scholarly journals Summer temperature evolution on the Kamchatka Peninsula, Russian Far East, during the past 20 000 years

2017 ◽  
Vol 13 (4) ◽  
pp. 359-377 ◽  
Author(s):  
Vera D. Meyer ◽  
Jens Hefter ◽  
Gerrit Lohmann ◽  
Lars Max ◽  
Ralf Tiedemann ◽  
...  
Keyword(s):  
Russian Far East ◽  
Far East ◽  
Kamchatka Peninsula ◽  
Summer Temperature ◽  
Northwest Pacific ◽  
Temperature Record ◽  
Pressure System ◽  
Last Glacial ◽  
The Past ◽  
The Last Glacial

Abstract. Little is known about the climate evolution on the Kamchatka Peninsula during the last glacial–interglacial transition as existing climate records do not reach beyond 12 ka BP. In this study, a summer temperature record for the past 20 kyr is presented. Branched glycerol dialkyl glycerol tetraethers, terrigenous biomarkers suitable for continental air temperature reconstructions, were analyzed in a sediment core from the western continental margin off Kamchatka in the marginal northwest Pacific (NW Pacific). The record suggests that summer temperatures on Kamchatka during the Last Glacial Maximum (LGM) equaled modern temperatures. We suggest that strong southerly winds associated with a pronounced North Pacific High pressure system over the subarctic NW Pacific accounted for the warm conditions. A comparison with an Earth system model reveals discrepancies between model and proxy-based reconstructions for the LGM temperature and atmospheric circulation in the NW Pacific realm. The deglacial temperature development is characterized by abrupt millennial-scale temperature oscillations. The Bølling–Allerød warm phase and the Younger Dryas cold spell are pronounced events, suggesting a connection to North Atlantic climate variability.

scholarly journals Summer-temperature evolution on the Kamchatka Peninsula, Russian Far East, during the past 20,000 years

2016 ◽  
Author(s):  
Vera D. Meyer ◽  
Jens Hefter ◽  
Gerrit Lohmann ◽  
Ralf Tiedemann ◽  
Gesine Mollenhauer
Keyword(s):  
North Atlantic ◽  
Russian Far East ◽  
Far East ◽  
Kamchatka Peninsula ◽  
Summer Temperature ◽  
Northwest Pacific ◽  
Temperature Record ◽  
Strong Impact ◽  
The Past ◽  
Temperature Development

Abstract. Little is known about the climate evolution on the Kamchatka Peninsula during the last deglaciation as existing climate records do not reach beyond 12 ka BP. In this study, a summer-temperature record for the past 20 ka is presented. Branched Glycerol Dialkyl Glycerol Tetraethers, terrigenous biomarkers suitable for continental air temperature reconstructions, were analyzed in a sediment core from the western continental margin off Kamchatka/marginal Northwest Pacific (NW Pacific). The record reveals that summer temperatures on Kamchatka during the Last Glacial Maximum (LGM) equaled modern. We suggest that strong southerly winds associated with a pronounced North Pacific High pressure system over the subarctic NW Pacific accounted for the warm conditions. A comparison with outputs from an Earth System Model reveals discrepancies between model and proxy-based reconstructions for the LGM-temperature and atmospheric circulation in the NW Pacific realm. The deglacial temperature development is characterized by abrupt millennial-scale temperature oscillations. The Bølling/Allerød warm-phase and the Younger Dryas cold-spell are pronounced events, providing evidence for a strong impact of North-Atlantic climate variability on temperature development in southeastern Siberia. Summer insolation and teleconnections with the North Atlantic determine the long-term temperature development during the Holocene.

Reconstructions of the past distribution of Testudo graeca mitochondrial lineages in the Middle East and Transcaucasia support multiple refugia since the Last Glacial Maximum

2021 ◽  
pp. 10-17
Author(s):  
Oguz Turkozan
Keyword(s):  
Middle East ◽  
Last Glacial Maximum ◽  
Glacial Maximum ◽  
Testudo Graeca ◽  
Last Glacial ◽  
The Past ◽  
Precipitation Seasonality ◽  
Multiple Refugia ◽  
The Last Glacial Maximum ◽  
The Last Glacial

