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Kienast, Frank; Schirrmeister, Lutz (2017): Plant macrofossil records from permafrost deposits of the Bol'shoy Lyakhovsky Island (New Siberian Archipelago). PANGAEA, https://doi.org/10.1594/PANGAEA.882619, Supplement to: Kienast, Frank; Tarasov, Pavel E; Schirrmeister, Lutz; Grosse, Guido; Andreev, Andrei A (2008): Continental climate in the East Siberian Arctic during the last interglacial: Implications from palaeobotanical records. Global and Planetary Change, 60(3-4), 535-562, https://doi.org/10.1016/j.gloplacha.2007.07.004

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Abstract:
To evaluate the consequences of possible future climate changes and to identify the main climate drivers in high latitudes, the vegetation and climate in the East Siberian Arctic during the last interglacial are reconstructed and compared with Holocene conditions. Plant macrofossils from permafrost deposits on Bol'shoy Lyakhovsky Island, New Siberian Archipelago, in the Russian Arctic revealed the existence of a shrubland dominated by Duschekia fruticosa, Betula nana and Ledum palustre and interspersed with lakes and grasslands during the last interglacial. The reconstructed vegetation differs fundamentally from the high arctic tundra that exists in this region today, but resembles an open variant of subarctic shrub tundra as occurring near the tree line about 350 km southwest of the study site. Such difference in the plant cover implies that, during the last interglacial, the mean summer temperature was considerably higher, the growing season was longer, and soils outside the range of thermokarst depressions were drier than today. Our pollen-based climatic reconstruction suggests a mean temperature of the warmest month (MTWA) range of 9-14.5 °C during the warmest interval of the last interglacial. The reconstruction from plant macrofossils, representing more local environments, reached MTWA values above 12.5 °C in contrast to today's 2.8 °C. We explain this contrast in summer temperature and soil moisture with a combination of summer insolation higher than present and climatic continentality in arctic Yakutia stronger than present as result of a considerably less inundated Laptev Shelf during the last interglacial.
Coverage:
Median Latitude: 73.334917 * Median Longitude: 141.321450 * South-bound Latitude: 73.323000 * West-bound Longitude: 141.263000 * North-bound Latitude: 73.346000 * East-bound Longitude: 141.387000
Minimum ELEVATION: 1.00 m a.s.l. * Maximum ELEVATION: 6.85 m a.s.l.
Event(s):
Lya_1999_L11 * Latitude: 73.323000 * Longitude: 141.387000 * Location: Lyakhovsky Islands * Campaign: Lya_1999 * Basis: Sampling on land * Device: Multiple investigations (MULT) * Comment: horizontal distance from the Zimov'e River mouth in 1999: 1100 m E
Lya_1999_R17 * Latitude: 73.336600 * Longitude: 141.309800 * Location: Lyakhovsky Islands * Campaign: Lya_1999 * Basis: Sampling on land * Device: Multiple investigations (MULT) * Comment: horizontal distance from the Zimov'e River mouth in 1999: 1700 m W
Lya_1999_R22 * Latitude: 73.339000 * Longitude: 141.297000 * Location: Lyakhovsky Islands * Campaign: Lya_1999 * Basis: Sampling on land * Device: Multiple investigations (MULT) * Comment: horizontal distance from the Zimov'e River mouth in 1999: 2200 m W
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1Event labelEventKienast, Frank
2Latitude of eventLatitudeKienast, Frank
3Longitude of eventLongitudeKienast, Frank
4ELEVATIONElevationm a.s.l.Kienast, FrankGeocode
5Area/localityAreaKienast, Frank
6Sample IDSample IDKienast, Frank
7Agrostis sp.Agrostis sp.#Kienast, Frank
8Alnus fruticosaAln.f#Kienast, Frank
9Alopecurus sp.Alopecurus sp.#Kienast, Frank
10Alyssum biovulatumA. biovulatum#Kienast, Frank
11Androsace septentrionalisA. septentrionalis#Kienast, Frank
12Artemisia sp.Artemisia sp.#Kienast, Frank
13Asteraceae sp.Asteraceae sp.#Kienast, Frank
14Batrachium sp.Batrachium sp.#Kienast, Frank
15Betula fruticosaBet.r#Kienast, Frank
16Betula nanaBet.n#Kienast, Franks.l.
17Betula sp.Betula sp.#Kienast, Frank
18BetulaceaeBetaea#Kienast, Frank
19Boschniakia rossicaB. rossica#Kienast, Frank
20Brassicaceae sp.Brassicaceae sp.#Kienast, Frank
21Calamagrostis sp.Calamagrostis sp.#Kienast, Frank
22Callitriche hermaphroditicaC. hermaphroditica#Kienast, Frank
23Caltha palustrisCat.p#Kienast, Frank
24Carex aquatilisC. aquatilis#Kienast, Frank
25Carex cf. sect. TemnemisC. cf. sect. Temnemis#Kienast, Frank
26Carex duriusculaC. duriuscula#Kienast, Frank
27Carex sect. PhacocystisCarex sect. Phacocystis#Kienast, Frank
28Carex sp.Carex sp.#Kienast, Frank
29Carex supinaC. supina#Kienast, Franks.l.
