419 Works

Data from: Demographic influences of translocated individuals on a resident population of house sparrows

Peter S. Ranke, Sigrun Skjelseth, Henrik Pärn, Ivar Herfindal, Åsa Alexandra Borg Borg, Bård Gunner Stokke, Thomas Kvalnes, Thor Harald Ringsby, Bernt-Erik Sæther, Henrik Jensen & Bernt-Erik Saether
Translocation of individuals from source populations to augment small populations facing risk of extinction is an important conservation tool. Here we examine sex-specific differences between resident and translocated house sparrows Passer domesticus in reproductive success and survival, and the contribution of translocated individuals to the growth of a local population. We found evidence for assortative mating based on origin revealed by fewer parentages between translocated males and resident females than expected, and the total number...

Data from: A multimodal image guiding system for Navigated Ultrasound Bronchoscopy (EBUS): a human feasibility study

Hanne Sorger, Erlend Fagertun Hofstad, Tore Amundsen, Thomas Langø, Janne Beate Bakeng & Håkon Olav Leira
Background: Endobronchial ultrasound transbronchial needle aspiration (EBUS-TBNA) is the endoscopic method of choice for confirming lung cancer metastasis to mediastinal lymph nodes. Precision is crucial for correct staging and clinical decision-making. Navigation and multimodal imaging can potentially improve EBUS-TBNA efficiency. Aims: To demonstrate the feasibility of a multimodal image guiding system using electromagnetic navigation for ultrasound bronchoschopy in humans. Methods: Four patients referred for lung cancer diagnosis and staging with EBUS-TBNA were enrolled in the...

Data from: Comparative transcriptomics reveals domestication-associated features of Atlantic salmon lipid metabolism

Yang Jin, Rolf Erik Olsen, Thomas Nelson Harvey, Mari-Ann Østensen, Keshuai Li, Nina Santi, Olav Vadstein, Atle Magnar Bones, Jon Olav Vik, Simen Rød Sandve & Yngvar Olsen
Domestication of animals imposes strong targeted selection for desired traits but can also result in unintended selection due to new domestic environments. Atlantic salmon was domesticated in the 1970s and has subsequently been selected for faster growth in systematic breeding programmes. More recently, salmon aquaculture has replaced fish oils (FO) with vegetable oils (VO) in feed, radically changing the levels of essential long-chain polyunsaturated fatty acids (LC-PUFA). Our aim was to study the impact of...

Data from: Understanding the social dynamics of breeding phenology: indirect genetic effects and assortative mating in a long distance migrant

Maria Moiron, Yimen G. Araya-Ajoy, Céline Teplitsky, Sandra Bouwhuis & Anne Charmantier
Phenological traits, such as the timing of reproduction, are often influenced by social interactions between paired individuals. Such partner effects may occur when pair members affect each other’s pre-breeding environment. Partner effects can be environmentally and/or genetically determined, and quantifying direct and indirect genetic effects is important for understanding the evolutionary dynamics of phenological traits. Here, using 26 years of data from a pedigreed population of a migratory seabird, the common tern ( Sterna hirundo...

Data from: Modeling time to population extinction when individual reproduction is autocorrelated

Aline Magdalena Lee, Bernt-Erik Sæther, Stine Svalheim Markussen, Steinar Engen & Bernt-Erik Saether
In nature, individual reproductive success is seldom independent from year to year, due to factors such as reproductive costs and individual heterogeneity. However, population projection models that incorporate temporal autocorrelations in individual reproduction can be difficult to parameterize, particularly when data are sparse. We therefore examine whether such models are necessary to avoid biased estimates of stochastic population growth and extinction risk, by comparing output from a matrix population model that incorporates reproductive autocorrelations to...

Highways associated with expansion of boreal scavengers into the alpine tundra of Fennoscandia

Lars Rød-Eriksen, Johanna Skrutvold, Ivar Herfindal, Henrik Jensen & Nina Elisabeth Eide
1) Habitat fragmentation may affect species distributions through, for example, altered resource availability and shifts in species interactions. Fragmentation by roads has had negative impacts on Fennoscandian alpine ecosystems, with reduction of habitats and connectivity for alpine species. Concurrently, infrastructure development cause influx of subsidies through roadkills and litter, which may facilitate expansion of boreal scavenging species, such as the red fox (Vulpes vulpes), which may intensify negative interactions with alpine species. Hence, understanding the...

