Pub Date : 2023-07-12DOI: 10.30758/0555-2648-2023-69-2-206-227
О. Rudenko, Е. Taldenkova, H. Bauch, Ya. S. Оvsepyan
The palynological method was used to study a 455 cm thick marine sediment sequence, which overlies the Moscovian moraine in the Bychye-2 section on the Pyoza River (Arkhangel’sk region). The pollen records obtained allowed us to make a palynozonal subdivision of the section and to trace the plant cover transformations that occurred in the northeastern White Sea region during the Boreal transgression. When comparing the established local palynozones with the regional subdivisions of the reference sections Bychye-1, located 5 km upstream on the Pyoza River from the Bychye-2 site, and Peski on the Karelian Isthmus, we also employed the methods of correlation and event palynostratigraphy. It has been found that the marine sediments in the Bychye-2 section accumulated from the end of the Moscovian glaciation (~ 131 ka BP) until ~ 119,5 ka BP. The seven local palynozones established in the Bychye-2 section indicate a consistent change in climatic conditions and vegetational feedbacks. The main trend is the rapid displacement of Arctic-type shrub-herbaceous communities by pine-birch forests at the very beginning of the Mikulinian (Eemian) interglacial and the subsequent rise in the proportion of dark coniferous elements in the forests due to the growing humidity of the climate in the course of the transgression. A significant warming of the climate led to the emergence of thermophilic deciduous plants (oak, elm, hazel, and possibly even hornbeam) in the forests of the region. The predominance of pine-birch forests and the disappearance of all thermo- and hygrophilic elements of the vegetation followed the deterioration of climatic conditions during the final stage of the Mikulinian interglacial.
孢粉学方法用于研究Pyoza河(Arkhangel 'sk地区)Bychye-2段莫斯科冰碛上455 cm厚的海洋沉积物序列。获得的花粉记录使我们能够对剖面进行孢粉分区细分，并追溯了北纬海侵期间白海东北部地区发生的植物覆盖变化。将已建立的孢粉带与参考剖面Bychye-1(位于Pyoza河上游5 km处)和Peski(位于Karelian地峡)的区域细分进行比较时，我们还采用了对比和事件孢粉地层学方法。研究发现，白溪-2剖面的海相沉积物从莫斯科冰期结束(~ 131 ka BP)到~ 119.5 ka BP积累。在白溪2段建立的7个局部孢粉带表明了气候条件和植被反馈的一致变化。主要趋势是在mikulian (Eemian)间冰期初期，北极型灌木-草本群落被松桦林迅速取代，随后由于海侵过程中气候湿度的增加，深色针叶林元素在森林中的比例上升。气候的显著变暖导致该地区森林中出现了嗜热的落叶植物(橡树、榆树、榛子，甚至可能还有角木)。在米库良间冰期的最后阶段，气候条件的恶化导致了松桦林的优势和植被中所有亲热、亲水元素的消失。
{"title":"New data on the palynostratigraphy of the Mikulinian (Eemian) deposits in the lower reaches of the Pyoza River (northeastern White Sea region)","authors":"О. Rudenko, Е. Taldenkova, H. Bauch, Ya. S. Оvsepyan","doi":"10.30758/0555-2648-2023-69-2-206-227","DOIUrl":"https://doi.org/10.30758/0555-2648-2023-69-2-206-227","url":null,"abstract":"The palynological method was used to study a 455 cm thick marine sediment sequence, which overlies the Moscovian moraine in the Bychye-2 section on the Pyoza River (Arkhangel’sk region). The pollen records obtained allowed us to make a palynozonal subdivision of the section and to trace the plant cover transformations that occurred in the northeastern White Sea region during the Boreal transgression. When comparing the established local palynozones with the regional subdivisions of the reference sections Bychye-1, located 5 km upstream on the Pyoza River from the Bychye-2 site, and Peski on the Karelian Isthmus, we also employed the methods of correlation and event palynostratigraphy. It has been found that the marine sediments in the Bychye-2 section accumulated from the end of the Moscovian glaciation (~ 131 ka BP) until ~ 119,5 ka BP. The seven local palynozones established in the Bychye-2 section indicate a consistent change in climatic conditions and vegetational feedbacks. The main trend is the rapid displacement of Arctic-type shrub-herbaceous communities by pine-birch forests at the very beginning of the Mikulinian (Eemian) interglacial and the subsequent rise in the proportion of dark coniferous elements in the forests due to the growing humidity of the climate in the course of the transgression. A significant warming of the climate led to the emergence