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Gastropod assemblages associated with Himantothallus grandifolius, Sarcopeltis antarctica and other subtidal macroalgae 与Himanothallus grandifolis、南极Sarcopeltis和其他潮下大型藻类相关的腹足类组合
IF 1.6 4区 地球科学 Q2 Earth and Planetary Sciences Pub Date : 2022-05-04 DOI: 10.1017/S0954102022000153
C. Amsler, Leucas R. Miller, Raven A. Edwards, M. Amsler, W. Engl, J. McClintock, B. Baker
Abstract Gastropods are an important component of subtidal Antarctic communities including in common association with macroalgae. Nonetheless, limited data exist detailing their abundance and distribution on macroalgal species. This study documents the abundance and species composition of gastropod assemblages on the two largest, blade-forming Antarctic macroalgae, Himantothallus grandifolius and Sarcopeltis antarctica, sampled across two depths (9 and 18 m) at four sites for each species off Anvers Island, Antarctica. Gastropods were also enumerated on Desmarestia anceps, Desmarestia antarctica and Plocamium sp. but were not included in the main analyses because of small sample sizes. There were major differences between the gastropod assemblages on deep vs shallow H. grandifolius and S. antarctica with much higher numbers of individuals and also greater numbers of gastropod species at the greater depth. Differences between the gastropod assemblages on H. grandifolius and S. antarctica across sampling sites were apparent in non-parametric, multivariate analyses, although depth contributed more than site to these differences. Within common sites, assemblages on H. grandifolius were significantly different from those on S. antarctica at 18 m depth but not at 9 m depth, indicating that the host species can be but is not always more important than site in influencing the gastropod assemblages.
摘要腹足类是南极潮下群落的重要组成部分,与大型藻类有着共同的联系。尽管如此,详细说明大型藻类物种的丰度和分布的数据有限。这项研究记录了两种最大的、形成叶片的南极大型藻类,即大叶Himantothalus grandifolis和南极Sarcopeltis的腹足类组合的丰度和物种组成,在南极洲安弗斯岛附近的四个地点,在两个深度(9米和18米)对每种物种进行了采样。在Desmarestia anceps、Desmarestiia antarctica和Plocamium sp.上也列举了腹足类动物,但由于样本量较小,未纳入主要分析。在深部和浅部的H.grandifolis和S.antarctica上,腹足纲动物的组合存在重大差异,个体数量要高得多,而且在更大的深度上,腹面纲动物的物种数量也更大。在非参数、多变量分析中,大三叶草和南极S.antarctica上不同采样点的腹足类组合之间的差异是明显的,尽管深度对这些差异的贡献大于位置。在常见的地点中,在18米深的地方,大三叶草上的群落与南极S.antarctica上的群落有显著差异,但在9米深的时候没有,这表明寄主物种在影响腹足类群落方面可能但并不总是比地点更重要。
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引用次数: 6
The contribution of Antarctic moss peat to the understanding of global peatland processes 南极苔藓泥炭对理解全球泥炭地过程的贡献
IF 1.6 4区 地球科学 Q2 Earth and Planetary Sciences Pub Date : 2022-04-29 DOI: 10.1017/S0954102022000141
J. Fenton
Abstract The moss banks of the Maritime Antarctic composed of one or both of the mosses Chorisodontium aciphyllum and Polytrichum strictum form peat banks up to 3.4 m thick and 5500 years of age. They represent perhaps the simplest peat-forming systems in the world, so studying their dynamics can help in the understanding of peatland dynamics generally, particularly those of temperate blanket peat. They can provide insights into how the balance of growth, decomposition and compaction of peat results in peat formation, how downhill creep can be the cause of both vertical edges and the creation of patterned bogs and how erosion of peat can be a natural process.
