Citation:

PANGAEA.996758 (dataset in review)

Name: Diatom assemblages from IN2023_V01_04_KC02, Cape Darnley, East Antarctica
Creator: Molly Husdell
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Antarctica; Cape Darnley; Diatom; Sediment core

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Abstract:

This dataset comes from the marine sediment core, IN2023_V01_04_KC02, from Cape Darnley, East Antarctica (Post et al., 2024). Quantitative diatom slides were made using the method of Warnock & Scherer (2015). One mL of 30% hydrogen peroxide was added to 50–250 mg of dried sediment per sample every 24 h to oxidize and remove organic carbon until no reaction occurred. One mL of 10% sodium hexametaphosphate was added to aid in disaggregation. Coverslips were positioned within Phipps and Bird BKER2 2 L square beakers filled with deionised water. The sediment sample was added to the water and allowed to settle over a six-hour period. Settled coverslips were permanently mounted to clear microscope slides. Slides were then examined at 1000X magnification using a Leica DM 1000 LED light microscope in transects until >400 diatom valves were counted per slide and identified to the lowest taxonomic level possible, typically to species level. The preservation of diatom material was recorded using the semi-quantitative method of Warnock et al., (2015).

Keyword(s):

Antarctica; Cape Darnley; Diatom; Sediment core

Supplement to:

Husdell, Molly; Leventer, Amy; Lowe, Vikki; Gwyther, David E; Jeromson, Matthew R; Parrott, Alexandra E; Welsh, Kevin; Post, Alexandra L; Chase, Zanna; Noble, Taryn L; Bostock, Helen C (in review): Sea surface conditions and Antarctic Bottom Water formation offshore Cape Darnley, East Antarctica, over the last 600 ka: new insights from the diatom record. Paleoceanography and Paleoclimatology

References:

Post, Alexandra L; Bostock, Helen C; Chase, Zanna; Noble, Taryn L; Amarathunga, Udara; Armbrecht, Linda; Behrens, Bethany; Blanckensee, S; Camacho, Alfredo; Carroll, Andrew; Creac'h, Layla; Gunn, Kevin; Herweynan, D; Hughes, P; Husdell, Molly; Jeromson, Matthew R; Lalime, J; Leplastrier, A; Lowe, Vikki; Nanson, R; Nau, A; Navidad, C; Singh, P; Surapaneni, V; Trihey, J; Wenderlich, M J; Williams, T (2024): Post-survey report: CANYONS - Cape Darnley paleoceanography from sediment cores IN2023_V01. Commonwealth of Australia (Geoscience Australia), https://doi.org/10.26186/149094

Warnock, Jonathan; Scherer, Reed P (2015): Diatom species abundance and morphologically-based dissolution proxies in coastal Southern Ocean assemblages. Continental Shelf Research, 102, 1-8, https://doi.org/10.1016/j.csr.2015.04.012

Coverage:

Latitude: -65.501331 * Longitude: 65.309780

Date/Time Start: 2023-02-08T00:00:00 * Date/Time End: 2023-02-08T00:00:00

Minimum DEPTH, sediment/rock: 0.00 m * Maximum DEPTH, sediment/rock: 3.68 m

Event(s):