of thermophilic deciduous plants (oak, elm, hazel, and possibly even hornbeam) in the forests of the region. The predominance of pine-birch forests and the disappearance of all thermo- and hygrophilic elements of the vegetation followed the deterioration of climatic conditions during the final stage of the Mikulinian interglacial.","PeriodicalId":8391,"journal":{"name":"Arctic, Antarctic, and Alpine Research","volume":"45 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2023-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89924928","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-11DOI: 10.1080/15230430.2023.2223403
Francois Lapointe, M. Retelle, R. Bradley, W. Farnsworth, E. Støren, Timothy L. Cook, Josiane Rosario
{"title":"Multi-proxy evidence of unprecedented hydroclimatic change in a high Arctic proglacial lake: Linnévatnet, Svalbard","authors":"Francois Lapointe, M. Retelle, R. Bradley, W. Farnsworth, E. Støren, Timothy L. Cook, Josiane Rosario","doi":"10.1080/15230430.2023.2223403","DOIUrl":"https://doi.org/10.1080/15230430.2023.2223403","url":null,"abstract":"","PeriodicalId":8391,"journal":{"name":"Arctic, Antarctic, and Alpine Research","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2023-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43794489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-06DOI: 10.1080/15230430.2023.2220208
S. Kruse, I. Shevtsova, B. Heim, L. Pestryakova, Evgeniy S. Zakharov, U. Herzschuh
{"title":"Tundra conservation challenged by forest expansion in a complex mountainous treeline ecotone as revealed by spatially explicit tree aboveground biomass modeling","authors":"S. Kruse, I. Shevtsova, B. Heim, L. Pestryakova, Evgeniy S. Zakharov, U. Herzschuh","doi":"10.1080/15230430.2023.2220208","DOIUrl":"https://doi.org/10.1080/15230430.2023.2220208","url":null,"abstract":"","PeriodicalId":8391,"journal":{"name":"Arctic, Antarctic, and Alpine Research","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2023-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43212116","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-25DOI: 10.1080/15230430.2023.2209394
Jasmine JM Lamarre, A. Dhar, M. Naeth
{"title":"Arctic ecosystem restoration with native tundra bryophytes","authors":"Jasmine JM Lamarre, A. Dhar, M. Naeth","doi":"10.1080/15230430.2023.2209394","DOIUrl":"https://doi.org/10.1080/15230430.2023.2209394","url":null,"abstract":"","PeriodicalId":8391,"journal":{"name":"Arctic, Antarctic, and Alpine Research","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2023-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45400164","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-25DOI: 10.1080/15230430.2023.2209397
Peter Aartsma, A. Odland, S. Reinhardt, H. Renssen
Lichen heaths are decreasing in abundance in alpine and Arctic areas because of an increased competition with shrubs. This shift in vegetation might have important consequences for the soil temperature. The aim of this study is to find the drivers of the variation in soil temperature below lichen heaths and shrubs. Moreover, we want to gain more insight in the variability of the soil temperature below lichen heaths. We measured the soil temperature in thirty lichen plots and fifteen shrub plots in an alpine area in southern Norway during July and August 2019. We applied several treatments to study the drivers behind the variation in soil temperature between lichen heaths and shrub vegetation. We found that the average soil temperature was 1.45°C higher below lichen heaths than below shrub vegetation. Moreover, we measured a difference in soil temperature of 1.66°C between north-and south-facing lichen heaths, which contributes to the small-scale spatial variability in soil temperature below lichen heaths. Based on our experiments, we conclude that the buffering capacity of the litter layer below shrubs and shading of the soil by the shrub canopy lead to a lower soil temperature below shrubs compared to lichen heaths during the summer.
