Research Topics
| Anders HedenströmSummaryAffiliation: Lund University Country: Sweden Publications
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Detail Information
Publications
Power and metabolic scope of bird flight: a phylogenetic analysis of biomechanical predictionsAnders Hedenström
Department of Theoretical Ecology, Lund University, Ecology Building, 223 62, Lund, Sweden
J Comp Physiol A Neuroethol Sens Neural Behav Physiol 194:685-91. 2008..Body mass scaling exponents of P (scope) differed significantly from 0 in all cases, and so P (scope) showed a positive body mass scaling in birds in accordance with the prediction...
Beyond robins: aerodynamic analyses of animal flightAnders Hedenström
Department of Theoretical Ecology, Lund University, Ecology Building, 223 62 Lund, Sweden
J R Soc Interface 5:595-601. 2008..The reasons for these apparently divergent results are discussed and prospects for future advances are considered...- Bird or bat: comparing airframe design and flight performanceAnders Hedenström
Department of Theoretical Ecology, Lund, Sweden
Bioinspir Biomim 4:015001. 2009..Both groups share many characteristics associated with flight, such as for example low amounts of DNA in cells, the ability to accumulate fat as fuel for hibernation and migration, and parallel habitat-related wing shape adaptations... 
Bat flight generates complex aerodynamic tracksA Hedenstrom
Department of Theoretical Ecology, Lund University, SE 223 62 Lund, Sweden
Science 316:894-7. 2007..Our interpretations of the unsteady aerodynamic performance and function of membranous-winged, flapping flight should change modeling strategies for the study of equivalent natural and engineered flying devices...- Adaptations to migration in birds: behavioural strategies, morphology and scaling effectsAnders Hedenström
Department of Theoretical Ecology, Lund University, Ecology Building, 223 62 Lund, Sweden
Philos Trans R Soc Lond B Biol Sci 363:287-99. 2008..I also briefly discuss how the optimal policy may be implemented by the bird by applying a set of simple rules. The time constraints on migrants increase with increasing body size. Some consequences of this are discussed... - Vortex wakes generated by robins Erithacus rubecula during free flight in a wind tunnelA Hedenstrom
Department of Theoretical Ecology Ecology, Lund University, Ecology Building, 223 62 Lund, Sweden
J R Soc Interface 3:263-76. 2006..The measured circulations of the largest structures in the wake can be predicted quite well by simple models, and expressions are given to predict these and other measurable quantities in future bird flight experiments... - Comparing aerodynamic efficiency in birds and bats suggests better flight performance in birdsFlorian T Muijres
Department of Biology, Lund University, Lund, Sweden
PLoS ONE 7:e37335. 2012.... - A quantitative comparison of bird and bat wakesL Christoffer Johansson
Department of Theoretical Ecology, Lund University, Solvegatan 37, 223 62 Lund, Sweden
J R Soc Interface 7:61-6. 2010..Our results thus indicate fundamental differences in the aerodynamics of bird and bat flight that will further our understanding of the evolution of vertebrate flight... - Kinematics of flight and the relationship to the vortex wake of a Pallas' long tongued bat (Glossophaga soricina)Marta Wolf
Department of Biology, Lund University, Solvegatan 37, SE 223 62 Lund, Sweden
J Exp Biol 213:2142-53. 2010..This study of the kinematics strongly indicates that the flight of bats is governed by an unsteady high-lift mechanism at low flight speeds and points to differences between birds and bats... - Leading edge vortex in a slow-flying passerineFlorian T Muijres
Department of Biology, Lund University, Solvegatan 37, 223 62 Lund, Sweden
Biol Lett 8:554-7. 2012..This is correlated with a spanwise reduction of the wing's angle-of-attack, partly owing to upward bending of primary feathers. We suggest that this helps to delay bursting and shedding of the particularly strong LEV in passerines... - The near and far wake of Pallas' long tongued bat (Glossophaga soricina)L Christoffer Johansson
Department of Theoretical Ecology, Lund University, Solvegatan 37, SE 223 62 Lund, Sweden
J Exp Biol 211:2909-18. 2008.... - Aerodynamic flight performance in flap-gliding birds and batsFlorian T Muijres
Department of Biology, Lund University, Ecology Building, 223 62 Lund, Sweden
J Theor Biol 306:120-8. 2012..The results show that flap-gliding flight that is naturally used by common swifts is indeed the most economic one of the two flight modes, while this is not the case for the non-flap-gliding lesser long-nosed bat... - Comparative aerodynamic performance of flapping flight in two bat species using time-resolved wake visualizationFlorian T Muijres
Animal Flight Laboratory, Department of Biology, Lund University, Solvegatan 37, 223 62 Lund, Sweden
J R Soc Interface 8:1418-28. 2011.... - Elytra boost lift, but reduce aerodynamic efficiency in flying beetlesL Christoffer Johansson
Department of Biology, Lund University, 22362 Lund, Sweden
J R Soc Interface 9:2745-8. 2012..77 at mid downstroke. This is lower than that found in birds and bats, suggesting that the extra weight support of the elytra comes at the price of reduced efficiency... - Vortex wake, downwash distribution, aerodynamic performance and wingbeat kinematics in slow-flying pied flycatchersFlorian T Muijres
Department of Biology, Lund University, Solvegatan 37, 223 62 Lund, Sweden
J R Soc Interface 9:292-303. 2012..Thus, for slow-flying passerines, the upstroke cannot be regarded as inactive, and the tail may be of importance for flight efficiency and possibly manoeuvrability... - Resistance of flight feathers to mechanical fatigue covaries with moult strategy in two warbler speciesThomas P Weber
