Blar i NTNU Open på forfatter "Speed, James David Mervyn"
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The burning question: does fire affect habitat selection and forage preference of the black rhinoceros Diceros bicornis in East African savannahs?
Anderson, T.M.; Ngoti, P. M.; Nzunda, M.L.; Griffith, D. M.; Speed, James David Mervyn; Fossøy, Frode; Røskaft, Eivin; Graae, Bente Jessen (Journal article; Peer reviewed, 2018)The conservation of threatened species requires information on how management activities influence habitat quality. The Critically Endangered black rhinoceros Diceros bicornis is restricted to savannahs representing c. 5% ... -
The handbook for standardized field and laboratory measurements in terrestrial climate change experiments and observational studies (ClimEx)
Halbritter Rechsteiner, Aud Helen; De Boeck, Hans J.; Eycott, Amy Elizabeth; Reinsch, Sabine; Robinson, David A.; Vicca, Sara; Berauer, Bernd; Christiansen, Casper Tai; Estiarte, Marc; Grünzweig, José M.; Gya, Ragnhild; Hansen, Karin; Jentsch, Anke; Lee, Hanna; Linder, Sune; Marshall, John; Peñuelas, Josep; Schmidt, Inger Kappel; Stuart-Haëntjens, Ellen; Wilfahrt, Peter; Vandvik, Vigdis; Abrantes, Nelson; Almagro, María; Althuizen, Inge; Barrio, Isabel C.; te Beest, Mariska; Beier, Claus; Beil, Iilka; Berry, Z. Carter; Birkemoe, Tone; Bjerke, Jarle W.; Blonder, Benjamin; Blume-Werry, Gesche; Bohrer, Gil; Campos, Isabel; Cernusak, Lucas S.; Chojnicki, Bogdan H.; Cosby, Bernhard J.; Dickman, Lee T.; Djukic, Ika; Filella, Iolanda; Fuchslueger, Lucia; Gargallo-Garriga, Albert; Gillespie, Mark Andrew; Goldsmith, Gregory R.; Gough, Christopher; Halliday, Fletcher W.; Hegland, Stein Joar; Hoch, Gunter; Holub, Petr; Jaroszynska, Francesca Orinda Holl; Johnson, Daniel M.; Jones, Scott B.; Kardol, Paul; Keizer, Jan J.; Klem, Karel; Konestabo, Heidi Sjursen; Kreyling, Jürgen; Kröel-Dulay, György; Landhäusser, Simon M.; Larsen, Klaus S.; Leblans, Niki; Lebron, Inma; Lehmann, Marco M.; Lembrechts, Jonas J.; Lenz, Armando; Linstädter, Anja; Llusià, Joan; Macias-Fauria, Marc; Malyshev, Andrey V.; Mänd, Pille; Marshall, Miles; Matheny, Ashley M.; McDowell, Nate; Meier, Ina C.; Meinzer, Frederick C.; Michaletz, Sean T.; Miller, Megan L.; Muffler, Lena; Oravec, Michal; Ostonen, Ivika; Porcar-Castell, Albert; Preece, Catherine; Prentice, Iain C.; Radujković, Dajana; Ravolainen, Virve; Ribbons, Relena; Ruppert, Jan C.; Sack, Lawren; Sardans, Jordi; Schindlbacher, Andreas; Scoffoni, Christine; Sigurdsson, Bjarni D.; Smart, Simon M; Smith, Stuart; Soper, Fiona; Speed, James David Mervyn; Sverdrup-Thygeson, Anne; Sydenham, Markus A. K.; Taghizadeh-Toosi, Arezoo; Telford, Richard J.; Tielborger, Katja; Töpper, Joachim Paul; Urban, Otmar; van der Ploeg, Martine; Van Langenhove, Leandro; Večeřová, Kristýna; Ven, Arne; Verbruggen, Erik; Vik, Unni; Weigel, Robert; Wohlgemuth, Thomas; Wood, Lauren K.; Zinnert, Julie; Zurba, Kamal (Journal article; Peer reviewed, 2019)1. Climate change is a world-wide threat to biodiversity and ecosystem structure, functioning and services. To understand the underlying drivers and mechanisms, and to predict the consequences for nature and people, we ... -
The importance of herbivore density and management as determinants of the distribution of rare plant species
Speed, James David Mervyn; Austrheim, Gunnar (Journal article; Peer reviewed, 2016)Herbivores are often drivers of ecosystem states and dynamics and in many situations are managed either as livestock or through controlled or exploitative hunting of wild populations. Changes in herbivore density can affect ... -
The Response of Alpine Salix Shrubs to Long-Term Browsing Varies with Elevation and Herbivore Density
Speed, James David Mervyn; Austrheim, Gunnar; Hester, Alison J.; Mysterud, Atle (Journal article; Peer reviewed, 2013)The widespread expansion of shrubs into arctic and alpine regions has frequently been linked to climatic warming, but herbivory can play a role in addition to, or in interaction with, climate. Willow (Salix spp.) shrubs ... -
Traditional plant functional groups explain variation in economic but not size‐related traits across the tundra biome
