Antarctic Science最新文献_第3页

The explorer king: southern report of the king penguin (Aptenodytes patagonicus) in the Antarctic Peninsula 探险家国王：南极半岛国王企鹅（Aptenodytes patagonicus）的南方报告

IF 1.6 4区地球科学

Antarctic Science Pub Date : 2024-01-16 DOI: 10.1017/s0954102023000354

Marcela M. Libertelli, Jose L. Orgeira, Facundo Alvarez

{"title":"The explorer king: southern report of the king penguin (Aptenodytes patagonicus) in the Antarctic Peninsula","authors":"Marcela M. Libertelli, Jose L. Orgeira, Facundo Alvarez","doi":"10.1017/s0954102023000354","DOIUrl":"https://doi.org/10.1017/s0954102023000354","url":null,"abstract":"A juvenile king penguin (Aptenodytes patagonicus) was sighted at San Martín Station, Marguerite Bay, west of the Antarctic Peninsula (68°07'S, 67°08'W) on 3 February 2020. The animal was apparently healthy. It was uninjured, moving freely between the station buildings. It remained in the area until 27 March, when it was last seen. Numerous king penguin records have been reported in recent years, mostly in the South Shetland Islands. Two chicks have even been recorded hatching on these islands, but there is currently no evidence that king penguins have raised a chick to emancipation successfully. Here we present the most southerly known record of king penguins, the only one farther south than the Antarctic Circle. Coupled with observations from other parts of Antarctica, the information presented here supports previous suggestions by other authors of a southwards expansion of this species specifically in the Antarctic Peninsula region. The presence of this species at numerous Antarctic localities suggests that the known distribution of this penguin could change in the near future in response to climate change.","PeriodicalId":50972,"journal":{"name":"Antarctic Science","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139476932","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 policy-law-science nexus in the Antarctic 南极的政策-法律-科学关系

IF 1.6 4区地球科学

Antarctic Science Pub Date : 2023-12-22 DOI: 10.1017/s0954102023000317

Yelena Yermakova, Rebecca Hingley, Akiho Shibata

引用次数: 0

The risk of highly pathogenic avian influenza in the Southern Ocean: a practical guide for operators and scientists interacting with wildlife 南大洋高致病性禽流感风险：与野生动物互动的操作人员和科学家实用指南

IF 1.6 4区地球科学

Antarctic Science Pub Date : 2023-12-21 DOI: 10.1017/s0954102023000342

Meagan Dewar, Michelle Wille, Amandine Gamble, Ralph E.T. Vanstreels, Thierry Bouliner, Adrian Smith, Arvind Varsani, Norman Ratcliffe, Jennifer Black, Amanda Lynnes, Andrés Barbosa, Tom Hart

引用次数: 0

Repeated freezing impacts buoyancy and photosynthesis of a rafting kelp species 反复冷冻影响筏状海带物种的浮力和光合作用

