scholarly journals Carbon response of tundra ecosystems to advancing greenup and snowmelt in Alaska

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
JiHyun Kim ◽  
Yeonjoo Kim ◽  
Donatella Zona ◽  
Walter Oechel ◽  
Sang-Jong Park ◽  
...  

AbstractThe ongoing disproportionate increases in temperature and precipitation over the Arctic region may greatly alter the latitudinal gradients in greenup and snowmelt timings as well as associated carbon dynamics of tundra ecosystems. Here we use remotely-sensed and ground-based datasets and model results embedding snowmelt timing in phenology at seven tundra flux tower sites in Alaska during 2001–2018, showing that the carbon response to early greenup or delayed snowmelt varies greatly depending upon local climatic limits. Increases in net ecosystem productivity (NEP) due to early greenup were amplified at the higher latitudes where temperature and water strongly colimit vegetation growth, while NEP decreases due to delayed snowmelt were alleviated by a relief of water stress. Given the high likelihood of more frequent delayed snowmelt at higher latitudes, this study highlights the importance of understanding the role of snowmelt timing in vegetation growth and terrestrial carbon cycles across warming Arctic ecosystems.

2020 ◽  
Vol 12 (4) ◽  
pp. 1431 ◽  
Author(s):  
Kaarina Määttä ◽  
Sanna Hyvärinen ◽  
Tanja Äärelä ◽  
Satu Uusiautti

The Arctic region faces many threats but also opportunities due to economic, climate, environmental, cultural, social, professional, educational, and institutional changes, which also necessitate new perspectives on sustainable education. When implementing sustainable education in the Arctic, it is important to increase knowledge and understanding of the special features of Arctic areas—their opportunities and vulnerabilities. In this article, the model of Arctic sustainable education (ASE) has been introduced. It is based on a new kind of lifestyle that illustrates respectful and responsible attitudes toward other people and nature. What are the special features of the teaching and learning of ASE and how to organize it? In this theoretical article, we have discussed the challenges and goals, and possibilities and significance of ASE by leaning on the five cornerstones, concerning learning and teaching of SE in schools and organizations: why, what, how, who, and when. The ASE may provide new ideas to develop sustainable education not just in the Arctic region but also elsewhere as it gets its special opportunities and expectations in a context- and time-bound manner. In conclusion, the role of educational psychology in ASE has been viewed and discussed.


Author(s):  
O.S. Reshetnyak

The methodological approaches and the results of assessing the environmental risk level in river ecosystems of the Arctic region of Russia was presented. Assessing of the environmental risk level in ecosystem includes identifying possible negative consequences of anthropogenic impact, which are appeared in a violation of the structural organization of biocenoses. An intensification of the ecological devolution of individual communities of aquatic organisms is observed in modern conditions of anthropogenic impact and climatic variations in the Arctic ecosystems of rivers. The tendency to increase the ecological devolution level as the anthropogenic impact intensifies during the transition from less polluted Arctic rivers to more polluted ones (dirty) has been revealed. The ecological devolution level varies from absence (anthropogenic stress) to its appearance in the form of elements of ecological devolution. The results of the final assessment of the environmental risk level in the ecosystems of the Arctic region of Russia according to the ecological devolution level showed that the studied sections of the rivers are characterized by a low and medium level of risk. Further enhancement of anthropogenic impact on the catchments of Arctic rivers can lead to disruption of the ecological state of aquatic ecosystems and intensification of ecological devolutions processes which may increase the level of environmental risk.


2018 ◽  
Vol 7 (3.15) ◽  
pp. 253
Author(s):  
Olga Nikolaevna Ivanishcheva ◽  
Anasstasija Vjacheslavovna Koreneva ◽  
Alexandra Vjacheslavovna Burtseva ◽  
Tatjana Alexandrovna Rychkova

The article aims to analyze the functioning of the Russian language within the ethnic space of the Murmansk Region. The analysis of the state statistical and archive documents for the Murmansk Region has shown that the Russian language has dominated within the region since at least the 18th century, and this had its obvious economic and communicative advantages, in particular, in education. The Saami, the indigenous small-numbered people of the Murmansk Region, understood and mastered the conversational Russian language since the 18th century. The Russian language dominates within the current polyethnic linguistic environment of the Murmansk Region due to the numerical superiority of the Russians in the region, as well as due to its position as the language of the dominant ethnic group. 


2020 ◽  
Vol 7 (3) ◽  
pp. 276-287
Author(s):  
I. S. Doroshenko

Due to climate change, the Arctic region becomes a place of geopolitical rivalry of both Arctic and non-Arctic states. Traditional formats for determining the agenda in the region are effective, but with the advent of the interest of an increasing number of international actors, these formats are transforming, which may affect the balance of power in the region. The growing activity of Asian countries in the Arctic, primarily China, is forcing regional states to make adjustments to the development strategy of the region. The rapid renewal of its potential in the northern territories of Russia caused a negative reaction from the western countries, especially after 2014.Such aspirations have emerged as the internationalization of the region by Northern Europe and China, the desire to draw clear boundaries on the part of Russia and Canada, and the buildup of US influence on its colleagues in the North Atlantic bloc. This situation may cause an uncontrolled increase in tension in the region, especially if new alliances between the Arctic and non-Arctic countries are created. The author considers the current approaches of the countries of the Arctic five, analyzes the true motives of internationalization and the role of the format of the Arctic five in maintaining a balance of power and stability in the northern latitudes.


2021 ◽  
Author(s):  
A.V. Lemeshchenko ◽  
A.E. Kim

The results of content analysis of the role of polymorphism of the ACE gene genotype (RS4646994) in persons employed in the Arctic region are presented. It has been shown that it can be recommended as a universal marker in the diagnosis of not only essential hypertension, but other diseases of the cardiovascular system. In order to reduce the risk of developing pathological conditions, when planning official activities in the Arctic region, it is advisable to build professional selection, taking into account not only their genetic predisposition, but also the body's ability to maintain homeostasis. Key words: Arctic, polymorphism, ACE gene (RS4646994), arterial hypertension, homeostasis.