Department of Animal Ecology, Ecology Building, Lund University, Solvegatan 37, S 223 62 Lund, Sweden
Biol Lett 1:27-30. 2005..We propose that willow warblers may strengthen their flight feathers by increasing the diameter of the shaft, which may lead to a more rapid accumulation of damage in willow warblers than in chiffchaffs... - Leading-edge vortex improves lift in slow-flying batsF T Muijres
Department of Theoretical Ecology, Lund University, SE 223 62 Lund, Sweden
Science 319:1250-3. 2008..Our results show that the use of unsteady aerodynamic mechanisms in flapping flight is not limited to insects but is also used by larger and heavier animals... - Migration routes and strategies in a highly aerial migrant, the common swift Apus apus, revealed by light-level geolocatorsSusanne Akesson
Department of Biology, Lund University, Lund, Sweden
PLoS ONE 7:e41195. 2012.... - Vortex wake and flight kinematics of a swift in cruising flight in a wind tunnelP Henningsson
Department of Theoretical Ecology, Lund University, Lund, Sweden
J Exp Biol 211:717-30. 2008..The total drag was also estimated from the wake alone, and the calculated lift:drag ratio of approximately 13 for flapping flight is the highest measured yet for birds... - Flight speeds of swifts (Apus apus): seasonal differences smaller than expectedP Henningsson
Department of Theoretical Ecology, Lund University, 223 62 Lund, Sweden
Proc Biol Sci 276:2395-401. 2009..Furthermore, the difference between flight speeds during migration and roosting among swifts was found to be less pronounced than previously recorded... - The vortex wake of blackcaps (Sylvia atricapilla L.) measured using high-speed digital particle image velocimetry (DPIV)L C Johansson
Department of Theoretical Ecology, Lund University, Ecology Building, SE 223 62 Lund, Sweden
J Exp Biol 212:3365-76. 2009..Neither did we find support for the hypothesis that the tail should reduce the drag of the bird. The function of the tail during steady flight thus remains unclear and calls for further investigation in future studies... - The relationship between wingbeat kinematics and vortex wake of a thrush nightingaleM Rosen
Department of Animal Ecology, Lund University, Ecology Building, SE 223 62 Lund, Sweden
J Exp Biol 207:4255-68. 2004..More complex interactions between the wake and wings and/or body are implied... - A polar system of intercontinental bird migrationThomas Alerstam
Department of Animal Ecology, Lund University, Ecology Building, 223 62 Lund, Sweden
Proc Biol Sci 274:2523-30. 2007.... - Climate change and the optimal arrival of migratory birdsNiclas Jonzen
Department of Theoretical Ecology, Lund University, Ecology Building, 223 62 Lund, Sweden
Proc Biol Sci 274:269-74. 2007..Our results also show that we should expect the high variation of trends in arrival date observed among migratory birds, even if migration and information about climate change were unconstrained... - The role of wind-tunnel studies in integrative research on migration biologySophia Engel
Department of Biology, Theoretical Ecology, Lund University, Lund, Sweden 22362
Integr Comp Biol 50:323-35. 2010..Wind tunnels and swim tunnels will therefore continue to be important tools we can use for studying integrative migration biology... - Gliding flight in a jackdaw: a wind tunnel studyM Rosen
Department of Animal Ecology, Lund University, Ecology Building, SE 223 62 Lund, Sweden
J Exp Biol 204:1153-66. 2001..These alternative equations can be used in combination with any model of gliding flight where wing area and wingspan are considered to calculate sinking rate with respect to forward speed... - Wake structure and wingbeat kinematics of a house-martin Delichon urbicaM Rosen
Department of Animal Ecology, Lund University, Ecology Building, 223 62 Lund, Sweden
J R Soc Interface 4:659-68. 2007..The local Reynolds numbers of the wing sections are sufficiently low that the well-known instabilities of attached laminar flows over lifting surfaces, which are known to occur at two to three times this value, may not develop... - Field estimates of body drag coefficient on the basis of dives in passerine birdsA Hedenstrom
Department of Animal Ecology, Ecology Building, SE 223 62 Lund, Sweden
J Exp Biol 204:1167-75. 2001..Our measurements therefore support the notion that 0.4 (the 'old' default value) is a realistic value of C(D,par) for small passerines... - Grand challenges in migration biologyMelissa S Bowlin
Department of Biology, Theoretical Ecology, Ecology Building, Lund University, Lund, Sweden 22362
Integr Comp Biol 50:261-79. 2010.... - Optimal stopover decisions under wind influence: the effects of correlated windsT P Weber
Department of Animal Ecology, Lund University, Ecology Building, Lund, S 223 62, Sweden
J Theor Biol 205:95-104. 2000..An analysis of six years of wind data from two sites in Sweden shows that wind directions on successive days are in fact correlated in all years... - Flight performance during hunting excursions in Eleonora's falcon Falco eleonoraeA Hedenstrom
Department of Animal Ecology, Lund University, Ecology Building, S 223 62 Lund, Sweden
J Exp Biol 202:2029-39. 1999..This climb rate was 0.36 m s-1, and our observations indicated that the falcons experienced climb rates above this value when soaring in slope-lift... - Energetics, cost reduction and functional consequences of fish morphologyL B Pettersson
Department of Ecology, Lund, Sweden
Proc Biol Sci 267:759-64. 2000..The results have important implications for the evolution of morphological diversity in fishes...