Viser treff 281-300 av 1914

    • Macrozooplankton and micronekton diversity and associated carbon vertical patterns and fluxes under distinct productive conditions around the Kerguelen Islands 

      Cotté, C.; Ariza, A.; Berne, A.; Habasque, J.; Lebourges-Dhaussy, A.; Roudaut, G.; Espinasse, Boris Dristan; Hunt, B.P.V.; Pakhomov, E.A.; Henschke, N.; Péron, C.; Conchon, A.; Koedooder, C.; Izard, L.; Cherel, Y. (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-10-13)
      Mesopelagic communities are characterized by a large biomass of diverse macrozooplankton and micronekton (MM) performing diel vertical migration (DVM) connecting the surface to the deeper ocean and contributing to biogeochemical fluxes. In the Southern Ocean, a prominent High Nutrient Low Chlorophyll (HNLC) and low carbon export region, the contribution of MM to the vertical carbon flux of the ...
    • Global Patterns and Controls of Nutrient Immobilization on Decomposing Cellulose in Riverine Ecosystems 

      Costello, David M.; Tiegs, Scott D.; Boyero, Luz; Canhoto, Cristina; Capps, Krista A.; Danger, Michael; Frost, Paul C.; Gessner, Mark O.; Griffiths, Natalie A.; Halvorson, Halvor M.; Kuehn, Kevin A.; Marcarelli, Amy M.; Royer, Todd V.; Mathie, Devan M.; Albariño, Ricardo J.; Arango, Clay P.; Aroviita, Jukka; Baxter, Colden V.; Bellinger, Brent J.; Bruder, Andreas; Burdon, Francis J.; Callisto, Marcos; Camacho, Antonio; Colas, Fanny; Cornut, Julien; Crespo-Pérez, Verónica; Cross, Wyatt F.; Derry, Alison M.; Douglas, Michael M.; Elosegi, Arturo; de Eyto, Elvira; Ferreira, Verónica; Ferriol, Carmen; Fleituch, Tadeusz; Follstad Shah, Jennifer J.; Frainer, André; Garcia, Erica A.; García, Liliana; García, Pavel E.; Giling, Darren P.; Gonzales-Pomar, R. Karina; Graça, Manuel A. S.; Grossart, Hans-Peter; Guérold, François; Hepp, Luiz U.; Higgins, Scott N.; Hishi, Takuo; Iñiguez-Armijos, Carlos; Iwata, Tomoya; Kirkwood, Andrea E.; Koning, Aaron A.; Kosten, Sarian; Laudon, Hjalmar; Leavitt, Peter R.; Lemes da Silva, Aurea L.; Leroux, Shawn J.; LeRoy, Carri J.; Lisi, Peter J.; Masese, Frank O.; McIntyre, Peter B.; McKie, Brendan G.; Medeiros, Adriana O.; Miliša, Marko; Miyake, Yo; Mooney, Robert J.; Muotka, Timo; Nimptsch, Jorge; Paavola, Riku; Pardo, Isabel; Parnikoza, Ivan Y.; Patrick, Christopher J.; Peeters, Edwin T. H. M.; Pozo, Jesus; Reid, Brian; Richardson, John S.; Rincón, José; Risnoveanu, Geta; Robinson, Christopher T.; Santamans, Anna C.; Simiyu, Gelas M.; Skuja, Agnija; Smykla, Jerzy; Sponseller, Ryan A.; Teixeira-de Mello, Franco; Vilbaste, Sirje; Villanueva, Verónica D.; Webster, Jackson R.; Woelfl, Stefan; Xenopoulos, Marguerite A.; Yates, Adam G.; Yule, Catherine M.; Zhang, Yixin; Zwart, Jacob A. (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-02-18)
      Microbes play a critical role in plant litter decomposition and influence the fate of carbon in rivers and riparian zones. When decomposing low-nutrient plant litter, microbes acquire nitrogen (N) and phosphorus (P) from the environment (i.e., nutrient immobilization), and this process is potentially sensitive to nutrient loading and changing climate. Nonetheless, environmental controls on immobilization ...
    • The rapid spread of the girdled snail Hygromia cinctella in New Zealand (Gastropoda: Helicoidea) 

