Viser treff 263-282 av 377

    • Prey density in non-breeding areas affects adult survival of black-legged kittiwakes Rissa tridactyla 

      Reiertsen, Tone K.; Erikstad, Kjell E.; Anker-Nilssen, Tycho; Barrett, Robert T.; Boulinier, Thierry; Frederiksen, Morten; González-Solís, Jacob; Grémillet, David; Johns, David; Moe, Børge; Ponchon, Aurore; Skern-Mauritzen, Mette; Sandvik, Hanno; Yoccoz, Nigel Gilles (Journal article; Tidsskriftartikkel; Peer reviewed, 2014-08-27)
      In migratory birds, environmental conditions in both breeding and non-breeding areas may affect adult survival rates and hence be significant drivers of demographic processes. In seabirds, poor knowledge of their true distribution outside the breeding season, however, has severely limited such studies. This study explored how annual adult survival rates of black-legged kittiwakes Rissa tridactyla ...
    • The process of recording the Sámi place names at Stuorgieddi in the region of southern Troms, Northern Norway 

      Storm, Dikka (Chapter; Bokkapittel, 2023)
      Studies from a Sámi settlement on the island of Iinnasuolu in the region of Southern Troms, Northern Norway, where a large number of traces in the outlying fields from earlier settlements are localised, were the point of departure for several studies on the past and present of the composite history of this settlement. A study of how the local Sámi place names were established locally, and on the ...
    • Prospects and challenges of environmental DNA (eDNA) monitoring in freshwater ponds 

      Harper, Lynsey R.; Buxton, Andrew S.; Rees, Helen C.; Bruce, Kat; Brys, Rein; Halfmaerten, David; Read, Daniel S.; Watson, Hayley V.; Sayer, Carl D.; Jones, Elanor P.; Priestley, Victoria; Mächler, Elvira; Múrria, Cesc; Garcès-Pastor, Sandra; Medupin, Cecilia; Burgess, Katherine; Benson, Gillian; Boonham, Neil; Griffiths, Richard A.; Handley, Lori Lawson; Hänfling, Bernd (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-09-03)
      Environmental DNA (eDNA) analysis is a rapid, non-invasive, cost-efficient biodiversity monitoring tool with enormous potential to inform aquatic conservation and management. Development is ongoing, with strong commercial interest, and new uses are continually being discovered. General applications of eDNA and guidelines for best practice in freshwater systems have been established, but ...
    • Prøvestikk i innmark på Flakstad Prestegård sommeren 2012 

      Arntzen, Johan Eilertsen (Research report; Forskningsrapport, 2013)
      Som et ledd i undertegnedes PhD-prosjekt “The consolidation of farming in northern Norway” ble det den 26.07.2012 gjort befaringer og mindre prøvegravninger på Flakstad Prestegård i Flakstad kommune. Stedet ligger helt nord på Flakstadøya på en sandstrandflate mellom fjellet og havet og rett nord for Flakstad kirke fra 1700-tallet. Jordsmonnet består av fin flygesand og preges der hvor det ikke ...
    • Psoroma femsjonense (Fr.) Trevis., a misunderstood species possibly extinct from Europe 

      Elvebakk, Arve (Journal article; Tidsskriftartikkel; Peer reviewed, 2022)
      Psoroma femsjonense, long considered to be a synonym of P. hypnorum, is shown here to represent a distinct, misunderstood species. The collections seen are from the lowlands of southern Sweden, Denmark, Germany, the Czech Republic, and France. In these areas, the species has not been collected since 1945 and may prove to be regionally extinct from these countries. However, a report indicates that ...
    • Psoroma inflatum, a new alpine lichen from New Zealand 

      Elvebakk, Arve (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-07)
      <i>Psoroma inflatum</i> sp. nov. is described from mountains in Canterbury and Otago in New Zealand’s South Island. It is related to <i>P. hypnorum</i>, but differs in having a strongly inflated and glossy thallus. The squamules are prostrate, ascending or erect, and form brown, coarsely coralloid patches. They lack a dorsiventral morphology and anatomy, in contrast to other Psoroma species, except ...
    • Psoroma nigropunctatum sp. nov., an alpine lichen in south-eastern Australia related to P. buchananii 