Thomas, Haydn J.D.; Myers-Smith, Isla H.; Bjorkman, Anne D.; Elmendorf, Sarah C.; Blok, Daan; Cornelissen, Johannes H. C.; Forbes, Bruce C.; Hollister, Robert D.; Normand, Signe; Prevéy, Janet S.; Rixen, C; Schaepman-Strub, G; Wilmking, M; Wipf, S; Cornwell, W; Kattge, J; Goetz, SJ; Guay, KC; Alatalo, JM; Anadon-Rosell, A; Angers-Blondin, S; Berner, LT; Björk, RG; Buchwal, A; Buras, A; Carbognani, M; Christie, K; Siegwart Collier, L; Cooper, Elisabeth J.; Eskelinen, A; Frei, ER; Grau, O; Grogan, P; Hallinger, M; Heijman, MMPD; Hermanutz, L; Hudson, JMG; Hulber, K; Iturrate-Garcia, M; Iversen, CM; Jaroszynska, Francesca Orinda Holl; Johnstone, JF; Kaarlejärvi, E; Kulonen, A; Lamarque, LJ; Lévesque, E; Little, CJ; Michelsen, A; Milbau, A; Nabe-Nielsen, J; Nielsen, SS; Ninot, JM; Oberbauer, SF; Olofsson, J; Onipchenko, VG; Petraglia, A; Rumpf, SB; Semenchuk, Philipp; Soudzilovskaia, NA; Spasojevic, MJ; Speed, James David Mervyn; Tape, KD; Te Beest, M; Tomaselli, M; Trant, A; Treier, UA; Venn, S; Vowles, T; Weijers, S; Zamin, T; Atkin, OK; Bahn, M; Blonder, B; Campetella, G; Cerabolini, BEL; Chapin III, FS; Dainese, M; de Vries, FT; Díaz, S; Green, W; Jackson, R; Manning, P; Niinemets, Ü; Ozinga, WA; Penuelas, J; Reich, PB; Schamp, B; Sheremetev, S; van Bodegom, Peter Michiel (Journal article; Peer reviewed, 2018)Aim : Plant functional groups are widely used in community ecology and earth system modelling to describe trait variation within and across plant communities. However, this approach rests on the assumption that functional ... -
Trophic interactions and abiotic factors drive functional and phylogenetic structure of vertebrate herbivore communities across the Arctic tundra biome
Speed, James David Mervyn; Skjelbred, Ina Åsnes; Barrio, Isabel C.; Martin, Michael David; Berteaux, Dominique; Bueno, Guillermo; Christie, Katie; Forbes, Bruce C.; Forbey, Jennifer; Fortin, Daniel; Grytnes, John-Arvid; Hoset, Katrine Skamfer; Lecomte, Nicolas; Marteinsdottir, Bryndis; Mosbacher, Jesper Bruun; Pedersen, Åshild Ø.; Ravolainen, Virve; Rees, Eileen C.; Skarin, Anna; Sokolova, Natalya; Thornhill, Andrew H; Tombre, Ingunn; Soininen, Eeva M (Journal article; Peer reviewed, 2019)Communities are assembled from species that evolve or colonise a given geographic region, and persist in the face of abiotic conditions and interactions with other species. The evolutionary and colonisation histories of ... -
Tundra Trait Team: A database of plant traits spanning the tundra biome
Bjorkman, Anne D.; Myers-Smith, Isla H.; Elmendorf, Sarah C.; Normand, Signe; Thomas, Haydn J.D.; Alatalo, Juha M.; Alexander, Heather; Anadon-Rosell, Alba; Angers-Blondin, Sandra; Bai, Yang; Baruah, Gaurav; te Beest, Mariska; Berner, Logan; Björk, Robert G.; Blok, Daan; Bruelheide, Helge; Buchwal, Agata; Buras, Allan; Carbognani, Michele; Christie, Katherine; Collier, Laura Siegwart; Cooper, Elisabeth J.; Cornelissen, J. Hans C.; Dickinson, Katharine J.M.; Dullinger, Stefan; Elberling, Bo; Eskelinen, Anu; Forbes, Bruce C.; Frei, Esther R.; Iturrate-Garcia, Maitane; Good, Megan K.; Grau, Oriol; Green, Peter; Greve, Michelle; Grogan, Paul; Haider, Sylvia; Hájek, Tomáš; Hallinger, Martin; Happonen, Konsta; Harper, Karen A.; Heijmans, Monicque M.P.D.; Henry, Gregory H.R.; Hermanutz, Luise; Hewitt, Rebecca E.; Hollister, Robert D.; Hudson, James; Hülber, Karl; Iversen, Colleen M.; Jaroszynska, Francesca; Jiménez-Alfaro, Borja; Johnstone, Jill; Jørgensen, Rasmus Halfdan; Kaarlejärvi, Elina; Klady, Rebecca; Klimešová, Jitka; Korsten, Annika; Kuleza, Sara; Kulonen, Aino; Lamarque, Laurent J.; Lantz, Trevor; Lavalle, Amanda; Lembrechts, Jonas J.; Lévesque, Esther; Little, Chelsea J.; Luoto, Miska; Macek, Petr; Mack, Michelle C.; Mathakutha, Rabia; Michelsen, Anders; Milbau, Ann; Molau, Ulf; Morgan, John W.; Mörsdorf, Martin Alfons; Nabe-Nielsen, Jacob; Nielsen, Sigrid Schøler; Ninot, Josep M.; Oberbauer, Steven F.; Olofsson, Johan; Onipchenko, Vladimir G.; Petraglia, Alessandro; Pickering, Catherine; Prevéy, Janet S.; Rixen, Christian; Rumpf, Sabine