摘要:南极海洋的苔藓库由一种或两种苔藓组成,其中Chorisodotum aciphyllum和Polytrichum strictum形成了3.4米厚、5500年树龄的泥炭库。它们可能代表了世界上最简单的泥炭形成系统,因此研究它们的动力学可以帮助理解泥炭地的总体动力学,特别是温带覆盖泥炭地的动力学。它们可以深入了解泥炭的生长、分解和压实平衡如何导致泥炭的形成,下坡爬行如何是垂直边缘和形成图案沼泽的原因,以及泥炭的侵蚀如何是一个自然过程。
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引用次数: 0
Patterns of moss richness in Admiralty Bay, King George Island, cannot be explained by geological or ornithogenic drivers alone 乔治王岛金钟湾苔藓丰富的模式不能仅靠地质或鸟类成因来解释
IF 1.6 4区 地球科学 Q2 Earth and Planetary Sciences Pub Date : 2022-04-08 DOI: 10.1017/S0954102021000614
Bárbara Guedes Costa Silva, P. Convey, Micheline Carvalho-Silva, E. T. Amorim, J. Patiño, P. Câmara
Abstract We set out to document the diversity and distribution of bryophytes in Admiralty Bay and thereby enable the identification of patterns in local diversity and their possible drivers. Combining data extracted from different sources and recent collections, we documented the presence of 63 species. Similarity analyses of moss species diversity in relation to underlying geology and ornithogenic influence identified an identical cophenetic correlation coefficient of 0.744 for both factors. The Sørensen index was < 0.6, indicating that the groups share < 60% of the species recorded. The data showed that the selected filters (ornithogenic soils, non-ornithogenic soils and different geological extracts) did not underlie consistent species groupings, and we conclude that other environmental and topographical factors are likely to be responsible for shaping the moss community structure in Admiralty Bay. To enable effective management of Antarctic Specially Managed Area (ASMA) No. 1 and Antarctic Specially Protected Area (ASPA) No. 128, robust assessments of the local ecosystem and biodiversity are necessary to assist in the decision-making processes mandated under the Antarctic Treaty System, one of whose founding principles is the preservation of the Antarctic ecosystem.
摘要我们着手记录金钟湾苔藓植物的多样性和分布,从而能够识别当地多样性的模式及其可能的驱动因素。结合从不同来源提取的数据和最近的收集,我们记录了63个物种的存在。苔藓物种多样性与潜在地质和鸟类成因影响的相似性分析表明,这两个因素的同源相关系数相同,为0.744。Sørensen指数<0.6,表明这些类群在记录的物种中所占比例<60%。数据显示,所选的滤层(鸟类成因土壤、非鸟类成因土壤和不同的地质提取物)并不是一致的物种分组的基础,我们得出结论,其他环境和地形因素可能是形成金钟湾苔藓群落结构的原因。为了能够有效管理1号南极特别管理区和128号南极特别保护区,有必要对当地生态系统和生物多样性进行强有力的评估,以协助《南极条约体系》规定的决策过程,该体系的基本原则之一是保护南极生态系统。
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引用次数: 1
Can classic biological invasion hypotheses be applied to reported cases of non-native terrestrial species in the Maritime Antarctic? 经典的生物入侵假说能否适用于已报道的南极海洋非本地陆生物种的案例?
IF 1.6 4区 地球科学 Q2 Earth and Planetary Sciences Pub Date : 2022-04-04 DOI: 10.1017/S0954102022000037
L. Pertierra, P. Convey, P. Martinez, P. Tejedo, J. Benayas, M. A. Olalla‐Tárraga
Abstract Understanding the success factors underlying each step in the process of biological invasion provides a robust foundation upon which to develop appropriate biosecurity measures. Insights into the processes occurring can be gained through clarifying the circumstances applying to non-native species that have arrived, established and, in some cases, successfully spread in terrestrial Antarctica. To date, examples include a small number of vascular plants and a greater diversity of invertebrates (including Diptera, Collembola, Acari and Oligochaeta), which share features of pre-adaptation to the environmental stresses experienced in Antarctica. In this synthesis, we examine multiple classic invasion science hypotheses that are widely considered to have relevance in invasion ecology and assess their utility in understanding the different invasion histories so far documented in the continent. All of these existing hypotheses appear relevant to some degree in explaining invasion processes in Antarctica. They are also relevant in understanding failed invasions and identifying barriers to invasion. However, the limited number of cases currently available constrains the possibility of establishing patterns and processes. To conclude, we discuss several new and emerging confirmatory methods as relevant tools to test and compare these hypotheses given the availability of appropriate sample sizes in the future.
