Citation:

PANGAEA.931918

Name: Diatom assemblages excluding Chaetoceros resting spores of sediment core JPC43 in Neny Fjord, Antarctic Peninsula
Published: 2021-05-28
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Antarctic Peninsula; Climate change; diatoms; Holocene; Meltwater; Palaeoceanography; sea-ice; tidewater outlet glaciers

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Abstract:

Diatom abundance and assemblage data are presented for JPC43 - a ~12 m marine sediment core recovered from 576 m water depth in Neny Fjord, Marguerite Bay, Antarctic Peninsula (68.2571°S, 66.9617°W). The core was collected aboard the RVIB Nathanial B Palmer in 2002 during the NBP0201 scientific cruise (PI: Prof J B Anderson) to determine the timing of deglaciation in the fjords of the Antarctic Peninsula. The core record spans the Holocene with samples dated using an age model based on 5 reliable radiocarbon dates. Relative abundance of diatom taxa are based on counts (mean=363.1 valves) excluding Chaetoceros resting spores (CRS) - 'CRS-free counts' (n=66). The relevant methods are described and referenced in the associated publication (Allen et al. 2010).

Keyword(s):

Antarctic Peninsula; Climate change; diatoms; Holocene; Meltwater; Palaeoceanography; sea-ice; tidewater outlet glaciers

Related to:

Allen, Claire Susannah; Oakes-Fretwell, Lisa; Anderson, John B; Hodgson, Dominic A (2010): A record of Holocene glacial and oceanographic variability in Neny Fjord, Antarctic Peninsula. The Holocene, 20(4), 551-564, https://doi.org/10.1177/0959683609356581

Funding:

National Science Foundation (NSF), grant/award no. OPP-9909734 : LGM Late Pleistocene to Holocene Glacial History of West Antarctica

Coverage:

Latitude: -68.257100 * Longitude: -66.961700

Date/Time Start: 2002-02-19T00:00:00 * Date/Time End: 2002-02-20T00:00:00

Minimum DEPTH, sediment/rock: 0.00 m * Maximum DEPTH, sediment/rock: 11.80 m

Event(s):

NBP0201_JPC43 (JPC43) * Latitude: -68.257100 * Longitude: -66.961700 * Date/Time Start: 2002-02-19T00:00:00 * Date/Time End: 2002-02-20T00:00:00 * Elevation: -576.0 m * Location: Marguerite Bay * Campaign: * Basis: Nathaniel B. Palmer * Method/Device: Jumbo Piston Core (JPC)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	DEPTH, sediment/rock	Depth sed	m	Allen, Claire Susannah		Geocode
2	Actinocyclus actinochilus	A. actinochilus	%	Allen, Claire Susannah	Counting, diatoms
3	Cocconeis spp.	Cocconeis spp.	%	Allen, Claire Susannah	Counting, diatoms
4	Eucampia antarctica	E. antarctica	%	Allen, Claire Susannah	Counting, diatoms
5	Fragilariopsis curta and Fragilariopsis cylindrus	F. curta+F. cylindrus	%	Allen, Claire Susannah	Counting, diatoms
6	Fragilariopsis kerguelensis	F. kerguelensis	%	Allen, Claire Susannah	Counting, diatoms
7	Fragilariopsis obliquecostata	F. obliquecostata	%	Allen, Claire Susannah	Counting, diatoms
8	Fragilariopsis ritscheri	F. ritscheri	%	Allen, Claire Susannah	Counting, diatoms
9	Fragilariopsis sublinearis	F. sublinearis	%	Allen, Claire Susannah	Counting, diatoms
10	Fragilariopsis vanheurckii	F. vanheurckii	%	Allen, Claire Susannah	Counting, diatoms
11	Navicula sp.	Navicula sp.	%	Allen, Claire Susannah	Counting, diatoms
12	Odontella weissflogii	O. weissflogii	%	Allen, Claire Susannah	Counting, diatoms
13	Fragilariopsis spp.	Fragilariopsis spp.	%	Allen, Claire Susannah	Counting, diatoms
14	Porosira spp.	Porosira spp.	%	Allen, Claire Susannah	Counting, diatoms
15	Proboscia spp.	Proboscia spp.	%	Allen, Claire Susannah	Counting, diatoms
16	Pseudo-nitzschia spp.	Pseudo-nitzschia spp.	%	Allen, Claire Susannah	Counting, diatoms
17	Rhizosolenia spp.	Rhizosolenia spp.	%	Allen, Claire Susannah	Counting, diatoms
18	Thalassiosira antarctica, resting spores	T. antarctica rs	%	Allen, Claire Susannah	Counting, diatoms	cold water form
19	Thalassiosira antarctica, resting spores	T. antarctica rs	%	Allen, Claire Susannah	Counting, diatoms	warm water form
20	Thalassiosira gracilis var. expecta	T. gracilis var. expecta	%	Allen, Claire Susannah	Counting, diatoms
21	Thalassiosira gracilis var. nominate	T. gracilis var. nominate	%	Allen, Claire Susannah	Counting, diatoms
22	Thalassiosira lentiginosa	T. lentiginosa	%	Allen, Claire Susannah	Counting, diatoms
23	Thalassiosira spp.	Thalassiosira spp.	%	Allen, Claire Susannah	Counting, diatoms
24	Thalassiothrix group	Thalassiothrix gr	%	Allen, Claire Susannah	Counting, diatoms	Thalassiothrix spp., Trichotoxon spp. and Thalassionema spp.
25	Diatoms, other	Diatom oth	%	Allen, Claire Susannah	Counting, diatoms

