deposited as the result of a flood event.
## age_calBP	Age,,,calendar years BP,,,mid of sample depth interval,AMS radiocarbon and Lead 210,N,Modelled ages - see Chronology
## Rheo_taxa	chironomids,chironomid assemblage,,percent,,paleolimnology,Rheophilic taxa (indicating fluvial erosion),,N,For classification used see original publication. 
## Terr_taxa	chironomids,chironomid assemblage,,percent,,paleolimnology,Terrestrial and semi-terrestrial taxa (indicating terrestrial erosion/sheetflow erosion),,N,For classification used see original publication. 
## Ero_taxa	chironomids,chironomid assemblage,,percent,,paleolimnology,Combination erosional indicators above,,N,For classification used see original publication. 
#------------------------
# Data
# Data lines follow (have no #)
# Data line format - tab-delimited text, variable short name as header
# Missing Value: 
depth_cm	age_calBP	Rheo_taxa	Terr_taxa	Ero_taxa
0.25	-57.3	0.0000	3.9604	3.9604
1.25	-39.6	0.0000	1.2346	1.2346
1.75	-30.6	0.9091	0.6061	1.5152
2.25	-21.5	3.1088	1.5544	4.6632
2.75	-12.35	3.1423	1.1091	4.2514
12.75	157.05	10.9453	7.9602	18.9055
20.5	260.8	10.5263	7.2368	17.7632
30.25	365.85	9.6296	18.5185	28.1481
41	461.1	2.5253	5.0505	7.5758
50.5	538.6	10.0775	17.0543	27.1318
61	616	8.7838	10.8108	19.5946
71	666.1	8.0357	7.1429	15.1786
81	714	2.2321	5.3571	7.5893
90.5	790	11.7647	4.4118	16.1765
100.5	936.5	16.0920	30.4598	46.5517
104.25	1016.05	0.0000	0.7547	0.7547
108.25	1117.15	2.2727	0.8117	3.0844
112.25	1233.2	0.0000	0.7905	0.7905
115.25	1328.85	2.5126	1.0050	3.5176
120.25	1501.45	2.7027	1.0135	3.7162
124.25	1645.8	3.2258	2.9326	6.1584
127.25	1754.2	1.4184	3.5461	4.9645
128.25	1789.9	19.2308	15.3846	34.6154
132.25	1928.5	3.6957	0.8696	4.5652
136.25	2056.2	6.2500	1.9531	8.2031
140.25	2167.65	2.0325	2.4390	4.4715
150.25	2365.1	3.5842	1.4337	5.0179
160.75	2498.1	14.5038	12.9771	27.4809
161.75	2509.45	3.4279	1.1820	4.6099
170.25	2614.2	2.0619	8.2474	10.3093
175.75	2702.2	19.5122	52.4390	71.9512
185.5	2901.6	8.9286	51.7857	60.7143
195.25	2901.6	0.0000	0.0000	0.0000
200.5	2901.6	0.0000	100.0	100.0
215.25	3111.65	3.9216	0.6536	4.5752
220.25	3246.05	1.3825	1.1521	2.5346
225.25	3379.9	3.5294	0.5882	4.1176
235.25	3632.5	2.2099	1.1050	3.3149
245.25	3843.6	7.6190	1.9048	9.5238
255.25	3993.6	2.2857	0.0000	2.2857
265.25	4163.45	2.4890	0.0000	2.4890
268.25	4241.5	1.6598	0.8299	2.4896
272.25	4367.8	1.3201	0.9901	2.3102
275.25	4476.6	2.2989	0.0000	2.2989
277.25	4554.6	1.7241	2.8736	4.5977
280.25	4678.65	0.7067	1.0601	1.7668
282.75	4787.1	1.0336	0.5168	1.5504
285.25	4898.75	0.0000	2.6667	2.6667
288.25	5035.6	0.8547	1.4957	2.3504