摘要了解生物入侵过程中每一步的成功因素,为制定适当的生物安全措施提供了坚实的基础。通过澄清适用于已经抵达、建立并在某些情况下成功传播到南极洲陆地的非本土物种的情况,可以深入了解发生的过程。迄今为止,例子包括少数维管植物和更大多样性的无脊椎动物(包括双翅目、弹尾目、Acari和寡毛目),它们具有对南极洲经历的环境压力预先适应的特征。在这篇综述中,我们研究了被广泛认为与入侵生态学相关的多个经典入侵科学假设,并评估了它们在理解迄今为止在非洲大陆记录的不同入侵历史方面的效用。所有这些现有的假设似乎在一定程度上与解释南极入侵过程有关。它们在理解失败的入侵和识别入侵障碍方面也很重要。然而,目前可用的案例数量有限,限制了建立模式和程序的可能性。最后,我们讨论了几种新出现的验证性方法,作为测试和比较这些假设的相关工具,考虑到未来合适的样本量。
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引用次数: 4
Climate and energy balance of the ground in University Valley, Antarctica 南极洲大学谷地面的气候和能量平衡
IF 1.6 4区 地球科学 Q2 Earth and Planetary Sciences Pub Date : 2022-04-01 DOI: 10.1017/S0954102022000025
M. Marinova, C. Mckay, J. Heldmann, J. Goordial, D. Lacelle, W. Pollard, A. Davila
Abstract We report 3 years of data from one meteorological and three smaller stations in University Valley, a high-elevation (1677 m) site in the Dry Valleys of Antarctica with extensive dry permafrost. Mean air temperature was -23.4°C. Summer air temperatures were virtually always < 0°C and were consistent with the altitude lapse rate and empirical relationships between summer temperature, distance from the coast and elevation. The measured frost point (-22.5°C) at the 42 cm deep ice table is equal to the surface frost point and above the atmospheric frost point (-29.6°C), providing direct evidence that surface conditions control ground ice depth. Observed peak surface soil temperatures reach 6°C for ice-cemented ground > 15 cm deep but stay < 0°C when it is shallower. We develop an energy balance model tuned to this rocky and dry environment. We find that differences in peak soil surface temperatures are primarily due to the higher thermal diffusivity of ice-cemented ground compared to dry soil. Sensitivity studies show that expected natural variability is insufficient for melt to form and significant excursions from current conditions are required. The site's ice table meets the criteria for a Special Region on Mars, with 30% of the year > -18°C and water activity > 0.6.
摘要:我们报告了来自大学谷的一个气象站和三个较小的气象站的3年数据。大学谷是南极洲干旱山谷中的一个高海拔(1677米)地区,拥有广泛的干燥永久冻土。平均气温为-23.4°C。夏季气温几乎总是<0°C,与海拔下降率以及夏季气温、距海岸距离和海拔之间的经验关系一致。在42厘米深的冰台上测得的霜点(-22.5°C)等于地表霜点,高于大气霜点(-29.6°C),为地表条件控制地面冰深提供了直接证据。对于深度>15cm的冰胶结地面,观测到的峰值地表土壤温度达到6°C,但当地面较浅时,峰值土壤温度保持在<0°C。我们开发了一个适应这种岩石和干燥环境的能量平衡模型。我们发现,峰值土壤表面温度的差异主要是由于与干燥土壤相比,冰胶结地面的热扩散率更高。敏感性研究表明,预期的自然变异性不足以形成熔体,需要与当前条件发生显著偏离。该地点的冰表符合火星特殊区域的标准,一年中30%的时间>-18°C,水活动>0.6。
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引用次数: 3
ANS volume 34 issue 2 Cover and Back matter ANS第34卷第2期封面和封底
IF 1.6 4区 地球科学 Q2 Earth and Planetary Sciences Pub Date : 2022-04-01 DOI: 10.1017/s0954102022000219
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引用次数: 0
Obituary – Dr Yves Frenot (1958–2022) 讣告-伊夫·弗伦诺博士(1958–2022)
IF 1.6 4区 地球科学 Q2 Earth and Planetary Sciences Pub Date : 2022-04-01 DOI: 10.1017/s0954102022000189
D. Renault, J. Whinam
