Citation:

PANGAEA.983423 (DOI registration in progress)

Name: Macroremain counts from borehole Sokli B series in Sokli (Finland) in 2002
Published: 2025-07-01
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Brorup; Chironomids; diatoms; Finland; loss on ignition; Macro-remains; MIS-5cd; non-pollen palynomorphs; Pollen; Sokli

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Published: 2025-07-01

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Abstract:

This dataset provides absolute counts of botanical and zoological macro-remains obtained from the Early Weichselian sediment sequence retrieved from Sokli (Finland) in 2002. Counts per taxon are presented against sediment depth (m), and the volume of sediment used for each sample (ml3) is provided to allow the calculation of concentrations. For some taxa relative counts (Rel) are presented where: Rel.1 = Rare, less than 5 occurrences; Rel.2 = regular-mass occurrences. The macroremain dataset consists of a total of 90 samples and provides information on terrestrial and aquatic ecosystem dynamics (Helmens et al., 2012) and was used to reconstruct climate conditions (Väliranta et al., 2009). Macrofossil samples were prepared from subsamples of mainly ca. 10 ml³. The sediment was sieved using a 100 μm mesh under running water and the residue examined using stereo and high-magnification light microscopes. The volume of the sediment used for plant-macrofossil analysis was determined by displacement of water. It varied between 5 and 15 cm3 but was typically 10 cm³. The sediment was soaked in Na4P2O7.H2O (sodium pyrophosphate) solution to aid sediment disintegration. The sediment was sieved through a 100 um mesh and the residue was systematically examined at 10 magnification using a stereo-microscope. Critical identifications were made using a high-magnification light microscope. The analyses were performed in the laboratories of Stockholm University, Sweden.

Keyword(s):

Brorup; Chironomids; diatoms; Finland; loss on ignition; Macro-remains; MIS-5cd; non-pollen palynomorphs; Pollen; Sokli

Related to:

Engels, Stefan; Helmens, Karin F; Väliranta, Minna; Brooks, Stephen J; Birks, H John B (2010): Early Weichselian (MIS 5d and 5c) temperatures and environmental changes in northern Fennoscandia as recorded by chironomids and macroremains at Sokli, northeast Finland. Boreas, 39(4), 689-704, https://doi.org/10.1111/j.1502-3885.2010.00163.x

Helmens, Karin F; Väliranta, Minna; Engels, Stefan; Shala, Shyhrete (2012): Large shifts in vegetation and climate during the Early Weichselian (MIS 5d-c) inferred from multi-proxy evidence at Sokli (northern Finland). Quaternary Science Reviews, 41, 22-38, https://doi.org/10.1016/j.quascirev.2012.02.008

References:

Väliranta, Minna; Birks, Hilary H; Helmens, Karin; Engels, Stefan; Piirainen, Mikko (2009): Early Weichselian interstadial (MIS 5c) summer temperatures were higher than today in northern Fennoscandia. Quaternary Science Reviews, 28(9-10), 777-782, https://doi.org/10.1016/j.quascirev.2009.01.004

Coverage:

Latitude: 67.800278 * Longitude: 29.300278

Date/Time Start: 2002-04-15T08:00:00 * Date/Time End: 2002-04-18T18:00:00

Minimum DEPTH, sediment/rock: 13.420 m * Maximum DEPTH, sediment/rock: 19.620 m

Event(s):

Sokli_2002/4 (Borehole Sokli B series) * Latitude: 67.800278 * Longitude: 29.300278 * Date/Time Start: 2002-04-15T08:00:00 * Date/Time End: 2002-04-18T18:00:00 * Elevation: 220.0 m * Location: Finland * Method/Device: Hydraulic piston corer, GM 100

Comment:

The funding was provided by Swedish Nuclear Fuel and Waste Management Company (SKB) and Bolin Centre for Climate Research (Stockholm University).

