Polar Research最新文献

IF 1.9 4区地球科学

Polar Research Pub Date : 2024-09-12 DOI: 10.33265/polar.v43.10291

Winfried Kurt Dallmann, Karsten Piepjohn

引用次数: 0

Widespread exposure to Francisella tularensis in Rangifer tarandus in Canada and Alaska 加拿大和阿拉斯加的袋獾广泛接触土拉弗氏菌

IF 1.9 4区地球科学

Polar Research Pub Date : 2024-07-18 DOI: 10.33265/polar.v43.9288

Kayla J. Buhler, Helen Schwantje, N. Jane Harms , Heather Fenton , Xavier Fernandez Aguilar, Susan Kutz, Lisa-Marie Leclerc, John Blake , Emily Jenkins

{"title":"Widespread exposure to Francisella tularensis in Rangifer tarandus in Canada and Alaska","authors":"Kayla J. Buhler, Helen Schwantje, N. Jane Harms , Heather Fenton , Xavier Fernandez Aguilar, Susan Kutz, Lisa-Marie Leclerc, John Blake , Emily Jenkins","doi":"10.33265/polar.v43.9288","DOIUrl":"https://doi.org/10.33265/polar.v43.9288","url":null,"abstract":"The range of tularemia, a disease caused by the bacterium Francisella tularensis, may expand alongside climate change in the North. Transmission occurs via biting arthropods, contaminated water sources, infected animal tissues and fluids and even aerosolized bacteria. Little research has been published on F. tularensis in northern Canada. We investigated whether Rangifer (caribou and reindeer) in Canada and Alaska are exposed to F. tularensis, as they provide significant cultural and subsistence value. From 2016 to 2020, 336 serum samples were collected from Rangifer across 17 herds, including captive reindeer in Alaska (n = 30) and wild caribou across Canada (n = 306) during collaring or harvesting efforts. Using a microagglutination test, we detected antibodies against F. tularensis in 7% of captive reindeer (CI95 2–21), 6% of migratory tundra caribou (CI95 4–11) and 10% of mountain woodland caribou (CI95 6–17), with the highest seroprevalence observed in animals from Nunavut (17%) and British Columbia, Canada (18%). Ten of the herds (n = 10/17; 59%) had at least one positive animal. Evidence of exposure to F. tularensis indicates that further studies are needed to characterize sources of transmission for Rangifer species and any potential health effects following infection.","PeriodicalId":49684,"journal":{"name":"Polar Research","volume":"23 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141737362","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}

引用次数: 0

Polar vortex weakening and its impact on surface temperature in recent decades 近几十年来极地涡旋的减弱及其对地表温度的影响

IF 1.9 4区地球科学

Polar Research Pub Date : 2024-07-05 DOI: 10.33265/polar.v43.9723

Seong-Joong Kim, Hyesun Choi

{"title":"Polar vortex weakening and its impact on surface temperature in recent decades","authors":"Seong-Joong Kim, Hyesun Choi","doi":"10.33265/polar.v43.9723","DOIUrl":"https://doi.org/10.33265/polar.v43.9723","url":null,"abstract":"The stratospheric polar vortex (SPV) weakening is linked to surface circulation changes. This study employs statistical analysis using reanalysis data to compare the anomalous SPV behaviour in the Northern (NH) and Southern (SH) hemispheres and its downward impacts on surface climate. The onset of annual SPV weakening occurs in mid-January and late September in the NH and SH hemispheres, respectively. Following the onset of SPV weakening, stratospheric polar cap height (PCH) anomalies were strongly correlated with tropospheric PCH anomalies. Significant cold anomalies were observed over Eurasia within 30 days after SPV weakening onset in the NH, whereas warming responses occurred in the SH 30–60 days after onset over Antarctica, except in the Antarctic Peninsula. These contrasting surface temperature responses to SPV weakening events in both hemispheres are the results of changes in the geopotential height in the troposphere, reminiscent of the change in geopotential height in the lower stratosphere, with a trough over Eurasia in the NH, and a higher height anomaly over East Antarctica in the SH. SPV changes have played a role in modulating surface climate via a downward influence on tropospheric circulation in recent decades. Even though they show a weakening trend in both hemispheres, SPV changes cannot fully explain long-term temperature trends. This is partially because SPV trends observed during the analysis period are relatively weak. This study enhances our understanding of the characteristics of the SPV coupled with troposphere circulation and can contribute to improved surface weather forecasting.","PeriodicalId":49684,"journal":{"name":"Polar Research","volume":"38 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141549595","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}