      Salvador, Rodrigo Brincalepe; Ravalo, Lorenzo G. O.; Tennyson, Alan J. D. (Journal article; Tidsskriftartikkel; Peer reviewed, 2022)
      The girdled snail Hygromia cinctella originates from southern Europe but has been introduced to countries in northern Europe and, more recently, to Aotearoa New Zealand. In the latter country, the girdled snail was first noted in 2015 in Wellington, but it has since spread to other regions of the North Island. We report here the rapid spread of this exotic species in New Zealand and record its ...
    • The release of common pheasants and grey partridges for pointing dog training- consequences for biodiversity, animal welfare and health -Scientific Opinion of the Panel on biodiversity of the Norwegian Scientific Committee for Food and Environment 

      Rueness, Eli Knispel; Asmyhr, Maria Gulbrandsen; Basic, Dean; Eldegard, Katrine; Janczak, Andrew Michael; Ytrehus, Bjørnar; Pedersen, Hans Christian; Berg, Paul Ragnar; Bryn, Anders; Geange, Sonya Rita; Hindar, Kjetil; Hole, Lars Robert; Kirkendall, Lawrence Richard; Nielsen, Anders; Nilsen, Erlend Birkeland; Sandercock, Brett; Thorstad, Eva Bonsak; Velle, Gaute (Research report; Forskningsrapport, 2022-11-30)
    • Impacts of climate change on the boreal forest ecosystem. Scientific Opinion of the Panel on Alien Organisms and Trade in Endangered species (CITES) of the Norwegian Scientific Committee for Food and Environment 

      Kausrud, Kyrre Linné; Vandvik, Vigdis; Flø, Daniel; Geange, Sonya Rita; Hegland, Stein Joar; Hermansen, Jo Skeie; Hole, Lars Robert; Ims, Rolf Anker; Kauserud, Håvard; Kirkendall, Lawrence Richard; Nordén, Jenni; Nybakken, Line; Ohlson, Mikael; Skarpaas, Olav; Wendell, Micael; de Boer, Hugo; Eldegard, Katrine; Hindar, Kjetil; Järnegren, Johanna; Måren, Inger Elisabeth; Nielsen, Anders; Nilsen, Erlend Birkeland; Rueness, Eli Knispel; Thorstad, Eva Bonsak; Velle, Gaute (Research report; Forskningsrapport, 2022-04-29)
    • Global maps of soil temperature 

