Experimentally increased snow depth affects High Arctic microarthropods inconsistently over two consecutive wintersEveline Krab, Erik Lundin, Stephen Coulson, Ellen Dorrepaal & Elisabeth Cooper
Climate change induced alterations to winter conditions may affect decomposer organisms controlling the vast carbon stores in northern soils. Soil microarthropods are abundant decomposers in Arctic ecosystems affecting soil carbon release through their activities. We studied whether increased snow depth affected microarthropods, and if effects were consistent over two consecutive winters. We sampled Collembola and soil mites from a snow accumulation experiment at Svalbard in early summer and used soil microclimatic data to explore to...
A combined microbial and biogeochemical dataset from high-latitude ecosystems with respect to methane cycleMaialen Barret, Laure Gandois, Frederic Thalasso, Karla Martinez Cruz, Armando Sepulveda Jauregui, Céline Lavergne, Roman Teisserenc, Polette Aguilar, Oscar Gerardo-Nieto2, Claudia Etchebehere, Bruna Martins Dellagnezze, Patricia Bovio-Winkler, Gilberto Fochesatto, Nikita Tananaev, Mette Svenning, Christophe Seppey, Alexander Tveit, Rolando Chamy, María Soledad Astorga-España, Andrés Mansilla, Anton Van De Putte, Maxime Sweetlove, Alison E Murray & Léa Cabrol
High latitudes are experiencing intense ecosystem changes with climate warming. The underlying methane (CH4) cycling dynamics remain unresolved, despite its crucial climatic feedback. Atmospheric CH4 emissions are heterogeneous, resulting from local geochemical drivers, global climatic factors, and microbial production/consumption balance. Holistic studies are mandatory to capture CH4 cycling complexity. Here, we report a large set of integrated microbial and biogeochemical data from 396 samples, using a concerted sampling strategy and experimental protocols. The study followed...
1. Estimates of species abundance are of key importance in population and ecosystem level research but can be hard to obtain. Study designs using camera-traps are increasingly being used for large-scale monitoring of species that are elusive and/or occur naturally at low densities. 2. Golden eagle (Aquila chrysaetos) is one such species, and we investigate whether existing large-scale monitoring programs using baited camera-traps can be used to estimate the abundance of golden eagles, as an...
Spatial variation in plant chemical defence towards herbivores can help us understand variation in herbivore top-down control of shrubs in the Arctic and possibly also shrub responses to global warming. Less defended, non-resinous shrubs could be more influenced by herbivores than more defended, resinous shrubs. However, sparse field measurements limit our current understanding of how much of the circum-Arctic variation in defence compounds is explained by taxa or defence functional groups (resinous/non-resinous). We measured circum-Arctic...
Benthic functional diversity using imagery from drop down live camera feed in the Norwegian part of the Barents Sea in 2017Terri A. Souster & David Barnes
Multiple images of the seafloor at six sites across a broad latitudinal range in the Barents Sea in the Arctic were collected in July 2017 on the month long scientific cruise JR16006. The dataset includes environmental variables for each accompanied image. Each image (406 x 341mm) has density of fauna from different functional groups. We have 13 different functional groups based on other similar studies. The aim was to look at the effect of climate...
DYRK1a inhibitor mediated rescue of Drosophila models of Alzheimer’s disease-Down Syndrome phenotypesBangfu Zhu, Tom Parsons, Wenche Stensen, John S. Mjøen Svendsen, Anders Fugelli & James J.L. Hodge
Alzheimer’s disease (AD) is the most common neurodegenerative disease which is becoming increasingly prevalent due to ageing populations resulting in huge social, economic, and health costs to the community. Despite the pathological processing of genes such as Amyloid Precursor Protein (APP) into Amyloid-b and Microtubule Associated Protein Tau (MAPT) gene, into hyperphosphorylated Tau tangles being known for decades, there remains no treatments to halt disease progression. One population with increased risk of AD are people...
