11 Works

Data from: Functional traits, not productivity, predict openness to seedling recruitment in alpine plant communities under climatic warming

Eric Meineri, Kari Klanderud, John Guittar, Deborah Goldberg & Vigdis Vandvik
Understanding the degree to which plant communities are open to seedling recruitment is key to predicting how they will be impacted by climate change. We experimentally assessed whether communities assembled under colder climates were inherently more open to recruitment than warmer-climate communities, after controlling for differences in the current climate under which the communities were growing. We then tested whether variation in openness to recruitment could be explained by community biomass or by the plant...

Auditing Grey in a CRIS Environment

Keith Jeffery & Anne Asserson
We define grey as information that is not peer reviewed scholarly publications. In the CRIS (Current Research Information System) domain Grey includes not only non-peer reviewed publications (typically technical papers) but also performance art, art artifacts, design documents, models (e.g. for engineering or architecture) and – increasingly importantly – research datasets. Recently national governments - inspired by the work of W3C on LOD (Linked Open Data in the context of the Semantic Web) – have...

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: Catastrophic dynamics limit Atlantic cod recovery

Camilla Sguotti, Saskia Otto, Romain Frelat, Tom Langbehn, Marie Plambech Ryberg, Martin Lindegren, Joel Durant, Nils Stenseth & Christian Möllmann
Collapses and regime changes are pervasive in complex systems (such as marine ecosystems) governed by multiple stressors. The demise of Atlantic cod (Gadus morhua) stocks constitutes a text book example of the consequences of overexploiting marine living resources, yet the drivers of these nearly synchronous collapses are still debated. Moreover, it is still unclear why rebuilding of collapsed fish stocks such as cod is often slow or absent. Here we apply the stochastic cusp model,...

Data from: Fusion pore regulation by cAMP/Epac2 controls cargo release during insulin exocytosis

Alenka Guček, Nikhil R. Gandasi, Muhmmad Omar-Hmeadi, Marit Bakke, Stein O. Døskeland, Anders Tengholm & Sebastian Barg
Regulated exocytosis establishes a narrow fusion pore as initial aqueous connection to the extracellular space, through which small transmitter molecules such as ATP can exit. Co-release of polypeptides and hormones like insulin requires further expansion of the pore. There is evidence that pore expansion is regulated and can fail in diabetes and neurodegenerative disease. Here we report that the cAMP-sensor Epac2 (Rap-GEF4) controls fusion pore behavior by acutely recruiting two pore-restricting proteins, amisyn and dynamin-1,...

Data from: Phylogenomics of Aplacophora (Mollusca, Aculifera) and a solenogaster without a foot

Kevin M. Kocot, Christiane Todt, Nina T. Mikkelsen & Kenneth M. Halanych
Recent molecular phylogenetic investigations strongly supported placement of the shell-less, worm-shaped aplacophoran molluscs (Solenogastres and Caudofoveata) and chitons (Polyplacophora) in a clade called Aculifera, which is the sister taxon of all other molluscs. Thus, understanding the evolutionary history of aculiferan molluscs is important for understanding early molluscan evolution. In particular, fundamental questions about evolutionary relationships within Aplacophora have long been unanswered. Here, we supplemented the paucity of available data with transcriptomes from 25 aculiferans and...

Data from: Patterns of modern pollen and plant richness across northern Europe

Triin Reitalu, Anne E. Bjune, Ansis Blaus, Thomas Giesecke, Aveliina Helm, Isabelle Matthias, Sylvia H. Peglar, J. Sakari Salonen, Heikki Seppa, Vivika Väli & H. John B. Birks
1. Sedimentary pollen offers excellent opportunities to reconstruct vegetation changes over past millennia. Number of different pollen taxa or pollen richness is used to characterise past plant richness. To improve the interpretation of sedimentary pollen richness, it is essential to understand the relationship between pollen and plant richness in contemporary landscapes. This study presents a regional-scale comparison of pollen and plant richness from northern Europe and evaluates the importance of environmental variables on pollen and...

Data from: Quantitative and qualitative consequences of reduced pollen loads in a mixed-mating plant

Laura S. Hildesheim
Greater pollination intensity can enhance maternal plant fitness by increasing seed set and seed quality as a result of more intense pollen competition or enhanced genetic sampling. We tested experimentally these effects by varying the pollen load from a single pollen donor on stigmas of female flowers of Dalechampia scandens (Euphorbiaceae) and measuring the effects on seed number and seed mass. Seed set increased rapidly with pollen number at low to moderate pollen loads, and...

Mobbeforskingas historie – forminga av eit forskingsfelt

Cecilie Boge
Abstract: Until the second half of the 1960s, children’s relations caught little attention among adults and science as such. This changed dramatically when the concept of “mobbing” was introduced around 1970. Today, “mobbing” or bullying, is an acknowledged problem in schools all over the world, and has spurred prevention programs and a successful field of research. Through studies of historical sources, such as research literature, newspapers and political documents from the early 1970s and onward,...

Data from: Repeatability of adaptive radiation depends on spatial scale: regional versus global replicates of stickleback in lake versus stream habitats

Antoine Paccard, Dieta Hanson, Yoel E Stuart, Frank A Von Hippel, Martin Kalbe, Tom Klepaker, Skúli Skúlason, Bjarni K Kristjánsson, Daniel I Bolnick, Andrew P Hendry & Rowan D H Barrett
The repeatability of adaptive radiation is expected to be scale dependent, with determinism decreasing as greater spatial separation among “replicates” leads to their increased genetic and ecological independence. Threespine stickleback (Gasterosteus aculeatus) provide an opportunity to test whether this expectation holds for the early stages of adaptive radiation -their diversification in freshwater ecosystems has been replicated many times. To better understand the repeatability of that adaptive radiation, we examined the influence of geographic scale on...

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...

Registration Year

  • 2019
    11

Resource Types

  • Dataset
    9
  • Text
    2

Affiliations

  • University of Bergen
    11
  • The Arctic University of Norway
    2
  • University of Tartu
    2
  • Hólar University College
    1
  • University of Hamburg
    1
  • The University of Texas at Austin
    1
  • University of Michigan–Ann Arbor
    1
  • Estonian University of Life Sciences
    1
  • McGill University
    1
  • Center for Northern Studies
    1