Citation:

PANGAEA.989298 (dataset in review)

Name: Biomarkers and diatoms in a transect of southwestern Ross Sea sediment cores
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Antarctica; Biomarkers; Diatom; fatty acids; highly branched isoprenoid (HBI); Ross Sea; Sediment core

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Abstract:

This dataset contains biomarker data (fatty acids, highly branched isoprenoids, and sterols) from six sediment cores collected during two cruises in 2014/2015 (ANA04C, ANA05B) along a transect in the southwestern Ross Sea. Three sediment cores were sampled at 0-1 cm only, while the remaining three were subsampled at various depths between 1 and 56 cm, covering approximately the last 200 years based on a 210Pb dating model. Also reported are measurements of total organic carbon, and total nitrogen, as well as diatom assemblage data, including total abundance and relative species or group level concentrations.

Keyword(s):

Antarctica; Biomarkers; Diatom; fatty acids; highly branched isoprenoid (HBI); Ross Sea; Sediment core

Related to:

de Jong, Emma Maria; Crosta, Xavier; Naeher, Sebastian; Duncan, Bella; Etourneau, Johan; Lee, Jae Il; McKay, Robert M; Winton, V Holly L (preprint): Biomarkers and diatoms as tracers of past sea ice conditions and phytoplankton communities in the southwestern Ross Sea, Antarctica: drivers and variability over the last 200 years. Biogeosciences, https://doi.org/10.5194/egusphere-2025-5553

Funding:

Ministry of Business, Innovation and Employment (MBIE), grant/award no. C05X1702: Strategic Science Investment Funding (SSIF) as part of the Global Change Through Time Programme

Royal Society Te Apārangi, grant/award no. MFP-VUW2107

Royal Society Te Apārangi, grant/award no. RDF-VUW2203

Coverage:

Median Latitude: -76.530044 * Median Longitude: 163.671094 * South-bound Latitude: -77.245425 * West-bound Longitude: 163.000343 * North-bound Latitude: -75.947987 * East-bound Longitude: 164.563040

Minimum DEPTH, sediment/rock: 0.005 m * Maximum DEPTH, sediment/rock: 0.495 m

Event(s):

RS14-BC02 * Latitude: -76.844917 * Longitude: 163.843517 * Location: Southwestern Ross Sea * Campaign: * Basis: Araon * Method/Device: Box corer (BC) * Comment: Core taken in February 2014

RS14-BC03 * Latitude: -76.083333 * Longitude: 163.216667 * Location: Southwestern Ross Sea * Campaign: * Basis: Araon * Method/Device: Box corer (BC) * Comment: Core taken in February 2014

RS14-BC04 * Latitude: -75.947987 * Longitude: 163.000343 * Location: Southwestern Ross Sea * Campaign: * Basis: Araon * Method/Device: Box corer (BC) * Comment: Core taken in February 2014