IF 1.6 4区地球科学

Antarctic Science Pub Date : 2023-12-21 DOI: 10.1017/s0954102023000305

Sophie M. Sinclair, Grant A. Duffy, Ceridwen I. Fraser

{"title":"Repeated freezing impacts buoyancy and photosynthesis of a rafting kelp species","authors":"Sophie M. Sinclair, Grant A. Duffy, Ceridwen I. Fraser","doi":"10.1017/s0954102023000305","DOIUrl":"https://doi.org/10.1017/s0954102023000305","url":null,"abstract":"Antarctica was once considered biologically isolated, surrounded by oceanic barriers (Fraser et al. 2018). However, floating materials such as kelp rafts (Fraser et al. 2018, Avila et al. 2020), wood (Lewis et al. 2005) and plastics (Avila et al. 2020) are now known to cross these barriers and reach Antarctic shores. Such incursions might enable non-native species (either rafting species themselves or associated hitchhikers) to colonize Antarctica as the climate warms (Avila et al. 2020, Fraser et al. 2020), but whether these species will be able to survive and reproduce in the Antarctic is not yet known. Sea ice is a defining characteristic of Antarctic coastlines, and modelled trajectories of kelp rafts (Fraser et al. 2018) cross-referenced against sea-ice observations (Parkinson 2019) suggest that collisions between rafts and seasonal sea ice occur frequently (Fig. 1a); thus, rafts are expected to be entrained in, on or under sea ice and experience multiple freeze-and-thaw cycles on their journeys to Antarctica. In addition, kelp rafts that reach the Antarctic intertidal will experience temperatures well below 0°C if exposed to the air at low tide. Freezing can cause severe disruptive stress to seaweeds, and ice crystals growing in intercellular spaces can damage cell membranes and cause cell lysis (Eggert 2012). Such damage could affect the buoyancy of kelp tissue and decrease rafting ability. Although some non-native kelp rafts recovered from Antarctic shores appeared to still be reproductively viable, with mature gametes observed in reproductive tissue (Fraser et al. 2018), tissue damage caused by freezing could have widespread effects on the health, function and establishment success of a non-native species traversing the Southern Ocean.","PeriodicalId":50972,"journal":{"name":"Antarctic Science","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2023-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138826782","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

Short Note: 2022 Hunga Tonga-Hunga Ha'apai tsunami measured beneath the Ross Ice Shelf 简讯：2022 年在罗斯冰架下测量到的 Hunga Tonga-Hunga Ha'apai 海啸

IF 1.6 4区地球科学

Antarctic Science Pub Date : 2023-12-14 DOI: 10.1017/s0954102023000366

Craig Stewart, Huw Horgan, Craig Stevens

引用次数: 0

Sixty years of glacial retreat behind Palmer Station, Antarctica 南极洲帕尔默站背后六十年的冰川退缩

IF 1.6 4区地球科学

Antarctic Science Pub Date : 2023-12-12 DOI: 10.1017/s0954102023000251

M. Cimino, M. A. Goerke, Shavonna Bent

引用次数: 0

Public support for Antarctic science: lessons from a national survey of Australians 公众对南极科学的支持:来自澳大利亚全国调查的教训

4区地球科学

Antarctic Science Pub Date : 2023-10-26 DOI: 10.1017/s0954102023000263

Bruce Tranter, Elizabeth Leane

引用次数: 0

The impact of the Neoglacial and other environmental changes on the raised beaches of Joinville Island, Antarctica 新冰川期和其他环境变化对南极Joinville岛凸起海滩的影响

4区地球科学

Antarctic Science Pub Date : 2023-10-19 DOI: 10.1017/s0954102023000275

Brittany M. Theilen, Alexander R. Simms, Regina DeWitt, Julie Zurbuchen, Christopher Garcia, Cameron Gernant

{"title":"The impact of the Neoglacial and other environmental changes on the raised beaches of Joinville Island, Antarctica","authors":"Brittany M. Theilen, Alexander R. Simms, Regina DeWitt, Julie Zurbuchen, Christopher Garcia, Cameron Gernant","doi":"10.1017/s0954102023000275","DOIUrl":"https://doi.org/10.1017/s0954102023000275","url":null,"abstract":"Abstract In order to reconstruct past environmental conditions along the north-eastern Antarctic Peninsula, we documented changes in grain size, grain roundness, onlap as seen in ground-penetrating radar reflection profiles and ice-rafted debris on a set of 36 raised beaches developed over the last ~7.7 ± 0.9 ka on Joinville Island. The most pronounced changes in beach character occur at ~2.7–3.0 ka. At this time, there appears to have been a reintroduction of less rounded material, the development of stratification within individual beach ridges, an introduction of seaweed and limpets to the beach deposits, a change in clast provenance (although slightly earlier than the change in cobble roundness) and a shallowing of the overall beach plain slope. Prolonged cooling associated with the Neoglacial period may have contributed to these changes, as the readvance of glaciers could have changed the provenance of the beach deposits and introduced more material, leading to the change in roundness of the beach cobbles and the overall slope of the beach plain. This study suggests that late Holocene environmental change left a measurable impact on the coastal zone of Antarctica.","PeriodicalId":50972,"journal":{"name":"Antarctic Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135729720","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

