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Browsing by Subject "Vistfræði"

Browsing by Subject "Vistfræði"

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  • Parts, Kaarin; Tedersoo, Leho; Schindlbacher, Andreas; Sigurdsson, Bjarni D.; Leblans, Niki; Oddsdóttir, Edda Sigurdís; Borken, Werner; Ostonen, Ivika (Springer Science and Business Media LLC, 2018-07-09)
    Global warming is predicted to impact high-latitude and high-altitude forests severely, jeopardizing their overall functioning and carbon storage, both of which depend on the warming response of tree fine root systems. This paper investigates the effect ...
  • Gudmundsdottir, Ragnhildur; Kreiling, Agnes-Katharina; Kristjánsson, Bjarni Kristófer; Marteinsson, Viggó; Palsson, Snaebjorn (Public Library of Science (PLoS), 2019-10-02)
    Crangonyx islandicus is a groundwater amphipod endemic to Iceland, considered to have survived the Ice Ages in subglacial refugia. Currently the species is found in spring sources in lava fields along the tectonic plate boundary of the country. The ...
  • Mačić, Vesna; Albano, Paolo G.; Almpanidou, Vasiliki; Claudet, Joachim; Corrales, Xavier; Essl, Franz; Evagelopoulos, Athanasios; Giovos, Ioannis; Jimenez, Carlos; Kark, Salit; Marković, Olivera; Mazaris, Antonios D.; Ólafsdóttir, Guðbjörg Ásta; Panayotova, Marina; Petović, Slavica; Rabitsch, Wolfgang; Ramdani, Mohammed; Rilov, Gil; Tricarico, Elena; Vega Fernández, Tomás; Sini, Maria; Trygonis, Vasilis; Katsanevakis, Stelios (Frontiers Media SA, 2018-05-25)
    Biological invasions threaten biodiversity in terrestrial, freshwater and marine ecosystems, requiring substantial conservation and management efforts. To examine how the conservation planning literature addresses biological invasions and if planning ...
  • Rosenstock, Nicholas; Ellström, Magnus; Oddsdóttir, Edda Sigurdís; Sigurdsson, Bjarni D.; Wallander, Håkan (Elsevier BV, 2019-08)
    Soil warming (0–5.5 °C above controls) effects on ectomycorrhizal growth, carbon sequestration and community composition were examined in a Picea sitchensis forest spanning a geothermal gradient in Iceland. Fungal communities were assayed with sand-filled ...
  • Méndez, Verónica; Gill, Jennifer A.; Alves, Jose; Burton, Niall H. K.; Davies, Richard G. (Wiley-Blackwell, 2017-09-20)
    Aim Population size changes can lead to changes in local abundance and/or site occupancy, depending on the processes influencing site use by individuals. Here, we quantify such changes for wintering waterbirds and assess their implications for widely ...
  • Larranaga, Nicolas; Valdimarsson, S.K.; Linnansaari, T.; Steingrímsson, Stefán Óli (Wiley, 2018-02-28)
    Streams fluctuate in water flow because of natural (e.g., rain) and human‐induced events (e.g., hydropeaking). Magnitude, frequency, and predictability of these events can have drastic consequences for fish populations. We studied how rapid modifications ...
  • Alkalaj, Jovana; Hrafnsdottir, Thora; Ingimarsson, Finnur; Smith, Robin J; Kreiling, Agnes-Katharina; Mischke, Steffen (Oxford University Press (OUP), 2019-04-25)
    Ostracods in Icelandic freshwaters have seldom been researched, with the most comprehensive record from the 1930s. There is a need to update our knowledge of the distribution of ostracods in Iceland as they are an important link in these ecosystems as ...
  • Nyamweya, Chrispine (University of Iceland, School of Engineering and Natural Sciences, Faculty of Physical Sciences, 2017-01)
    Lake Victoria is of immense ecological and socio-economic significance for the riparian communities. However, the lake is faced with human induced pressures such as overfishing, introduction of alien species, increased eutrophication and climate change ...
  • 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 ...
  • Nilsson, Christer; Aradottir, Ása L.; Hagen, Dagmar; Halldórsson, Guðmundur; Høegh, Kenneth; Mitchell, Ruth J.; Raulund-Rasmussen, Karsten; Svavarsdóttir, Kristín; Tolvanen, Anne; Wilson, Scott D. (Resilience Alliance, Inc., 2016)
    We developed a conceptual framework for evaluating the process of ecological restoration and applied it to 10 examples of restoration projects in the northern hemisphere. We identified three major phases, planning, implementation, and monitoring, in ...
  • Sturludottir, Erla (Departmento de Publicaciones del CSIC, 2018-12-20)
    Discarding fish has been a part of the fisheries for centuries but it has been very difficult to monitor how much is discarded, especially in areas where it is an illegal activity. In this study the ecological and economic effects of discarding were ...