Yves Frenot will be greatly missed by his friends and colleagues around the world. His long and impressive career has left a tangible legacy in Antarctic and sub-Antarctic research, collaboration and policy. Yves participated in 14 expeditions to the French sub-Antarctic islands (Crozet, Kerguelen and Amsterdam islands) between 1982 and 2004, including a winter on Crozet Island, as well as expeditions to Spitsbergen and Heard Island. He also voyaged to Durmont d'Urville station three times in his role as Director of Institut Polaire Français Paul-Emile Victor (IPEV). In 2018, on board the maiden return voyage of the new L'Astrolabe, Yves was awarded the French Order of Merit. Yves was a prolific publisher on many aspects of the sub-Antarctic, with over 65 scientific publications and numerous reports, conference presentations and popular science communications covering topics such as terrestrial biodiversity (plants, animals, soils, ecophysiology), the impacts of climate change, primary succession after glacial retreat and the dynamics of invasive species. From 1989 to 2003, Yves managed teams at both the national and international level. At the EcoBio department (UMR (Unité Mixte de Recherche) CNRS (Centre National de la Recherche Scientifique) 6553, Rennes), Yves was the deputy director of the 'Station Biologique de Paimpont' from 1994 to 2002, and he also led the research group 'Impact of climate change' (UMR EcoBio). In the mid-1990s, he led the 'Biosol' research project, which was supported by the French Polar IPEV and focused on the study of soils and terrestrial fauna and flora. Yves was passionate about researching and protecting biodiversity in extreme environments. His collaboration with Thierry Micol, Pierre Jouventin and Véronique Sarrano produced a ground-breaking synthesis of research that led to protection (Nature Reserve Terres Australes Françaises) for the French Southern Territories (Kerguelen, Crozet, Saint Paul and Amsterdam islands). doi:10.1017/S0954102022000189
伊夫·弗雷诺将被他在世界各地的朋友和同事深深怀念。他漫长而令人印象深刻的职业生涯为南极和亚南极的研究、合作和政策留下了实实在在的遗产。1982年至2004年间,伊夫参加了14次对法属亚南极岛屿(克罗泽岛、克格伦岛和阿姆斯特丹岛)的考察,包括在克罗泽岛的一个冬天,以及对斯匹次卑尔根岛和赫德岛的考察。他还作为法国保罗-埃米尔·维克托研究所(IPEV)所长三次航行到德蒙特·居维尔站。2018年,在新“星盘号”首航返航时,伊夫被授予法国荣誉勋章。伊夫在亚南极的许多方面都是多产的出版商,发表了超过65篇科学出版物和大量报告,会议演讲和科普传播,主题包括陆地生物多样性(植物,动物,土壤,生态生理学),气候变化的影响,冰川退缩后的初级演替和入侵物种的动态。从1989年到2003年,伊夫在国家队和国际国家队执教。1994年至2002年,伊夫在法国雷恩大学生态研究部(法国国家科学研究中心6553)担任“派庞特生物研究站”副主任,并领导了“气候变化影响”研究小组。在20世纪90年代中期,他领导了由法国极地IPEV支持的“生物土壤”研究项目,重点研究土壤和陆地动植物。伊夫热衷于研究和保护极端环境下的生物多样性。他与Thierry Micol, Pierre jouvenn和vsamronique Sarrano合作,产生了开创性的综合研究,为法国南部领土(Kerguelen, Crozet, Saint Paul和Amsterdam islands)提供了保护(自然保护区Terres Australes franaisises)。doi: 10.1017 / S0954102022000189
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引用次数: 0
Changes in expeditioners' personality measures during 1 year Antarctic expeditions 1年南极考察中探险者人格测量的变化
IF 1.6 4区 地球科学 Q2 Earth and Planetary Sciences Pub Date : 2022-04-01 DOI: 10.1017/S0954102022000104
O. Kokun, L. Bakhmutova
