Now showing items 562-581 of 679

    • Sphagnum incundum a new species in Sphagnum subg. Acutifolia (Sphagnaceae) from boreal and arctic regions of North America 

      Kyrkjeeide, Magni Olsen; Hassel, Kristian; Shaw, Blanca; Shaw, Jonathan; Temsch, Eva M.; Flatberg, Kjell Ivar (Journal article; Peer reviewed, 2018)
      We describe Sphagnum incundum in Sphagnum subg. Acutifolia (Sphagnaceae, Bryophyta). We used both molecular and morphological methods to describe the new species. Molecular relationships with closely related species were ...
    • Spring phenology shapes the spatial foraging behavior of Antarctic petrels 

      Fauchald, Per; Tarroux, Arnaud; Tveraa, Torkild; Cherel, Yves; Ropert-Coudert, Yan; Kato, Akiko; Love, Oliver P.; Varpe, Øystein; Descamps, Sébastien (Journal article; Peer reviewed, 2017)
      In polar seas, the seasonal melting of ice triggers the development of an open-water ecosystem characterized by short-lived algal blooms, the grazing and development of zooplankton, and the influx of avian and mammalian ...
    • Stable isotope marking of otoliths duringvaccination: a novel method for mass-marking fish 

      Warren-Myers, Fletcher; Dempster, Tim; Fjelldal, Per Gunnar; Hansen, Tom; Jensen, Arne Johan; Swearer, Stephen E. (Peer reviewed, 2014)
      Tagging or marking of fishes enables the collection of population-based information for ecological research, yet few techniques enable 100% mark detection success. We tested a new mass-marking technique: otolith marking ...
    • Stable isotopes and gut contents indicate differential resource use by coexisting asp (Leuciscus aspius) and pikeperch (Sander lucioperca) 

      Vašek, Mojmír; Eloranta, Antti; Vejříková, Ivana; Blabolil, Petr; Říha, Milan; Jůza, Tomáš; Šmejkal, Marek; Matěna, Josef; Kubečka, Jan; Peterka, Jiří (Journal article; Peer reviewed, 2018)
      Differential use of habitat and prey resources is an important mechanism that may allow coexistence of sympatric species. Unlike interactions between smaller cyprinid and percid fishes, the resource use by coexisting ...
    • Stable isotopes reveal diet shift from pre-extinction to reintroduced Przewalski's horses 

      Kaczensky, Petra; Šturm, Martina Burnik; Sablin, Mikhail V.; Voigt, Christian C.; Smith, Steve; Ganbaatar, Oyunsaikhan; Balint, Boglarka; Walzer, Chris; Spasskaya, Natalia N. (Journal article; Peer reviewed, 2017)
      The Przewalski’s horse (Equus ferus przewalskii), the only remaining wild horse within the equid family, is one of only a handful of species worldwide that went extinct in the wild, was saved by captive breeding, and has ...
    • Stakeholders’ perspectives on the operationalisation of the ecosystem service concept: results from 27 case studies 

      Dick, Jan; Turkelboom, Francis; Woods, Helen; Iniesta-Arandia, Irene; Primmer, Eeva; Saarela, Sanna-Riikka; Bezak, Peter; Mederly, Peter; Leone, Michael; Verheyden, Wim; Kelemen, Eszter; Hauck, Jennifer; Andrews, Chris; Antunes, Paula; Aszalós, Réka; Baró, Francesc; Barton, David Nicholas; Berry, Pam; Bugter, Rob; Carvalho, Laurence; Czúcz, Balint; Dunford, Rob; Blancos, Gemma Garcia; Geamănăt, Nicoleta; Giucăt, Relu; Grizzetti, Bruna; Izakovičováv, Zita; Kertész, Miklós l; Kopperoinen, Leena; Langemeyer, Johannes; Lapola, David Montenegro; Liquete, Camino; Luque, Sandra; Pastur, Guillermo Martinéz; Martín-López, Berta; Mukhopadhyay, Raktima; Niemela, Jari; Odee, David; Peri, Pablo Luis; Pinho, Patricia; Blumentrath, Stefan; Fongar, Claudia; Gomez-Baggethun, Erik; Gundersen, Vegard; Haavardsholm, Oscar; Köhler, Berit; Lindhjem, Henrik; Nowell, Megan Sara; Often, Anders; Reinvang, Rasmus; Rusch, Graciela; Stange, Erik (Journal article; Peer reviewed, 2017)
      The ecosystem service (ES) concept is becoming mainstream in policy and planning, but operational influence on practice is seldom reported. Here, we report the practitioners’ perspectives on the practical implementation ...
    • Stand structure, recruitment and growth dynamics in mixed subalpine spruce and Swiss stone pine forests in the Eastern Carpathians 

      Popa, Ionel; Nechita, Constantin; Hofgaard, Annika (Journal article; Peer reviewed, 2017)
      Natural subalpine forests are considered to be sensitive to climate change, and forest characteristics are assumed to reflect the prevalent disturbance regime. We hypothesize that stand history determines different stand ...
    • State and transition model approach in native forests of Southern Patagonia (Argentina): linking ecosystem services, thresholds and resilience 

      Peri, Pablo Luis; López, Dardo Rubén; Rusch, Veronica; Rusch, Graciela; Rosas, Yamina Micaela; Pastur, Guillermo Martinéz (Journal article; Peer reviewed, 2017)
      The sustainable use of ñire forests requires knowledge of its dynamics and management to maintain long-term main forest ecosystem services. The aim of this work was to develop a structural–functional state and transition ...
    • Statistical and ecological challenges of monitoring parasitic salmon lice infestations in wild salmonid fish stocks 