      Lembrechts, Jonas J.; van den Hoogen, Johan; Aalto, Juha; Ashcroft, Michael B.; de Frenne, Pieter; Kemppinen, Julia; Kopecký, Martin; Luoto, Miska; Maclean, Ilya M. D.; Crowther, Thomas W.; Bailey, Joseph J.; Haesen, Stef; Klinges, David H.; Niittynen, Pekka; Scheffers, Brett R.; Van Meerbeek, Koenraad; Aartsma, Peter; Abdalaze, Otar; Abedi, Mehdi; Aerts, Rien; Ahmadian, Negar; Ahrends, Antje; Alatalo, Juha M.; Alexander, Jake M.; Allonsius, Camille Nina; Altman, Jan; Ammann, Christof; Andres, Christian; Andrews, Christopher; Ardö, Jonas; Arriga, Nicola; Arzac, Alberto; Aschero, Valeria; Leandro de Assis, Rafael; Barančok, Peter; Barrio, Isabel C; Barros, Agustina; Lenoir, Jonathan; Assmann, Jakob Johann; Bader, Maaike Y.; Bahalkeh, Khadijeh; Basham, Edmund W.; Bauters, Marijn; Bazzichetto, Manuele; Marchesini, Luca Belelli; Bell, Michael C.; Benavides, Juan C.; Alonso, José Luis Benito; Berauer, Bernd J.; Bjerke, Jarle W.; Björk, Robert G.; Björkman, Mats P.; Björnsdóttir, Katrin; Blonder, Benjamin; Boeckx, Pascal; Boike, Julia; Bokhorst, Stef; Brum, Bárbara N.S.; Brůna, Josef; Buchmann, Nina; Buysse, Pauline; Camargo, José Luís; Campoe, Otávio C.; Candan, Onur; Canessa, Rafaella; Cannone, Nicoletta; Carbognani, Michele; Carnicer, Jofre; Casanova-Katny, Angélica; Cesarz, Simone; Chojnicki, Bogdan; Choler, Philippe; Chown, Steven L.; Cifuentes, Edgar F.; Čiliak, Marek; Contador, Tamara; Convey, Peter; Cooper, Elisabeth (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-12-29)
      Research in global change ecology relies heavily on global climatic grids derived from estimates of air temperature in open areas at around 2 m above the ground. These climatic grids do not reflect conditions below vegetation canopies and near the ground surface, where critical ecosystem functions occur and most terrestrial species reside. Here, we provide global maps of soil temperature and bioclimatic ...
    • Polar bear harvest patterns across the circumpolar Arctic 

      Vongraven, Dag; Derocher, AE; Pilfold, Nicholas W; Yoccoz, Nigel (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-05-12)
      Wildlife harvest remains a conservation concern for many species and assessing patterns of harvest can provide insights on sustainability and inform management. Polar bears (Ursus maritimus) are harvested over a large part of their range by local people. The species has a history of unsustainable harvest that was largely rectified by an international agreement that required science-based management. ...
    • Spatial distribution of Dechlorane Plus and dechlorane related compounds in European background air 

      Skogeng, Lovise Pedersen; Halvorsen, Helene Lunder; Breivik, Knut; Eckhardt, Sabine; Herzke, Dorte; Moeckel, Claudia; Krogseth, Ingjerd Sunde (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-01-10)
      The highly chlorinated chemical Dechlorane Plus (DP) was introduced as a replacement flame retardant for Mirex, which is banned through the Stockholm Convention (SC) for its toxicity (T), environmental persistence (P), potential for bioaccumulation (B) and long-range environmental transport potential (LRETP). Currently, Dechlorane Plus is under consideration for listing under the Stockholm Convention ...
    • A combined microbial and biogeochemical dataset from high-latitude ecosystems with respect to methane cycle. 

      Barret, Maialen; Gandois, Laure; Thalasso, Frederic; Martinez Cruz, K; Jauregui, Alejandra; Lavergne, C.; Teisserenc, R.; Aguilar, A; Nieto, O.; Etchebehere, C.; Dellagnezze, B.M.; Winkler, P.B.; Fochesatto, Gilberto J.; Tananaev, N.; Svenning, Mette Marianne; Seppey, Victor William Christophe; Tveit, Alexander; Chamy, R.; España, M.S.A.; Mansilla, A.; Van De Putte, Anton; Sweetlove, M.; Murray, Alison E.; Cabrol, Lea (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-11-04)
      High latitudes are experiencing intense ecosystem changes with climate warming. The underlying methane (CH<sub>4</sub>) cycling dynamics remain unresolved, despite its crucial climatic feedback. Atmospheric CH<sub>4</sub> emissions are heterogeneous, resulting from local geochemical drivers, global climatic factors, and microbial production/consumption balance. Holistic studies are mandatory to ...
    • Draft genome sequence data of a psychrophilic tundra soil methanotroph, Methylobacter psychrophilus Z-0021 (DSM 9914). 

