Now showing items 1-20 of 879

    • Exploratory and confirmatory research in the open science era 

      Nilsen, Erlend Birkeland; Bowler, Diana Elizabeth; Linnell, John Durrus (Peer reviewed, 2002)
      1. Applied ecological research is increasingly inspired by the open science movement. However, new challenges about how we define our science when biodiversity data are being shared and reused are not solved. Among these ...
    • Generic genetic differences between farmed and wild Atlantic Salmon identified from a 7K SNP-chip 

      Karlsson, Sten; Moen, Thomas; Lien, Sigbjørn; Glover, Kevin A.; Hindar, Kjetil (Peer reviewed, 2011)
      Genetic interactions between farmed and wild conspecifics are of special concern in fisheries where large numbers of domesticated individuals are released into the wild. In the Atlantic salmon (Salmo salar), selective ...
    • More stable productivity of semi natural grasslands than sown pastures in a seasonally dry climate 

      Ospina, Sonia; Rusch, Graciela; Pezo, Danilo; Casanoves, Fernando; Sinclair, Fergus L. (Journal article; Peer reviewed, 2012)
      In the Neotropics the predominant pathway to intensify productivity is generally thought to be to convert grasslands to sown pastures, mostly in monoculture. This article examines how above-ground net primary productivity ...
    • Deep sympatric mitochondrial divergence without reproductive isolation in the common redstart Phoenicurus phoenicurus 

      Hogner, Silje; Laskemoen, Terje; Lifjeld, Jan Terje; Porkert, Jiri; Kleven, Oddmund; Albayrak, Tamer; Kabasakal, Bekir; Johnsen, Arild (Journal article; Peer reviewed, 2012)
      Mitochondrial DNA usually shows low sequence variation within and high sequence divergence among species, which makes it a useful marker for phylogenetic inference and DNA barcoding. A previous study on the common redstart ...
    • Contemporary ocean warming and freshwater conditions are related to later sea age at maturity in Atlantic salmon spawning in Norwegian rivers 

      Villar, Jaime Otero; Jensen, Arne Johan; Stenseth, Nils Christian; Storvik, Geir Olve; Vøllestad, Leif Asbjørn; L'Abée Lund, Henning (Journal article; Peer reviewed, 2012)
      Atlantic salmon populations are reported to be declining throughout its range, raising major management concerns. Variation in adult fish abundance may be due to variation in survival, growth, and timing of life history ...
    • Vole and lemming activity observed from space 

      Olofsson, Johan; Tømmervik, Hans; Callaghan, T.V. (Journal article; Peer reviewed, 2012)
      Predicting the impacts of present global warming requires an understanding of the factors controlling plant biomass and production. The extent to which they are controlled by bottom-up drivers such as climate, nutrient and ...
    • Ecosystem response to climatic change: the importance of the cold season 

      Bokhorst, Stef; Bjerke, Jarle Werner; Tømmervik, Hans; Preece, Catherine; Phoenix, Gareth K. (Journal article; Peer reviewed, 2012)
      Winter climate and snow cover are the important drivers of plant community development in polar regions. However, the impacts of changing winter climate and associated changes in snow regime have received much less attention ...
    • Holder fisketrappene mål i forhold til Vannforskriften? 

      Kraabøl, Morten; Museth, Jon; Skurdal, Jostein; Johnsen, Stein Ivar (Journal article; Peer reviewed, 2012)
    • ¿Cómo incrementar la multifuncionalidad en potreros? 

      Sánchez, Dalia; Rusch, Graciela; Villanueva, Cristóbal; Barton, David Nicholas; Salazar, Álvaro (Journal article; Peer reviewed, 2013)
      En las zonas ganaderas de Nicaragua hay un interés creciente de los productores por retener y manejar árboles en potreros (árboles dispersos y cercas vivas). Es recomendable que el productor considere la importancia de la ...
    • Influencia de los árboles en la vegetación herbácea de sistemas ganaderos del trópico seco de Nicaragua 

      Zapata, Piedad; Rusch, Graciela; Ibrahim, Muhammad; DeClerk, Fabrice; Casanoves, Fernando; Beer, John (Journal article; Peer reviewed, 2013)
      Se estudiaron las características estructurales de tres especies forestales y su efecto sobre la productividad primaria neta aérea y la composición florística de pastizales naturales en el trópico seco de Nicaragua. Las ...
    • Composición florística de pastizales en Muy Muy y Rivas, Nicaragua 

      Morales, Julio; Rusch, Graciela; Casanoves, Fernando; Söderström, Lars; Rocha, Lester (Journal article; Peer reviewed, 2013)
      A pesar de ser ecosistemas manejados, surgidos de la transformación de ambientes naturales, los pastizales compuestos por especies nativas y exóticas pueden tener un papel importante en la conservación de la biodiversidad ...
    • Overvåking av fiskesamfunn i store vassdrag etter vannforskriften 

      Museth, Jon; Johnsen, Stein Ivar; Kraabøl, Morten; Dokk, John Gunnar; Skurdal, Jostein (Journal article; Peer reviewed, 2013)
      Vannforskriften skal sikre en mer helhetlig og økosystembasert vannforvaltning i Norge, og om nødvendig iverksette forebyggende eller forbedrende miljøtiltak for å sikre miljøtilstanden i ferskvann, grunnvann og kystvann. ...
    • A road in the middle of one of the last wild reindeer migration routes in Norway: crossing behaviour and threats to conservation 