      Elvebakk, Arve; Elix, J.A. (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-07)
      <i>Psoroma nigropunctatum</i> is described as new to science, based on collections from alpine and subalpine areas of the Australian Capital Territory, Victoria and New South Wales. It grows on soil or mosses on rock outcrops and in tussock grasslands. It had previously been misidentified as <i>Psoroma hypnorum</i>, but it is more closely related to <i>P. buchananii</i>. The two species have large ...
    • Psoroma spinuliferum (Pannariaceae), a new corticolous lichen species from Alaska with two different types of cephalodia 

      Elvebakk, Arve; Tønsberg, Tor (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-04-30)
      The species <i>Psoroma spinuliferum</i> is described here as new to science. It is only known from the holotype on a <i>Picea sitchensis</i> trunk near a sea-shore in southern, coastal Alaska. The species is distinct in having short, brittle, spinule-like hairs on both apothecium margins, thalline squamules and on pulvinate to coarsely coralloid cephalodia with emerald-colored <i>Nostoc</i> photobionts. ...
    • Range shifts and global warming: ecological responses of Empetrum nigrum L. to experimental warming at its northern (high Arctic) and southern (Atlantic) geographical range margin 

      Buizer, B; Weijers, S; van Bodegom, PM; Alsos, Inger Greve; Eidesen, Pernille Bronken; van Breda, J; de Korte, M; van Rijckevorsel, J; Rozema, J (Journal article; Tidsskriftartikkel; Peer reviewed, 2012)
      Global change is expected to lead to range shifts of plant species. The ecological mechanisms underpinning these shifts are currently not well understood. Here, we compared ecological responses possibly underlying southern range contraction and northern range expansion of Empetrum nigrum, a key species in northern heathlands, which may be related to global change. We hypothesized a negative ...
    • Rapid laminated clastic alluviation associated with increased Little Ice Age flooding co-driven by climate variability and historic land-use in the middle Severn catchment, UK 

      Pears, Ben; Brown, Antony Gavin; Toms, Phillip S; Wood, Jamie; Pennington, Benjamin T; Jones, Richard (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-10-06)
      The analysis of exceptionally well-preserved visible clastic laminations in deep alluvial sediments at Kempsey, Worcestershire (UK), allows a new highresolution analysis of late-Holocene flood-history in the largest UK catchment, as well as local human response. At the sample site over 4.5m of sandy-silt overbank-alluvium accumulated on the floodplain and optically stimulated luminescence (OSL) ...
    • "Rara avis in Ultima Thule": In diem natalem septuagesimum Profestricis Sunnivae des Bouvrie 

      Aspaas, Per Pippin (Journal article; Tidsskriftartikkel, 2015)
    • Rare earth elements and neodymium and strontium isotopic constraints on provenance switch and post-depositional alteration of fossiliferous Ediacaran and lowermost Cambrian strata from Arctic Norway. 

      Meinhold, Guido; Willbold, Matthias; Karius, Volker; Jensen, Sören; Agić, Heda; Ebbestad, Jan Ove R.; Palacios, Teodoro; Högström, Anette; Høyberget, Magne; Taylor, Wendy L. (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-09-16)
      The Digermulen Peninsula in northeastern Finnmark, Arctic Norway, comprises one of the most complete Ediacaran–Cambrian transitions worldwide with a nearly continuous record of micro- and macrofossils from the interval of the diversification of complex life. Here, we report on the provenance and post-depositional alteration of argillaceous mudstones from the Digermulen Peninsula using rare earth ...
    • A Rarely Seen Taxonomic Revision with Immense Value for 41 Years and Counting: Reflections on the 1981 Monograph of Trichonta Winnertz, 1864 (Diptera: Mycetophilidae) by Raymond Gagné, with an Integrative Revision of the Trichonta Vulcani (Dziedzicki, 1889) Species Complex. 