A cycle of glacial and interglacial periods in the Quaternary caused species’ ranges to expand and contract in response to climatic and environmental changes. During interglacial periods, many species expanded their distribution ranges from refugia into higher elevations and latitudes. In the present work, we projected the responses of the five lineages of Testudo graeca in the Middle East and Transcaucasia as the climate shifted from the Last Glacial Maximum (LGM, Mid – Holocene), to the present. Under the past LGM and Mid-Holocene bioclimatic conditions, models predicted relatively more suitable habitats for some of the lineages. The most significant bioclimatic variables in predicting the present and past potential distribution of clades are the precipitation of the warmest quarter for T. g. armeniaca (95.8 %), precipitation seasonality for T. g. buxtoni (85.0 %), minimum temperature of the coldest month for T. g. ibera (75.4 %), precipitation of the coldest quarter for T. g. terrestris (34.1 %), and the mean temperature of the driest quarter for T. g. zarudyni (88.8 %). Since the LGM, we hypothesise that the ranges of lineages have either expanded (T. g. ibera), contracted (T. g. zarudnyi) or remained stable (T. g. terrestris), and for other two taxa (T. g. armeniaca and T. g. buxtoni) the pattern remains unclear. Our analysis predicts multiple refugia for Testudo during the LGM and supports previous hypotheses about high lineage richness in Anatolia resulting from secondary contact.

The first lichenological survey in Koryakia (Northern Kamchatka, Russia) — the last unexplored part of Beringia

2019 ◽  
Vol 53 (1) ◽  
pp. 107-142 ◽  
Author(s):  
D. E. Himelbrant ◽  
I. S. Stepanchikova ◽  
T. Ahti ◽  
V. Yu. Neshataeva
Keyword(s):  
East Asia ◽  
Russian Far East ◽  
Far East ◽  
Kamchatka Peninsula ◽  
Lichen Diversity ◽  
Magadan Region ◽  
Specific Species ◽  
First Time ◽  
Lichen Flora

The first lichenological inventory in Koryakia has resulted in the list of 315 species reported from Parapolsky Dale, within and in vicinities of the Koryak State Reserve. Altogether 46 species are published from the Kamchatka Territory for the first time, including Lecanographa grumulosa new to Russia, East Asia and Beringia; Cercidospora trypetheliza, Lecania dubitans, Pertusaria borealis, Piccolia ochrophora, Protoparmelia cupreobadia, Rimularia badioatra and Strangospora moriformis new to Russian Far East; Abrothallus bertianus, Cladonia strepsilis, Physciella melanchra, Rimularia badioatra, Sclerococcum parasiticum, Sphinctrina leucopoda and Strangospora moriformis new to Beringia. The lichen diversity of the study area is relatively poor due to natural reasons. Comparison with neighboring regions (Kamchatka Peninsula, Chukotka, Magadan Region, Yakutia and Alaska) shows that the lichen flora of Parapolsky Dale contains almost no specific species. The majority of the species recorded here are also known from neighboring regions, especially Alaska and Kamchatka Peninsula.

To the lichen flora of the Kamchatian fir grove (Kronotsky Nature Reserve)

2011 ◽  
Vol 45 ◽  
pp. 150-158 ◽  
Author(s):  
D. E. Himelbrant ◽  
I. S. Stepanchikova
Keyword(s):  
Nature Reserve ◽  
Russian Far East ◽  
Far East ◽  
Kamchatka Peninsula ◽  
Herbarium Specimens ◽  
State Nature Reserve ◽  
Kronotsky Nature Reserve ◽  
State Nature ◽  
The Russian Far East ◽  
Lichen Flora

The fir (Abies gracilis) grove (Kamchatka Peninsula, Kronotsky State Nature Reserve) is a unique area for the northern part of the Russian Far East. As a result of revision of herbarium specimens and literature data a list of lichens of the fir grove was compiled, comprising 55 species. Of them, 27 species are new to the Kronotsky Reserve, 30 are firstly reported for the grove. Altogether 36 lichen epiphytes of Abies gracilis are known.

scholarly journals Climate Response of Larch and Birch Forests across an Elevational Transect and Hemisphere-Wide Comparisons, Kamchatka Peninsula, Russian Far East

Forests ◽  
2017 ◽  
Vol 8 (9) ◽  
pp. 315 ◽  
Author(s):  
Clara Deck ◽  
Gregory Wiles ◽  
Sarah Frederick ◽  
Vladimir Matsovsky ◽  
Tatiana Kuderina ◽  
...  
Keyword(s):  
Russian Far East ◽  
Far East ◽  
Kamchatka Peninsula ◽  
Climate Response ◽  
Elevational Transect ◽  
Birch Forests

Late Quaternary Paleotemperatures Derived from a Speleothem from Cango Caves, Cape Province, South Africa

1992 ◽  
Vol 37 (2) ◽  
pp. 203-213 ◽  
Author(s):  
A.S. Talma ◽  
John C. Vogel
Keyword(s):  
South Africa ◽  
Isotopic Composition ◽  
Late Quaternary ◽  
Carbon Isotopic Composition ◽  
Temperature Record ◽  
The Past ◽  
Carbon Isotopic ◽  
Groundwater Aquifer ◽  
Combining Data ◽  
The Last Glacial

AbstractAn oxygen isotope temperature record over a large part of the past 30,000 yr has been obtained for the southern Cape Province of South Africa by combining data on the isotopic composition of a stalagmite from a deep cave with that of a confined groundwater aquifer in the same region. Results show that temperatures during the last glacial maximum were on average about 6°C lower than those today, with peaks up to 7°C lower. A detailed analysis of the past 5000 yr suggests multiple fluctuations, with generally lower temperatures (1–2°C) around 4500 and 3000 yr B.P. The carbon isotopic composition of the stalagmite indicates significant vegetation changes between the late Pleistocene and today, and also during the second half of the Holocene.

