Long-term landscape changes in a subalpine spruce-fir forest in central Utah, USA

Forest Ecosystems

Table 1 Summary of age-depth relationships for Emerald Lake, Utah

Depth (m)^a	Core ID	¹⁴C Age ± 1σ^b	2σ age range (cal yr BP)^c	Relative area under distribution	Assigned ²¹⁰Pb age (Year AD)^d	Assigned age (cal yr BP)	Material dated	Lab ID Number
0.00	EL07A				2007 ± 0^e	−57	core top	n/a
0.02	EL07A				2004 ± 2	−54	gyttja	EL07A0102
0.04	EL07A				1997 ± 2	−47	gyttja	EL07A0304
0.06	EL07A				1987 ± 2	−37	gyttja	EL07A0506
0.08	EL07A				1977 ± 3	−27	gyttja	EL07A0708
0.10	EL07A				1965 ± 4	−15	gyttja	EL07A0910
0.12	EL07A				1950 ± 5	0	gyttja	EL07A1112
0.14	EL07A				1933 ± 5	17	gyttja	EL07A1314
0.16	EL07A				1919 ± 9	31	gyttja	EL07A1516
0.18	EL07A				1908 ± 9	43	gyttja	EL07A1718
0.20	EL07A				1900 ± 9	50	gyttja	EL07A1920
0.22	EL07A				1888 ± 8	62	gyttja	EL07A2324
0.24	EL07A				1857 ± 7	93	gyttja	EL07A2123
0.38	EL07A	735 ± 15	666-688	1.000		677	macro	4781
0.67	EL07A	1280 ± 15	1223-1275	0.594		1249	macro	4783
0.81^f	EL07C	2451 ± 27	2362-2542	0.547		2452	macro	4785
1.20	EL07C	1617 ± 26	1474-1562	0.620		1518	macro	4787
1.54	EL07C	2958 ± 24	3057-3209	0.973		3133	macro	4789
1.99	EL07C	3843 ± 27	4153-4300	0.787		4227	macro	4791
2.44	EL07C	5381 ± 28	6174-6281	0.804		6228	macro	4793
2.84	EL07C	8483 ± 26	9471-9530	1.000		9501	macro	4795

^adepth below the sediment-water interface
^bAMS ¹⁴C age determinations from Center for Applied Isotope Studies (CAIS) at the University of Georgia
^c ¹⁴C ages calibrated to calendar years before present (Cal yr BP) with INTCAL09 in Calib 7.0 (Reimer et al. 2013)
^d ²¹⁰Pb/¹³⁷Cs ages from USGS Denver determined by Constant Rate of Supply (Appleby et al., 1979) adjusted for 1963 AD ¹³⁷Cs peak
^eCore top sample assigned to year of core retrieval
^fdate rejected due to reversal