      Rissanen, Antti J.; Mangayil, Rahul; Svenning, Mette Marianne; Khanongnuch, Ramita (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-10-21)
      Psychrophilic methanotrophic bacteria are abundant and play an important role in methane removal in cold methanogenic environments, such as boreal and arctic terrestrial and aquatic ecosystems. They could be also applied in the bioconversion of biogas and natural gas into value-added products (e.g., chemicals and single-cell protein) in cold regions. Hence, isolation and genome sequencing of ...
    • Insights into sugar metabolism during bilberry (Vaccinium myrtillus L.) fruit development 

      Samkumar, Amos; Karppinen, Katja; Dhakal, Binita; Martinussen, Inger; Jaakola, Laura (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-03-03)
      Bilberry fruit is regarded as one of the best natural sources of anthocyanins and iswidely explored for its health-beneficial compounds. Besides anthocyanins, one of themajor attributes that determine the berry quality is the accumulation of sugars thatprovide sweetness and flavor to ripening fruit. In this study, we have identified 25 sugarmetabolism-related genes in bilberry, including invertases ...
    • Identifying seasonal distribution patterns of fin whales across the Scotia Sea and the Antarctic Peninsula region using a novel approach combining habitat suitability models and ensemble learning methods 

      Viquerat, Sacha; Waluda, Claire M.; Kennedy, Amy S.; Jackson, Jennifer A.; Hevia, Marta; Carroll, Emma L.; Buss, Danielle L.; Burkhardt, Elke; Thain, Scott; Smith, Patrick; Secchi, Eduardo R.; Santora, Jarrod A.; Reiss, Christian; Lindstrøm, Ulf Ove; Krafft, Bjørn Arne; Gittins, George; Dalla Rosa, Luciano; Biuw, Martin; Herr, Helena (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-12-16)
      Following their near extirpation by industrial whaling of the 20th century, the population status of Southern Hemisphere fin whales (SHFW) remains unknown. Systematic surveys estimating fin whale abundance in the Southern Ocean are not yet available. Records of fin whale sightings have been collected by a variety of organisations over the past few decades, incorporating both opportunistic data and ...
    • Elevated antioxidant defence in the brain of deep-diving pinnipeds 

      Martens, Gerrit A.; Folkow, Lars; Burmester, Thorsten; Geßner, Cornelia (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-12-16)
      While foraging, marine mammals undertake repetitive diving bouts. When the animal surfaces, reperfusion makes oxygen readily available for the electron transport chain, which leads to increased production of reactive oxygen species and risk of oxidative damage. In blood and several tissues, such as heart, lung, muscle and kidney, marine mammals generally exhibit an elevated antioxidant defence. ...
    • Environmental niche overlap in sibling planktonic species Calanus finmarchicus and C. glacialis in Arctic fjords 

      Weydmann-Zwolicka, Agata; Cottier, Finlo Robert; Berge, Jørgen; Majaneva, Sanna; Kuklinski, Piotr; Zwolicki, Adrian (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-12-08)
      Knowledge of environmental preferences of the key planktonic species, such as Calanus copepods in the Arctic, is crucial to understand ecosystem function and its future under climate change. Here, we assessed the environmental conditions influencing the development stages of Atlantic Calanus finmarchicus and Arctic Calanus glacialis, and we quantified the extent to which their niches overlap by ...
    • Inverse method applied to autonomous broadband hydroacoustic survey detects higher densities of zooplankton in near-surface aggregations than vessel-based net survey 

      Dunn, Muriel Barbara; Pedersen, Geir; Basedow, Sünnje Linnéa; Daase, Malin; Falk-Petersen, Stig; Bachelot, Loic; Camus, Lionel; Geoffroy, Maxime (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-11-10)
      Throughout all oceans, aggregations of zooplankton and ichthyoplankton appear as horizontal sound scattering layers (SSLs) when detected with active acoustic techniques. Quantifying the composition and density of these layers is prone to sampling biases. We conducted a net and trawl survey of the epipelagic fauna in northern Norway (70˚N) in June 2018 while an autonomous surface vehicle equipped ...
    • What is a fish? The life and legend of David L.G. Noakes 