Communicating the best available science to inform Antarctic policy and management: a practical introduction for researchers 传播最好的现有科学，为南极政策和管理提供信息:给研究人员的实用介绍

4区地球科学

Antarctic Science Pub Date : 2023-10-18 DOI: 10.1017/s095410202300024x

Kevin A. Hughes, Andrew Lowther, Neil Gilbert, Claire M. Waluda, Jasmine R. Lee

{"title":"Communicating the best available science to inform Antarctic policy and management: a practical introduction for researchers","authors":"Kevin A. Hughes, Andrew Lowther, Neil Gilbert, Claire M. Waluda, Jasmine R. Lee","doi":"10.1017/s095410202300024x","DOIUrl":"https://doi.org/10.1017/s095410202300024x","url":null,"abstract":"Abstract Communication at the science-policy interface can be bewildering not only for early-career researchers, but also for many within the research community. In the context of Antarctica and the Southern Ocean, decision-makers operating within the Antarctic Treaty System (ATS) aspire to use the best available science as a basis for their decision-making. Therefore, to maximize the impact of Antarctic Treaty Parties' substantial investment in southern polar research, researchers wishing to contribute to policy and management must understand 1) how their work relates to and can potentially inform Antarctic and/or global policy and 2) the available mechanisms by which their research can be communicated to decision-makers. Recognizing these needs, we describe the main legal instruments relevant to Antarctic governance (primarily the ATS) and the associated meetings and stakeholders that contribute to policy development for the region. We highlight effective mechanisms by which Antarctic researchers may communicate their science into the policy realm, including through National Delegations or the Scientific Committee on Antarctic Research (SCAR), and we detail the key contemporary topics of interest to decision-makers, including those issues where further research is needed. Finally, we describe challenges at the Antarctic science-policy interface that may potentially slow or halt policy development.","PeriodicalId":50972,"journal":{"name":"Antarctic Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135883628","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

Towards intersectional approaches to gendered change in Antarctic research 对南极研究中性别变化的交叉方法

4区地球科学

Antarctic Science Pub Date : 2023-10-09 DOI: 10.1017/s0954102023000214

Morgan C. Seag, Hanne E.F. Nielsen, Meredith Nash, Renuka Badhe

{"title":"Towards intersectional approaches to gendered change in Antarctic research","authors":"Morgan C. Seag, Hanne E.F. Nielsen, Meredith Nash, Renuka Badhe","doi":"10.1017/s0954102023000214","DOIUrl":"https://doi.org/10.1017/s0954102023000214","url":null,"abstract":"Abstract Antarctic research remains an enterprise in which people with certain backgrounds and identities have distinct career advantages over others. In this paper, we focus on barriers to women's participation and success in Antarctic research. Drawing on feminist social science literature on gender inequality in science, we identify two foundational, interrelated factors that have hampered progress across global Antarctic research. We propose that these barriers can be effectively addressed through intersectional approaches to change. We synthesize a broad range of multidisciplinary research on intersectionality in scientific workplaces and apply this literature to the unique institutional, historical and geographical contexts of Antarctic research. We argue that an intersectional lens improves understanding of persistent gender inequalities in Antarctic research, and we offer examples of how intersectionality can be practically applied within Antarctic institutions and communities. By embracing intersectional approaches to change, the Antarctic research community has the opportunity to lead in the advancement of equitable global scientific cultures and to fully realize Antarctica's potential as a place for peaceful, scientific collaboration by and for all humanity - not just a privileged few.","PeriodicalId":50972,"journal":{"name":"Antarctic Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135044427","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