DNA-metabarcoding reveals the importance of gelatinous zooplankton in the diet of Pandalus borealis, a keystone species in the ArcticPaulina Urban, Kim Præbel, Shripathi Bhat, Jan Dierking & Owen S. Wangensteen
Information about the dietary composition of species is crucial to understand their position and role in the food web. Stomach content analysis (SCA) and stable isotope analysis (SIA) are commonly used to study marine trophic relationships. SCA can provide high taxonomic resolution but requires taxonomic expertise and frequently underestimates digestible taxa. SIA provides a time-integrated view of the dietary sources but often lacks in taxonomic resolution. The use of molecular approaches such as DNA-metabarcoding may...
Salmon louse infestation levels on sea trout can be predicted from a hydrodynamic lice dispersal modelThomas Bøhn, Rune Nilsen, Karl Øystein Gjelland, Martin Biuw, Anne Sandvik, Raul Primicerio, Ørjan Karlsen, Rosa Serra-Llinares, Anne Dagrun Sandvik & Rosa Maria Serra‐Llinares
The abundance of the parasitic salmon louse has increased with the growth in aquaculture of salmonids in open net pens. This represents a threat to wild salmonid populations as well as a key limiting factor for salmon farming. The Norwegian ‘traffic light’ management system for salmon farming aims to increase aquaculture production while securing sustainable wild salmonid populations. However, this system is at present solely focusing on mortality in wild Atlantic salmon, while responses of...
Variation and correlation in the timing of breeding of North Atlantic seabirds across multiple scalesKatharine Keogan, Francis Daunt, Sarah Wanless, Richard Phillips, David Alvarez, Tycho Anker-Nilssen, Robert Barrett, Claus Bech, Peter Becker, Per-Arvid Berglund, Sandra Bouwhuis, Zofia Burr, Olivier Chastel, Signe Christensen-Dalsgaard, Sébastien Descamps, Tony Diamond, Kyle Elliott, Kjell Einar Erikstad, Mike Harris, Jonas Hentati-Sundberg, Martin Heubeck, Magdalene Langset, Svein Lorentsen, Heather Major, Mark Mallory … & Stephen Kress
Timing of breeding, an important driver of fitness in many populations, is widely studied in the context of global change, yet despite considerable efforts to identify environmental drivers of seabird nesting phenology, for most populations we lack evidence of strong drivers. Here we adopt an alternative approach, examining the degree to which different populations positively covary in their annual phenology to infer whether phenological responses to environmental drivers are likely to be (i) shared across...
Current studies in genetics very often refer to notions from information science. The concept of genetic information is still disputed because it attributes semantic traits to what seem to be regular biochemical entities. Some researchers maintain that the use of information in biology is just metaphorical and maybe even misleading. In this paper, we offer an analysis of the nature and characteristics of the use of information in proteins, protein families, and their sequences. It...
At the beginning of 21st century, Sergej Sergeevich Zilitinkevich initiated shift of the fundamental paradigm in the planetary boundary layer theory, and wider, in statistical hydromechanics of stratified flows. He held the position of the chair in meteorology at Uppsala University, Sweden in 1998—2003, where he and his colleagues consistently introduced a concept of turbulent potential and total energy and not least reviewed fundamental understanding of turbulent mixing in stratified flows. Zilitinkevich continued as a...
Data from: Environmental drivers of population-level variation in the migratory and diving ontogeny of an Arctic top predatorJames Grecian, Garry Stenson, Martin Biuw, Lars Boehme, Lars Folkow, Pierre Goulet, Ian Jonsen, Aleksander Malde, Erling S. Nordøy, Aqqalu Rosing-Asvid & Sophie Smout
The development of migratory strategies that enable juveniles to survive to recruitment is critical for species that exploit seasonal niches. For animals that forage via breath-hold diving this requires a combination of both physiological and foraging skill development. Here, we assess how migratory and dive behaviour develop over the first months of life for a migratory Arctic top predator, the harp seal, tracked using animal-borne satellite relay data loggers. We reveal similarities in migratory movements...
UiT The Arctic University of Norway10
The Arctic University of Norway4
Norwegian Institute for Nature Research4
Swedish University of Agricultural Sciences3
University of Alaska Fairbanks2
University of Edinburgh2
British Antarctic Survey2
Melnikov Permafrost Institute of the Siberian Branch of the Russian Academy of Science2
University of St Andrews2
University Centre in Svalbard2