Bettina; Schaepman-Strub, Gabriela; Semenchuk, Philipp; Shetti, Rohan; Soudzilovskaia, Nadejda A.; Spasojevic, Marko J.; Speed, James David Mervyn; Street, Lorna E.; Suding, Katharine; Tape, Ken D.; Tomaselli, Marcello; Trant, Andrew; Treier, Urs A.; Tremblay, Jean-Pierre; Tremblay, Maxime; Venn, Susanna; Virkkala, Anna-Maria; Vowles, Tage; Weijers, Stef; Wilmking, Martin; Wipf, Sonja; Zamin, Tara (Journal article; Peer reviewed, 2018)Motivation The Tundra Trait Team (TTT) database includes field‐based measurements of key traits related to plant form and function at multiple sites across the tundra biome. This dataset can be used to address theoretical ... -
Urban aliens and threatened near-naturals: Land-cover affects the species richness of alien- and threatened species in an urban-rural setting
Petersen, Tanja Kofod; Speed, James David Mervyn; Grøtan, Vidar; Austrheim, Gunnar (Peer reviewed; Journal article, 2020)Urbanisation has strong effects on biodiversity patterns, but impacts vary among species groups and across spatial scales. From a local biodiversity management perspective, a more general understanding of species richness ... -
Urbanisation and land-cover change affect functional, but not compositional turnover of bird communities
Petersen, Tanja Kofod; Speed, James David Mervyn; Grøtan, Vidar; Frøyen, Yngve Karl; Austrheim, Gunnar (Peer reviewed; Journal article, 2023)Liver sinusoidal endothelial cells (LSECs) are fenestrated endothelial cells with a unique, high endocytic clearance capacity for blood-borne waste macromolecules and colloids. This LSEC scavenger function has been ... -
What are the effects of herbivore diversity on tundra ecosystems? A systematic review protocol
Barrio, Isabel C.; Barbero-Palacios, Laura; Kaarlejärvi, Elina; Speed, James David Mervyn; Heiðmarsson, Starri; Hik, David S.; Soininen, Eeva M (Peer reviewed; Journal article, 2022)Background Changes in the diversity of herbivore communities can strongly influence the functioning of northern ecosystems. Different herbivores have different impacts on ecosystems because of differences in their diets, ... -
What evidence exists for temporal variability in Arctic terrestrial and freshwater biodiversity throughout the Holocene? A systematic map protocol
Martin, Andrew C.; Assmann, Jakob J.; Bradshaw, Richard H. W.; Kuoppamaa, Mari; Kuosmanen, Niina I; Normand, Signe; Speed, James David Mervyn; Macias-Fauria, Marc (Peer reviewed; Journal article, 2022)Background The Arctic tundra is subject to the greatest climate change-induced temperature rises of any biome. Both terrestrial and freshwater biota are responding to recent climate warming through variability in their ... -
What is the influence of a reduction of planktivorous and benthivorous fish on water quality in temperate eutrophic lakes? A systematic review
Bernes, Claes; Carpenter, Stephen R.; Gårdmark, Anna; Larsson, Per; Persson, Lennart; Skov, Christian; Speed, James David Mervyn; van Donk, Ellen (Peer reviewed; Journal article, 2015)Background:In recent decades, many attempts have been made to restore eutrophic lakes through biomanipulation.Reducing the populations of planktivorous and benthivorous fish (either directly or through stocking of piscivorous ... -
Why don't all species overexploit?
Vuorinen, Katariina Elsa Maria; Oksanen, Tarja Maarit; Oksanen, Lauri; Vuorisalo, Timo; Speed, James David Mervyn (Peer reviewed; Journal article, 2021)Overexploitation of natural resources is often viewed as a problem characteristic of only the human species. However, any species could evolve a capacity to overexploit its essential resources through natural selection and ... -
Will borealization of Arctic tundra herbivore communities be driven by climate warming or vegetation change?
Speed, James David Mervyn; Chimal-Ballesteros, J. Adrian; Martin, Michael D.; Barrio, Isabel C.; Vuorinen, Katariina Elsa Maria; Soininen, Eeva M (Peer reviewed; Journal article, 2021)Poleward shifts in species distributions are expected and frequently observed with a warming climate. In Arctic ecosystems, the strong warming trends are associated with increasing greenness and shrubification. Vertebrate ...