16 Works

Data from: Fish culling reduces tapeworm burden in Arctic charr by increasing parasite mortality rather than by reducing density‐dependent transmission

Eirik Haugstvedt Henriksen, André Frainer, Rune Knudsen, Roar Kristoffersen, Armand M. Kuris, Kevin D. Lafferty & Per-Arne Amundsen
1. Two common Dibothriocephalus (formerly Diphyllobothrium) tapeworm species were significantly reduced by experimental culling of their fish host Arctic charr (Salvelinus alpinus) in a subarctic lake. 2. Between 1984 and 1991, funnel traps were used to cull ~ 35 metric tons of Arctic charr, reducing charr density by ~ 80%. As charr densities decreased, tapeworm prevalence and then intensity also declined over the following three decades, with D. dendriticus (formerly dendriticum) responding faster than D....

Persistence of arctic-alpine flora during 24,000 years of environmental change in the Polar Urals

Charlotte Clarke, Mary Edwards, Ludovic Gielly, Dorothee Ehrich, Paul Hughes, Liudmila Morozova, Haflidi Haflidason, Jan Mangerud, John Inge Svendsen & Inger Alsos
Plants adapted to extreme conditions can be at high risk from climate change; arctic-alpine plants, in particular, could “run out of space” as they are out-competed by expansion of woody vegetation. Mountain regions could potentially provide safe sites for arctic-alpine plants in a warmer climate, but empirical evidence is fragmentary. Here we present a 24,000-year record of species persistence based on sedimentary ancient DNA (sedaDNA) from Lake Bolshoye Shchuchye (Polar Urals). We provide robust evidence...

Data from: Sámi knowledge and ecosystem-based adaptation strategies for managing pastures under threat from multiple land uses

Sigrid Engen & Vera Hausner
1. Ecosystem-based adaptation (EbA) relies upon the capacity of ecosystems to buffer communities against the adverse impacts of climate change. Maintaining ecosystems that deliver critical services to communities can also provide co-benefits beyond adaptation, such as climate mitigation and protection of biological diversity and livelihoods. EbA has to a limited extent drawn upon indigenous-and local knowledge (ILK) for defining critical services and for implementing EbA in decision-making. This is a paradox given that the primary...

Data from: Trophic interactions and abiotic factors drive functional and phylogenetic structure of vertebrate herbivore communities across the Arctic tundra biome

James D.M. Speed, Ina A. Skjelbred, Isabel C. Barrio, Michael D. Martin, Dominique Berteaux, C. Guillermo Bueno, Katie S. Christie, Bruce C. Forbes, Jennifer Forbey, Daniel Fortin, Jon-Arvid Grytnes, Katrine S. Hoset, Nicolas Lecomte, Bryndis Marteinsdottir, Jesper B. Mosbacher, Åshild O. Pedersen, Virve Ravolainen, Eileen C. Rees, Anna Skarin, Natalya Sokolova, Andrew H. Thornhill, Ingunn Tombre & Eeva M. Soininen
Communities are assembled from species that evolve or colonise a given geographic region, and persist in the face of abiotic conditions and interactions with other species. The evolutionary and colonisation histories of communities are characterised by phylogenetic diversity, while functional diversity is indicative of abiotic and biotic conditions. The relationship between functional and phylogenetic diversity infers whether species functional traits are divergent (differing between related species) or convergent (similar among distantly related species). Biotic interactions...

Data from: Assessing the effect of predator control on an endangered goose population subjected to predator-mediated food web dynamics

Filippo Marolla, Tomas Aarvak, Ingar Jostein Øien, Jarad Pope Mellard, John-André Henden, Sandra Hamel, Audun Stien, Torkild Tveraa, Nigel G. Yoccoz & Rolf A. Ims
1. Assessing the effectiveness of conservation actions to halt population declines is challenging when confounded by other factors. We assessed whether culling of red fox, a predator currently increasing in the sub-Arctic, contributed to recent recovery of the critically endangered Fennoscandian population of Lesser White-fronted Goose Anser erythropus, while controlling for potentially confounding food web dynamics. 2. Using 19 years of data, 10 before and 9 after the implementation of annual red fox culling, we...

