Sources, seasonal cycling, and fate of plutonium in a seasonally stratified and radiologically contaminated pond by Naomi L. Wasserman, Nancy Merino, Fanny Coutelot, Daniel I. Kaplan, Brian A. Powell, Annie B. Kersting, Mavrik Zavarin

“…New isotopic data confirm that reactor-derived plutonium overwhelms input from Northern Hemisphere fallout at this site. Two suggested mechanisms for observed plutonium cycling in the water column include: (1) reductive dissolution of sediment-derived Fe(III)-(oxyhydr)oxides during seasonal stratification and (2) plutonium stabilization complexed strongly to Fe(III)-particulate organic matter (POM) complexes. …”
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Novel 3D in situ visualization of seal heartworm (Acanthocheilonema spirocauda) larvae in the seal louse (Echinophthirius horridus) by X-ray microCT by David Ebmer, Stephan Handschuh, Thomas Schwaha, Ana Rubio-García, Ulrich Gärtner, Martin Glösmann, Anja Taubert, Carlos Hermosilla

“…Abstract The seal heartworm Acanthocheilonema spirocauda (Nematoda: Onchocercidae) parasitizes the heart and pulmonary arteries of various phocid seals of the Northern Hemisphere. Over many decades, potential vectors of this parasite have been discussed, and to this date, the life cycle is not fully known. …”
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Scoping review of carbon pricing systems in forest sector models by Tomke Honkomp, Franziska Schier

“…Geographically, since most studies target either the Northern Hemisphere or the world, we found a lack of in-depth assessments in tropical and boreal countries. …”
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In Vitro Comparison of the Bioactivities of Japanese and Bohemian Knotweed Ethanol Extracts by Lea Pogačnik, Tina Bergant, Mihaela Skrt, Nataša Poklar Ulrih, Jitka Viktorová, Tomáš Ruml

“…Knotweed is a flowering plant that is native to temperate and subtropical regions in the northern hemisphere. We evaluated Japanese (<i>Reynoutria japonica</i> Houtt.) and Bohemian (<i>Fallopia x bohemica</i>) knotweed rhizome and flower ethanol extracts and compared them in terms of their biological activities. …”
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Plio‐Pleistocene denitrification in the eastern tropical North Pacific: Intensification at 2.1 Ma by Zhonghui Liu, Mark A. Altabet, Timothy D. Herbert

“…Though there was no apparent change associated with Northern Hemisphere glaciation (NHG) at ∼2.7 Ma, denitrification strengthened substantially (by ∼2‰ in δ15N) at ∼2.1 (Ma). …”
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Interhemispheric comparison of spectral width boundary as observed by SuperDARN radars by K. Hosokawa, E. E. Woodfield, M. Lester, S. E. Milan, N. Sato, A. S. Yukimatu, T. Iyemori

“…The spectral width boundary in the Southern Hemisphere starts to move poleward 10 min earlier than that in the Northern Hemisphere. We discuss this difference in terms of interhemispheric asymmetry of the substorm breakup region in the longitudinal direction associated with the effect of IMF B_y.…”
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Multi-decadal degradation and fragmentation of palsas and peat plateaus in coastal Labrador, northeastern Canada by Yifeng Wang, Robert G Way, Jordan Beer

“…Peatland permafrost landforms, such as palsas and peat plateaus, often represent the most southern lowland permafrost occurrences in the Northern Hemisphere. While peatland permafrost is often found in continental conditions, over a thousand permafrost peatlands were recently identified along the previously understudied coastline of the Labrador Sea in northeastern Canada. …”
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The relationship of sea level changes to climatic change in northeast Asia and northern North America during the last 75 ka B.P. by Stuart A. Harris

“…The Arctic air mass is the cold, dry body of air slowly moving eastwards around the North Pole in the northern hemisphere. Its southern boundary consists of four planetary waves known as the Rossby waves that mark the interface with subtropical air bringing heat polewards. …”
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Biases of Global Tropopause Altitude Products in Reanalyses and Implications for Estimates of Tropospheric Column Ozone by Lingyun Meng, Jane Liu, David W. Tarasick, Yingjie Li

“…Overall, NCEP/NCAR outperforms MERRA-2 in the Northern Hemisphere but underperforms MERRA-2 in the Southern Hemisphere. …”
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Scale-dependent co-occurrence patterns of closely related genotypes in a lichen species complex by Ekaphan Kraichak, Luis Allende, Walter Obermayer, Robert Lücking, H. Thorsten Lumbsch

“…Here we analyzed the patterns of co-occurring individuals of lichenized fungi in the Graphis scripta complex, a monophyletic group of species occurring in temperate forests throughout the Northern Hemisphere. We generated sequences for three nuclear ribosomal and protein markers (nuLSU, RPB2, EF-1) and combined them with previously generated sequences to reconstruct an updated phylogeny for the complex. …”
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PagMYB151 facilitates proline accumulation to enhance salt tolerance of poplar by Jia Hu, Shengqiang Zou, Juanjuan Huang, Xuhui Huan, Xia Jin, Lieding Zhou, Kai Zhao, Youzhi Han, Shengji Wang