Genotypes of 6 InDel markers for species identification from the Calanus culture at the EMBRC-ERIC laboratory for low-level trophic interactions, NTNU SeaLab

Elise Skottene, Ann M. Tarrant, Dag Altin, Rolf Erik Olsen, Marvin Choquet & Kristina Ø. Kvile
Late developmental stages of marine copepods in the genus Calanus can spend extended periods in a dormant stage (diapause). During the growth season, copepods must accumulate sufficient lipid stores to survive diapause. Predation risk is often overlooked as a potential diapause-inducing cue. We tested experimentally if predation risk in combination with high or low food availability leads to differences in lipid metabolism, and potentially diapause initiation. Expression of lipid metabolism genes showed that food availability...

Data from: Connecting the data landscape of long-term ecological studies: the SPI-Birds data hub

Antica Culina, Zuzana Zajkova, Stefan Vriend, Chloé Nater & Liam Bailey
1. The integration and synthesis of the data in different areas of science is drastically slowed and hindered by a lack of standards and networking programmes. Long-term studies of individually marked animals are not an exception. These studies are especially important as instrumental for understanding evolutionary and ecological processes in the wild. Further, their number and global distribution provides a unique opportunity to assess the generality of patterns and to address broad-scale global issues (e.g....

Data from: Give me a sample of air and I will tell which species are found from your region – molecular identification of fungi from airborne spore samples

Nerea Abrego, Veera Norros, Panu Halme, Panu Somervuo, Heini Ali-Kovero & Otso Ovaskainen
Fungi are a megadiverse group of organisms, they play major roles in ecosystem functioning, and are important for human health, food production, and nature conservation. Our knowledge on fungal diversity and fungal ecology is however still very limited, in part because surveying and identifying fungi is time demanding and requires expert knowledge. We present a method that allows anyone to generate a list of fungal species likely to occur in a region of interest, with...

Data from: On the comparative biology of mammalian telomeres: telomere length co-evolves with body mass, lifespan and cancer risk

Michael Le Pepke & Dan T. A. Eisenberg
Telomeres, the short repetitive DNA sequences that cap the ends of linear chromosomes, shorten during cell division and are implicated in senescence in most species. Telomerase can rebuild telomeres but is repressed in many mammals that exhibit replicative senescence, presumably as a tumor suppression mechanism. It is therefore important to understand the co-evolution of telomere biology and life-history traits that has shaped the diversity of senescence patterns across species. Gomes et al. (2011) produced a...

Data from: Determinants of age at first reproduction and lifetime breeding success revealed by full paternity assignment in a male ungulate

Stine S. Markussen, Ivar Herfindal, Anne Loison, Erling J. Solberg, Hallvard Haanes, Knut H. Røed, Morten Heim, Bernt-Erik Sæther & Bernt-Erik Saether
Age at first reproduction is an important determinant of individual variation in reproductive success in ungulates, but few studies have examined its relationship with later fitness-related traits in males. We used a long-term individual based study of a harvested moose population to quantify the individual reproductive performance and survival of males, as well as to examine the determinants of age at first reproduction and consequences of age at first reproduction on lifetime breeding success. The...

Data from: The burning question: does fire affect habitat selection and forage preference of the black rhinoceros Diceros bicornis in East African savannahs?

T. Michael Anderson, Philbert M. Ngoti, Mawazo L. Nzunda, Daniel M. Griffith, James D.M. Speed, Frode Fossoy, Eivin Roskaft & Bente J. Graae
Endangered species conservation requires information on how management activities influence habitat quality. The black rhinoceros (Diceros bicornus) is critically endangered and restricted to savannas representing ~5% of its historical range. Fire is used extensively in savanna, but little is known about how rhinos respond to burning. Our aim was to understand rhino responses to fire by studying habitat selection and foraging at multiple scales. We used resource selection functions and GPS locations of 31 rhinos...