      Kjærandsen, Jostein; Jakovlev, Jevgeni; Polevoi, Alexei; Salmela, Jukka; Kurina, Olavi (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-12-08)
      We celebrate Raymond J. Gagné for his contributions to taxonomy of the Mycetophilidae (Diptera), specifically for his forty-one-years-old monograph of Holarctic Trichonta Winnertz, 1864 that is still the primary source used for species identification in the genus. We briefly reflect on his monograph´s impact and demonstrate by use of recent DNA barcode data extracted from BOLD Systems (BOLD) ...
    • Recent decline in body condition of departing Common Guillemots Uria aalge at Hornøya, North Norway 

      Barrett, Robert T. (Journal article; Tidsskriftartikkel; Peer reviewed, 2010)
      Since 1980, there has been large variation and a recent decline in the mass and body condition of Common Guillemot Uria aalge chicks departing from the nest site in NE Norway. This may be related to deterioration in the feeding conditions off the colony and is alarming considering the critically endangered status of the species in Norway. To measure body condition, earlier studies have caught, weighed ...
    • Reconstructing the invasion history of Heracleum persicum (Apiaceae) into Europe 

      Rijal, Dilli Prasad; Alm, Torbjørn; Jahodová, Šárka; Stenøien, Hans K.; Alsos, Inger Greve (Journal article; Tidsskriftartikkel, 2015-11-06)
      Sparse, incomplete and inappropriate historical records of invasive species often hamper invasive species management interventions. Population genetic analyses of invaders might provide a suitable context for the identification of their source populations and possible introduction routes. Here, we describe the population genetics of Heracleum persicum Desf. ex Fisch and trace its route of introduction ...
    • Reconstruction as trope of cultural display. Rethinking the role of “living exhibitions” 

      Baglo, Cathrine (Journal article; Tidsskriftartikkel; Peer reviewed, 2015)
      During the nineteenth and early twentieth century, a new and particularly widespread type of exhibition practice occurred all over the Western World, namely “living exhibitions”. They were characterized by the display of indigenous and exotic-looking peoples in zoological gardens, circuses, amusement parks, various industrial expositions, and major international expositions where representatives ...
    • Reindrift, hushold og kjønn: Sør-Troms på 1700-tallet, i historisk kildemateriale. 

      Storm, Dikka (Journal article; Tidsskriftartikkel; Peer reviewed, 2015)
      Focusing on women’s and men’s participation, this article sheds light on the reindeer herding on the island of Hinnøya and in the southern areas of the county of Troms, Northern Norway, during the 18th and 19th centuries. In this region the Sámi and the Norwegian populations have been living side by side for a long period. In addition to hunting and gathering, the economy of the Sámi population was ...
    • Resident bird species track inter-annual variation in spring phenology better than long-distance migrants in a subalpine habitat 

      Søraker, Jørgen Skavdal; Stokke, Bård Gunnar; Kleven, Oddmund; Moksnes, Arne; Rudolfsen, Geir; Skjærvø, Gine Roll; Vaagland, Henriette; Røskaft, Eivin; Ranke, Peter Sjolte (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-01-11)
      The ability to track variation in climate is important for species to persist in a given environment. Lack of responses to both long-term changes and inter-annual variation in climate parameters can result in reduced fitness and population decline. Furthermore, migration strategy can influence the ability to track climatic variation due to the potential to use reliable environmental cues. Here, ...
    • Resilient communities? Collapse and recovery of a social-ecological system in Arctic Norway 

      Broderstad, Else Grete; Eythórsson, Einar (Journal article; Tidsskriftartikkel; Peer reviewed, 2014)
      Fisheries-dependent Sami communities in the Norwegian Arctic face major challenges adapting and responding to socialecological changes. On a local scale, communities and households continually adapt and respond to interacting changes in natural conditions and governance frameworks. Degradation of the marine environment and decline in coastal settlements can move socialecological systems beyond ...
    • Rethinking Sami Agency during Living Exhibitions: From the Age of Empire to the Postwar World 

      Baglo, Cathrine (Chapter; Bokkapittel, 2014)
      In the fall of 2008, the state-owned Norwegian Broadcasting Company (NRK), a noncommercial and highly-regarded channel, presented its new Saturday night show: „The Great Travel‟. The plot was simple. Three Norwegian families were sent into the „bush‟ to live for three weeks with three different indigenous groups around the World. One of the groups, the Waorani in the Ecuadorian Amazon, appeared more ...