Neovochthonius nom. nov. pro Neochthonius Karppinen (Acari, Oribatei, Protoplophoroidea, Heterochthoniidae)

Zootaxa ◽  
2009 ◽  
Vol 1992 (1) ◽  
pp. 68
Author(s):  
MARK L. I. JUDSON
Keyword(s):  
Russian Far East ◽  
Far East ◽  
Single Species ◽  
Sakhalin Island ◽  
Junior Synonym ◽  
Related Genus ◽  
The Past ◽  
Valid Genus

The oribatid genus Neochthonius Karppinen in Golosova & Karppinen, 1984 was erected for a single species of Heterochthoniidae, Neochthonius latisetosus Golosova & Karppinen, 1984, from Sakhalin Island, Russian Far East (Golosova & Karppinen 1984). As noted by Judson (1995), this name is preoccupied by the pseudoscorpion genus Neochthonius Chamberlin, 1929. Although sometimes treated as a synonym of Kewochthonius Chamberlin, 1929 [now a junior synonym of Chthonius C. L. Koch, 1843] in the past, Neochthonius Chamberlin is currently considered to be a valid genus, containing four species from California, U.S.A. (Judson 1990; Muchmore 1996). Despite repeated letters to Dr Karppinen (the first sent in 1991), advising him that Neochthonius Karppinen was preoccupied, no replacement name has been published and I am informed that he has now given up all zoological activity (R. Penttinen, in litt.). In order to remove this homonymy, Neochthonius Karppinen, 1984 is here replaced with Neovochthonius nom. nov. (etymology: Latin prefix ne-, meaning ‘not’, added to the name of the related genus Ovochthonius; gender masculine). Neochthonius latisetosus Golosova & Karppinen, 1984 therefore becomes Neovochthonius latisetosus (Golosova & Karppinen, 1984) comb. nov. No other species have been assigned to this genus.

Climatic Record of the Past 130,000 Years in North Atlantic Deep-Sea Core V23-82: Correlation with the Terrestrial Record

1973 ◽  
Vol 3 (1) ◽  
pp. 110-116 ◽  
Author(s):  
Constance Sancetta ◽  
John Imbrie ◽  
N.G. Kipp
Keyword(s):  
North Atlantic ◽  
Deep Sea ◽  
Planktonic Foraminifera ◽  
Linear Interpolation ◽  
Stratigraphic Correlation ◽  
Last Glacial ◽  
The Past ◽  
The North ◽  
The North Atlantic ◽  
The Last Glacial

AbstractQuantitative paleo-environmental analyses of planktonic foraminifera in 182 samples covering the past 130,000 years in North Atlantic deep-sea core V23-82 yield time series interpreted in terms of changing surface-water conditions. An absolute chronology is estimated by linear interpolation between levels dated by 14C or by stratigraphic correlation with other radiometrically dated climatic records. Significant events include: (1) rapid warming at 127,000 YBP, marking the start of the penultimate North Atlantic and European interglacial; (2) 124,000 YBP temperature maximum (Eemian); (3) 109,000 YBP cooling, correlated with the beginning of the last European glaciation (Würm), and representing a temporary cooling of the North Atlantic; (4) severe cooling 73,000 YBP, marking the start of the last full glacial regime in the North Atlantic; (5) short warm intervals within the last glacial regime dated at 59,000 YBP, 48,000 YBP, and 31,000 YBP; (6) rapid termination of the last glacial interval at 11,000 YBP; (7) a 6000 YBP hypsi-saline, followed by lowering salinity values presumably associated with decreasing flux of Gulf Stream waters over the core site.

scholarly journals Mosses of the Bystrinsky Nature Park (Kamchatka Peninsula, Russian Far East)

Arctoa ◽  
2008 ◽  
Vol 17 (1) ◽  
pp. 49-62 ◽  
Author(s):  
Irina V. Czernyadjeva ◽  
Elena A. Ignatova
Keyword(s):  
Russian Far East ◽  
Far East ◽  
Kamchatka Peninsula ◽  
Nature Park
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