      Helland, Ingeborg Palm; Uglem, Ingebrigt; Jansen, Peder A; Diserud, Ola Håvard; Bjørn, Pål Arne; Finstad, Bengt (Peer reviewed, 2015)
      Ecological monitoring programmes should provide precise data to inform management, but the data quality is often limited by methodological challenges and the need for cost-effective sampling. Parasite infestations are ...
    • Status and trends in Arctic vegetation: Evidence from experimental warming and long-term monitoring 

      Bjorkman, Anne D.; Criado, Mariana Garcia; Myers-Smith, Isla H.; Ravolainen, Virve; Jónsdóttir, Ingibjörg Svala; Westergaard, Kristine Bakke; Lawler, James P.; Aronsson, Mora; Bennett, Bruce; Gardfjell, Hans; Heiðmarsson, Starri; Stewart, Laerke; Normand, Signe (Journal article; Peer reviewed, 2019)
      Changes in Arctic vegetation can have important implications for trophic interactions and ecosystem functioning leading to climate feedbacks. Plot-based vegetation surveys provide detailed insight into vegetation changes ...
    • Strandenger i Østfold – areal, økologisk tilstand og rødlistearter 

      Evju, Marianne; Stabbetorp, Odd Egil; Bratli, Harald (Journal article; Peer reviewed, 2014)
      Salt meadows in Østfold – area, ecological condition and red listed species
    • Strategic conservation for lesser prairie-chickens among landscapes of varying anthropogenic influence 

      Sullins, Daniel S.; Haukos, David A.; Lautenbach, Joseph M.; Lautenbach, Jonathan D.; Robinson, Samantha G.; Rice, Mindy B.; Sandercock, Brett; Kraft, John D.; Plumb, Reid T.; Reitz, Jonathan H.; Hutchinson, J.M. Shawn; Hagen, Christian A. (Journal article, 2019)
      For millennia grasslands have provided a myriad of ecosystem services and have been coupled with human resource use. The loss of 46% of grasslands worldwide necessitates the need for conservation that is spatially, temporally, ...
    • Stress-induced secondary leaves of a boreal deciduous shrub (Vaccinium myrtillus) overwinter then regain activity the following growing season 

      Bjerke, Jarle W.; Wierzbinski, Grzegorz; Tømmervik, Hans; Phoenix, Gareth K.; Bokhorst, Stef (Journal article; Peer reviewed, 2018)
      The ericoid shrub Vaccinium myrtillus is one of several deciduous boreal plants that respond to larval defoliation by compensatory production of a new set of leaves within the same growing season soon after defoliation. ...
    • Stylonectria norvegica (Nectriaceae), a new species fromNorway 

      Lechat, Christian; Fournier, Jacques; Nordén, Björn (Peer reviewed, 2015)
      Stylonectria norvegica sp. nov. is described from three collections on pyrenomycetous hosts on Quercus, Betula and Alnus in Norway. The fusarium-like asexual state was obtained in culture and the ITS1- 5.8S-ITS2 loci ...
    • Supplementary stocking selects for domesticated genotypes 

      Hagen, Ingerid Julie; Jensen, Arne Johan; Bolstad, Geir Hysing; Diserud, Ola Håvard; Hindar, Kjetil; Lo, Håvard; Karlsson, Sten (Journal article; Peer reviewed, 2019)
      Stocking of hatchery produced fish is common practise to mitigate declines in natural populations and may have unwanted genetic consequences. Here we describe a novel phenomenon arising where broodstock used for stocking ...
    • Supportive breeders of Atlantic salmon Salmo salar have reduced fitness in nature 

      Jonsson, Bror; Jonsson, Nina; Jonsson, Marius (Peer reviewed, 2019)
      Wild Atlantic salmon (Salmo salar) are in decline over the entire distribution area, and populations are enhanced by supportive breeding. Parental fish are sampled in rivers, crossed and the offspring reared in hatcheries ...
    • Survival and Migration of Rock Ptarmigan in Central Scandinavia 

      Nilsen, Erlend Birkeland; Moa, Pål Fossland; Brøseth, Henrik; Pedersen, Hans Christian; Hagen, Bjørn-Roar (Peer reviewed, 2020)
      In a world undergoing massive declines in the distribution and abundance of many wildlife species, documenting basic ecological characteristics is often needed to be able to understand and potentially mitigate current and ...
    • Survival estimates strongly depend on capture–recapture designs in a disturbed environment inducing dispersal 

      Ponchon, Aurore; Choquet, Rémi; Tornos, Jéremy; McCoy, Karen D.; Tveraa, Torkild; Boulinier, Thierry (Journal article; Peer reviewed, 2018)
      Capture-Recapture (CR) approaches are extensively used to estimate demographic parameters. Their robustness relies on the selection of suitable statistical models, but also on the sampling design and effort deployed in the ...
    • Survival rate and breeding outputs in a high Arctic seabird exposed to legacy persistent organic pollutants and mercury 

      Goutte, Aurélie; Barbraud, Christophe; Herzke, Dorte; Bustamante, Paco; Angelier, Frédéric; Tartu, Sabrina; Clement-Chastel, Celine; Moe, Børge; Bech, Claus; Gabrielsen, Geir W.; Bustnes, Jan Ove; Chastel, Olivier (Journal article; Peer reviewed, 2015)
      Chronic exposure to pollutants may represent a threat for wildlife.We tested whether adult survival rate, breeding probability and breeding success the year of sampling and the following year were affected by blood levels ...
    • Swimming performance of brown trout and grayling show species- specific responses to changes in temperature 

      Taugbøl, Annette; Olstad, Kjetil; Bærum, Kim Magnus; Museth, Jon (Journal article; Peer reviewed, 2018)
      Fishways have historically been constructed to restore and preserve the ecological connectivity for fish in fragmented rivers. However, the fishways are often selective on species due to different size and swimming capacity. ...