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

1584 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 Depth sed [m]	2 A. actinochilus [%]	3 Cocconeis spp. [%]	4 E. antarctica [%]	5 F. curta+F. cylindrus [%]	6 F. kerguelensis [%]	7 F. obliquecostata [%]	8 F. ritscheri [%]	9 F. sublinearis [%]	10 F. vanheurckii [%]	11 Navicula sp. [%]	12 O. weissflogii [%]	13 Fragilariopsis spp. [%]	14 Porosira spp. [%]	15 Proboscia spp. [%]	16 Pseudo-nitzschia spp. [%]	17 Rhizosolenia spp. [%]	18 T. antarctica rs [%] (cold water form)	19 T. antarctica rs [%] (warm water form)	20 T. gracilis var. expecta [%]	21 T. gracilis var. nominate [%]	22 T. lentiginosa [%]	23 Thalassiosira spp. [%]	24 Thalassiothrix gr [%] (Thalassiothrix spp., Trichoto...)	25 Diatom oth [%]
0.00	2.87	0.88	0.88	14.55	1.32	3.75	2.21	2.87	1.10	1.98	0.66	0.66	0.22	13.89	0.22	1.32	19.40	16.98	1.76	5.07	0.00	2.21	0.33	4.85
0.05	1.48	1.97	0.99	24.38	0.74	0.25	1.23	2.59	2.71	1.23	0.49	8.13	0.99	3.94	1.48	1.97	6.16	16.26	2.96	4.68	1.23	3.20	1.11	9.85
0.10	1.75	1.50	1.00	22.75	1.25	2.75	4.25	3.50	3.00	1.50	0.25	0.25	0.25	8.25	0.50	0.50	18.75	19.25	0.25	2.50	0.00	2.00	0.25	3.75
0.20	0.00	0.00	1.18	20.00	4.71	1.18	4.71	3.53	9.41	0.00	0.00	1.18	1.18	11.76	0.00	1.18	9.41	14.12	1.18	2.35	0.00	5.88	0.00	7.06
0.30	1.43	1.43	1.43	25.81	2.15	3.58	3.58	1.43	1.43	2.15	0.00	1.43	0.72	7.89	0.72	2.87	12.19	17.20	0.72	2.87	0.00	0.00	0.36	8.60
0.40	0.99	0.00	0.00	32.75	3.97	2.98	4.47	5.46	2.98	3.97	0.50	3.97	0.00	7.94	1.99	1.49	7.44	5.46	0.50	4.96	0.00	2.48	0.25	5.46
0.50	0.00	0.33	1.00	28.00	2.67	8.67	3.67	3.67	3.33	2.67	0.00	1.67	0.00	8.33	2.00	2.00	8.33	10.33	1.00	4.33	0.00	1.00	0.33	6.67
0.60	0.56	0.00	0.56	31.75	0.00	2.23	4.46	2.79	1.11	2.79	0.00	0.56	1.11	15.60	2.23	3.90	9.47	6.69	4.46	2.79	0.00	1.11	0.28	5.57