{"title":"Drivers of soil temperature variation in alpine lichen heaths and shrub vegetation during the summer","authors":"Peter Aartsma, A. Odland, S. Reinhardt, H. Renssen","doi":"10.1080/15230430.2023.2209397","DOIUrl":"https://doi.org/10.1080/15230430.2023.2209397","url":null,"abstract":"Lichen heaths are decreasing in abundance in alpine and Arctic areas because of an increased competition with shrubs. This shift in vegetation might have important consequences for the soil temperature. The aim of this study is to find the drivers of the variation in soil temperature below lichen heaths and shrubs. Moreover, we want to gain more insight in the variability of the soil temperature below lichen heaths. We measured the soil temperature in thirty lichen plots and fifteen shrub plots in an alpine area in southern Norway during July and August 2019. We applied several treatments to study the drivers behind the variation in soil temperature between lichen heaths and shrub vegetation. We found that the average soil temperature was 1.45°C higher below lichen heaths than below shrub vegetation. Moreover, we measured a difference in soil temperature of 1.66°C between north-and south-facing lichen heaths, which contributes to the small-scale spatial variability in soil temperature below lichen heaths. Based on our experiments, we conclude that the buffering capacity of the litter layer below shrubs and shading of the soil by the shrub canopy lead to a lower soil temperature below shrubs compared to lichen heaths during the summer.","PeriodicalId":8391,"journal":{"name":"Arctic, Antarctic, and Alpine Research","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2023-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44936829","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-11DOI: 10.1080/15230430.2023.2203478
Merin Reji Chacko, Jacqueline Oehri, E. Plekhanova, G. Schaepman‐Strub
{"title":"Will current protected areas harbor refugia for threatened Arctic vegetation types until 2050? A first assessment","authors":"Merin Reji Chacko, Jacqueline Oehri, E. Plekhanova, G. Schaepman‐Strub","doi":"10.1080/15230430.2023.2203478","DOIUrl":"https://doi.org/10.1080/15230430.2023.2203478","url":null,"abstract":"","PeriodicalId":8391,"journal":{"name":"Arctic, Antarctic, and Alpine Research","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2023-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42188206","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-02DOI: 10.1080/15230430.2023.2195518
B. Jones, Susan Schaeffer Tessier, T. Tessier, M. Brubaker, M. Brook, Jackie Schaeffer, M. W. Ward Jones, G. Grosse, Ingmar Nitze, Tabea Rettelbach, Sebastian Zavoico, Jason A. Clark, K. Tape
{"title":"Integrating local environmental observations and remote sensing to better understand the life cycle of a thermokarst lake in Arctic Alaska","authors":"B. Jones, Susan Schaeffer Tessier, T. Tessier, M. Brubaker, M. Brook, Jackie Schaeffer, M. W. Ward Jones, G. Grosse, Ingmar Nitze, Tabea Rettelbach, Sebastian Zavoico, Jason A. Clark, K. Tape","doi":"10.1080/15230430.2023.2195518","DOIUrl":"https://doi.org/10.1080/15230430.2023.2195518","url":null,"abstract":"","PeriodicalId":8391,"journal":{"name":"Arctic, Antarctic, and Alpine Research","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2023-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48910130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-24DOI: 10.1080/15230430.2023.2194492
Jérémy Grenier, N. Bhiry, A. Decaulne
{"title":"Meteorological conditions and snow-avalanche occurrence over three snow seasons (2017–2020) in Tasiapik Valley, Umiujaq, Nunavik","authors":"Jérémy Grenier, N. Bhiry, A. Decaulne","doi":"10.1080/15230430.2023.2194492","DOIUrl":"https://doi.org/10.1080/15230430.2023.2194492","url":null,"abstract":"","PeriodicalId":8391,"journal":{"name":"Arctic, Antarctic, and Alpine Research","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2023-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47870767","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-05DOI: 10.1080/15230430.2023.2190057
U. Prokhorova, A. Terekhov, B. Ivanov, V. Demidov
{"title":"Heat balance of a low-elevated Svalbard glacier during the ablation season: A case study of Aldegondabreen","authors":"U. Prokhorova, A. Terekhov, B. Ivanov, V. Demidov","doi":"10.1080/15230430.2023.2190057","DOIUrl":"https://doi.org/10.1080/15230430.2023.2190057","url":null,"abstract":"","PeriodicalId":8391,"journal":{"name":"Arctic, Antarctic, and Alpine Research","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2023-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44829686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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