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Auteur Thomas Bregnballe |
Documents disponibles écrits par cet auteur (29)
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Article
Johan H. Funder Castenschiold, Auteur ; Dan Bruhn, Auteur ; Cino Pertoldi, Auteur ; Thomas Bregnballe, AuteurSeveral wildlife censusing techniques depend on direct visual observations for detection and enumeration of populations. In terrain with challenging topography, awareness of areas where animals may not be visible is essential for reliable monito[...]NouveautéArticle
Karsten Laursen, Auteur ; Thomas Bregnballe, Auteur ; Romke Kleefstra, Auteur ; John Frikke, Auteur ; Klaus Günther, Auteur ; Menno Hornman, Auteur ; Claus L. Pedersen, Auteur ; Jan Blew, Auteur ; Anders Pape Møller, AuteurRegime shifts are likely to have strong impacts on all trophic levels and their interactions. In addition, weather conditions and sea level rise together with tidal currents may change sediment morphology in coastal areas and estuaries. Here, we[...]Article
Thomas Bregnballe, Auteur ; Christof Herrmann, Auteur ; Kjeld Tommy Pedersen, Auteur ; Juliane Wendt, Auteur ; Jelena Kralj, Auteur ; Morten Frederiksen, AuteurArticle
Christof Herrmann, Auteur ; Klaus-Dieter Feige, Auteur ; Daniel Otto, Auteur ; Thomas Bregnballe, AuteurArticle
Numbers of Great Cormorants Phalacrocorax carbo Wintering in the Western Palaearctic in January 2013
Mennobart R. van Eerden, Auteur ; Rosemarie Parz-Gollner, Auteur ; Loïc Marion, Auteur ; Thomas Bregnballe, Auteur ; Jean-Yves Paquet, Auteur ; Stefano Volponi, Auteur ; Stef van Rijn, Auteur ; David N. Carss, AuteurArticle
Thomas Bregnballe, Auteur ; Jesper Tofft, Auteur ; Jana Kotzerka, Auteur ; Aleksi Lehikoinen, Auteur ; Pekka Rusanen, Auteur ; Christof Herrmann, Auteur ; Oliver Krone, Auteur ; Henri Engström, Auteur ; Kalev Rattiste, Auteur ; Jürgen Reich, Auteur ; Sergey A. Kouzov, AuteurArticle
Katherine R. S. Snell, Auteur ; Morten Frederiksen, Auteur ; Thomas Bregnballe, AuteurDifferential migration strategies in the same population provide an opportunity to investigate the development and constraints of the migratory programme. We used data from birds ringed from the large Danish breeding population of Great Cormoran[...]Article
Alejandro Corregidor-Castro, Auteur ; Thomas E. Hohn, Auteur ; Thomas Bregnballe, AuteurThe use of Unmanned Aerial Vehicles (UAVs) to monitor large colonies of seabirds avoids challenges associated with conventional methods, but manual image processing is expensive. Development of semi-automated analytical methods rely on high imag[...]Article
Kevin K. Clausen, Auteur ; Thomas E. Holm, Auteur ; Claus L. Pedersen, Auteur ; Erik M. Jacobsen, Auteur ; Thomas Bregnballe, AuteurCoastal waters of northwest Europe have recently been subject to growing recreational human activity, which may invoke a parallel upsurge in the associated disturbance-related impacts on coastal habitats and wildlife. In this study, we investiga[...]Article
Anthony D. Fox, Auteur ; Jón Einar Jónsson, Auteur ; Tomas Aarvak, Auteur ; Thomas Bregnballe, Auteur ; Thomas Kjær Christensen, Auteur ; Kevin Kuhlmann Clausen, Auteur ; Preben Clausen, Auteur ; Lars Dalby, Auteur ; Thomas Eske Holm, Auteur ; Diego Pavon-Jordan, Auteur ; Karsten Laursen, Auteur ; Aleksi Lehikoinen, Auteur ; Svein-Hakon Lorentsen, Auteur ; Anders Pape Møller, Auteur ; Mikael Nordstrom, Auteur ; Markus Ost, Auteur ; Par Soderquist, Auteur ; Ole Roland Therkildsen, AuteurWe review the current and future threats to duck populations that breed, stage, moult and/or winter in the Nordic countries. Migratory duck species are sensitive indicators of their changing environment, and their societal value confirms the nee[...]Article
Thomas Bregnballe, Auteur ; Kim Aaen, Auteur ; Anthony D. Fox, AuteurDans Wildfowl (2 2009)To aid planning of public access routes and the zoning of recreational activity in a Danish restored wetland, variation in the reactions of staging waterbirds to human activity were explored, using escape distances (measured as the distance at w[...]Article
