11 Works

Distinctive mitogenomic lineages within populations of white-tailed eagles (Haliaeetus albicilla)

Charles Christian Riis Hansen
Using whole mitochondrial DNA sequences from 89 white-tailed eagles (Haliaeetus albicilla) sampled from Iceland, Greenland, Norway, Denmark and Estonia between 1990-2018, we investigate the mitogenomic variation within and between countries. We show that there is a substantial population differentiation between the countries, reflecting similar major phylogeographic patterns obtained previously for the control region of the mitochondria, which suggested two main refugia during the last glacial period of Ice Age. Distinct mitogenomic lineages are observed within...

Data for Engineering photon statistics in a spinor polariton condensate

Stepan Baryshev, Anton Zasedatelev, Helgi Sigurdsson, Ivan Gnusov, Alexis Askitopoulos & Pavlos Lagoudakis
Experimental data and numerical simulation results used to create the figures in the paper Baryshev, S., Zasedatelev, A., Sigurdsson, H., Gnusov, I., Töpfer, J.D., Askitopoulos, A., & Lagoudakis, P.G. (2022) Engineering photon statistics in a spinor polariton condensate. Physical Review Letters.

Subarctic afforestation: effects of forest plantations on ground-nesting birds in lowland Iceland

Aldís E. Pálsdóttir, Jennifer Gill, Jose Alves, Snaebjörn Palsson, Verónica Méndez, Harry Ewing & Tómas Gunnarsson
Planting forests is a commonly suggested measure to mitigate climate change. The resulting changes in habitat structure can greatly influence the diversity and abundance of pre-existing wildlife. Understanding these consequences is key for avoiding unintended impacts of afforestation on habitats and populations of conservation concern. Afforestation in lowland Iceland has been gaining momentum in recent years and further increases are planned. Iceland supports internationally important breeding populations of several ground-nesting, migratory bird species that mostly...

Data for: Andic soil properties and tephra layers hamper C turnover in Icelandic peatlands - selective dissolution of Al, Fe, Si and decomposition proxies

Susanne Claudia Möckel, Egill Erlendsson & Guðrún Gísladóttir
Due to frequent volcanic activity and erosion of dryland soils, peatlands in Iceland receive regular additions of mineral aeolian deposits (tephra and eroded material). Therefore, their soils may develop not only histic, but also andic characteristics. Here we present data sets of a study that elucidates interactions between carbon characteristics and andic soil properties in Histosols of three Icelandic peatlands. The data sets contain information about the soil carbon structure derived by 13C NMR spectroscopy,...

Otolith annual growth increments for cod populations in the Northeast Atlantic

Steven Campana
Large-scale, climate-induced synchrony in the productivity of fish populations is becoming more pronounced in the world’s oceans. As synchrony increases, a population’s ‘portfolio’ of responses can be diminished, in turn reducing its resilience to strong perturbation. Here we argue that the costs and benefits of trait synchronization, such as the expression of growth rate are context dependent. Synchrony among individuals could actually be beneficial for populations if growth is optimized during favourable conditions and then...

Data from: Environmental change alters nitrogen fixation rates and microbial parameters in a subarctic biological crust

Alejandro Salazar, Denis Warshan, Clara Vásquez & Ólafur Andrésson
Together, Biological Soil Crust (BSC) and other cryptogamic groundcovers can contribute up to half of the global nitrogen (N) fixation. BSC also stabilizes the soil (reducing erosion and dust emissions), fixes carbon (C), retains moisture, and acts as a hotspot of microbial diversity and activity. Much of the knowledge about how climate change is affecting the composition and functioning of BSC comes from hot arid and semiarid regions. The comparatively smaller body of research on...

Reykjanes Seismic Network

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Temporary network to monitor the seismic crisis on the Reykjanes Peninsula during 2020. The network started around the village of Grindavik, but has since expanded to cover much of the Reykjanes Peninsula. Sensors are primarily Guralp Certimus with a number of Guralp 6TD and 3ESPCD units also deployed.

Effects of pair migratory behaviour on breeding phenology and success in a partially migratory shorebird population

Verónica Méndez, Jose Alves, Jennifer Gill, Böðvar Þórisson, Camilio Carneiro, Aldís Pálsdóttir, Sölvi Vignisson & Tomas Gunnarsson
In migratory systems, variation in individual phenology can arise through differences in individual migratory behaviours, and this may be particularly apparent in partial migrant systems, where migrant and resident individuals are present within the same population. Links between breeding phenology and migratory behaviour or success are generally investigated at the individual level. However, for breeding phenology in particular, the migratory behaviours of each member of the pair may need to be considered simultaneously, as breeding...

Circum-Arctic distribution of chemical anti-herbivore compounds arctic shrubs

Elin Lindén, Mariska Te Beest, Ilka Abreu, Thomas Moritz, Maja Sundqvist, Isabel C Barrio, Julia Boike, John Bryant, Kari Anne Bråthen, Agata Buchwal, Guillermo Bueno, Alain Cuerrier, Dagmar Egelkraut, Bruce Forbes, Martin Hallinger, Monique Heijmans, Luise Hermanutz, David S Hik, Annika Hofgaard, Milena Holmgren, Diane C Huebner, Toke Hoye, Ingibjörg Jónsdóttir, Elina Kaarlejärvi, Emilie Kissler … & Johan Olofsson
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...

Evaluation of four methods to identify the homozygotic sex chromosome in small populations

Charles Christian Riis Hansen, Kristen Westfall & Snæbjörn Pálsson
Whole genomes are commonly assembled into a collection of scaffolds and often lack annotations of autosomes, sex chromosomes and, and organelle genomes (i.e., mitochondrial and chloroplast). As these chromosome types can have highly disparate evolutionary histories, it is imperative to take this information into account when analyzing genomic variation. Here we assessed the accuracy of four methods for identifying the homogametic sex chromosome using two whole genome sequenced (WGS) and 133 RAD sequenced white-tailed eagles...

Plate boundary deformation at the Azores triple junction determined from continuous GPS geodetic measurements, 2000-2017

João D'Araújo, Freysteinn Sigmundsson, Teresa Ferreira, Jun Okada, Maria Lorenzo & Rita Silva
Ground deformation in the Azores, at the triple junction between the Eurasian, Nubian, and North American plates, has been mapped with continuous GPS (Global Positioning System) geodetic measurements to improve tectonic motion estimates and for understanding volcanic unrest. We compute daily GPS positions, spanning almost 17 years (2000-2017), from 18 continuous GPS stations. The GPS time-series are analyzed by searching for discontinuities and periodic functions. Results show that Flores and Graciosa islands have displacements close...

Registration Year

  • 2022
    11

Resource Types

  • Dataset
    11

Affiliations

  • University of Iceland
    11
  • University of Aveiro
    2
  • University of East Anglia
    2
  • Agricultural University of Iceland
    2
  • University of Eastern Finland
    1
  • University of Notre Dame
    1
  • University of Greifswald
    1
  • The Arctic University of Norway
    1
  • University Centre of the Westfjords
    1
  • University of Montreal
    1