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Author  |
Zhuang Jiang, Becky Alexander, Joel Savarino, Joseph Erbland, Lei Geng |
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Title |
Impacts of the photo-driven post-depositional processing on snow nitrate and its isotopes at Summit, Greenland: a model-based study |
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Year |
2021 |
Publication |
The Cryosphere |
Abbreviated Journal |
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Volume |
15 |
Issue |
9 |
Pages |
4207-4220 |
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1177 |
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1994-0416 |
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yes |
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8375 |
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Is the southern crab Halicarcinus planatus (Fabricius, 1775) the next invader of Antarctica? |
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Year |
2021 |
Publication |
Global Change Biology |
Abbreviated Journal |
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Volume |
27 |
Issue |
15 |
Pages |
3487-3504 |
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Keywords |
climate change establishment niche modelling non-native species reptant crab Southern Ocean survival thermotolerance |
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1044 |
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1365-2486 |
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yes |
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8005 |
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Title |
Evolutionary Genetics of Borrelia |
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Journal |
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Year |
2021 |
Publication |
Current issues in molecular biology |
Abbreviated Journal |
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Volume |
42 |
Issue |
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Pages |
97-112 |
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Abstract |
The genus Borrelia consists of evolutionarily and genetically diverse bacterial species that cause a variety of diseases in humans and domestic animals. These vector-borne spirochetes can be classified into two major evolutionary groups, the Lyme borreliosis clade and the relapsing fever clade, both of which have complex transmission cycles during which they interact with multiple host species and arthropod vectors. Molecular, ecological, and evolutionary studies have each provided significant contributions towards our understanding of the natural history, biology and evolutionary genetics of Borrelia species; however, integration of these studies is required to identify the evolutionary causes and consequences of the genetic variation within and among Borrelia species. For example, molecular and genetic studies have identified the adaptations that maximize fitness components throughout the Borrelia lifecycle and enhance transmission efficacy but provide limited insights into the evolutionary pressures that have produced them. Ecological studies can identify interactions between Borrelia species and the vertebrate hosts and arthropod vectors they encounter and the resulting impact on the geographic distribution and abundance of spirochetes but not the genetic or molecular basis underlying these interactions. In this review we discuss recent findings on the evolutionary genetics from both of the evolutionarily distinct clades of Borrelia species. We focus on connecting molecular interactions to the ecological processes that have driven the evolution and diversification of Borrelia species in order to understand the current distribution of genetic and molecular variation within and between Borrelia species. |
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333 |
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1467-3037 |
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yes |
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8521 |
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Author |
Yves Cherel |
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Title |
?Mastigoteuthis B Clarke, 1980, is a junior synonym of Asperoteuthis acanthoderma (Lu, 1977) (Cephalopoda, Oegopsida, Chiroteuthidae), a rare cosmopolitan deep-sea squid |
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Journal |
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Year |
2021 |
Publication |
Marine Biodiversity |
Abbreviated Journal |
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Volume |
51 |
Issue |
1 |
Pages |
14 |
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Abstract |
The present work resolved the long-standing taxonomic problem associated with the enigmatic ?Mastigoteuthis B Clarke, 1980, by demonstrating that these lower beaks correspond to those of the large deep-sea chiroteuthid Asperoteuthis acanthoderma (Lu, 1977). A review of the existing literature listed 22 specimens of A. acanthoderma, but synonymizing ?Mastigoteuthis B with A. acanthoderma increased 14 times the species record worldwide. Pooling the data from both specimens and beaks (a total of 329 individuals) indicates that the species has a circumglobal distribution, since it occurs in tropical and subtropical waters of the Atlantic, Indian and Pacific Oceans. The synonymization also highlights trophic relationships of the species as a prey of top marine predators. Lower beaks of A. acanthoderma were mostly found in stomachs of sperm whales, but a few beaks were also recorded from stomach contents of sharks, swordfish and the wandering albatross. |
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109 |
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1867-1624 |
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yes |
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Serial |
8208 |
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Author |
Yushiro Fujii, Kenji Satake, Shingo Watada, Tung-Cheng Ho |
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Year |
2021 |
Publication |
Pure and Applied Geophysics |
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Volume |
178 |
Issue |
12 |
Pages |
4777-4796 |
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688 |
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1420-9136 |
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yes |
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8411 |
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Author |
Yan Axel Gomez Coutouly |
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Book Chapter |
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Year |
2021 |
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1217 |