  • Guðbrandsson, Jóhannes; Kapralova, Kalina; Franzdottir, Sigridur Rut; Bergsveinsdóttir, Þóra Margrét; Hafstað, Völundur; Jónsson, Zophonías Oddur; Snorrason, Sigurður S.; Palsson, Arnar (Wiley, 2019-09-12)
    The availability of diverse ecological niches can promote adaptation of trophic specializations and related traits, as has been repeatedly observed in evolutionary radiations of freshwater fish. The role of genetics, environment, and history in ...
  • Senner, Nathan R.; Verhoeven, Mo A.; Abad-Gómez, José M.; Alves, Jose; Hooijmeijer, Jos Corstiaan Elbert Wouter; Howison, Ruth A.; Kentie, Rosemarie; Loonstra, A. H.Jelle; Masero, Jose A.; Rocha, Afonso D.; Stager, Maria; Piersma, Theunis (Frontiers Media SA, 2019-04-09)
    Few studies have been able to directly measure the seasonal survival rates of migratory species or determine how variable the timing of migration is within individuals and across populations over multiple years. As such, it remains unclear how likely ...
  • Trias, Rosalia; Ménez, Bénédicte; le Campion, Paul; Zivanovic, Yvan; Lecourt, Léna; Lecoeuvre, Aurélien; Schmitt-Kopplin, Philippe; Uhl, Jenny; Gíslason, Sigurður Reynir; Alfreðsson, Helgi A.; Mesfin, Kiflom G.; Snæbjörnsdóttir, Sandra Ósk; Aradóttir, Edda S.; Gunnarsson, Ingvi; Matter, Juerg M.; Stute, Martin; Oelkers, Eric H.; Gérard, Emmanuelle (Springer Nature, 2017-10-20)
    Basalts are recognized as one of the major habitats on Earth, harboring diverse and active microbial populations. Inconsistently, this living component is rarely considered in engineering operations carried out in these environments. This includes ...
  • Boulton, Andrew J.; Ekebom, Jan; Gislason, Gisli Mar (Wiley-Blackwell, 2016-09)
    Over the last two decades, there has been increasing public and political recognition of society's dependency upon natural habitat complexity and ecological processes to sustain provision of crucial ecosystem services, ranging from supplying potable ...
  • Frater, Paul (University of Iceland, School of Engineering and Natural Sciences, Faculty of Physical Sciences, 2020-06)
    Age and length (i.e. composition) data are, along with abundance indices, some of the most basic yet informative data collected in fisheries science. Measurements on age and length have been collected since the study of fish and fish stocks began in ...
  • Strøm, John Fredrik; Rikardsen, Audun Håvard; Campana, Steven; Righton, David; Carr, Jonathan; Aarestrup, Kim; Stokesbury, Michael J. W.; Gargan, Patrick; Javierre, Pablo Caballero; Thorstad, Eva Bonsak (Springer Science and Business Media LLC, 2019-05-27)
    Predation and mortality are often difcult to estimate in the ocean, which hampers the management and conservation of marine fshes. We used data from pop-up satellite archival tags to investigate the ocean predation and mortality of adult Atlantic ...
  • Jauhiainen, Jyrki; Alm, Jukka; Bjarnadóttir, Brynhildur; Callesen, Ingeborg; Christiansen, Jesper R.; Clarke, Nicholas; Dalsgaard, Lise; He, Hongxing; Jordan, Sabine; Kazanavičiūtė, Vaiva; Klemedtsson, Leif; Lauren, Ari; Lazdins, Andis; Lehtonen, Aleksi; Lohila, Annalea; Lupikis, Ainars; Mander, Ülo; Minkkinen, Kari; Kasimir, Åsa; Olsson, Mats; Ojanen, Paavo; Óskarsson, Hlynur; Sigurdsson, Bjarni D.; Søgaard, Gunnhild; Soosaar, Kaido; Vesterdal, Lars; Laiho, Raija (Copernicus GmbH, 2019-12-10)
    Drained organic forest soils in boreal and temperate climate zones are believed to be significant sources of the greenhouse gases (GHGs) carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O), but the annual fluxes are still highly uncertain. ...
  • Ilieva-Makulec, Krassimira; Bjarnadóttir, Brynhildur; Sigurdsson, Bjarni D. (Agricultural University of Iceland, 2015)
    Soil nematodes are a key group that can both influence and reflect changes in the soil ecosystem. We investigated the generic composition, abundance and community structure of soil nematodes in two contrasting vegetation successional seres now found ...
  • O'Gorman, Eoin J.; Ólafsson, Ólafur P.; Demars, Benoît O. L.; Friberg, Nikolai; Guðbergsson, Guðni; Hannesdóttir, Elísabet R.; Jackson, Michelle C.; Johansson, Liselotte S.; McLaughlin, Órla B.; Ólafsson, Jón S.; Woodward, Guy; Gislason, Gisli Mar (Wiley-Blackwell, 2016-03)
    Global warming is widely predicted to reduce the biomass production of top predators, or even result in species loss.Several exceptions to this expectation have been identified, however, and it is vital that we understand the underlyingmechanisms if we ...