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Auteur Peter Sunde |
Documents disponibles écrits par cet auteur (22)
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Henning Heldbjerg, Auteur ; Peter Sunde, Auteur ; Anthony David Fox, AuteurThe 2020 EU biodiversity strategy aims to halt the loss of biodiversity and ecosystem services, but this requires effective monitoring to determine whether these aims are achieved. Common bird monitoring continuously assesses changes in the avia[...]Article
Steffen Larni Nielsen, Auteur ; Bjarke Madsen, Auteur ; Thomas Eske Holm, Auteur ; Peter Sunde, AuteurArticle
Peter Sunde, Auteur ; Pernille Johansen Naundrup, AuteurThe post-fledging dependency period (PFDP: from fledging to cessation of parental care) is a critical yet poorly studied life history transition phase during which juveniles mature and develop skills for independence. We studied the spatial and [...]Article
Anthony D. Fox, Auteur ; Kevin Kuhlmann Clausen, Auteur ; Lars Dalby, Auteur ; Thomas Kjaer Christensen, Auteur ; Peter Sunde, AuteurWe compared age and sex ratios amongst Eurasian Wigeon (Anas penelope) derived from Danish field observations and hunter-based shot samples throughout an entire winter in two consecutive years. In the middle period of both winters, sex ratios di[...]Article
Anthony D. Fox, Auteur ; Kevin Kuhlmann Clausen, Auteur ; Lars Dalby, Auteur ; Thomas Kjær Christensen, Auteur ; Peter Sunde, AuteurWe compared age and sex ratios among Eurasian Wigeon Anas penelope derived from Danish field observations and hunter-based shot samples throughout an entire winter. Sex ratios did not differ significantly between the two samples. Overall, first-[...]Article
Anthony D. Fox, Auteur ; Kevin Kuhlmann Clausen, Auteur ; Lars Dalby, Auteur ; Thomas Kjaer Christensen, Auteur ; Peter Sunde, AuteurWe compared age and sex ratios among Eurasian Wigeon Anas penelope derived from Danish field observations and hunter-based shot samples throughout an entire winter. Sex ratios did not differ significantly between the two samples. Overall, first-[...]Article
Nicholas Per Huffeldt, Auteur ; Iben Noes Aggerholm, Auteur ; Nathia Hass Brandtberg, Auteur ; Jacob Hjorth Jorgensen, Auteur ; Klaus Dichmann, Auteur ; Peter Sunde, AuteurCapsule Recovery distances of Barn Owls ringed as pulli are conditional on ringing date but not on population density. Aims To test whether ring recovery distances (proxy for natal dispersal distances) were conditional on population density and [...]Article
Breeding season food limitation drives population decline of the Little Owl Athene noctua in Denmark
Kasper Thorup, Auteur ; Peter Sunde, Auteur ; Lars B. Jacobsen, Auteur ; Carsten Rahbek, AuteurMany farmland bird species have declined markedly in Europe in recent decades because of changes in agricultural practice. The specific causes vary and are poorly known for many species. The Little Owl, which feeds extensively on large invertebr[...]Article
Lars Bo Jacobsen, Auteur ; Monika Chrenkova, Auteur ; Peter Sunde, Auteur ; Martin Salek, Auteur ; Kasper Thorup, AuteurThe population of Little Owls in Denmark is close to extinction. The main cause is food limitation during the breeding season. Efforts to improve breeding success include providing breeding pairs with supplementary food and attempts to improve f[...]Article
Peter Sunde, Auteur ; Peter Odderskaer, Auteur ; Kurt Storgaard, AuteurIn a Danish landscape with relatively high (134/km(2)) but variable human density, 86% of 213 incubating Common Buzzards Buteo buteo flushed from the nest at distances of 0-200 m in response to a person approaching on foot. Flight distances were[...]Article
Marcel M. Lambrechts, Auteur ; Karen L. Wiebe, Auteur ; Peter Sunde, Auteur ; Tapio Solonen, Auteur ; Fabrizio Sergio, Auteur ; Alexandre Roulin, Auteur ; Anders Pape Moller, Auteur ; Bernat C. Lopez, Auteur ; Juan A. Fargallo, Auteur ; Klaus-Michael Exo, Auteur ; Giacomo Dell'Omo, Auteur ; David Costantini, Auteur ; Motti Charter, Auteur ; Michael W. Butler, Auteur ; Gary R. Bortolotti, Auteur ; Raphaël Arlettaz, Auteur ; Erkki Korpimaeki, AuteurThe use of artificial nest boxes has led to significant progress in bird conservation and in our understanding of the functional and evolutionary ecology of free-ranging birds that exploit cavities for roosting and reproduction. Nest boxes and t[...]Article