Data from: Effect of sensor location on continuous intraperitoneal glucose sensing in an animal model

Marte Kierulf Åm, Konstanze Kölle, Anders Lyngvi Fougner, Ilze Dirnena-Fusini, Patrick Christian Bösch, Reinold Ellingsen, Dag Roar Hjelme, Øyvind Stavdahl, Sven Magnus Carlsen & Sverre Christian Christiansen
In diabetes research, the development of the artificial pancreas has been a major topic since continuous glucose monitoring became available in the early 2000's. A prerequisite for an artificial pancreas is fast and reliable glucose sensing. However, subcutaneous continuous glucose monitoring carries the disadvantage of slow dynamics. As an alternative, we explored continuous glucose sensing in the peritoneal space, and investigated potential spatial differences in glucose dynamics within the peritoneal cavity. As a secondary outcome,...

Data from: Differential allocation of parental investment and the trade-off between size and number of offspring

Irja Ida Ratikainen, Thomas Ray Haaland & Jonathan Wright
When parents decide how much to invest in current versus future offspring and how many offspring to divide their current investments between, the optimal decision can be affected by the quality of their partner. This differential allocation (DA) is highly dependent on exactly how partner quality affects reproductive costs and offspring benefits. We present a stochastic dynamic model of DA in which females care for a series of clutches when mated with males of different...

Data from: Annual ring growth of a widespread high-arctic shrub reflects past fluctuations in community-level plant biomass

Mathilde Le Moullec, Agata Buchwal, Rene Van Der Wal, Lisa Sandal & Brage B. Hansen
1. Long time-series of primary production are rarely available, restricting our mechanistic understanding of vegetation and ecosystem dynamics under climate change. Dendrochronological tools are increasingly used instead, particularly in the Arctic – the world’s most rapidly warming biome. Yet, high-latitude plant species are subject to strong energy allocation trade-offs, and whether annual allocations to secondary growth (e.g. ‘tree-rings’) actually reflects primary production above-ground remains unknown. Taking advantage of a unique ground-based monitoring time-series of annual...

Data for: Immigration counter-acts local micro-evolution of a major fitness component: migration-selection balance in free-living song sparrows

Jane Reid, Peter Arcese, Pirmin Nietlisbach, Matthew Wolak, Stefanie Muff, Lisa Dickel & Lukas Keller
Ongoing adaptive evolution, and resulting ‘evolutionary rescue’ of declining populations, requires additive genetic variation in fitness. Such variation can be increased by gene flow resulting from immigration, potentially facilitating evolution. But, gene flow could in fact constrain rather than facilitate local adaptive evolution if immigrants have low additive genetic values for local fitness. Local migration-selection balance and micro-evolutionary stasis could then result. However, key quantitative genetic effects of natural immigration, comprising the degrees to which...

European shag provisioning foraging dives

Astrid Carlsen, Jonathan Wright & Svein-Håkon Lorentsen
Foraging dives in birds and mammals involve complex physiological and behavioural adaptations to cope with the breaks in normal respiration. Optimal dive strategies should maximise the proportion of time spent under water actively foraging versus the time spent on the surface. Oxygen loading and carbon-dioxide dumping carried out on the surface could involve recovery from the consequences of the last dive and/or preparation in anticipation of the next dive depth and duration. However, few studies...

Data from: Density-dependent population dynamics of a high Arctic capital breeder, the barnacle goose

Kate Layton-Matthews, Maarten J.J.E. Loonen, Brage Bremset Hansen, Christophe F. D. Coste, Bernt-Erik Sæther & Vidar Grøtan
1. Density regulation of the population growth rate occurs through negative feedbacks on underlying vital rates, in response to increasing population size. Here, we examine in a capital breeder how vital rates of different life history stages, their elasticities, and population growth rates are affected by changes in population size. 2. We developed an integrated population model for a local population of Svalbard barnacle geese, Branta leucopsis, using counts, reproductive data and individual-based mark-recapture data...