30Caryophyllaceae sp.Caryophyllaceae sp.#Kienast, Frank
31Cerastium beeringianumC. beeringianum#Kienast, Frank
32Cerastium cf. regeliiC. cf. regelii#Kienast, Frank
33Cerastium jenissejenseC. jenissejense#Kienast, Frank
34cf. Corydalis sp.cf. Corydalis sp.#Kienast, Frank
35cf. Lesquerella arcticacf. L. arctica#Kienast, Frank
36cf. Saxifraga hieracifoliacf. S. hieracifolia#Kienast, Frank
37Chara sp.Chara sp.#Kienast, Frank
38Chenopodiaceae sp.Chenopodiaceae sp.#Kienast, Frank
39Chenopodium sp.Chenopodium sp.#Kienast, Frank
40Chrysosplenium alternifoliumC. alternifolium#Kienast, Frank
41Comarum palustreCom.p#Kienast, Frank
42Cyperaceae sp.Cyperaceae sp.#Kienast, Frank
43Deschampsia sp.Deschampsia sp.#Kienast, Frank
44Descurainia sophioidesD. sophioides#Kienast, Frank
45Draba sp.Draba sp.#Kienast, Frank
46Dryas octopetalaDry.o#Kienast, Franks.l.
47Empetrum nigrumEmp.n#Kienast, Franks.l.
48Epilobium davuricumE. davuricum#Kienast, Frank
49Epilobium palustreE. palustre#Kienast, Frank
50Eriophorum angustifoliumE. angustifolium#Kienast, Frank
51Eriophorum brachyantherumE. brachyantherum#Kienast, Frank
52Eriophorum cf. gracileE. cf. gracile#Kienast, Frank
53Eriophorum scheuchzeriErio.s#Kienast, Frank
54Eriophorum sp.Eriophorum sp.#Kienast, Frank
55Eutrema edwardsiiE. edwardsii#Kienast, Frank
56Fabaceae sp.Fabaceae sp.#Kienast, Frank
57Festuca sp.Festuca sp.#Kienast, Frank
58Gastrolychnis involucrataG. involucrata#Kienast, Franks.l.
59Gastrolychnis violascensG. violascens#Kienast, Franks.l.
60Hippuris vulgarisHip.v#Kienast, Franks.l.
61Juncus castanaeusJ. castanaeus#Kienast, Frank
62Kobresia bellardiiK. bellardii#Kienast, Frank
63Ledum palustre ssp. decumbensL. palustre ssp. decumbens#Kienast, Frank
64Lloydia serotinaLlo.s#Kienast, Frank
65Luzula cf.wahlenbergiiL. cf.wahlenbergii#Kienast, Frank
66Luzula confusaL. confusa#Kienast, Frank
67Menyanthes trifoliataMey.t#Kienast, Frank
68Minuartia arcticaM. arctica#Kienast, Frank
69Minuartia rubellaM. rubella#Kienast, Frank
70Moehringia laterifoliaM. laterifolia#Kienast, Frank
71Myosotis sp.Myosotis sp.#Kienast, Frank
72Myriophyllum spicatumMyo.s#Kienast, Frank
73Oxycoccus microcarpusO. microcarpus#Kienast, Frank
74Oxyria digynaOxy.d#Kienast, Frank
75Papaver sect. ScapifloraPapaver sect. Scapiflora#Kienast, Frank
76Parnassia palustrisPar.p#Kienast, Frank
77Poa sp.Poa sp.#Kienast, Frank
78Poaceae sp.Poaceae sp.#Kienast, Frank
79Potamogeton sp.Potamogeton sp.#Kienast, Frank
80Polygonum viviparumPol.v#Kienast, Frank
81Potamogeton vaginatusP. vaginatus#Kienast, Frank
82Potentilla arenosaP. arenosa#Kienast, Frank
83Potentilla hyparcticaP. hyparctica#Kienast, Frank
84Potentilla niveaP. nivea#Kienast, Frank
85Potentilla sp.Potentilla sp.#Kienast, Frank
86Potentilla stipularisP. stipularis#Kienast, Frank
87Primulaceae sp.Primulaceae sp.#Kienast, Frank
88Puccinelia sp.Puccinelia sp.#Kienast, Frank
89Puccinellia distansP. distans#Kienast, Franks.l.
90Ranunculus borealisR. borealis#Kienast, Frank
91Ranunculus cf. pygmaeusR. cf. pygmaeus#Kienast, Frank
92Ranunculus hyperboreusR. hyperboreus#Kienast, Frank
93Ranunculus lapponicusR. lapponicus#Kienast, Frank
94Ranunculus cf. reptansR. cf. reptans#Kienast, Frankincluding R. gmelinii
95Ranunculus turneriR. turneri#Kienast, Frankincluding R. repens
96Rhododendron sp.Rhododendron sp.#Kienast, Frank
97Rorippa palustrisR. palustris#Kienast, Frank
98Rumex arcticusR. arcticus#Kienast, Frank
99Rumex maritimusR. maritimus#Kienast, Frank
100Rumex subgen. acetosellaR. subg. acetosella#Kienast, Frank
101Sagina nivalisS. nivalis#Kienast, Frank
102SalicaceaeSalicaceae#Kienast, Frank
103Salix sp.Salix sp.#Kienast, Frank
104Sparganium hyperboreusS. hyperboreus#Kienast, Frank
105Sparganium minimumSparganium min#Kienast, Frank
106Stellaria crassifoliaS. crassifolia#Kienast, Frank
107Stellaria sp.Stellaria sp.#Kienast, Frank
108Taraxacum cf. ceratophorumT. cf. ceratophorum#Kienast, Frank
109Tephroseris palustrisT. palustris#Kienast, Frank
110Thymus sp.Thymus sp.#Kienast, Frank
111Tripleurospermum hookeriT. hookeri#Kienast, Frank
112Vaccinium vitis-idaeaV. vitis-idaea#Kienast, Frank
Size:
2160 data points

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