Peter Sunde, AuteurIn species defending territories, fitness of newly independent juveniles could depend on phenotypic quality or early access to vacant resources as a result of rapid dispersal. In the first case, parent-offspring conflict will arise when parents [...]Article
Line H. Andersen, Auteur ; Peter Sunde, Auteur ; Volker Loeschcke, Auteur ; Cino Pertoldi, AuteurWhen a bird population is facing extinction, ecologically artificial conservation actions such as feeding and captive breeding may be considered as temporary efforts to rescue the population remains until environmental conditions for a self-sust[...]Article
Dorthe Pedersen, Auteur ; Kasper Thorup, Auteur ; Peter Sunde, Auteur ; Lars Bo Jacobsen, Auteur ; Carsten Rahbek, AuteurBefore dispersal, social and spatial behaviour in owls has only been briefly studied. We used radio tracking to monitor age-influenced social and spatial behaviour in 10 juvenile Little Owls (Athene noctua) from nests in Northern Jutland, Denmar[...]Article
Rikke Anker Jensen, Auteur ; Peter Sunde, Auteur ; Gosta Nachman, AuteurWildlife management strategies can be improved by accurate predictions of species distributions and sound estimates of population sizes. Species distribution models that relate occurrence or abundance of a species to environmental predictors can[...]Article
Kasper Thorup, Auteur ; Dorthe Pedersen, Auteur ; Peter Sunde, Auteur ; Lars Bo Jacobsen, Auteur ; Carsten Rahbek, AuteurSurvival rate is an essential component of population dynamics; therefore, identification of variation in mortality rates and the factors that influence them might be of key importance in understanding why populations increase or decrease. In De[...]Article
Kevin Kuhlmann Clausen, Auteur ; Lars Dalby, Auteur ; Peter Sunde, Auteur ; Thomas Kjaer Christensen, Auteur ; Bjarke Egelund, Auteur ; Anthony David Fox, AuteurDemographic monitoring is vital for tracking and modelling the population dynamics of highly mobile bird populations. However, different types of monitoring can sometimes lead to different outcomes, and understanding the causes of equivocal resu[...]Article
Peter Sunde, Auteur ; Kasper Thorup, Auteur ; Lars B. Jacobsen, Auteur ; Miriam H. Holsegard-Rasmussen, Auteur ; Nina Ottessen, Auteur ; Susanne Svenne, Auteur ; Carsten Rahbek, AuteurKnowledge of a species' spatial behaviour is essential for understanding its behavioural ecology, as well as a prerequisite to planning of conservation strategies. The Little Owl (Athene noctua) has shown a substantial decline in north-western E[...]Article
Kasi B. Desfor, Auteur ; Jacobus J. Boomsma, Auteur ; Peter Sunde, AuteurTawny Owls Strix aluco have been reported to skew the sex ratio of their offspring towards males when facing food shortage during the nestling period (and vice versa), because female fitness is more compromised by food shortage during developmen[...]Article
Lars B. Jacobsen, Auteur ; Peter Sunde, Auteur ; Carsten Rahbek, Auteur ; Torben Dabelsteen, Auteur ; Kasper Thorup, AuteurWith the aim of quantifying spatio-temporal and social factors affecting territorial calls in Little Owls, we collected data on the calling behaviour of radio tracked individuals from a low-density population in Northern Jutland, Denmark. There [...]Article
Miriam H. Holsegard-Rasmussen, Auteur ; Peter Sunde, Auteur ; Kasper Thorup, Auteur ; Lars B. Jacobsen, Auteur ; Nina Ottesen, Auteur ; Susanne Svenne, Auteur ; Carsten Rahbek, AuteurDans Ardea (97(4) 2009)Locomotion is costly and should therefore serve a purpose according to the principle of optimal behaviour. In this light, we studied variation in nocturnal activity of radio-tagged Little Owls Athene noctua in Denmark where, after a decline of a[...]Article
Jesper Stern Nielsen, Auteur ; Joachim Westergaard Lassen, Auteur ; Trine Bork Larsen, Auteur ; Helene Overgard, Auteur ; Iben Hove Sorensen, Auteur ; Klaus Dichmann, Auteur ; Peter Sunde, AuteurLive streaming from bird nests has become increasingly popular for educational purposes, but may also hold a research potential by enabling direct observations of food provisioning and social interactions, We used video recordings from an Eagle [...]