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Bachelor's thesis |
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yes |
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Serial |
8692 |
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Title |
A Bad Start in Life? Maternal Transfer of Legacy and Emerging Poly- and Perfluoroalkyl Substances to Eggs in an Arctic Seabird |
Type |
Journal |
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Year |
2021 |
Publication |
Environmental Science & Technology |
Abbreviated Journal |
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Volume |
56 |
Issue |
10 |
Pages |
6091-6102 |
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Abstract |
In birds, maternal transfer is a major exposure route for several contaminants, including poly- and perfluoroalkyl substances (PFAS). Little is known, however, about the extent of the transfer of the different PFAS compounds to the eggs, especially for alternative fluorinated compounds. In the present study, we measured legacy and emerging PFAS, including Gen-X, ADONA, and F-53B, in the plasma of prelaying black-legged kittiwake females breeding in Svalbard and the yolk of their eggs. We aimed to (1) describe the contaminant levels and patterns in both females and eggs, and (2) investigate the maternal transfer, that is, biological variables and the relationship between the females and their eggs for each compound. Contamination of both females and eggs were dominated by linPFOS then PFUnA or PFTriA. We notably found 7:3 fluorotelomer carboxylic acid?a precursor of long-chain carboxylates?in 84% of the egg yolks, and provide the first documented finding of ADONA in wildlife. Emerging compounds were all below the detection limit in female plasma. There was a linear association between females and eggs for most of the PFAS. Analyses of maternal transfer ratios in females and eggs suggest that the transfer is increasing with PFAS carbon chain length, therefore the longest chain perfluoroalkyl carboxylic acids (PFCAs) were preferentially transferred to the eggs. The mean ?PFAS in the second-laid eggs was 73% of that in the first-laid eggs. Additional effort on assessing the outcome of maternal transfers on avian development physiology is essential, especially for PFCAs and emerging fluorinated compounds which are under-represented in experimental studies. |
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330 |
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0013-936X |
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yes |
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Serial |
8315 |
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Title |
Mercury in precipitated and surface snow at Dome C and a first estimate of mercury depositional fluxes during the Austral summer on the high Antarctic plateau |
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Year |
2021 |
Publication |
Atmospheric Environment |
Abbreviated Journal |
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Volume |
262 |
Issue |
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Pages |
118634 |
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Keywords |
Atmospheric conditions High resolution sampling Snow scavenging factor Snow sublimation |
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1028 |
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1352-2310 |
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yes |
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8057 |
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Title |
Hemispheric asymmetry in ocean change and the productivity of ecosystem sentinels |
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Year |
2021 |
Publication |
Science |
Abbreviated Journal |
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Volume |
372 |
Issue |
6545 |
Pages |
980-983 |
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Abstract |
Sampling seabirds The vastness of the worlds' oceans makes them difficult to monitor. Seabirds that forage and breed across oceans globally have been recognized as sentinels of ocean health. Sydeman et al. looked across seabird species of both the Northern and Southern Hemispheres and found varying patterns. Northern Hemisphere species exhibited greater signs of stress and reduced breeding success, indicative of low fish resources. Southern Hemisphere species showed less impact on reproductive output, suggesting that the fish populations there have thus far been less disturbed. The differences across hemispheres indicate different strategies for conservation, with active recovery needed in the north and enhanced protection in the south. Science, abf1772, this issue p. 980 Climate change and other human activities are causing profound effects on marine ecosystem productivity. We show that the breeding success of seabirds is tracking hemispheric differences in ocean warming and human impacts, with the strongest effects on fish-eating, surface-foraging species in the north. Hemispheric asymmetry suggests the need for ocean management at hemispheric scales. For the north, tactical, climate-based recovery plans for forage fish resources are needed to recover seabird breeding productivity. In the south, lower-magnitude change in seabird productivity presents opportunities for strategic management approaches such as large marine protected areas to sustain food webs and maintain predator productivity. Global monitoring of seabird productivity enables the detection of ecosystem change in remote regions and contributes to our understanding of marine climate impacts on ecosystems. The breeding success of seabirds is tracking hemispheric differences in ocean warming and human impacts. The breeding success of seabirds is tracking hemispheric differences in ocean warming and human impacts. |
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0036-8075, 1095-9203 |
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7980 |
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Author |
Von Beckerath, X., Eitzinger, B., Sittler, B., Gilg, O., Yannic, G., Klein, A.-M., Benadi, G. |
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Long-term monitoring reveals topographical features and vegetation explain winter habitat use of an Arctic rodent |
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Peer-reviewed symposium |
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2021 |
Publication |
Annual meeting of the icelandic ecological society. nordic society oikos, reykjavik, iceland, 16-17 april 2021 |
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yes |
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8450 |
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