引用次数: 0

Some considerations regarding corporate social responsibility in the Yamalo-Nenets Autonomous Okrug, Russia 关于俄罗斯亚马尔-涅涅茨自治区企业社会责任的几点思考

IF 1.9 4区地球科学

Polar Research Pub Date : 2024-05-27 DOI: 10.33265/polar.v43.8723

Onur Limon, Hasibe Tugce Tasik

{"title":"Some considerations regarding corporate social responsibility in the Yamalo-Nenets Autonomous Okrug, Russia","authors":"Onur Limon, Hasibe Tugce Tasik","doi":"10.33265/polar.v43.8723","DOIUrl":"https://doi.org/10.33265/polar.v43.8723","url":null,"abstract":"Corporate social responsibility (CSR) practices—by which companies contribute positively to society through their voluntary actions and initiatives—have advanced slowly in Russia. In Russia, the separation between the state and business is not clear, as is the difference between state-owned companies and nominally ‘private’—but still state-controlled—companies, and this has shaped CSR. CSR as practiced in Russia is state-initiated to an extent greater than that in many other countries. The Yamalo-Nenets Autonomous Okrug (YNAO), in the Russian Arctic, has a significant population of indigenous people whose way of life has traditionally been based on reindeer herding, fishing and other subsistence activities that are threatened by the ecological damage caused by the hydrocarbon extraction that is carried out in the region by large state-owned or state-controlled corporations such as the parastatal corporation Gazprom. CSR has the potential to ameliorate some of the problems faced by residents of the YNAO, including difficulties relating to transportation, the supply of goods, health care and environmental protection. To achieve this, the CSR roles of the different parties involved need to be better defined and the CSR actions should shift emphasis from modernizing the larger settlements of the YNAO to improving the lives of people who maintain a more traditional way of life on the tundra. Drawing on interviews, government and company documents, and Russian and non-Russian scholarly papers, this Perspective piece considers some aspects of CSR in the YNAO and points to topics of future research.","PeriodicalId":49684,"journal":{"name":"Polar Research","volume":"10 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141169939","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}

引用次数: 0

The Troll Observing Network (TONe): A contribution to improving observations in the data-sparse region of Dronning Maud Land, Antarctica 巨怪观测网络（TONe）：为改进南极洲毛德皇后地数据稀缺地区的观测工作做出贡献

IF 1.9 4区地球科学

Polar Research Pub Date : 2024-05-06 DOI: 10.33265/polar.v43.10370

Christina A. Pedersen, Birgit Njåstad, Wenche Aas, Elin Darelius, Sébastien Descamps, Stig Flått, Tore Hattermann, Stephen R. Hudson, Wojciech J. Miloch, Simen Rykkje, Johannes Schweitzer, Rune Storvold, Stein Tronstad

