15 Works

The Spawning behavior of Arctic charr video collection

Torvald B. Egeland, Ivar Folstad & Jarle Tryti Nordeide
The Spawning behavior of Arctic charr (Salvelinus alpinus) collection contains video recordings from Lake Fjellfrøsvatnet (69°08′N 19°34′E), Troms, Northern Norway.\n\nThe study was carried out during the spawning period from mid‐September to early October. Video monitoring of spawning Arctic charr on their Lek sites was conducted at two known locations using six cameras.\n\nFor more information about the collection, please see the documentation data set: Egeland, Torvald B.; Folstad, Ivar; Nordeide, Jarle Tryti, 2021, "Documentation of the...

In a comfort zone and beyond – ecological plasticity of key marine mediators

Emilia Trudnowska, Kaja Balazy, Joanna Stoń-Egiert, Irina Smolina, Thomas A. Brown & Marta Gluchowska
Copepods of the genus Calanus are the key components of zooplankton. Understanding their response to a changing climate is crucial to predict the functioning of future warmer high-latitude ecosystems. Although specific Calanus species are morphologically very similar, they have different life strategies and roles in ecosystems. In this study, C. finmarchicus and C. glacialis were thoroughly studied with regard to their plasticity in morphology and ecology both in their preferred original water mass (Atlantic vs....

Population and seascape genomics of a critically endangered benthic elasmobranch, the blue skate Dipturus batis

Aurelien Delaval, Michelle Frost, Victoria Bendall, Stuart Hetherington, David Stirling, Galice Hoarau, Catherine Jones & Leslie Noble
The blue skate (Dipturus batis) has a patchy distribution across the North-East Atlantic Ocean, largely restricted to occidental seas around the British Isles following fisheries-induced population declines and extirpations. The viability of remnant populations remains uncertain, and could be impacted by continued fishing and bycatch pressure and the projected impacts of climate change. We genotyped 503 samples of D. batis, obtained opportunistically from the widest available geographic range, across 6,350 single nucleotide polymorphisms (SNPs) using...

Herbivores reduce seedling recruitment in alpine plant communities

Øystein H. Opedal, Kristin Nystuen, Dagmar Hagen, Håkon Holien, Mia Sørensen, Simone Lang, Sigrid Lindmo, G. RIchard Strimbeck & Bente Graae
Through changes in climate and other environmental factors, alpine tundra ecosystems are subject to increased cover of erect shrubs, reduced predictability of rodent dynamics, and changes in wild and domesticated herbivore densities. To predict the dynamics of these ecosystems, we need to understand how these simultaneous changes affect alpine vegetation. In the long term, vegetation dynamics may depend critically on seedling recruitment. To study drivers of alpine plant seedling recruitment, we set up a field...

Directed endozoochorous dispersal by scavengers facilitate sexual reproduction in otherwise clonal plants at cadaver sites

Mie P. Arnberg, Shane C. Frank, Rakel Blaalid, Marie L. Davey, Amy E. Eycott & Sam M. J. G. Steyaert
The regeneration niche of many plant species involves spatially and temporally unpredictable disturbances, called recruitment windows of opportunity. However, even species with clear dispersal adaptations such as fleshy berries may not successfully reach such elusive regeneration microsites. Ericaceous, berry-producing species in the northern hemisphere demonstrate this dispersal limitation. They are said to display a reproductive paradox owing to their lack of regeneration in apparently suitable microsites despite considerable investment in producing large quantities of berries....

Do genetic differences in growth thermal reaction norms maintain genetic variation in timing of diapause induction?

Erlend Fossen, Joost Raeymaekers & Sigurd Einum
An optimal timing for diapause induction through the sexual production of dormant propagules is expected in organisms with temporary populations. Yet, empirical studies often find high within-population genetic variation in the sexual production of such propagules, suggesting that this is a common feature of such organisms. Here, we hypothesize that genetic variation in the propensity to produce dormant propagules, Pd, is maintained by a genotype-by-environment interaction in clonal reproductive rates, where fast-growing genotypes within an...

Local political communication in a hybrid media system

Carl-Gustav Lindén, Lisbeth Morlandstø & Gunnar Nygren

Intraspecific genetic variation matters when predicting seagrass distribution under climate change

Zi-Min Hu, Quan-Sheng Zhang, Jie Zhang, Kass Jamie, Mammola Stefano, Fresia Pablo, Draisma Stefano, Assis Jorge, Jueterbock Alexander, Yokota Masashi & Zhixin Zhang
Seagrasses play a vital role in structuring coastal marine ecosystems, but their distributional range and genetic diversity have declined rapidly over the past decades. In order to improve conservation of seagrass species, it is important to predict how climate change may impact their ranges. Such predictions are typically made with correlative species distribution models (SDMs), which can estimate a species’ potential distribution under present and future climatic scenarios given species’ presence data and climatic predictor...