2019 ◽  
Vol 21 (3) ◽  
pp. 4-15
Author(s):  
S V Dolgikh ◽  
G N Ponomarenko ◽  
L L Bobrov ◽  
V N Ishchuk ◽  
A V Merzlikin

The analysis and results of the generalization of domestic scientific research on the issues of service activities of military personnel and civilians in the Arctic are given. The problems of the organization of the protection of the health of servicemen serving in the Arctic region are shown. It has been established that military personnel performing combat training tasks in the Arctic zone of Russia mainly (more than 95% of cases) have the following types of psychophysical and neurotic disadaptosis - somatoform dysfunction of the autonomic nervous system, overwork, restrictions on activity caused by a decrease or disability. The role of medical and psychological rehabilitation as one of the effective methods for the prevention and treatment of maladaptive disorders in the military has been shown. Methodical approaches to the organization of medical and psychological rehabilitation of servicemen performing training and combat tasks in the Arctic zone of Russia, in particular, recommendations on the use of corrective methods in accordance with the clinical characteristics of syndromes are proposed.


2021 ◽  
Author(s):  
Suzanne L. Gray ◽  
Kevin Hodges ◽  
Jonathan Vautrey ◽  
John Methven

<p>Human activity in the Arctic is expected to increase as new regions become accessible, with a consequent need for reliable forecasts of hazardous weather. Arctic cyclones are synoptic-scale cyclones developing within or moving into the Arctic region. Meso- to synoptic-scale tropopause-based coherent vortices called tropopause polar vortices (TPVs) are frequently observed in polar regions and are a proposed mechanism for Arctic cyclone genesis and intensification. While the importance of pre-existing tropopause-level features for cyclone development, and their existence as part of the three-dimensional mature cyclone structure, is well established in the mid-latitudes, evidence of the importance of pre-existing TPVs for Arctic cyclone development is more limited. Here we present a climatology and characteristics of summer Arctic cyclones and TPVs, produced by tracking them in the latest global ECMWF reanalysis (ERA5), and determine the role of pre-existing TPVs in the initiation and intensification of these cyclones.</p>


2019 ◽  
Vol 11 (4) ◽  
pp. 5-13 ◽  
Author(s):  
Yuriy N. Golubchikov ◽  
Victor I. Kruzhalin ◽  
Aleksandra D. Nikanorova

Tourism is the key factor of human presence in the Arctic region. The number of tourist visits has been growing extensively since the end of XX century. The Arctic region is not regarded only as prospective region for oil and gas industry but now it is also recognized as the region with high potential for tourism development. The research is dedicated to the assessment of the spatial distribution of human presence within the Arctic region on the basis of statistical analysis of population and tourist visits in different parts of the Arctic. Taking into account the uncertainty of regional Arctic borders definition, which are commonly determined in accordance with given purposes and tasks, we assessed the population and tourist visits for the Arctic Zone of the Russian Federation as administrative union as well as for the Arctic region as physic-geographical region.The growing number of tourists in the Arctic region influences future development prospects of the region. In 2017 the Arctic region with population of 4.3 million people was visited by 10.2 million tourist. While the favorable environmental conditions of Arctic ecosystems exist, the Arctic region should be considered as the source of nature resources for tourism and various recreational activities. Modern technologies enable the development of travel industry in the region, and therefore the industrial paradigm of “conquer” and “utilization” should be replaced with the axiological paradigm of “Arctic beauty” and recreational resource value.


Author(s):  
Denis Anan'ev

In the modern context the Arctic region is considered to be an arena for fierce international competition. The need to address numerous political, economic, legal and environmental issues, connected with this region, compels to rethink the historical experience of its development. The history of the Arctic Zone development made by the Russian Federation (particularly the Soviet period) has been studied both by Russian and foreign scholars. This paper intends to analyze the contemporary English-language publications on this topic; as well as to determine their subject matter and to identify the key trends in the English-language historiography of the Soviet Arctic development. The study has found that the contemporary English-speaking researchers (P. Josephson, J. McCannon, P. Horensma) consider a wide range of issues related to the history of the Soviet Arctic. For instance, the scholars write about the conduct of scientific research, administrative reforms and economic development, as well as about environmental issues and problems of indigenous population of the region. The theme of clarifying the role of the Soviet Union in determination of international and legal status of the Arctic region has been emphasized in the literature studied (N. Fogelson, J. McCannon). In the context of the «cultural turn» in the late 20th-century historiography Western researchers (P. Horensma, J. McCannon) analyzed the role of ideology and propaganda in constructing «the Arctic myth», its significance for the Soviet mass culture. The access to the Russian archives and their availability allowed the modern Western scholars to conduct their researches there, that resulted in obtaining a more objective assessment of the real victories and failures in the development of the Soviet Arctic. Summarizing the historical experience of the Russian Arctic development in the late 20th century the majority of Western authors believe that only the full-scale international cooperation will make it possible to effectively address the problems of the region.


2018 ◽  
Vol 239 ◽  
pp. 04020 ◽  
Author(s):  
Inga Skvortsova ◽  
Roman Latyshev ◽  
Marina Oskolkova

The purpose of this article is to analyze the problems of the development of the Arctic space, the prospects for the development of international cooperation in this field, to determine the role of international clusters in the development of the subarctic region. The cluster is considered as an international organization defining development strategies for state cooperation, joint business activities, the formation of the information space in the framework of the international innovation system with the active use of the innovation potential of cluster members' cooperation.


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