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event		Winton, V Holly L
2	DEPTH, sediment/rock	Depth sed	m	Winton, V Holly L		Geocode
3	Depth, top/min	Depth top	m	Winton, V Holly L
4	Depth, bottom/max	Depth bot	m	Winton, V Holly L
5	Polonium-210	210Po	Bq/kg	Winton, V Holly L	Alpha spectrometry
6	Polonium-210	210Po	Bq/kg	Winton, V Holly L	Alpha spectrometry
7	AGE	Age	ka BP	Winton, V Holly L	Constant sedimentation Pb-210 dating model	Geocode
8	Age	Age	a AD/CE	Winton, V Holly L	Constant sedimentation Pb-210 dating model
9	Age, error	Age e	±	Winton, V Holly L	Constant sedimentation Pb-210 dating model	years
10	Carbon, organic, total	TOC	%	Winton, V Holly L	Micro CN elemental analyzer, Thermo Fisher Scientific, FlashSmart
11	Nitrogen, total	TN	%	Winton, V Holly L	Micro CN elemental analyzer, Thermo Fisher Scientific, FlashSmart
12	Diatoms, total	Diatoms	10⁶ #/g	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2	Diatom abundance per dry mass sediment
13	Actinocyclus actinochilus	A. actinochilus	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
14	Actinocyclus curvatulus	A. curvatulus	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
15	Actinocyclus cf. ehrenbergii	A. cf. ehrenbergii	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
16	Actinocyclus sp.	Actinocyclus sp.	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
17	Asteromphalus hookeri	A. hookeri	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
18	Asteromphalus hyalinus	A. hyalinus	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
19	Asteromphalus parvulus	A. parvulus	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
20	Diatoms, centrales indeterminata	Diatom cen indet	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2	Centric sp. 1
21	Chaetoceros atlanticus	C. atlanticus	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
22	Chaetoceros bulbosum	C. bulbosum	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
23	Chaetoceros criophilus	C. criophilus	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
24	Chaetoceros, resting spores	Chaetoceros rs	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
25	Cocconeis fasciolata	C. fasciolata	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
26	Corethron criophilum	C. criophilum	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
27	Coscinodiscus oculus-iridis	C. oculus-iridis	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
28	Coscinodiscus sp.	Coscinodiscus sp.	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
29	Eucampia antarctica var. intermedia	E. antarctica var. intermedia	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
30	Eucampia antarctica var. terminalis	E. antarctica var. terminalis	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
31	Entomoneis sp.	Entomoneis sp.	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
32	Fragilariopsis curta	F. curta	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
33	Fragilariopsis cylindrus	F. cylindrus	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
34	Fragilariopsis spp., cryophilic	Fragilariopsis spp. cryophilic	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
35	Fragilariopsis kerguelensis	F. kerguelensis	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
36	Fragilariopsis obliquecostata	F. obliquecostata	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
37	Fragilariopsis rhombica	F. rhombica	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
38	Fragilariopsis ritscheri	F. ritscheri	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
39	Fragilariopsis separanda	F. separanda	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
40	Fragilariopsis sublinearis	F. sublinearis	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
41	Fragilariopsis vanheurckii	F. vanheurckii	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
42	Navicula directa	N. directa	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
43	Nitzschia stellata	N. stellata	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
44	Odontella weissflogii	O. weissflogii	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
45	Pleurosigma directum	P. directum	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
46	Porosira glacialis	P. glacialis	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
47	Proboscia pseudodenticulata	P. pseudodenticulata	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
48	Proboscia alata	P. alata	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
49	Proboscia truncata	P. truncata	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
50	Proboscia inermis	P. inermis	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
51	Proboscia sp.	Proboscia sp.	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
52	Pseudo-nitzschia lineola	P-n lineola	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
53	Pseudo-nitzschia turgiduloides	P-n turgiduloides	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
54	Rhizosolenia antennata var. semispina	R. antennata var. semispina	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
55	Rhizosolenia antennata forma antennata	R. antennata f antennata	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