Thomas Bregnballe, Auteur ; Charlotte Speich, Auteur ; Anders Horsten, Auteur ; Anthony D. Fox, AuteurDans Wildfowl (2 2009)Controlled disturbance experiments were used to study distributional and behavioural responses of spring staging dabbling ducks to pedestrians in two parts of a restored wetland (Skjern River delta, Denmark), to inform management of human access[...]Article
Thomas Bregnballe, Auteur ; Uffe D. Andersen, Auteur ; Preben Clausen, Auteur ; Per A. Kjaer, Auteur ; Anthony D. Fox, AuteurDans Wildfowl (2 2009)Optimal design and management of wetland reserves requires knowledge about how individual waterbirds exploit such sites and how different factors influence patterns of habitat Use. To understand more about how Teal Anas crecca use shallow Danish[...]Article
Thomas Bregnballe, Auteur ; Ole Amstrup, Auteur ; Mogens Bak, AuteurDans Wildfowl (2 2009)A 2,200 ha wetland in the Danish Skjern River valley was restored between 1999-2002, partly to re-establish a rich community of migratory waterbirds, in a project which aimed to restore the nutrient retention capacity of the area and to improve [...]Article
Thomas Bregnballe, Auteur ; Ole Thorup, Auteur ; Lars Bo Jacobsen, Auteur ; Jorgen Peter Kjeldsen, Auteur ; Mogens Hansen, AuteurArticle
Viviane Henaux, Auteur ; Thomas Bregnballe, Auteur ; Jean-Dominique Lebreton, AuteurWhile the factors influencing reproduction and survival in colonial populations are relatively well studied, factors involved in dispersal and settlement decisions are not well understood. The present study investigated exchanges of great cormor[...]Article
Karsten Laursen, Auteur ; Thomas Bregnballe, Auteur ; Ole Roland Therkildsen, Auteur ; Thomas Eske Holm, Auteur ; Rasmus Due Nielsen, AuteurThousands of waterbirds breed, stage, moult and winter in Danish waters in concentrations that require the authorities to protect them according to the EU Birds Directive. In addition to waterbirds, the more than 7000 km of coastline around Denm[...]Article
Thomas Bregnballe, Auteur ; Morten Frederiksen, Auteur ; Jens Gregersen, AuteurDans Ardea (94(3) 2006)Great Cormorants Phalacrocorax carbo sinensis breeding in the same colony often vary markedly in where they winter and in their date of arrival. The main aim of this study was to explore whether date of arrival, fledgling production and lifetime[...]Article
Article
Ole R. Therkildsen, Auteur ; Thomas Bregnballe, AuteurThe relationship between the inundation of a salt marsh in southeast Denmark not subject to lunar tides and the availability and predation of seeds of the annuals Salicornia spp. and Suaeda maritima by autumn staging dabbling ducks was studied b[...]Article
Rachel S. McCrea, Auteur ; Byron J. T. Morgan, Auteur ; Thomas Bregnballe, AuteurThe work of this paper is motivated by a study of Great Cormorants, Phalacrocorax carbo sinensis, in Denmark. The dataset is complex, involving birds in different states living in and moving between neighbouring colonies. As a consequence, the s[...]Article
Ole Thorup, Auteur ; Thomas Bregnballe, AuteurAlthough numbers of breeding Pied Avocets in Denmark increased between the 1920s and the early 1990s, they are now declining significantly more rapidly than in almost all other NW European countries. There have been few studies of the causes of [...]Article
Thomas Bregnballe, Auteur ; Hans Erik Jorgensen, AuteurThe Common Tern is an Annex I species on the EU Birds Directive. It is designated as a breeding species for 30 of the Danish SPAs. Knowledge about breeding occurrence of terns has been collected mainly in projects and surveys initiated and carri[...]Article
Thomas Bregnballe, Auteur ; Peter Lyngs, AuteurBased on more than 6000 counts, this paper describes the development of the population of breeding Herring Gulls in Denmark since the 1920s. As part of this review, all published as well as a large number of unpublished data concerning breeding [...]Article
Thomas Bregnballe, Auteur ; Ole Amstrup, Auteur ; Thomas E. Holm, Auteur ; Preben Clausen, Auteur ; Anthony D. Fox, AuteurAfter circa 35 years of drainage and intensive arable tillage, the lower Skjern River, Denmark was re-engineered to its original meanders and flooding regime, creating 22 km(2) of lakes, shallow wetlands and seasonally flooded grazed wet grassla[...]