Data from: Spatial synchrony in sub-arctic geometrid moth outbreaks reflects dispersal in larval and adult lifecycle stages

Ole Petter L. Vindstad, Jane U. Jepsen, Nigel G. Yoccoz, Ottar N. Bjornstad, Michel D.S. Mesquita & Rolf A. Ims
1. Spatial synchrony in population dynamics can be caused by dispersal or spatially correlated variation in environmental factors like weather (Moran effect). Distinguishing between these mechanisms is challenging for natural populations, and the study of dispersal-induced synchrony in particular has been dominated by theoretical modelling and laboratory experiments. 2. The goal of the present study was to evaluate the evidence for dispersal as a cause of meso-scale (distances of tens of kilometers) spatial synchrony in...

Data from: When spring ephemerals fail to meet pollinators: mechanism of phenological mismatch and its impact on plant reproduction

Gaku Kudo & Elisabeth Cooper
The flowering phenology of early-blooming plants is largely determined by snowmelt timing in high-latitude and high-altitude ecosystems. When the synchrony of flowering and pollinator emergence is disturbed by climate change, seed production may be restricted due to insufficient pollination success. We revealed the mechanism of phenological mismatch between a spring ephemeral (Corydalis ambigua) and its pollinator (overwintered bumble bees), and its impact on plant reproduction, based on 19 years of monitoring and a snow removal...

Predation risk and mountain goat reproduction: Evidence for stress-induced breeding suppression in a wild ungulate

Frédéric Dulude-De Broin, Sandra Hamel, Gabriela F. Mastromonaco & Steeve D. Côté
Abstract 1. Non-consumptive effects of predation can strongly impact reproduction and demography of prey species. Still, the underlying mechanisms that drive non-consumptive effects are not fully understood, and the circumstances under which chronic physiological stress may mediate these effects remain unclear. 2. Benefiting from over 23 years of environmental, physiological and demographic data, we tested the hypothesis that predation risk may impair reproduction of mountain goats through chronic elevation of physiological stress. We conducted path...

Data from: Getting ready for the winter: timing and determinants of molt in an alpine ungulate

Florent Déry, Sandra Hamel & Steeve D. Côté
Because growth of new hairs entails energetic costs, individual condition and access to food should determine the timing of molt. Previous studies on the timing of molt in ungulates have mostly focused on the influence of age-class and reproductive status, but the effects of body condition and environmental phenology have not been evaluated. Our goal was to assess how intrinsic traits and environmental conditions determine the timing of winter coat shedding in a mountain goat...

Data from: Maternal longevity and offspring sex in wild ungulates

Mathieu Douhard, Marco Festa-Bianchet, Sandra Hamel, Dan Nussey, Steeve Côté, Josephine Pemberton & Fanie Pelletier
In species with sexual size dimorphism, offspring of the larger sex usually have greater energy requirements and may lead to greater fitness costs for parents. The effects of offspring sex on maternal longevity, however, have only been tested in humans. Human studies produced mixed results and considerable debate mainly due to the difficulty of distinguishing the effects of sexual dimorphism from sociocultural factors. To advance this debate, we examined how the relative number of sons...

Data from: Genetic changes caused by restocking and hydroelectric dams in demographically bottlenecked brown trout in a transnational subarctic riverine system

Cornelya F. C. Klutsch, Simo N. Maduna, Natalia Polikarpova, Kristin Forfang, Paul Eric Aspholm, Tommi Nyman, Hans Geir Eiken, Per-Arne Amundsen & Snorre B. Hagen
Habitat discontinuity, anthropogenic disturbance, and overharvesting have led to population fragmentation and declines worldwide. Preservation of remaining natural genetic diversity is crucial to avoid continued genetic erosion. Brown trout (Salmo trutta L.) is an ideal model species for studying anthropogenic influences on genetic integrity, as it has experienced significant genetic alterations throughout its natural distribution range due to habitat fragmentation, overexploitation, translocations, and stocking. The Pasvik River is a subarctic riverine system shared between Norway,...

