Opin vísindi

Browsing Greinar- HÍ by Department "Líf- og umhverfisvísindadeild (HÍ)"

Browsing Greinar- HÍ by Department "Líf- og umhverfisvísindadeild (HÍ)"

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  • Palsson, Arnar; Gibson, Greg (Genetics Society of America, 2004-07-01)
    As part of an effort to dissect quantitative trait locus effects to the nucleotide level, association was assessed between 238 single-nucleotide and 20 indel polymorphisms spread over 11 kb of the Drosophila melanogaster Egfr locus and nine relative ...
  • Holt, RE; Woods, PJ; Ferreira, ASA; Bardarson, Hlynur; Bonanomi, S; Boonstra, WJ; Butler, Will E.; Diekert, FK; Fouzai, N; Holma, M; Kokkalis, A; Kvile, KØ; Macdonald, Jed I.; Malanski, E; Nieminen, E; Ottosen, KM; Pedersen, MW; Richter, A; Rogers, L; Romagnoni, G; Snickars, M; Törnroos, A; Weigel, B; Whittington, JD; Yletyinen, J (Inter-Research Science Center, 2017-12-27)
    As the world’s social-environmental problems increasingly extend across boundaries, both disciplinary and political, there is a growing need for interdisciplinarity, not only in research per se, but also in doctoral education. We present the common ...
  • Schmid, Magdalena Maria E; Zori, Davide; Erlendsson, Egill; Batt, Cathy; Damiata, Brian N; Byock, Jesse (SAGE Publications, 2017-06-22)
    Icelandic settlement (Landnám) period farmsteads offer opportunities to explore the nature and timing of anthropogenic activities and environmental impacts of the first Holocene farming communities. We employ Bayesian statistical modelling of archaeological, ...
  • Macdonald, Jed I.; Logemann, Kai; Krainski, Elias T.; Sigurðsson, Þorsteinn; Beale, Colin M.; Huse, Geir; Hjøllo, Solfrid S.; Marteinsdóttir, Guðrún (Wiley, 2017-09-13)
    Social learning can be fundamental to cohesive group living, and schooling fishes have proven ideal test subjects for recent work in this field. For many species, both demographic factors, and inter‐ (and intra‐) generational information exchange are ...
  • Kreiling, Agnes-Katharina; Olafsson, Jon S.; Palsson, Snaebjorn; Kristjansson, Bjarni K. (PAGEPress Publications, 2018-05-31)
    In 1937, S.L. Tuxen studied the animal community of hot springs in Iceland, and classified springs according to their relative temperature into cold, tepid, and hot. Eighty years after Tuxen’s study, we revisited some of the hot springs in Skagafjörður, ...
  • Káradóttir, Harpa; Nikhil Nitin, Kulkarn; Guðjónsson, Þórarinn; Karason, Sigurbergur; Guðmundsson, Guðmundur Hrafn (PeerJ, 2015-12-07)
    Mechanical ventilation (MV) of patients can cause damage to bronchoalveolar epithelium, leading to a sterile inflammatory response, infection and in severe cases sepsis. Limited knowledge is available on the effects of MV on the innate immune defense ...
  • Guðbrandsson, Jóhannes; Pashay Ahi, Ehsan; Franzdottir, Sigridur Rut; Kapralova, Kalina H.; Kristjansson, Bjarni K.; Steinhäuser, Sophie S.; Maier, Valerie H.; Johannesson, Isak M.; Snorrason, Sigurdur S.; Jonsson, Zophonias O.; Palsson, Arnar (F1000 Research, Ltd., 2016-12-02)
    Species and populations with parallel evolution of specific traits can help illuminate how predictable adaptations and divergence are at the molecular and developmental level. Following the last glacial period, dwarfism and specialized bottom feeding ...
  • Pashay Ahi, Ehsan; Steinhäuser, Sophie S.; Palsson, Arnar; Franzdottir, Sigridur Rut; Snorrason, Sigurdur S.; Maier, Valerie H.; Jónsson, Zophonías Oddur (Springer Nature, 2015-09-16)
    Background The developmental basis of craniofacial morphology hinges on interactions of numerous signalling systems. Extensive craniofacial variation in the polymorphic Arctic charr, a member of the salmonid family, from Lake Thingvallavatn (Iceland), ...
  • Guðbrandsson, Jóhannes; Franzdottir, Sigridur Rut; Kristjansson, Bjarni K.; Pashay Ahi, Ehsan; Maier, Valerie H.; Kapralova, Kalina H.; Snorrason, Sigurdur S; Jónsson, Zophonías Oddur; Palsson, Arnar (PeerJ, 2018-02-07)
    Phenotypic differences between closely related taxa or populations can arise through genetic variation or be environmentally induced, leading to altered transcription of genes during development. Comparative developmental studies of closely related ...