{"title":"The Troll Observing Network (TONe): A contribution to improving observations in the data-sparse region of Dronning Maud Land, Antarctica","authors":"Christina A. Pedersen, Birgit Njåstad, Wenche Aas, Elin Darelius, Sébastien Descamps, Stig Flått, Tore Hattermann, Stephen R. Hudson, Wojciech J. Miloch, Simen Rykkje, Johannes Schweitzer, Rune Storvold, Stein Tronstad","doi":"10.33265/polar.v43.10370","DOIUrl":"https://doi.org/10.33265/polar.v43.10370","url":null,"abstract":"Antarctica and the Southern Ocean play vital roles in the Earth system, exerting significant influence on global atmospheric, cryospheric, and oceanic processes. Understanding the ongoing changes in Antarctica and their broader impact on global dynamics is imperative. Achieving this understanding necessitates dedicated and coordinated observations of environmental parameters in the region. The Troll Observing Network (TONe) is Norway's proactive initiative to the call for sustained, coordinated, complementary, geographically spread, and societally relevant long-term observations from Antarctica. Centered around the Troll Research Station in Dronning Maud Land, a region characterized by limited data availability, TONe constitutes a comprehensive state-of-the-art observatory network, specifically designed for environmental observations for studying and monitoring of the atmosphere, terrestrial, and marine environments. TONe aims to facilitate broad and open access to observational data and shared services to the international research communities as a foundation for acquiring knowledge of societal significance. TONe will, however, be a limited contribution the broader international data gathering effort required to underpin a strengthened understanding of Antarctica in the Earth system. TONE is an important initiative focused on a data sparse region of Antarctica, but has only substantial added value when seen in the context of similar ongoing and future efforts around the continent.","PeriodicalId":49684,"journal":{"name":"Polar Research","volume":"66 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140884084","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}

引用次数: 0

A bowhead whale vertebra embedded in marine limit beach sediment on Barentsøya, Svalbard 嵌入斯瓦尔巴特群岛巴伦支岛海洋极限海滩沉积物中的弓头鲸脊椎骨

IF 1.9 4区地球科学

Polar Research Pub Date : 2024-04-19 DOI: 10.33265/polar.v43.9724

Per Möller

引用次数: 0

Sedimentary facies and mineral provenance of Upper Triassic sandstones offshore Kvitøya, Svalbard: implications for palaeogeographic interpretations in the northern Barents Shelf area 斯瓦尔巴特岛克维托亚近海上三叠统砂岩的沉积面貌和矿物来源：对巴伦支海陆架北部地区古地理解释的影响

IF 1.9 4区地球科学

Polar Research Pub Date : 2024-04-16 DOI: 10.33265/polar.v43.9715

Mai Britt E. Mørk, Atle Mørk, Sondre K. Johansen, Kristian Drivenes, Bjørn A. Lundschien

{"title":"Sedimentary facies and mineral provenance of Upper Triassic sandstones offshore Kvitøya, Svalbard: implications for palaeogeographic interpretations in the northern Barents Shelf area","authors":"Mai Britt E. Mørk, Atle Mørk, Sondre K. Johansen, Kristian Drivenes, Bjørn A. Lundschien","doi":"10.33265/polar.v43.9715","DOIUrl":"https://doi.org/10.33265/polar.v43.9715","url":null,"abstract":"Upper Triassic (Carnian) sandstones of the De Geerdalen Formation cored south of the island of Kvitøya (80°N), north-easternmost Svalbard, are described in terms of sedimentary facies and petrography and compared regionally in the northern Barents Shelf. The succession off Kvitøya is characterized by its great thickness and is dominated by deltaic deposits with high sand content of lithic–feldspathic compositions. Comparison of sediment facies and sandstone compositions with adjacent areas suggest that the succession off Kvitøya is part of a larger delta system with its main sediment source from the east. The delta sedimentation was terminated by marine transgression in the earliest Norian. The sandstone compositions off Kvitøya differ from nearby locations by the higher content of cherty rock fragments and reworked volcanic debris in the Kvitøya sandstone, which is most distinct in the lower part of the succession. Provenance signatures are investigated by mineral–chemical analysis of detrital feldspars, rock fragments, garnet and Cr-spinel, characterizing a wide variety of igneous, metamorphic and sedimentary terranes, including palaeo-Urals and areas farther to east. Additional, more proximal sediment source areas may also have existed that could explain the increased sediment thickness and the mineralogical immature sandstone compositions of the Carnian sediments off Kvitøya.","PeriodicalId":49684,"journal":{"name":"Polar Research","volume":"29 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140613970","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}

引用次数: 0

Anthropogenic noise in terrestrial Antarctica: a short review of background information, challenges and opportunities 南极洲陆地上的人为噪声：背景信息、挑战和机遇简评