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	DEPTH, sediment/rock	Depth sed	m	Väliranta, Minna		Geocode
2	Volume	Vol	ml	Väliranta, Minna	see description in data abstract
3	Callitriche cophocarpa/Callitriche hamulata, seeds	C. cophocarpa/C. hamulata seeds	#	Väliranta, Minna	see description in data abstract
4	Callitriche hermaphroditica, seeds	C. hermaphroditica seeds	#	Väliranta, Minna	see description in data abstract	Callitriche hermafroditica seed
5	Callitriche sp., seeds	Callitriche sp. seeds	#	Väliranta, Minna	see description in data abstract
6	Chara, oospore	Chara oospore	#	Väliranta, Minna	see description in data abstract
7	Cristatella statoblast	C. statoblast	#	Väliranta, Minna	see description in data abstract
8	Daphnia ephippium	D. ephippium	#	Väliranta, Minna	see description in data abstract
9	Elatine triandra	E. triandra	#	Väliranta, Minna	see description in data abstract
10	Fredericella statoblast	F. statoblast	#	Väliranta, Minna	see description in data abstract
11	Hippuris, seeds	Hippuris seeds	#	Väliranta, Minna	see description in data abstract
12	Isoetes echinospora, megaspore	I echinospora megaspore	#	Väliranta, Minna	see description in data abstract
13	Najas tenuissima seeds	N. tenuissima seeds	#	Väliranta, Minna	see description in data abstract
14	Nitella, oospores	Nitella oospores	#	Väliranta, Minna	see description in data abstract
15	Nuphar, seeds	Nuphar seeds	#	Väliranta, Minna	see description in data abstract
16	Pectinatella statoblasts	P. statoblasts	#	Väliranta, Minna	see description in data abstract
17	Plumatella statoblasts	Plu.stat	#	Väliranta, Minna	see description in data abstract
18	Potamogeton-type friesii, seeds or leaf tips	Potamogeton-T friesii seeds or leaf tips	#	Väliranta, Minna	see description in data abstract
19	Potamogeton sp., seeds	Potamogeton sp. seeds	#	Väliranta, Minna	see description in data abstract
20	Ranunculus sect. Batrachium, seeds	Ranunculus sect. Batrachium seeds	#	Väliranta, Minna	see description in data abstract
21	Simocephalus ephippium	S. ephippium	#	Väliranta, Minna	see description in data abstract
22	Nymphaea, astrosclereids	Nymphaea astrosclereids	#	Väliranta, Minna	see description in data abstract	1000 = number not quantified
23	Charcoal	Charcoal	#	Väliranta, Minna	see description in data abstract
24	Achillea ptarmica/Achillea millefolium, seeds	A. ptarmica/A. millefolium seeds	#	Väliranta, Minna	see description in data abstract
25	Inula salicina, seeds	I. salicina seeds	#	Väliranta, Minna	see description in data abstract
26	Asteraceae, seeds	Asteraceae seeds	#	Väliranta, Minna	see description in data abstract
27	Bidens tripartita, seeds	B. tripartita seeds	#	Väliranta, Minna	see description in data abstract
28	Brassicaceae, seeds	Brassicaceae seeds	#	Väliranta, Minna	see description in data abstract
29	Carex, seeds	Carex seeds	#	Väliranta, Minna	see description in data abstract
30	Caryophyllaceae, seeds	Caryophyllaceae seeds	#	Väliranta, Minna	see description in data abstract
31	Cerastium cf. fontanum, seeds	C. cf. fontanum seeds	#	Väliranta, Minna	see description in data abstract
32	Cicuta virosa, seeds	C. virosa seeds	#	Väliranta, Minna	see description in data abstract
33	Crassula aquatica, seeds	C. aquatica seeds	#	Väliranta, Minna	see description in data abstract
34	Fern, sporangia	Fern sporangia	#	Väliranta, Minna	see description in data abstract
35	Glyceria fluitans, seeds	G. fluitans seeds	#	Väliranta, Minna	see description in data abstract
36	Grass, seeds	Grass seeds	#	Väliranta, Minna	see description in data abstract
37	Juncus, seeds	Juncus seeds	#	Väliranta, Minna	see description in data abstract
38	Luzula, seeds	Luzula seeds	#	Väliranta, Minna	see description in data abstract
39	Menyanthes trifoliata, seeds	M. trifoliata seeds	#	Väliranta, Minna	see description in data abstract
40	Montia fontana, seeds	M. fontana seeds	#	Väliranta, Minna	see description in data abstract
41	Polygonaceae, seeds	Polygonaceae seeds	#	Väliranta, Minna	see description in data abstract
42	Potentilla palustris, seeds	P. palustris seeds	#	Väliranta, Minna	see description in data abstract
43	Potentilla sp., seeds	Potentilla sp. seeds	#	Väliranta, Minna	see description in data abstract
44	Ranunculus sceleratus, seeds	R. sceleratus seeds	#	Väliranta, Minna	see description in data abstract
45	Ranunculus sp., seeds	Ranunculus sp. seeds	#	Väliranta, Minna	see description in data abstract
46	Ranunculus acris-type, seeds	R. acris-T seeds	#	Väliranta, Minna	see description in data abstract
47	Ranunculus auricomus-type	R. auricomus-T	#	Väliranta, Minna	see description in data abstract
48	Ranunculus hyperboreus, seeds	R. hyperboreu, seeds	#	Väliranta, Minna	see description in data abstract
49	Rhynchospora alba, seeds	R. alba seeds	#	Väliranta, Minna	see description in data abstract
50	Rorippa palustris, seeds	R. palustris seeds	#	Väliranta, Minna	see description in data abstract
51	Rubus, seeds	Rubus seeds	#	Väliranta, Minna	see description in data abstract	Not chamaemorus