      Bouvier, Lynn D.; Baylis, Jeffrey R.; Klemetsen, Anders; Kristjánsson, Bjarni K.; Li, Judith L.; Magnan, Pierre; McLaughlin, Robert L.; Muir, Andrew M.; Sakakura, Yoshitaka; Skúlason, Skúli (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-10-17)
      David Lloyd George Noakes (1942–2020) is best known for his insatiable curiosity, his quick wit and dry sense of humor, his scientific contributions to the field of animal behaviour, and his ability to form and maintain long-lasting connections. His research interests were vast but remained grounded in early life history, behaviour, social behaviour, the evolution of behaviour, behavioural genetics, ...
    • Changes in humpback whale song structure and complexity reveal a rapid evolution on a feeding ground in Northern Norway 

      Tyarks, Saskia C.; Aniceto, Ana Sofia; Ahonen, Heidi; Pedersen, Geir; Lindstrøm, Ulf Ove (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-12-09)
      Singing behaviour by male humpback whales (Megaptera novaeangliae) has traditionally been associated with low-latitude breeding grounds. However, in recent years, this vocal behaviour has been increasingly reported outside these areas. All singers in a given population sing the same version of a song and this song is continually evolving over time with modifications on different levels within the ...
    • FTIR autecological analysis of bottom-ice diatom taxa across a tidal strait in the Canadian Arctic 

      Pogorzelec, Nicole M.; Gough, Kathleen M.; Ha, Sun-Yong; Campbell, Karley; Else, Brent; Kim, Kwanwoo; Lee, Sang Heon; Mundy, C.J. (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-12-23)
      A recent study demonstrated that an Arctic tidal strait, where a shoaled and constricted waterway increases tidally driven sub-ice currents and turbulence, represents a “hotspot” for ice algal production due to a hypothesized enhanced ocean-ice nutrient supply. Based on these findings, we sampled the bottom-ice algal community across the same tidal strait between the Finlayson Islands within Dease ...
    • Pharmacokinetics of a long-acting subcutaneous eprinomectin injection in semi-domesticated reindeer (Rangifer tarandus tarandus) - a pilot study 

      Davidson, Rebecca K.; Fæste, Christiane Kruse; Uhlig, Silvio; Tukun, Feng-Ling; Lian, Hans Edvin; Solvang, Hans Arne; Thorvaldsen, Renate; Folkow, Lars; Sanchez Romano, Javier; Kilvær, Marianne V.; Holmgren, Karin Elisabeth; Nymo, Ingebjørg Helena (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-12-17)
      Reindeer (Rangifer tarandus tarandus) are exposed to the pathogenic parasitic nematode Elaphostrongylus rangiferi during grazing. The severity of disease is dose-dependent. Prophylactic anthelmintic treatment is needed to improve animal health and reindeer herding sustainability. Herds are traditionally only gathered once during the summer, requiring a drug with a persistent effect. In this study ...
    • Klimaendringer og virkninger på hovedøkosystem skog. 

      Kausrud, Kyrre; Vandvik, Vigdis; Flø, Daniel; Geange, Sonya Rita; Hegland, Stein Joar; Hermansen, Jo Skeie; Hole, Lars Robert; Ims, Rolf Anker; Kauserud, Håvard; Kirkendall, Lawrence R.; Nordén, Jenni; Nybakken, Line; Ohlson, Mikael; Skarpaas, Olav; Wendell, Micael; de Boer, Hugo; Eldegard, Katrine; Hindar, Kjetil; Järnegren, Johanna; Krokene, Paal; Måren, Inger Elisabeth; Nielsen, Anders; Nilsen, Erlend Birkeland; Rueness, Eli Knispel; Thorstad, Eva Bonsak; Velle, Gaute (Research report; Forskningsrapport, 2022-04-29)