0.80	0.00	0.93	0.47	44.65	0.47	2.33	4.19	2.79	3.72	3.72	0.93	0.47	0.00	5.12	1.86	1.40	10.23	5.58	0.47	6.98	0.00	0.47	0.00	3.26
1.00	0.00	1.87	0.93	48.60	0.00	2.80	3.74	3.74	1.87	1.87	0.93	0.00	0.93	8.41	0.93	2.80	7.48	4.67	0.00	0.00	0.00	2.80	0.00	5.61
1.20	0.00	0.43	0.43	51.61	0.00	2.15	2.58	3.87	3.01	2.58	0.43	0.86	0.86	3.01	2.58	2.58	7.31	6.45	1.29	2.58	0.00	2.15	0.65	2.58
1.40	0.22	0.66	1.10	34.18	0.88	4.41	4.19	3.53	3.31	3.53	0.00	1.32	0.22	16.32	3.31	1.10	6.39	6.39	0.66	2.21	0.00	2.65	0.55	2.87
1.60	0.00	0.00	0.40	47.11	0.00	4.79	5.19	2.00	2.00	3.59	0.00	1.20	0.00	7.19	7.98	1.20	3.99	5.99	1.60	0.40	0.00	4.79	0.20	0.40
1.80	0.00	0.00	0.00	40.11	0.57	3.44	5.73	1.15	1.15	2.29	0.00	1.15	0.00	14.33	1.72	1.15	8.60	12.61	1.72	1.15	0.00	0.57	0.86	1.72
2.00	0.24	0.98	0.24	34.76	0.73	2.45	1.71	1.47	3.92	2.69	0.24	0.98	0.98	6.61	1.71	1.71	10.04	8.57	2.69	9.30	0.00	2.45	0.37	5.14
2.20	0.00	1.61	1.15	32.30	0.23	1.85	3.92	2.31	6.69	6.92	0.23	1.15	0.23	9.23	0.92	0.92	9.69	8.07	0.92	4.84	0.46	1.38	0.58	4.38
2.40	0.69	0.46	1.16	30.06	1.16	2.54	3.47	1.39	2.77	3.01	0.00	1.39	0.23	7.40	1.62	2.54	16.42	12.02	0.69	2.77	0.00	5.09	0.58	2.54
2.60	0.23	1.40	0.23	35.16	2.10	3.03	1.16	3.49	4.42	3.49	0.00	0.47	0.00	12.11	0.70	1.63	11.18	7.92	1.16	2.79	0.00	3.73	0.81	2.79
2.80	0.24	0.00	1.18	38.02	3.07	3.78	3.07	1.42	4.96	2.36	0.24	0.94	0.00	16.06	2.60	0.24	9.45	4.96	0.47	1.18	0.00	2.60	1.06	2.13
3.00	0.24	0.00	0.73	27.60	2.42	3.15	1.45	2.91	3.39	1.69	0.00	0.24	0.00	22.03	2.42	0.73	9.69	8.72	0.24	6.05	0.24	1.69	0.73	3.63
3.20	0.25	0.00	0.00	36.11	0.75	2.74	1.00	0.25	3.74	3.99	0.25	0.75	0.25	3.49	1.00	0.25	19.18	12.20	1.99	5.23	0.00	3.24	0.37	2.99
3.40	0.00	0.75	1.24	33.58	0.75	13.18	8.46	3.23	2.74	0.75	0.00	0.25	0.00	4.23	0.75	0.25	11.69	11.94	0.25	1.24	0.00	1.74	0.25	2.74
3.60	0.00	0.40	0.20	36.08	1.19	6.14	1.59	1.19	2.97	3.77	0.00	0.79	0.20	6.94	0.00	0.59	15.86	11.69	0.20	3.17	0.00	1.78	0.69	4.56