52	Rumex sp., seeds	Rumex sp. seeds	#	Väliranta, Minna	see description in data abstract
53	Stellaria graminea	Ste.g	#	Väliranta, Minna	see description in data abstract
54	Thalictrum sp., seeds	Thalictrum sp. seeds	#	Väliranta, Minna	see description in data abstract
55	Trichophorum alpinum, seeds	T. alpinum seeds	#	Väliranta, Minna	see description in data abstract
56	Typha, seeds	Typha seeds	#	Väliranta, Minna	see description in data abstract
57	Urtica dioica, seeds	U. dioica seeds	#	Väliranta, Minna	see description in data abstract
58	Alnus, seeds	Alnus seeds	#	Väliranta, Minna	see description in data abstract
59	Betula, bud scales	Betula bud scales	#	Väliranta, Minna	see description in data abstract
60	Betula nana, seeds or catkin scale	Betula nana seeds or catkin sca	#	Väliranta, Minna	see description in data abstract
61	Betula, seeds or catkin scale	Betula seeds or catkin sca	#	Väliranta, Minna	see description in data abstract
62	Tree type Betula, seeds or catkin scale	Tree Betula seeds or catkin sca	#	Väliranta, Minna	see description in data abstract
63	Betula, leaves or barks	Betula leaves or barks	#	Väliranta, Minna	see description in data abstract
64	Conifer, bark or bud scale	Conifer bark or bud scale	#	Väliranta, Minna	see description in data abstract
65	Empetrum nigrum, seeds or leaves	E. nigrum seeds or leaves	#	Väliranta, Minna	see description in data abstract
66	Ericaceae sensu lato, vegetative remains	Ericaceae sl vegetative rem	#	Väliranta, Minna	see description in data abstract
67	Salix, vegetative remains	Salix vegetative rem	#	Väliranta, Minna	see description in data abstract
68	Wood	Wood	#	Väliranta, Minna	see description in data abstract
69	Fungi sclerotia	F. sclerotia	#	Väliranta, Minna	see description in data abstract
70	Fish, scale	Fish scale	#	Väliranta, Minna	see description in data abstract
71	Mite	Mite	#	Väliranta, Minna	see description in data abstract
72	Nephelis octoculata	N. octoculata	#	Väliranta, Minna	see description in data abstract
73	Lemming teeth	Lemming teeth	#	Väliranta, Minna	see description in data abstract
74	Selaginella selaginoides, megaspore	S. selaginoides megaspore	#	Väliranta, Minna	see description in data abstract
75	Aulacomnium palustre	A. palustre		Väliranta, Minna	see description in data abstract
76	Aulacomnium turgidum	A. turgidum		Väliranta, Minna	see description in data abstract
77	Bryophytes	Bryophytes		Väliranta, Minna	see description in data abstract
78	Calliergon megalophyllum	C. megalophyllum		Väliranta, Minna	see description in data abstract
79	Calliergon sp.	Calliergon sp.		Väliranta, Minna	see description in data abstract
80	Calliergon stramineum/Sarmentypnum sarmentosum	C. stramineum/S. sarmentosum		Väliranta, Minna	see description in data abstract
81	Cinclidium stygium	C. stygium		Väliranta, Minna	see description in data abstract
82	Climacium dendroides	C. dendroides		Väliranta, Minna	see description in data abstract
83	Cyperaceae, vegetative remains	Cyperaceae vegetative rem		Väliranta, Minna	see description in data abstract
84	Encalypta cf. rhaptocarpa var. leptodon	E. cf. rhaptocarpa var. leptodon		Väliranta, Minna	see description in data abstract
85	Equisetum, vegetative remains	Equisetum vegetative rem		Väliranta, Minna	see description in data abstract
86	Grimmia cf. hartmanii	G. cf. hartmanii		Väliranta, Minna	see description in data abstract
87	Mnium/Plagiomnium	Mnium/Plagiomnium		Väliranta, Minna	see description in data abstract
88	Nymphaea, vegetative remains	Nymphaea vegetative rem		Väliranta, Minna	see description in data abstract
89	Paludella squarrosa	P. squarrosa		Väliranta, Minna	see description in data abstract
90	Philonotis sp.	Philonotis sp.		Väliranta, Minna	see description in data abstract
91	Pohlia sp.	Pohlia sp.		Väliranta, Minna	see description in data abstract
92	Polytrichum jensenii	P. jensenii		Väliranta, Minna	see description in data abstract
93	Polytrichum sp.	Polytrichum sp.		Väliranta, Minna	see description in data abstract
94	Polytrichum strictum	P. strictum		Väliranta, Minna	see description in data abstract
95	Potamogeton berchtoldii-type, leaf remains	P. berchtoldii-type leaf rem		Väliranta, Minna	see description in data abstract
96	Potamogeton compressus, leaf remains	P. compressus leaf rem		Väliranta, Minna	see description in data abstract
97	Potamogeton, leaf remains	Potamogeton leaf rem		Väliranta, Minna	see description in data abstract
98	Potamogeton sp., leaf remains	Potamogeton sp. leaf rem		Väliranta, Minna	see description in data abstract
99	Scorpidium sp.	Scorpidium sp.		Väliranta, Minna	see description in data abstract
100	Tomentypnum nitens	T. nitens		Väliranta, Minna	see description in data abstract
101	Warnstorfia exannulata group	Warnstorfia exannulata gr		Väliranta, Minna	see description in data abstract

License:

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

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

9000 data points

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