56	Rhizosolenia sp.	Rhizosolenia sp.	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
57	Shionodiscus gracilis	S. gracilis	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
58	Shionodiscus ritscheri	S. ritscheri	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
59	Shionodiscus trifultus	S. trifultus	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
60	Stellarima microtrias	S. microtrias	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
61	Synedropsis fragilis	S. fragilis	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
62	Synedropsis hyperboreoides	S. hyperboreoides	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
63	Synedropsis recta	S. recta	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
64	Thalassiosira antarctica	T. antarctica	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2	cold
65	Thalassiosira lentiginosa	T. lentiginosa	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
66	Thalassiosira maculata	T. maculata	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
67	Thalassiosira oliverana	T. oliverana	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
68	Thalassiosira tumida	T. tumida	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
69	Thalassiothrix antarctica	T. antarctica	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
70	Trichotoxon reinboldii	T. reinboldii	%	Winton, V Holly L	Phase contrast photomicroscope, Olympus, BH2
71	Ice Proxy for the Southern Ocean with 25 carbon atoms per unit total organic carbon	IPSO25/TOC	µg/g	Winton, V Holly L	Gas chromatograph (GC), Agilent, 7890A; equipped with a mass selective detector (MSD), Agilent, 5975C	IPSO25 HBI diene
72	24-Methylcholesta-5,22E-dien-3beta-ol, per unit mass total organic carbon	Brassicasterol/TOC	µg/g	Winton, V Holly L	Gas chromatograph (GC), Agilent, 7890A; equipped with a mass selective detector (MSD), Agilent, 5975C
73	4alpha,23,24-Trimethyl-5alpha-cholest-22E-en-3beta-ol, per unit mass total organic carbon	Dinosterol/TOC	µg/g	Winton, V Holly L	Gas chromatograph (GC), Agilent, 7890A; equipped with a mass selective detector (MSD), Agilent, 5975C
74	Dodecanoic acid, per unit mass total organic carbon	12:0/TOC	µg/g	Winton, V Holly L	Gas chromatograph (GC), Agilent, 7890A; equipped with a mass selective detector (MSD), Agilent, 5975C
75	iso-Tridecanoic acid, per unit mass total organic carbon	i-13:0/TOC	µg/g	Winton, V Holly L	Gas chromatograph (GC), Agilent, 7890A; equipped with a mass selective detector (MSD), Agilent, 5975C
76	anteiso-Tridecanoic acid, per unit mass total organic carbon	ai-13:0/TOC	µg/g	Winton, V Holly L	Gas chromatograph (GC), Agilent, 7890A; equipped with a mass selective detector (MSD), Agilent, 5975C
77	Tridecanoic acid, per unit mass total organic carbon	13:0/TOC	µg/g	Winton, V Holly L	Gas chromatograph (GC), Agilent, 7890A; equipped with a mass selective detector (MSD), Agilent, 5975C
78	iso-Tetradecanoic acid, per unit mass total organic carbon	i-14:0/TOC	µg/g	Winton, V Holly L	Gas chromatograph (GC), Agilent, 7890A; equipped with a mass selective detector (MSD), Agilent, 5975C
79	9-Tetradecenoic acid, per unit mass total organic carbon	14:1(n-5)/TOC	µg/g	Winton, V Holly L	Gas chromatograph (GC), Agilent, 7890A; equipped with a mass selective detector (MSD), Agilent, 5975C	C14:1ω5
80	Tetradecanoic acid, per unit mass total organic carbon	14:0/TOC	µg/g	Winton, V Holly L	Gas chromatograph (GC), Agilent, 7890A; equipped with a mass selective detector (MSD), Agilent, 5975C
81	iso-Pentadecanoic acid, per unit mass total organic carbon	i-15:0/TOC	µg/g	Winton, V Holly L	Gas chromatograph (GC), Agilent, 7890A; equipped with a mass selective detector (MSD), Agilent, 5975C
82	anteiso-Pentadecanoic acid, per unit mass total organic carbon	ai-15:0/TOC	µg/g	Winton, V Holly L	Gas chromatograph (GC), Agilent, 7890A; equipped with a mass selective detector (MSD), Agilent, 5975C
83	Pentadecanoic acid, per unit mass total organic carbon	15:0/TOC	µg/g	Winton, V Holly L	Gas chromatograph (GC), Agilent, 7890A; equipped with a mass selective detector (MSD), Agilent, 5975C
84	iso-Hexadecanoic acid, per unit mass total organic carbon	i-16:0/TOC	µg/g	Winton, V Holly L	Gas chromatograph (GC), Agilent, 7890A; equipped with a mass selective detector (MSD), Agilent, 5975C
85	anteiso-Hexadecanoic acid, per unit mass total organic carbon	ai-16:0/TOC	µg/g	Winton, V Holly L	Gas chromatograph (GC), Agilent, 7890A; equipped with a mass selective detector (MSD), Agilent, 5975C
86	8-Hexadecenoic acid, per unit mass total organic carbon	16:1(n-8)/TOC	µg/g	Winton, V Holly L	Gas chromatograph (GC), Agilent, 7890A; equipped with a mass selective detector (MSD), Agilent, 5975C	C16:1ω8
87	9-Hexadecenoic acid, per unit mass total organic carbon	16:1(n-7)/TOC	µg/g	Winton, V Holly L	Gas chromatograph (GC), Agilent, 7890A; equipped with a mass selective detector (MSD), Agilent, 5975C	C16:1ω7
88	10-Hexadecenoic acid, per unit mass total organic carbon	16:1(n-6)/TOC	µg/g	Winton, V Holly L	Gas chromatograph (GC), Agilent, 7890A; equipped with a mass selective detector (MSD), Agilent, 5975C	C16:1ω6