3.80	0.22	1.11	0.67	25.97	0.67	2.22	1.55	3.77	1.78	1.78	0.44	1.33	0.44	7.77	0.89	6.44	13.32	20.64	1.55	2.00	0.00	1.33	0.55	3.55
4.00	0.49	1.23	0.00	34.07	0.74	3.95	0.00	1.48	2.72	5.93	0.00	1.98	0.00	6.91	0.00	0.74	16.79	10.86	0.25	2.96	0.00	4.20	1.48	3.21
4.10	0.43	0.87	0.87	15.42	4.56	2.39	1.74	0.87	1.30	1.30	0.65	0.43	0.22	8.03	0.65	1.09	26.49	21.28	0.00	2.82	0.43	2.17	0.76	5.21
4.20	0.00	0.23	0.69	22.96	2.53	3.21	0.92	2.07	2.99	5.05	0.00	1.15	0.00	8.50	0.00	0.69	12.86	17.68	0.23	6.66	0.46	4.36	1.03	5.74
4.30	0.49	1.22	0.24	18.29	0.98	3.66	2.44	2.93	2.44	1.95	0.00	2.20	0.00	3.41	0.73	1.71	19.76	30.73	0.49	0.73	0.00	1.71	0.00	3.90
4.40	0.00	1.14	1.14	30.17	1.60	3.43	0.69	4.57	0.91	3.43	0.23	2.06	0.46	17.60	0.00	1.37	9.60	14.40	0.00	1.37	0.23	2.51	0.34	2.74
4.50	0.00	0.62	1.44	20.02	0.83	2.68	0.62	1.86	0.83	1.65	0.83	0.41	0.00	11.35	0.62	3.10	20.43	24.77	0.00	1.24	0.21	1.44	0.52	4.54
4.70	0.00	1.39	1.39	18.96	1.39	2.54	0.92	3.70	0.69	0.69	0.23	1.16	0.00	8.79	0.00	2.54	29.13	22.20	0.23	0.46	0.46	0.92	0.35	1.85
4.80	0.89	0.89	0.89	23.61	0.89	4.01	0.45	4.45	2.67	6.24	0.89	0.45	0.45	12.03	0.00	2.67	12.92	17.82	0.45	1.34	0.00	4.01	2.00	0.00
4.90	1.01	1.21	0.81	6.86	1.41	1.01	0.20	2.42	0.81	0.81	1.21	0.40	0.61	15.34	0.20	2.22	25.23	33.50	0.20	0.81	0.00	1.01	0.30	2.42
5.00	0.00	0.00	0.00	46.51	0.00	3.10	0.00	0.00	4.65	0.00	0.00	0.00	0.00	6.20	0.00	1.55	12.40	18.60	0.00	3.10	0.00	1.55	0.78	1.55
5.20	0.33	1.96	1.64	27.17	0.65	0.33	1.96	0.65	1.96	0.98	0.00	3.27	0.00	10.15	0.00	3.27	8.18	24.55	0.00	0.65	0.33	5.56	0.82	5.56
5.40	1.19	0.89	2.08	16.94	1.78	0.89	0.89	0.59	0.89	0.89	0.59	0.59	0.00	9.51	0.00	4.75	11.89	27.64	1.19	2.97	1.49	2.97	1.04	8.32
5.60	0.00	0.99	4.95	22.44	0.33	1.98	1.98	1.98	4.62	0.33	0.66	2.31	0.00	11.22	0.66	3.63	2.64	20.46	1.65	11.55	0.00	2.97	0.33	2.31