IF 1.9 4区地球科学

Polar Research Pub Date : 2024-04-16 DOI: 10.33265/polar.v43.9859

Lucia Ziegler, Alvaro Soutullo

{"title":"Anthropogenic noise in terrestrial Antarctica: a short review of background information, challenges and opportunities","authors":"Lucia Ziegler, Alvaro Soutullo","doi":"10.33265/polar.v43.9859","DOIUrl":"https://doi.org/10.33265/polar.v43.9859","url":null,"abstract":"Anthropogenic noise is an inevitable by-product of human activities. However, the potential effects of human noise on terrestrial Antarctica’s ecosystems have been understudied. Documented impacts encompass stress, alterations in behavioural patterns, auditory masking, and, in severe instances, mortality. This Perspective note aims to call attention to human-generated noise as potential sources of impact on Antarctic wildlife and to highlight the potential of soundscape analysis as a flexible, cost-effective tool for environmental monitoring across Antarctica, complementing other non-invasive approaches. Acoustic monitoring in terrestrial environments has been extensively used in different parts of the world to assess biodiversity, monitor populations’ status and trends, and identify and monitor sources of anthropogenic disturbance. Technological advances in passive acoustic monitoring allow for the gathering of detailed information with little need of human attention, and powerful processing tools and algorithms enable researchers to analyse large collections of audio data. Cold climates limit battery-operated instruments, but solar panels in Antarctic summer trials revealed over 100 days of unattended operation, which is promising for the incorporation of acoustic monitoring in Antarctica’s environmental management toolbox.","PeriodicalId":49684,"journal":{"name":"Polar Research","volume":"12 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140617751","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}

引用次数: 0

What does the fox say? Arctic fox vocalization and associated den behaviours 狐狸在说什么？北极狐的发声和相关巢穴行为

IF 1.9 4区地球科学

Polar Research Pub Date : 2024-04-04 DOI: 10.33265/polar.v43.9430

Kayla J. Buhler, Gustaf Samelius , Ray Alisauskas , Emily Jenkins

{"title":"What does the fox say? Arctic fox vocalization and associated den behaviours","authors":"Kayla J. Buhler, Gustaf Samelius , Ray Alisauskas , Emily Jenkins","doi":"10.33265/polar.v43.9430","DOIUrl":"https://doi.org/10.33265/polar.v43.9430","url":null,"abstract":"Foxes (Vulpes spp.) are small, solitary canids with relatively low social complexity compared to more gregarious canids, such as wolves and dogs. They are, therefore, expected to have a relatively simple vocal repertoire, with limited low-intensity sounds for close communication and many high-intensity sounds for long-distance communication. Arctic foxes (Vulpes lagopus), like many other foxes, are largely solitary outside of the breeding season. However, they have the largest litter size in the order Carnivora and may experience enhanced social complexity during the breeding season. In this study, we document the vocal repertoire of the Arctic fox during the breeding season, and how it changes before and after the emergence of pups. We also describe the relationship between vocalizations and other denning behaviours. Camera-traps captured six distinct sounds produced by breeding pairs of Arctic foxes and their young at dens: territorial barks, warning barks, alarm calls, cooing, whines and growling. Our study shows that although high-intensity sounds, such as territorial barks, are an important form of long-distance communication among Arctic foxes, low-intensity sounds and sound mixing are used on their dens following pup emergence. Thus, Arctic fox vocalization may be more complex than previously documented.","PeriodicalId":49684,"journal":{"name":"Polar Research","volume":"55 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140568764","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}

引用次数: 0

Evidence of a narwhal (Monodon monoceros) summer ground in Nares Strait 纳雷斯海峡独角鲸（Monodon monoceros）夏地的证据

IF 1.9 4区地球科学

Polar Research Pub Date : 2024-03-28 DOI: 10.33265/polar.v43.9860

Mads Peter Heide-Jørgensen, Jason E. Box, Rikke G. Hansen, Martin Jakobsson

引用次数: 0