Data from: Functional relations between body mass and risk-taking behavior in wild great tits

Maria Moiron, Yimen G. Araya Ajoy, Kimberley J. Mathot, Alexia Mouchet, Niels J. Dingemanse & Yimen G Araya-Ajoy
Natural selection often favors particular combinations of functionally-related traits, resulting in adaptive phenotypic integration. Phenotypic integration has been proposed as a potential mechanism explaining the existence of repeatable among-individual differences in behavior (i.e., animal personality). In this study, we investigated patterns of covariation between morphology and behavior in a population of free-living great tits (Parus major) monitored for seven years. In particular, we aimed to disentangle the effect of structural size versus body condition on...

Data from: Short‐term insurance versus long‐term bet‐hedging strategies as adaptations to variable environments

Thomas Ray Haaland, Jonathan Wright, Jarle Tufto & Irja Ida Ratikainen
Understanding how organisms adapt to environmental variation is a key challenge of biology. Central to this are bet-hedging strategies that maximize geometric mean fitness across generations, either by being conservative or diversifying phenotypes. Theoretical models have identified environmental variation across generations with multiplicative fitness effects as driving the evolution of bet-hedging. However, behavioral ecology has revealed adaptive responses to additive fitness effects of environmental variation within lifetimes, either through insurance or risk-sensitive strategies. Here we...

Data from: Accounting for interspecific competition and age structure in demographic analyses of density dependence improves predictions of fluctuations in population size

Marlène Gamelon, Stefan J.G. Vriend, Steinar Engen, Frank Adriaensen, Andre A. Dhondt, Simon R. Evans, Erik Matthysen, Ben C. Sheldon & Bernt-Erik Sæther
Understanding species coexistence has long been a major goal of ecology. Coexistence theory for two competing species posits that intraspecific density dependence should be stronger than interspecific density dependence. Great tits and blue tits are two bird species that compete for food resources and nesting cavities. Based on long-term monitoring of these two competing species at sites across Europe, combining observational and manipulative approaches, we show that the strength of density regulation is similar for...

Data from: Dispersal in a house sparrow metapopulation: an integrative case study of genetic assignment calibrated with ecological data and pedigree information

Dilan Saatoglu, Alina K. Niskanen, Markku Kuismin, Peter S. Ranke, Ingerid J. Hagen, Yimen G. Araya-Ajoy, Thomas Kvalnes, Henrik Pärn, Bernt Rønning, Thor Harald Ringsby, Bernt-Erik Sæther, Arild Husby, Mikko J. Sillanpää & Henrik Jensen
Dispersal has a crucial role determining eco-evolutionary dynamics through both gene flow and population size regulation. However, to study dispersal and its consequences, one must distinguish immigrants from residents. Dispersers can be identified using telemetry, capture-mark-recapture (CMR) methods, or genetic assignment methods. All of these methods have disadvantages, such as, high costs and substantial field efforts needed for telemetry and CMR surveys, and adequate genetic distance required in genetic assignment. In this study, we used...

A scoping review of studies into crisis resolution teams in community mental health services

Katrine Høyer Holgersen, Sindre Andre Pedersen, Heidi Brattland & Torfinn Hynnekleiv
Crisis Resolution Teams (CRT) for rapid assessment and short-term treatment of mental health problems have increasingly been implemented internationally over the last decades. Among the Nordic countries, the CRT model has been particularly influential in Norway, where ‘Ambulante akutteam (AAT)’ is a widespread psychiatric emergency service for adult patients. However, the clinical practice of these teams varies significantly. To aid further development of the service and guide future research efforts, we carried out a scoping...

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...

Dataset for Collision of Dynamic Jamming Fronts in a Dense Suspension

Olav Rømcke, Ivo Peters & R. Jason Hearst
This dataset supports the publication: 'Collision of Dynamic Jamming Fronts in a Dense Suspension' by Olav Rømcke, Ivo R. Peters and R. Jason Hearst, Physical Review Fluids (2021)

Registration Year

  • 2023
    7
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    29
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    43
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    20
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    25
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    16
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Affiliations

  • Norwegian University of Science and Technology
    419
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