  • Kapralova, Kalina H.; Guðbrandsson, Jóhannes; Reynisdottir, Sigrun; Santos, Cristina B.; Baltanás, Vanessa C; Maier, Valerie H. untranslated; Snorrason, Sigurdur S.; Palsson, Arnar (Public Library of Science (PLoS), 2013-07-24)
    Northern freshwater fish may be suitable for the genetic dissection of ecological traits because they invaded new habitats after the last ice age (∼10.000 years ago). Arctic charr (Salvelinus alpinus) colonizing streams and lakes in Iceland gave rise ...
  • Gagunashvili, Andrey; Andrésson, Ólafur (Springer Nature, 2018-06-05)
    Background Cyanobacteria of the genus Nostoc are capable of forming symbioses with a wide range of organism, including a diverse assemblage of cyanolichens. Only certain lineages of Nostoc appear to be able to form a close, stable symbiosis, raising ...
  • Katrínardóttir, Borgný; Alves, Jose; Sigurjónsdóttir, Hrefna; Hersteinsson, Páll; Gunnarsson, Tomas Gretar (Public Library of Science (PLoS), 2015-07-10)
    Distinct preference of species for habitats is most often driven by long term differences in demographic rates between habitats. Estimating variation in those rates is key for developing successful conservation strategies. Stochastic events can interact ...
  • Sturludottir, Erla; Desjardins, Christopher David; Elvarsson, Bjarki; Fulton, Elizabeth A.; Gorton, Rebecca; Logemann, Kai; Stefansson, Gunnar (Elsevier BV, 2018-11)
    Icelandic waters are very productive and the fisheries are economically important for the Icelandic nation. The importance of the fisheries has led to progressive fisheries management and extensive monitoring of the ecosystem. However, fisheries ...
  • Gowers, Glen-Oliver. F.; Vince, Oliver; Charles, John-Henry; Klarenberg, Ingeborg J.; Ellis, Tom; Edwards, Arwyn (MDPI AG, 2019-11-07)
    Microbial communities in remote locations remain under-studied. This is particularly true on glaciers and icecaps, which cover approximately 11% of the Earth’s surface. The principal reason for this is the inaccessibility of most of these areas due ...
  • Hördur; Olafsdottir, Rannveig (MDPI AG, 2018-12-15)
    Tourism is a complex industry involving numerous types of activities that can have adverse environmental impacts and, over time, gradually change the way tourists experience tourist destinations and their choice of particular tourist destinations. The ...
  • Stenkewitz, Ute; Nielsen, Ólafur K.; Skirnisson, Karl; Stefansson, Gunnar (Bio One, 2017-06)
    Feather holes have traditionally been suggested to be feeding traces of chewing lice (mallophagans). There is controversy whether mallophagans are the real source of feather holes. We studied mallophagan infestations and holes in tail feathers of 528 ...
  • Sæþórsdóttir, Anna; Hall, C. Michael (MDPI AG, 2018-07-04)
    It is of vital importance that nature-based tourist destinations maintain their natural resources in a sustainable way. Nature and wilderness are the main attractions for tourism in Iceland. The Central Highlands are uninhabited with little visible ...
  • Ævarsdóttir, Hrafnhildur; Thorhallsdottir, Anna Gudrun; Sigurjónsdottir, Hrefna (Agricultural University of Iceland, 2016-06)
    The Icelandic goat is an indigenous breed, descendant of goats brought to Iceland by Nordic and Celtic settlers in the 9th century (Adalsteinsson 1981). The population is estimated to have been below 1000 individuals for centuries and critically ...
  • Ludwig, Michael Z; Palsson, Arnar; Alekseeva, Elena; Bergman, Casey M; Nathan, Janaki; Kreitman, Martin (Public Library of Science (PLoS), 2005-03-15)
    Lack of knowledge about how regulatory regions evolve in relation to their structure–function may limit the utility of comparative sequence analysis in deciphering cis-regulatory sequences. To address this we applied reverse genetics to carry out a ...
  • Guðmundsdóttir, Petra Landmark; Andrésson, Ólafur (Agricultural University of Iceland, 2019)
    Fungal distribution in a liverwort-based biocrust was examined at different depths (0, 5 and 20 mm) by direct counting using both light and fluorescence microscopy. The DNA-based taxonomic composition of fungi was also determined and differences between ...