IN2023_V01_04KC02 * Latitude: -65.501331 * Longitude: 65.309780 * Date/Time: 2023-02-08T00:00:00 * Elevation: -2712.0 m * Recovery: 3.71 m * Campaign: (CANYONS) * Basis: * Method/Device: Kasten corer (KAL)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	DEPTH, sediment/rock	Depth sed	m	Husdell, Molly		Geocode – upper depth
2	Distance	Dist	mm	Husdell, Molly		distance traversed
3	Dry mass	Dry m	g	Husdell, Molly
4	Area	Area	mm²	Husdell, Molly		BKER2 area
5	Diameter	Ø	mm	Husdell, Molly		FOV diameter
6	Diatoms, total	Diatoms tot	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
7	Diatoms, total	Diatoms	10⁶ #/g	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]	ADA = absolute diatom abundance
8	Diatom preservation	Diatom preserv		Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]	Best preservation
9	Diatom preservation	Diatom preserv		Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]	Worst preservation
10	Actinocyclus actinochilus	A. actinochilus	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
11	Actinocyclus curvulatus	A. curvulatus	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
12	Actinocyclus dimorphus	A. dimorphus	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
13	Actinocyclus ingens	A. ingens	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
14	Actinocyclus karstenii	A. karstenii	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
15	Actinocyclus spp.	Actinocyclus spp.	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
16	Actinoptychus senarius	A. senarius	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
17	Anulus spp.	Anulus spp.	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
18	Asteromphalus hookeri	A. hookeri	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
19	Asteromphalus parvulus	A. parvulus	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
20	Azpeitia tabularis	A. tabularis	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
21	Azpeitia spp.	Azpeitia spp.	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
22	Chaetoceros bulbosum	C. bulbosum	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
23	Chaetoceros	Chaetoceros	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]	subg. Hyalochaete
24	Chaetoceros	Chaetoceros	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]	subg. Phaeceros
25	Cocconeis spp.	Cocconeis spp.	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
26	Coscinodiscus spp.	Coscinodiscus spp.	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
27	Denticulopsis ovata	D. ovata	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
28	Denticulopsis simonsenii	D. simonsenii	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
29	Diploneis spp.	Diploneis spp.	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
30	Eucampia antarctica	E. antarctica	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
31	Fragilariopsis bohatyi	F. bohatyi	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
32	Fragilariopsis barronii	F. barronii	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
33	Fragilariopsis curta	F. curta	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
34	Fragilariopsis cylindrus	F. cylindrus	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
35	Fragilariopsis kerguelensis	F. kerguelensis	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
36	Fragilariopsis obliquecostata	F. obliquecostata	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
37	Fragilariopsis peragallii	F. peragallii	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
38	Fragilariopsis pseudonana	F. pseudonana	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
39	Fragilariopsis praecurta	F. praecurta	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
40	Fragilariopsis rhombica	F. rhombica	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
41	Fragilariopsis ritscheri	F. ritscheri	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
42	Fragilariopsis robusta	F. robusta	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
43	Fragilariopsis separanda	F. separanda	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
44	Fragilariopsis sublinearis	F. sublinearis	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
45	Fragilariopsis vanheurckii	F. vanheurckii	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
46	Fragilariopsis spp.	Fragilariopsis spp.	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
47	Hemidiscus karstenii	H. karstenii	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
48	Hyalodiscus spp.	Hyalodiscus spp.	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
49	Odontella weissflogii	O. weissflogii	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
50	Paralia spp.	Paralia spp.	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
51	Porosira glacialis	P. glacialis	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
52	Porosira pseudodenticulata	P. pseudodenticulata	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
53	Proboscia spp.	Proboscia spp.	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
54	Proboscia barboi	P. barboi	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
55	Pseudonitzschia spp.	Pseudonitzschia spp.	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
56	Rhizosolenia harwoodii	R. harwoodii	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
57	Rhizosolenia spp.	Rhizosolenia spp.	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
58	Rouxia antarctica	R. antarctica	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
59	Rouxia constricta	R. constricta	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
60	Rouxia diploneides	R. diploneides	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
61	Rouxia leventerae	R. leventerae	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
62	Rouxia naviculoides	R. naviculoides	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
63	Rouxia spp.	Rouxia spp.	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
64	Shionodiscus frenguellii	S. frenguellii	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
65	Shionodiscus gracilis var. expectus	S. gracilis var. expectus	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
66	Shionodiscus gracilis var. gracilis	S. gracilis var. gracilis	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
67	Shionodiscus oestrupii	S. oestrupii	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
68	Shionodiscus tetraoestrupii var. reimeri	S. tetraoestrupii var. reimeri	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
69	Shionodiscus trifultus	S. trifultus	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
70	Stellarima microtrias	S: microtrias	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
71	Stephanopyxis spp.	Stephanopyxis spp.	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
72	Thalassionema nitzschioides	T. nitzschioides	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
73	Thalassiosira antarctica	T. antarctica	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
74	Thalassiosira complicata	T. complicata	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
75	Thalassiosira elliptipora	T. elliptipora	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
76	Thalassiosira fasciculata	T. fasciculata	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
77	Thalassiosira inura	T. inura	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
78	Thalassiosira kolbei	T. kolbei	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
79	Thalassiosira lentiginosa	T. lentiginosa	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
80	Thalassiosira oliverana	T. oliverana	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
81	Thalassiosira symmetrica	T. symmetrica	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
82	Thalassiosira torokina	T. torokina	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
83	Thalassiosira tumida	T. tumida	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
84	Thalassiosira spp.	Thalassiosira spp.	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
85	Thalassiothrix antarctica	T. antarctica	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
86	Trichotoxon reinboldii	T. reinboldii	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
87	Trinacria spp.	Trinacria spp.	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]
88	Diatoms indeterminata	Diatoms indet	#	Husdell, Molly	Light microscope, Leica, DM1000 LED [1000× magnification]

License:

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

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

8352 data points

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