5.80	0.67	0.89	12.51	17.65	1.34	3.35	0.45	0.89	2.91	1.12	0.22	1.34	0.45	1.34	0.00	1.12	16.98	22.79	1.56	2.91	0.45	5.36	1.23	2.46
6.25	0.00	0.99	11.18	29.93	4.28	2.30	0.99	0.66	0.99	1.64	0.00	5.59	0.99	1.64	0.00	0.33	0.66	25.99	1.64	3.29	0.66	1.15	0.49	4.61
6.40	0.22	0.22	6.91	14.94	4.68	2.45	0.67	1.78	1.11	2.23	0.45	1.78	0.67	3.57	0.00	2.01	18.95	25.64	0.45	3.12	0.00	6.24	0.33	1.56
6.60	0.23	0.91	12.11	12.57	6.17	2.29	0.23	2.74	1.37	1.37	0.46	1.60	0.91	4.80	0.00	2.29	10.97	25.37	0.91	4.34	0.23	4.34	0.57	3.20
6.80	0.48	0.48	2.85	14.96	0.24	2.85	0.00	4.28	1.66	3.33	0.71	0.24	0.48	4.28	0.00	4.51	13.06	30.88	0.24	2.85	0.24	3.09	0.48	7.84
7.00	0.46	0.23	1.37	26.88	0.91	3.64	0.23	1.82	0.23	4.33	0.68	2.51	0.23	7.74	0.00	1.37	13.67	27.79	0.68	0.46	0.00	1.82	0.68	2.28
7.20	0.00	2.10	6.76	13.05	2.80	3.73	2.10	2.10	1.40	3.03	0.47	1.40	0.00	2.10	0.00	1.86	5.13	34.27	0.93	2.80	1.17	10.49	0.47	1.86
7.40	0.00	1.16	7.92	10.71	3.03	5.59	0.93	2.10	0.93	3.49	0.00	2.33	1.63	2.33	0.00	0.93	11.64	30.97	1.16	3.49	0.70	4.19	1.28	3.49
7.60	0.00	3.17	1.90	6.97	4.75	2.85	0.00	0.00	0.00	1.27	0.32	0.63	1.58	3.49	0.00	4.12	16.80	36.45	1.27	1.90	0.63	5.39	2.06	4.44
8.00	0.73	0.73	0.97	8.50	0.73	3.40	1.46	0.24	2.18	2.43	0.24	0.97	1.21	1.46	0.00	1.94	20.39	33.50	0.73	0.24	1.70	9.22	0.49	6.55
8.20	0.50	0.75	8.00	13.00	2.00	3.25	1.50	2.50	0.00	1.50	0.25	0.50	0.00	4.75	0.00	4.25	15.25	29.00	0.50	0.25	2.25	4.75	0.50	4.75
8.40	0.00	0.98	1.48	12.30	1.48	3.69	0.00	1.23	0.00	1.97	0.25	0.98	1.72	3.44	0.00	1.72	13.78	41.08	0.49	0.49	1.23	5.90	0.62	5.17
8.60	0.45	1.79	1.56	8.04	1.56	3.80	0.22	1.56	0.67	2.46	0.00	1.56	1.12	6.03	0.00	4.92	10.06	40.89	0.22	0.00	0.89	5.14	1.01	6.03
8.80	0.97	1.45	0.72	8.20	1.69	2.65	0.24	0.48	0.24	3.14	0.24	0.72	0.00	1.93	0.00	1.93	9.41	56.69	0.24	0.24	0.97	4.34	0.60	2.90
9.00	0.00	0.95	1.18	17.06	2.61	3.08	0.47	1.42	1.18	3.79	0.47	0.47	0.95	10.66	0.00	1.42	6.40	37.68	0.00	0.47	1.42	2.61	0.24	5.45