Data from: Climate warming is predicted to enhance the negative effects of harvesting on high-latitude lake fish populations

Aslak Smalås, John Strøm, Per-Arne Amundsen, Ulf Dieckmann & Raul Primicerio
1. Ecosystems at high latitudes are exposed to some of the highest rates of climate warming on earth, and freshwater ecosystems in those regions are already experiencing extended ice-free seasons and warmer waters. The dominant fish species in these ecosystems are cold-water salmonids, which play a central ecological role in lake ecosystems, where they are often exposed to size-selective fisheries that truncate their size- and age-distributions, making them potentially vulnerable to exploitation and environmental perturbations....

Data from: Nest association between two predators as a behavioral response to the low density of rodents

Ivan Pokrovsky, Dorothée Ehrich, Rolf Anker Ims, Ivan Fufachev, Olga Kulikova, Aleksandr Sokolov, Natalia Sokolova, Vasily Sokolov & Nigel Gilles Yoccoz
Many birds nest in association with aggressive birds of other species to benefit from their protection against predators. We hypothesized that the protective effect also could extend to foraging resources, whereby the resultant resource enriched habitats near a nest of aggressive raptors could be an alternative cause of associations between nesting bird species with non-overlapping foraging niches. In the Arctic, the Rough-legged Hawk (Buteo lagopus) and the Peregrine Falcon (Falco peregrinus) are 2 raptor species...

Community weighted mean traits of multi-trophic communities in the Baltic Sea

Laurene Pecuchet
The dataset contains the time-series of community weighted mean traits of four organism groups (phytoplankton, zooplankton, benthos, fish) in three different areas of the Baltic Sea and the associated R code to make the figures as in Pecuchet et al. Ecography

Marine fish traits follow fast-slow continuum across oceans

Esther Beukhof, Romain Frelat, Laurene Pecuchet, Aurore Maureaud, Tim Spaanheden Dencker, Jón Sólmundsson, Antonio Punzón, Raul Primicerio, Manuel Hidalgo, Christian Möllmann & Martin Lindegren
A fundamental challenge in ecology is to understand why species are found where they are and predict where they are likely to occur in the future. Trait-based approaches may provide such understanding, because it is the traits and adaptations of species that determine which environments they can inhabit. It is therefore important to identify key traits that determine species distributions and investigate how these traits relate to the environment. Based on scientific bottom-trawl surveys of...

Data from: Biodiversity assessment of tropical shelf eukaryotic communities via pelagic eDNA metabarcoding

Owen S. Wangensteen, Judith Bakker, Stefano Mariani, Charles Baillie, Dayne Buddo, Demian D. Chapman, Austin J. Gallagher, Tristan L. Guttridge & Heidi Hertler
Our understanding of marine communities and their functions in an ecosystem relies on the ability to detect and monitor species distributions and abundances. Currently, the use of environmental DNA (eDNA) metabarcoding is increasingly being applied for the rapid assessment and monitoring of aquatic species. Most eDNA metabarcoding studies have either focused on the simultaneous identification of a few specific taxa/groups or have been limited in geographical scope. Here we employed eDNA metabarcoding to compare beta...

Registration Year

  • 2019

Resource Types

  • Dataset


  • The Arctic University of Norway
  • Norwegian Institute for Nature Research
  • Université Laval
  • Center for Northern Studies
  • University of Bergen
  • Max Planck Institute for Ornithology
  • University of the West Indies
  • Spanish Institute of Oceanography
  • University of Hamburg
  • Université de Sherbrooke