Long-term changes in numbers and distribution of wintering waterbirds in the Czech Republic, 1966–2008

Musil, Petr; Musilová, Zuzana; Fuchs, Roman; Poláková, Simona

doi:10.1080/00063657.2011.603289

Cited by 30 publications

(44 citation statements)

References 10 publications

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“…Th is complements the results of Visser et al (2009), whereby species breeding in open and dry environments showed the strongest reduction in their migration distance. However, the lack of certainty in our results mean that these trends warrant further investigation, especially into whether wetter winter weather or artifi cial feeding grounds such as agricultural fi elds in inland Europe might be motivating coastal species to shift southward during winter (Rend ó n et al 2008, Musil et al 2011.…”

Section: Ev-7mentioning

confidence: 84%

Differences in shifts of wintering and breeding ranges lead to changing migration distances in European birds

Potvin

Välimäki

Lehikoinen

2016

Journal of Avian Biology

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Studies on the impact of climate change on the distributions of bird species in Europe have largely focused on one season at a time, especially concerning summer breeding ranges. We investigated whether migratory bird species show consistent range shifts over the past 55 yr in both breeding and wintering areas or if these shifts are independent. We then analyzed whether patterns in changing migration distances of Finnish breeding birds could be explained by habitat use, phylogeny or body size. We used long-term datasets from the Finnish ringing centre to analyze the mean wintering latitudes of 29 species of Finnish breeding birds, then used breeding distribution data to make predictions as to whether certain species were migrating shorter or longer distances based on the comparative shifts in the wintering and breeding grounds. Our data reveal species-specifi c diff erences in changing migration distances. We show that for many species, long-term shifts in wintering ranges have not followed the same patterns as those in the breeding range, leading to diff erences in migration distances over time. We conclude that species are not adjusting predictably to climate change in their wintering grounds, leading to changing migration distances in some, but not all, species breeding in Finland. Th is research fi lls an important gap in the current climate change biology literature, focusing on individuals ' entire life histories and revealing new complexities in range shift patterns.In recent years, climate change models have predicted that species ranges will shift towards the poles and mountaintops, and in many species these range shifts have already been documented (Parmesan 2006, Chen et al. 2011, Brommer et al. 2012). To date, most studies investigating range shift patterns focus on seasonal ranges of species, often concentrating on breeding populations (Th omas and Lennon 1999, Hitch and Leberg 2007, Devictor et al. 2008, Zuckerberg et al. 2009, Brommer et al. 2012, although a few have focused on wintering locations (Barbet-Massin et al. 2009, Chen et al. 2011. While important, these studies provide a limited view of the overall impact of climate change on species ranges, and comparisons across species show little to no consistency in how anthropogenic climate change has aff ected range shifts. Th is makes it particularly diffi cult to generalize and therefore to understand the mechanisms behind latitudinal range shifts as a response to climate change (Elmberg et al. 2014). In order to more fully assess responses of species to a changing climate, and to make better predictions regarding future persistence, it is important to gather information about how the entire annual cycle of an individual has changed over time . To do this for migratory species, we need long-term information about how both winter and summer ranges have changed over the past century.In contrast to breeding ranges, wintering areas of migratory species are often more poorly known and can be thus very diffi cult to study. Recent attempts in both Nor...

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Section: Ev-7mentioning

confidence: 84%

Differences in shifts of wintering and breeding ranges lead to changing migration distances in European birds

Potvin

Välimäki

Lehikoinen

2016

Journal of Avian Biology

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“…There are probably some differences in the two species' foraging strategies for example with respect to preferred depth of water for hunting, preference for stagnant or running water, but these differences are probably only detectable during breeding season (when cormorants usually hunt on larger, deeper, stagnant waters, including coastal waters, whilst goosanders often forage on shallow, running inland waters) (Ross 1977;Sjöberg 1985Sjöberg , 1988Wood and Hand 1985;Marquiss and Carss 1994;Dirksen et al 1995;Van Dobben 1995;Gibbons and Withers 2006;Carss et al 2012). Outside the breeding season, there are probably no differences in foraging habits, as during migration and wintering both species forage on various waters, from the open sea to inland rivers, lakes, and ponds (Gilissen et al 2002;Musil et al 2011). Of course weather and type of water affected the distribution and numbers of both species, but these factors did not explain the local distribution of flocks.…”

Section: Discussionmentioning

confidence: 99%

Do flocks of great cormorants and goosanders avoid spatial overlap in foraging habitat during the non-breeding season?

et al. 2017

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Species distribution, ecology, and behaviour are shaped, amongst other things, by interspecific, antagonistic interactions, and this phenomenon is particularly noticeable among predators. We studied the spatial co-distribution of two top piscivorous bird species foraging on inland waters outside breeding season. We considered the hypothesis that goosanders, Mergus merganser, and great cormorants, Phalacrocorax carbo, avoid foraging in close proximity to each other. Data collected on five river-reservoir systems in the Western Carpathians (Poland and Slovakia) during two periods (2014-2015 and 2015-2016) showed that goosander numbers reduced significantly and their foraging areas changed when large flocks of cormorants arrived and began foraging. We also found that inter-flock distances were greatest between flocks of goosanders and cormorants, suggesting that the former species avoided the waters occupied by the latter. Distribution of flocks of both species was additionally determined by the location of foraging place in river-reservoir system, weather, and presence of other piscivorous birds (e.g. grebes) and raptors (e.g. eagles). Together with the results of research in adjacent Bohemia, this study suggests that competition between cormorants and goosanders may arise when bodies of water suitable for piscivorous foraging are scattered and limited in number, as in the mountainous areas of Central Europe.

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“…The trends found in this study were compared to similar analyses available for a range of other European countries: Bulgaria (Michev and Profirov 2003), Sweden (Nilsson 2008), Ireland , the Netherlands (Hustings et al 2009), France (Fouque et al 2009), the UK (Calbrade et al 2010), Portugal (Catry et al 2011), the Czech Republic (Musil et al 2011), Denmark, Germany and the Netherlands (Wadden Sea; Van Roomen et al 2012), and as found in this study, the number of increasing species was higher than the number of decreasing species in Bulgaria, Sweden, the Netherlands (part), France, the UK and the Czech Republic. In contrast, decreasing species were in the majority in the Irish and Wadden Sea (German/Danish/Dutch) studies.…”

Section: Discussionmentioning

confidence: 99%

“…Several analyses of long-term trends of wintering waterbirds have been carried out in Europe, at a national, regional or site-specific level (e.g. Laursen and Frikke 2006;Crowe et al 2008;Maclean et al 2008;Nilsson 2008;Fouque et al 2009;Musil et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Long-term population trends reveal increasing importance of a Mediterranean wetland complex (Messolonghi lagoons, Greece) for wintering waterbirds

Liordos

Pergantis²,

Perganti³

et al. 2014

Zool. Stud.

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Long-term changes in numbers and distribution of wintering waterbirds in the Czech Republic, 1966–2008

Cited by 30 publications

References 10 publications

Differences in shifts of wintering and breeding ranges lead to changing migration distances in European birds

Differences in shifts of wintering and breeding ranges lead to changing migration distances in European birds

Do flocks of great cormorants and goosanders avoid spatial overlap in foraging habitat during the non-breeding season?

Long-term population trends reveal increasing importance of a Mediterranean wetland complex (Messolonghi lagoons, Greece) for wintering waterbirds

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