      Panzacchi, Manuela; Van Moorter, Bram F. A.; Strand, Olav (Peer reviewed; Journal article, 2013)
      The development of roads and associated infrastructure has interrupted several traditional migrations of wild reindeer (Rangifer tarandus tarandus) in Norway. The population in the Setesdal Austhei wild reindeer area still ...
    • Estrategias de los árboles para el uso eficiente del agua y tolerancia a la sequía en sistemas silvopastoriles 

      Bucheli, Pilar; Benjamin, Tamara; Rusch, Graciela; Ibrahim, Muhammad; Casals, Pere; Sánchez, Dalia; Pugnaire, Francisco (Journal article; Peer reviewed, 2013)
      La adquisición de recursos del suelo por las plantas depende de la especie, las características del suelo y de otros factores del medio ambiente local. El fin de este estudio fue conocer la distribución y los tipos de ...
    • Temperature and vegetation seasonality diminishment over northern lands 

      Xu, L.; Myneni, R.B.; Chapin III, F.S.; Callaghan, T.V.; Pinzon, J.E.; Tucker, Compton J.; Zhu, Z.; Bi, J.; Ciais, P.; Tømmervik, Hans; Euskirchen, E.S.; Forbes, B. C.; Piao, S.L.; Anderson, B.T.; Ganguly, S.; Nemani, R.R.; Goetz, S.J.; Beck, P.S.A.; Bunn, A.G.; Cao, C.; Stroeve, J.C. (Journal article; Peer reviewed, 2013)
      Global temperature is increasing, especially over Northern lands (>50 N), owing to positive feedbacks. As this increase is most pronounced in winter, temperature seasonality (ST)—conventionally defined as the difference ...
    • Trans-Equatorial Migration Routes, Staging Sites and Wintering Areas of a High-Arctic Avian Predator: The Long-tailed Skua (Stercorarius longicaudus) 

      Gilg, Olivier; Moe, Børge; Hanssen, Sveinn Are; Schmidt, Niels Martin; Sittler, Benoit; Hansen, Jannik; Reneerkens, Jeroen; Sabard, Brigitte; Chastel, Olivier; Moreau, Jérôme; Phillips, Richard A.; Oudman, Thomas; Biersma, Elisabeth M.; Fenstad, Anette; Lang, Johannes; Bollache, Loïc (Peer reviewed, 2013)
      The Long-tailed Skua, a small (,300 g) Arctic-breeding predator and seabird, is a functionally very important component of the Arctic vertebrate communities in summer, but little is known about its migration and winter ...
    • Learning from the past to predict the future: using archaeological findings and GPS data to quantify reindeer sensitivity to anthropogenic disturbance in Norway 

      Panzacchi, Manuela; Van Moorter, Bram F. A.; Jordhøy, Per; Strand, Olav (Journal article; Peer reviewed, 2013)
    • Ecosystem change and stability over multiple decades in the Swedish subarctic: complex processes and multiple drivers 

      Callaghan, Terry V.; Jonasson, Christer; Thierfelder, Tomas; Yang, Zhenlin; Hedenås, Henrik; Johansson, Margareta; Molau, Ulf; Van Bogaert, Rik; Michelsen, Anders; Olofsson, Johan; Gwynn-Jones, Dylan; Bokhorst, Stef; Phoenix, Gareth K.; Bjerke, Jarle Werner; Tømmervik, Hans; Christensen, Torben R.; Hanna, Edward; Koller, Eva K.; Sloan, Victoria L. (Journal article; Peer reviewed, 2013)
      The subarctic environment of northernmost Sweden has changed over the past century, particularly elements of climate and cryosphere. This paper presents a unique geo-referenced record of environmental and ecosystem ...
    • Trends in the start of the growing season in Fennoscandia 1982–2011 

      Høgda, Kjell Arild; Tømmervik, Hans; Karlsen, Stein Rune (Journal article; Peer reviewed, 2013)
      Global temperature is increasing, and this is affecting the vegetation phenology in many parts of the world. In Fennoscandia, as well as Northern Europe, the advances of phenological events in spring have been recorded in ...
    • Assessing the effects of climate on host-parasite interactions: a comparative study of European birds and their parasites 

      Møller, Anders Pape; Merino, Santiago; Soler, Juan José; Antonov, Anton; Badás, Elisa P.; Calero-Torralbo, Miguel A.; de Lope, Florentino; Eeva, Tapio; Figuerola, Jordi; Flensted-Jensen, Einar; Garamszegi, László Zsolt; González-Braojos, Sonia; Gwinner, Helga; Hanssen, Sveinn Are; Heylen, Dieter; Ilmone, Petteri; Klarborg, Kurt; Korpimäki, Erkki; Martínez, Javier; Martínez-de la Puente, Josue; Marzal, Alfonso; Matthysen, Erik; Matyjasiak, Piotr; Molina-Morales, Mercedes; Moreno, Juan; Mousseau, Timothy A.; Nielsen, Jan Tøttrup; Pap, Peter László; Rivero-de Aguilar, Juan; Shurulinkov, Peter; Slagsvold, Tore; Szép, Tibor; Szöllösi, Eszter; Török, Janos; Vaclav, Radovan; Valera, Fransisco; Ziane, Nadia (Journal article; Peer reviewed, 2013)
      Background: Climate change potentially has important effects on distribution, abundance, transmission and virulence of parasites in wild populations of animals. Methodology/Principal Finding: Here we analyzed paired ...