Abstract The extreme working and living conditions at Antarctic stations cause numerous psychological changes in expeditioners. However, research on the changes in expeditioners' personality traits is virtually non-existent. Therefore, the present study aims to determine the changes in expeditioners' personality measures during 1 year Antarctic expeditions. This study examined 56 expeditioners working at the Ukrainian Antarctic Akademik Vernadsky station (52 men, 4 women; ages 20–63 years, M = 38.12, SD = 10.01) who participated in five annual expeditions between 2016 and 2021. The Ukrainian adaptations of four measures were used: the Thomas-Kilmann Conflict Mode Instrument, the Eysenck Personality Questionnaire, the Leonhard-Schmieschek Questionnaire and the Leary Interpersonal Checklist. During 1 year Antarctic expeditions, 8 of the 26 indicators used to describe expeditioners' personality measures changed significantly (P < 0.001–0.1). These indicators belonged to three of the four measures used in the study and were assessed as personally unfavourable. They included increased psychoticism and competing, managerial-autocratic, aggressive-sadistic, responsible-hypernormal, competitive-narcissistic and self-effacing-masochistic styles and a decreased accommodating style. Based on these results, promising areas for further research that could improve psychological selection, training and work for Antarctic expedition personnel are outlined.
南极考察站极端的工作和生活条件使探险者产生了许多心理变化。然而,关于探险者人格特征变化的研究几乎没有。因此,本研究旨在确定1年南极考察中探险者人格测量的变化。这项研究调查了在乌克兰南极维尔纳德斯基科考站工作的56名探险者(52名男性,4名女性;年龄20 ~ 63岁,M = 38.12, SD = 10.01), 2016 ~ 2021年参加5次年度考察。本研究采用了乌克兰版的四种测量方法:Thomas-Kilmann冲突模式量表、Eysenck人格问卷、Leonhard-Schmieschek问卷和Leary人际关系清单。在1年的南极考察中,考察者人格测量的26项指标中有8项发生显著变化(P < 0.001-0.1)。这些指标属于研究中使用的四项措施中的三项,并被评估为个人不利。它们包括精神病和竞争型、管理型专制型、攻击性虐待型、负责型超常型、竞争型自恋型和自我隐忍型受虐型以及适应型的减少。在此基础上,提出了进一步研究的前景,以改善南极考察人员的心理选择、培训和工作。
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引用次数: 1
The Chinese Antarctic science programme: origins and development 中国南极科学计划:起源与发展
IF 1.6 4区 地球科学 Q2 Earth and Planetary Sciences Pub Date : 2022-04-01 DOI: 10.1017/S095410202200013X
Mengzhu Zhang, M. Haward
Abstract In 1980, at the invitation of Australia, the first Chinese scientists went to Antarctica. China was therefore a relative ‘latecomer’ to engage in Antarctic science. In the period since its first Antarctic expedition in 1984, China's presence in Antarctica has expanded both in terms of its logistics and infrastructure and its scientific research. This paper outlines the development of China's national Antarctic programmes under the influence of corresponding national policies from the late 1970s to the present, noting the application of various scientific disciplines to Antarctic fields. The paper outlines and analyses the broadening and deepening of China's Antarctic science research, infrastructure and engagement.
摘要1980年,应澳大利亚邀请,第一批中国科学家赴南极考察。因此,中国是从事南极科学的相对“后来者”。自1984年首次南极考察以来,中国在南极洲的存在在后勤、基础设施和科学研究方面都有所扩大。本文概述了从20世纪70年代末到现在,在相应国家政策的影响下,中国国家南极计划的发展,并注意到各种科学学科在南极领域的应用。本文概述并分析了中国南极科学研究、基础设施和参与的广度和深度。
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引用次数: 1
ANS volume 34 issue 2 Cover and Front matter ANS第34卷第2期封面和封面
IF 1.6 4区 地球科学 Q2 Earth and Planetary Sciences Pub Date : 2022-04-01 DOI: 10.1017/s0954102022000207
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引用次数: 0
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Antarctic Science
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