Blar i Scientific publications på forfatter "Nygård, Torgeir"
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Effect of tower base painting on willow ptarmigan collision rates with wind turbines
Stokke, Bård Gunnar; Nygård, Torgeir; Falkdalen, Ulla; Pedersen, Hans Christian; May, Roelof Frans (Peer reviewed; Journal article, 2020)1. Birds colliding with turbine rotor blades is a well-known negative consequence of wind-power plants. However, there has been far less attention to the risk of birds colliding with the turbine towers, and how to mitigate ... -
Feathers as an integrated measure of organohalogen contamination, its dietary sources and corticosterone in nestlings of a terrestrial bird of prey, the northern Goshawk (Accipiter gentilis)
Randulff, Sina Thu; Abbasi, Naeem A.; Eulaers, Igor; Nygård, Torgeir; Covaci, Adrian; Eens, Marcel; Malarvannan, Govindan; Lepoint, Gilles; Løseth, Mari Engvig; Jaspers, Veerle (Peer reviewed; Journal article, 2022) -
Habitat Utilization in White-Tailed Eagles (Haliaeetus albicilla) and the Displacement Impact of the Smøla Wind-Power Plant
May, Roelof Frans; Nygård, Torgeir; Dahl, Espen Lie; Bevanger, Kjetil Modolv (Peer reviewed; Journal article, 2013)On average, 7.8 white-tailed eagles (Haliaeetus albicilla) collide with wind turbines annually at the operating wind-power plant on the island of Smøla off the coast of central Norway. To better understand the impact of ... -
High-resolution modeling of uplift landscapes can inform micrositing of wind turbines for soaring raptors
Hanssen, Frank Ole; May, Roelof Frans; Nygård, Torgeir (Journal article, 2020)Collision risk of soaring birds is partly associated with updrafts to which they are attracted. To ident ify the risk-enhancinglandscape features, a micrositing tool was developed to model orographic and thermal updraft ... -
Home-range, movements and use of powerline poles of Eagle-Owls (Bubo bubo) at an island population in northern Norway
Nygård, Torgeir; Jacobsen, Karl-Otto; Gjershaug, Jan Ove (Peer reviewed; Journal article, 2023)A dense island population of Eagle-Owls (Bubo bubo) close to the Arctic circle had suffered considerable mortality due to powerlines (electrocution and collision) throughout many decades. A study using GPS transmitter ... -
How many routes lead to migration? Comparison of methods to assess and characterize migratory movements
Cagnacci, Francesca; Focardi, Stefano; Ghisla, Anne; Van Moorter, Bram; Merril, Evelyn H.; Gurarie, Eliezer; Heurich, Marco; Mysterud, Atle; Linnell, John Durrus; Panzacchi, Manuela; May, Roelof Frans; Nygård, Torgeir; Rolandsen, Christer Moe; Hebblewhite, Mark (Journal article; Peer reviewed, 2016)Summary 1. Decreasing rate of migration in several species as a consequence of climate change and anthropic pressure, together with increasing evidence of space-use strategies intermediate between residency and complete ... -
Paint it black: Efficacy of increased wind turbine rotor blade visibility to reduce avian fatalities
May, Roelof Frans; Nygård, Torgeir; Falkdalen, Ulla; Åström, Jens; Hamre, Øyvind; Stokke, Bård Gunnar (Peer reviewed; Journal article, 2020)As wind energy deployment increases and larger wind-power plants are considered, bird fatalities through collision with moving turbine rotor blades are expected to increase. However, few (cost-) effective deterrent or ... -
Paint it black: Efficacy of increased wind turbine rotor blade visibility to reduce avian fatalities
May, Roelof Frans; Nygård, Torgeir; Falkdalen, Ulla; Åström, Jens; Hamre, Øyvind; Stokke, Bård Gunnar (Peer reviewed; Journal article, 2020)As wind energy deployment increases and larger wind-power plants are considered, bird fatalities through collision with moving turbine rotor blades are expected to increase. However, few (cost-) effective deterrent or ... -
Population recovery of peregrine falcons in central Norway in the 4 decades since the DDT-ban
Nygård, Torgeir; Sandercock, Brett; Reinsborg, Tore; Einvik, Kjell (Peer reviewed; Journal article, 2019)The breeding population of peregrine falcons (Falco peregrinus) in Norway was almost exterminated by the early 1970’s. Long-term monitoring of breeding pairs has been conducted since 1976 up to present. Peregrine falcons ... -
Raptor Interactions with Wind Energy: Case Studies from Around the World
Watson, Richard T.; Kolar, Patrick S; Ferrer, Miguel; Nygård, Torgeir; Johnston, Naira; Hunt, W; Smit-Robinson, Hanneline A; Farmer, Christopher J; Huso, Manuela; Katzner, Todd E (Peer reviewed; Journal article, 2018)The global potential for wind power generation is vast, and the number of installations is increasing rapidly. We review case studies from around the world of the effects on raptors of wind-energy development. Collision ... -
Resource utilization by the Kori bustard in the Serengeti ecosystem
Mmassy, Emmanuel Clamsen; May, Roel; Jackson, Craig; Kleven, Oddmund; Nygård, Torgeir; Bevanger, Kjetil; Røskaft, Eivin (Peer reviewed; Journal article, 2019)This study aimed to understand the movement behaviour and utilization distributions of Kori bustards in space and time in the Serengeti ecosystem. A total of 14 individuals were tracked with the aid of GPS (Geographical ... -
Wildlife Camera Monitoring Revealed the Northern Goshawk as a Predator on Gyrfalcon Nestlings
Moen, Børje Cato; Kroglund, Rolf Terje; Østnes, Jan Eivind; Nilsen, Erlend Birkeland; Nygård, Torgeir (Peer reviewed; Journal article, 2023)Accipiter gentilis; Falco rusticolus; intraguild predation; nestling; nocturnal foraging; predation.