89	11-Hexadecenoic acid, per unit mass total organic carbon	16:1(n-5)/TOC	µg/g	Winton, V Holly L	Gas chromatograph (GC), Agilent, 7890A; equipped with a mass selective detector (MSD), Agilent, 5975C	C16:1ω5
90	Hexadecanoic acid, per unit mass total organic carbon	16:0/TOC	µg/g	Winton, V Holly L	Gas chromatograph (GC), Agilent, 7890A; equipped with a mass selective detector (MSD), Agilent, 5975C
91	iso-Heptadecanoic acid, per unit mass total organic carbon	i-17:0/TOC	µg/g	Winton, V Holly L	Gas chromatograph (GC), Agilent, 7890A; equipped with a mass selective detector (MSD), Agilent, 5975C
92	anteiso-Heptadecanoic acid, per unit mass total organic carbon	ai-17:0/TOC	µg/g	Winton, V Holly L	Gas chromatograph (GC), Agilent, 7890A; equipped with a mass selective detector (MSD), Agilent, 5975C
93	9-Heptadecenoic acid, per unit mass total organic carbon	17:1(n-8)/TOC	µg/g	Winton, V Holly L	Gas chromatograph (GC), Agilent, 7890A; equipped with a mass selective detector (MSD), Agilent, 5975C	C17:1ω8
94	10-Heptadecenoic acid, per unit mass total organic carbon	17:1(n-7)/TOC	µg/g	Winton, V Holly L	Gas chromatograph (GC), Agilent, 7890A; equipped with a mass selective detector (MSD), Agilent, 5975C	C17:1ω7
95	Heptadecanoic acid, per unit mass total organic carbon	17:0/TOC	µg/g	Winton, V Holly L	Gas chromatograph (GC), Agilent, 7890A; equipped with a mass selective detector (MSD), Agilent, 5975C
96	Octadeca-5,9-dienoic acid, per unit mass total organic carbon	18:2(5,9)/TOC	µg/g	Winton, V Holly L	Gas chromatograph (GC), Agilent, 7890A; equipped with a mass selective detector (MSD), Agilent, 5975C	C18:2ω5,9
97	9-Octadecenoic acid, per unit mass total organic carbon	18:1(n-9)/TOC	µg/g	Winton, V Holly L	Gas chromatograph (GC), Agilent, 7890A; equipped with a mass selective detector (MSD), Agilent, 5975C	C18:1ω9
98	11-Octadecenoic acid, per unit mass total organic carbon	18:1(n-7)/TOC	µg/g	Winton, V Holly L	Gas chromatograph (GC), Agilent, 7890A; equipped with a mass selective detector (MSD), Agilent, 5975C	C18:1ω7
99	12-Octadecenoic acid, per unit mass total organic carbon	18:1(n-6)/TOC	µg/g	Winton, V Holly L	Gas chromatograph (GC), Agilent, 7890A; equipped with a mass selective detector (MSD), Agilent, 5975C	C18:1ω6
100	13-Octadecenoic acid, per unit mass total organic carbon	18:1(n-5)/TOC	µg/g	Winton, V Holly L	Gas chromatograph (GC), Agilent, 7890A; equipped with a mass selective detector (MSD), Agilent, 5975C	C18:1ω5
101	Octadecanoic acid, per unit mass total organic carbon	18:0/TOC	µg/g	Winton, V Holly L	Gas chromatograph (GC), Agilent, 7890A; equipped with a mass selective detector (MSD), Agilent, 5975C
102	11-Nonadecenoic acid, per unit mass total organic carbon	19:1(n-8)/TOC	µg/g	Winton, V Holly L	Gas chromatograph (GC), Agilent, 7890A; equipped with a mass selective detector (MSD), Agilent, 5975C	C19:1ω8
103	11-Eicosenoic acid, per unit mass total organic carbon	20:1(n-9)/TOC	µg/g	Winton, V Holly L	Gas chromatograph (GC), Agilent, 7890A; equipped with a mass selective detector (MSD), Agilent, 5975C	C20:1ω9
104	Eicosanoic acid, per unit mass total organic carbon	20:0/TOC	µg/g	Winton, V Holly L	Gas chromatograph (GC), Agilent, 7890A; equipped with a mass selective detector (MSD), Agilent, 5975C
105	Heneicosanoic acid, per unit mass total organic carbon	21:0/TOC	µg/g	Winton, V Holly L	Gas chromatograph (GC), Agilent, 7890A; equipped with a mass selective detector (MSD), Agilent, 5975C
106	13-Docosenoic acid, per unit mass total organic carbon	22:1(n-9)/TOC	µg/g	Winton, V Holly L	Gas chromatograph (GC), Agilent, 7890A; equipped with a mass selective detector (MSD), Agilent, 5975C	C22:1ω9
107	Docosanoic acid, per unit mass total organic carbon	22:0/TOC	µg/g	Winton, V Holly L	Gas chromatograph (GC), Agilent, 7890A; equipped with a mass selective detector (MSD), Agilent, 5975C
108	Tricosanoic acid, per unit mass total organic carbon	23:0/TOC	µg/g	Winton, V Holly L	Gas chromatograph (GC), Agilent, 7890A; equipped with a mass selective detector (MSD), Agilent, 5975C
109	Tetracosanoic acid, per unit mass total organic carbon	24:0/TOC	µg/g	Winton, V Holly L	Gas chromatograph (GC), Agilent, 7890A; equipped with a mass selective detector (MSD), Agilent, 5975C
110	Pentacosanoic acid, per unit mass total organic carbon	25:0/TOC	µg/g	Winton, V Holly L	Gas chromatograph (GC), Agilent, 7890A; equipped with a mass selective detector (MSD), Agilent, 5975C
111	Hexacosanoic acid, per unit mass total organic carbon	26:0/TOC	µg/g	Winton, V Holly L	Gas chromatograph (GC), Agilent, 7890A; equipped with a mass selective detector (MSD), Agilent, 5975C
112	Octacosanoic acid, per unit mass total organic carbon	28:0/TOC	µg/g	Winton, V Holly L	Gas chromatograph (GC), Agilent, 7890A; equipped with a mass selective detector (MSD), Agilent, 5975C
113	Triacontanoic acid, per unit mass total organic carbon	30:0/TOC	µg/g	Winton, V Holly L	Gas chromatograph (GC), Agilent, 7890A; equipped with a mass selective detector (MSD), Agilent, 5975C

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Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)

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2740 data points

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