9.20	0.00	1.96	1.23	10.54	1.72	4.90	0.98	0.25	0.25	1.96	0.25	0.98	0.49	8.09	0.00	2.45	11.76	44.61	0.00	0.00	1.72	2.45	0.49	2.94
9.40	0.45	1.34	4.93	8.06	1.12	2.46	2.02	2.46	0.67	3.81	0.67	0.90	1.12	8.06	0.00	4.26	15.90	34.49	0.22	0.90	0.90	2.46	0.56	2.24
9.60	0.24	0.71	12.80	19.67	1.42	3.79	0.00	2.13	0.47	0.95	0.95	0.95	0.95	6.40	0.00	1.90	14.93	20.14	0.71	1.18	1.18	3.79	0.71	4.03
9.80	1.60	1.14	7.09	15.10	1.37	3.66	0.00	3.43	0.00	1.83	0.00	1.14	0.23	11.67	0.00	3.66	15.56	23.11	0.69	2.06	0.23	2.06	0.69	3.66
10.00	0.43	0.86	4.97	13.62	3.24	2.59	0.22	0.65	0.00	1.51	0.65	1.95	0.43	13.19	0.00	2.81	21.62	19.46	0.86	1.95	0.43	4.32	0.76	3.46
10.20	0.72	2.64	5.53	18.51	1.44	5.53	0.00	0.00	0.00	1.20	0.72	1.68	0.48	6.01	0.00	5.29	14.66	28.13	0.48	0.00	0.24	4.57	1.20	0.96
10.40	0.49	1.96	12.48	7.10	2.69	4.65	0.00	0.73	0.00	1.22	0.98	0.98	0.49	3.18	0.00	2.94	21.79	23.75	0.98	0.73	0.73	7.34	1.59	3.18
10.60	0.00	0.66	18.15	27.06	2.97	2.31	0.33	0.99	1.65	0.66	0.99	1.98	0.00	1.98	0.33	0.66	4.62	23.43	0.99	1.32	1.32	4.29	0.99	2.31
10.85	0.71	1.07	10.36	30.36	2.86	1.79	1.07	1.43	0.71	0.00	0.71	5.00	0.00	1.07	0.00	1.79	2.86	25.36	0.71	3.57	0.00	2.50	0.00	6.07
11.00	0.33	1.64	14.14	14.80	4.93	1.32	0.00	0.66	0.66	1.97	0.99	1.64	0.00	1.97	0.00	2.63	12.17	29.61	0.00	0.00	0.00	5.26	0.99	4.28
11.20	0.66	1.31	8.20	9.18	3.93	2.62	0.00	0.00	0.33	0.00	2.30	1.31	0.00	7.21	0.00	6.89	11.80	31.80	0.33	2.30	0.33	4.92	0.66	3.93
11.45	0.33	1.33	8.67	18.00	3.00	1.67	1.00	2.00	1.67	1.33	0.67	3.00	0.00	1.00	0.00	1.00	7.33	32.00	1.00	2.33	0.00	5.50	0.17	7.00
11.60	0.00	0.65	13.98	22.11	6.18	1.63	0.00	0.98	1.63	0.33	1.30	2.28	0.33	1.63	0.00	0.98	8.78	19.84	2.60	1.95	1.30	5.20	1.14	5.20
11.80	0.67	1.67	6.67	27.33	1.33	1.33	0.00	0.33	2.33	0.00	1.00	2.00	0.67	2.00	0.00	3.00	6.00	30.33	0.67	2.00	2.33	2.00	1.00	5.33