“…Abstract Poplar is one of the main urban and rural greening and shade tree species in the northern hemisphere, but its growth and development is always restricted by salt stress. …”
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Helminofauna da sarda (Scomber scombrus L. ) peixe da Costa Continental Portuguesa by A. Arandas Rêgo, M. Carvalho-Varela, M. M. Mendonça, M. M. Afonso-Roque

“…<br>Among fishes of importance in the Portuguese diet is the mackerel with a large geographical distribution in the Northern Hemisphere. The authors plan to recover the helminths of this host during the year, for taxonomic, zoogeographic and seasonal variation elements studies of potential importance to Public Health. …”
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Shifts of climate zones in multi-model climate change experiments using the Köppen climate classification by Franziska Hanf, Janina Körper, Thomas Spangehl, Ulrich Cubasch

“…Furthermore, there is a poleward extension of the warmer climate types in the northern hemisphere causing a retreat of regions with Cold Climate with Moist Winter and Tundra Climate. …”
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Complete mitochondrial genomes of Baikal endemic coregonids: omul and lacustrine whitefish (Salmonidae: Coregonus sp.) by Veronika Teterina, Lyubov Sukhanova, Vasiliy Smirnov, Natalya Smirnova, Sergei Kirilchik, Yulia Sapozhnikova, Olga Glizina, Vera Yakhnenko, Marina Tyagun, Tuyana Sidorova

“…Coregonid fishes are among the most successful groups in the subarctic, boreal, and subalpine fresh waters of the northern hemisphere. Limnetic–benthic sympatric species-pairs from two different evolutionary lineages, the North American lake whitefish (Coregonus clupeaformis species complex), and the European whitefish (Coregonus lavaretus species complex), are becoming the subject of close attention to explore the role of natural selection during the ecological speciation. …”
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Skin and Blood Microbial Signatures of Sedentary and Migratory Trout (<i>Salmo trutta</i>) of the Kerguelen Islands by Sophia Ferchiou, France Caza, Richard Villemur, Jacques Labonne, Yves St-Pierre

“…Our results showed that <i>S. trutta</i> of the Kerguelen Islands has a microbiome signature distinct from those of salmonids of the Northern Hemisphere. Our study also revealed that the skin and blood microbiomes differ between sedentary and migratory <i>S. trutta</i>. …”
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Chemical Composition, Antioxidant, and Antimicrobial Activity of <i>Dracocephalum moldavica</i> L. Essential Oil and Hydrolate by Milica Aćimović, Olja Šovljanski, Vanja Šeregelj, Lato Pezo, Valtcho D. Zheljazkov, Jovana Ljujić, Ana Tomić, Gordana Ćetković, Jasna Čanadanović-Brunet, Ana Miljković, Ljubodrag Vujisić

“…This aromatic herbaceous plant is widespread across the Northern Hemisphere regions and has been utilized in health-improving studies and applications. …”
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A New Tidal Stream Discovered in Gaia DR3 by Hao Tian, Chao Liu, Changqing Luo, Xiang-Xiang Xue, Yujiao Yang

“…Thanks to the precise astrometric measurements of proper motions by the Gaia mission, a new tidal stellar stream has been discovered in the northern hemisphere. The distribution of star count shows that the stream is approximately 80° long and 1.°70 wide. …”
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Evaluation of the effects of meteorological factors on COVID-19 prevalence by the distributed lag nonlinear model by Hongjing Ai, Rongfang Nie, Xiaosheng Wang

“…In the countries located in the Northern Hemisphere with similar latitudes, the risk of COVID-19 infection was the highest at temperature below 5 ℃. …”
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<i>Linnaea borealis</i> L. var. <i>borealis</i>—In Vitro Cultures and Phytochemical Screening as a Dual Strategy for Its Ex Situ Conservation and a Source of Bioactive Compounds of... by Barbara Thiem, Dariusz Kruszka, Natalia Turowska, Elwira Sliwinska, Viktor Berge, Małgorzata Kikowska

“…(Twinflower)—a dwarf shrub in the Linnaeeae tribe of Caprifoliaceae family—is distributed across the Northern Hemisphere. By means of this study, a reliable protocol for efficient micropropagation of uniform <i>L. borealis</i> L. var. …”
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COVID-19: the older adult and the importance of vitamin D sufficiency by Paula M. O'Shea, Tomás P. Griffin, Michelle Brennan, Eamon C. Mulkerrin

“…With few exceptions, countries in the Northern hemisphere have higher mortality rates from COVID-19. …”
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