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Extreme altitude ch...
Extreme altitude changes between night and day during marathon flights of great snipes
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- Lindström, Åke (författare)
- Lund University,Lunds universitet,Biodiversitet,Biologiska institutionen,Naturvetenskapliga fakulteten,Biodiversitet och bevarandevetenskap,Forskargrupper vid Lunds universitet,CAnMove - Centrum för forskning om djurs spridning och flyttning,Biodiversity,Department of Biology,Faculty of Science,Biodiversity and Conservation Science,Lund University Research Groups,CAnMove - Centre for Animal Movement Research,Lund Univ, Dept Biol, Ecol Bldg, SE-22362 Lund, Sweden.
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- Alerstam, Thomas (författare)
- Lund University,Lunds universitet,Evolutionär ekologi,Biologiska institutionen,Naturvetenskapliga fakulteten,CAnMove - Centrum för forskning om djurs spridning och flyttning,Forskargrupper vid Lunds universitet,Evolutionary ecology,Department of Biology,Faculty of Science,CAnMove - Centre for Animal Movement Research,Lund University Research Groups,Lund Univ, Dept Biol, Ecol Bldg, SE-22362 Lund, Sweden.
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- Andersson, Arne (författare)
- Lund University,Lunds universitet,Evolutionär ekologi,Biologiska institutionen,Naturvetenskapliga fakulteten,CAnMove - Centrum för forskning om djurs spridning och flyttning,Forskargrupper vid Lunds universitet,Evolutionary ecology,Department of Biology,Faculty of Science,CAnMove - Centre for Animal Movement Research,Lund University Research Groups,Lund Univ, Dept Biol, Ecol Bldg, SE-22362 Lund, Sweden.
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- Bäckman, Johan (författare)
- Lund University,Lunds universitet,Evolutionär ekologi,Biologiska institutionen,Naturvetenskapliga fakulteten,CAnMove - Centrum för forskning om djurs spridning och flyttning,Forskargrupper vid Lunds universitet,Evolutionary ecology,Department of Biology,Faculty of Science,CAnMove - Centre for Animal Movement Research,Lund University Research Groups,Lund Univ, Dept Biol, Ecol Bldg, SE-22362 Lund, Sweden.
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- Bahlenberg, Peter (författare)
- Lake Ånnsjön Bird Observatory,Lake Annsjon Bird Observ, Handol 563, SE-83015 Duved, Sweden.
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- Bom, Roeland (författare)
- Royal Netherlands Institute of Sea Research,NIOZ Royal Netherlands Inst Sea Res, Dept Coastal Syst, POB 59, NL-1790 AB Den Burg, Texel, Netherlands.
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- Ekblom, Robert, Docent, 1976- (författare)
- Uppsala universitet,Uppsala University,Swedish Environmental Protection Agency,Evolutionsbiologi,Swedish Environm Protect Agcy, SE-10648 Stockholm, Sweden.
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- Klaassen, Raymond H.G. (författare)
- University of Groningen,Univ Groningen, GELIFES, Conservat Ecol Grp, Groningen, Netherlands.
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- Korniluk, Michał (författare)
- Museum and Institute of Zoology of the Polish Academy of Sciences,Museum & Inst Zool PAS, Warsaw, Poland.;Nat Int Polska, Bialystok, Poland.,Lund Univ, Dept Biol, Ecol Bldg, SE-22362 Lund, Sweden.
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- Sjöberg, Sissel (författare)
- Lund University,Lunds universitet,Evolutionär ekologi,Biologiska institutionen,Naturvetenskapliga fakulteten,CAnMove - Centrum för forskning om djurs spridning och flyttning,Forskargrupper vid Lunds universitet,Evolutionary ecology,Department of Biology,Faculty of Science,CAnMove - Centre for Animal Movement Research,Lund University Research Groups,Lund Univ, Dept Biol, Ecol Bldg, SE-22362 Lund, Sweden.
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- Weber, Julia K.M. (författare)
- Lund University,Lunds universitet,Biodiversitet,Biologiska institutionen,Naturvetenskapliga fakulteten,Biodiversitet och bevarandevetenskap,Forskargrupper vid Lunds universitet,Biodiversity,Department of Biology,Faculty of Science,Biodiversity and Conservation Science,Lund University Research Groups
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(creator_code:org_t)
- Elsevier BV, 2021
- 2021
- Engelska.
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Ingår i: Current Biology. - : Elsevier BV. - 0960-9822 .- 1879-0445. ; 31:15, s. 3433-3439
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Abstract
Ämnesord
Stäng
- Summary Several factors affect the flight altitude of migratory birds, such as topography, ambient temperature, wind conditions, air humidity, predation avoidance, landmark orientation, and avoiding over-heating from direct sunlight.1, 2, 3, 4, 5, 6 Recent tracking of migratory birds over long distances has shown that migrants change flight altitude more commonly and dramatically than previously thought.4, 5, 6, 7, 8 The reasons behind these altitude changes are not well understood. In their seasonal migrations between Sweden and sub-Saharan Africa, great snipes Gallinago media make non-stop flights of 4,000–7,000 km, lasting 60–90 h.9,10 Activity and air pressure data from multisensor dataloggers showed that great snipes repeatedly changed altitudes around dawn and dusk, between average cruising heights about 2,000 m (above sea level) at night and around 4,000 m during daytime. Frequency and autocorrelation analyses corroborated a conspicuous diel cycle in flight altitude. Most birds regularly flew at 6,000 m and one bird reached 8,700 m, possibly the highest altitude ever recorded for an identified migrating bird. The diel altitude changes took place independently of climate zone, topography, and habitat overflown. Ambient temperature, wind condition, and humidity have no important diel variation at the high altitudes chosen by great snipes. Instead, improved view for orientation by landmarks, predator avoidance, and not least, seeking cold altitudes at day to counteract heating from direct sunlight are the most plausible explanations for the diel altitude cycle. Together with similar recent findings for a small songbird,6 the great snipes’ altitudinal performance sheds new light on the complexity and challenges of migratory flights.
Ämnesord
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
- NATURVETENSKAP -- Biologi -- Zoologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Zoology (hsv//eng)
Nyckelord
- wader
- shorebird
- migration
- flight altitude
- diel altitude cycle
- circadian pattern
- multisensor dataloggers
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Lindström, Åke
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Alerstam, Thomas
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Andersson, Arne
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Bäckman, Johan
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Bahlenberg, Pete ...
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Bom, Roeland
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visa fler...
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Ekblom, Robert, ...
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Klaassen, Raymon ...
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Korniluk, Michał
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Sjöberg, Sissel
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Weber, Julia K.M ...
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