Animal-borne video systems provide insight into the reproductive behavior of the Asian black bear

Tomoko Naganuma, Mii Tanaka, Shiori Tezuka, Sam M.J.G. Steyaert, Kahoko Tochigi, Akino Inagaki, Hiroaki Myojo, Koji Yamazaki & Shinsuke Koike
Previous studies on the mating system of the Asian black bear (Ursus thibetanus) have been limited to observations of captive populations and estimations of multiple paternities. Hence, the mating system of wild bears remains poorly understood. Animal-borne camera systems (i.e., cameras mounted on animals) provide novel tools to study the behavior of elusive animals. Here, we used an animal-borne video system to record the activities of wild bears during the mating season. Video camera collars...

Data for: Warming temperatures limit the maximum body length of teleost fishes across a latitudinal gradient in Norwegian waters

Charles P. Lavin, Cesc Gordó-Vilaseca, Mark John Costello, Zhiyuan Shi, Fabrice Stephenson & Arnaud Grüss
As the majority of marine organisms are water-breathing ectotherms, temperature and dissolved oxygen are key environmental variables that influence their fitness and geographic distribution. In line with the gill-oxygen limitation theory (GOLT), the maximum asymptotic body size of water-breathing ectotherms is limited by an insufficient amount of oxygen that is supplied to meet metabolic demand once a threshold of gill surface area to body weight ratio is surpassed. Here we employed generalised additive models (GAMs)...

The genome of the haptophyte Diacronema lutheri (Pavlova lutheri, Pavlovales)

Chris J Hulatt, René H Wijffels & Matthew C Posewitz
Haptophytes are biogeochemically and industrially important protists, but we know little about their genomic diversity. Here we sequenced the nuclear genome of Diacronema lutheri (Pavlova lutheri, Pavlovales) using third generation PacBio long-read sequencing coupled with Illumina sequencing. The genome was assembled with CANU and subsequently polished using both PacBio and Illumina reads to high consensus accuracy. Genome annotation was performed using BRAKER2 and three sets of RNA-seq evidence. The dataset presented here comprises two files...

Data from: Host-parasite dynamics shaped by temperature and genotype: quantifying the role of underlying vital rates

Marjolein Bruijning, Erlend Fossen, Eelke Jongejans, Héléne Vanvelk, Joost Raeymaekers, Lynn Govaert, Kristien Brans, Sigurd Einum & Luc De Meester
1. Global warming challenges the persistence of local populations, not only through heat-induced stress, but also through indirect biotic changes. We study the interactive effects of temperature, competition and parasitism in the water flea Daphnia magna. 2. We carried out a common garden experiment monitoring the dynamics of Daphnia populations along a temperature gradient. Halfway through the experiment, all populations became infected with the ectoparasite Amoebidium parasiticum, enabling us to study interactive effects of temperature...

Caucasian treasure: genomics sheds light on the evolution of half-extinct Sevan trout, Salmo ischchan, species flock

Boris Levin, Evgeniy Simonov, Bardukh Gabrielyan, Richard Mayden, Sergey Rastorguev, Haikaz Roubenyan, Fedor Sharko & Artem Nedoluzhko
Five ecologically and phenotypically divergent ecomorphs/young species of the genus Salmo are known from a landlocked alpine lake in the Caucasus, Lake Sevan, that was isolated ca. 20 000 years ago by a waterfall. It is an unprecedented example of sympatric diversification within a species-rich lineage with the predominant mode of speciation being allopatric. The main driver of diversification within Sevan trout was spawning resource partitioning. Four lacustrine ecomorphs with different temporal-spatial spawning strategies and...

Smolt outmigration timing in Norway

Robert Lennox, Knut Vollset, Ola Ugedal, Anders Lamberg, Øystein Skaala, Anne Sandvik, Harald Saegrov, Torstein Kristiensen, Arne Jensen, Tormond Haraldstad & Bjørn Barlaup
Aim - Accurate predictions about transition timing of salmon smolts between freshwater and marine environments are key to effective management. We aimed to use available data on Atlantic salmon smolt migration to predict the emigration timing in rivers throughout Norway. Location - In this study, we used data outmigration timing data of Atlantic salmon (Salmo salar) smolts from 41 rivers collected from 1984-2018 to make a predictive model for the timing of out-migrating salmon smolts...

Tail regeneration alters the digestive performance of lizards

Kostas Sagonas, Aris Deimezis-Tsikoutas, Aikaterini Reppa, Iro Domenikou, Mirto Papafoti, Konstantina Synevrioti, Ioanna Polydouri, Anneta Voutsela, Aristoula Bletsa, Niki Karambotsi, Panayiotis Pafilis & Efstratios Valakos
Tissue regeneration is a fundamental evolutionary adaptation, which is well known in lizards that can regenerate their entire tail. However, numerous parameters of this process remain poorly understood. Lizard tail serves many functions. Thus, tail autotomy comes with many disadvantages and the need for quick regeneration is imperative. To provide the required energy and materials for caudal tissue building, lizards are expected to undergo a number of physiological and biochemical adjustments. Previous research showed that...

Registration Year

  • 2021

Resource Types

  • Dataset
  • Collection
  • Text


  • Nord University
  • Norwegian Institute for Nature Research
  • Norwegian University of Science and Technology
  • Uppsala University
  • Södertörn University
  • Princeton University
  • Kurchatov Institute
  • Tokyo University of Agriculture and Technology
  • University of Tromsø - The Arctic University of Norway
  • Lund University