Erratum to: Effects of mute swans on wetlands: a synthesis

Gayet, Guillaume; Guillemain, Matthieu; Rau, Pierre Defos du; Grillas, Patrick

doi:10.1007/s10750-013-1741-0

Cited by 10 publications

(11 citation statements)

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“…Our study shows that bird density is important to take into account to obtain the most accurate prediction of the CNL. Although we show that the CNL of a lake is negatively affected by grazing birds, controlling their abundance (see for instance discussion on management of mute swans (Wood et al, 2013;Gayet et al, 2014) would not bring a sustainable solution: the impact of birds is highest in the domain where the resilience of the clearwater state is already low because of high nutrient loading. While bird management may potentially be part of a set of management measures that can be applied to increase the resilience of the clear-water state, the vulnerability to regime change during eutrophication is primarily a function of the external nutrient loading (Scheffer et al, 1993).…”

Section: Discussionmentioning

confidence: 88%

The impact of bird herbivory on macrophytes and the resilience of the clear-water state in shallow lakes: a model study

et al. 2016

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Shallow lakes have the potential to switch between two alternative stable states: a clear macrophyte-dominated and a turbid phytoplankton-dominated state. Observational and experimental studies show that in some lakes herbivory by birds may severely decrease macrophyte biomass, while in other lakes, the removed biomass by herbivory is compensated by regrowth. These contradictory outcomes might arise because of interplay between top-down control by bird herbivory and bottom-up effects by nutrient loading on macrophytes. Here, we use the ecosystem model PCLake to study top-down and bottom-up control of macrophytes by coots and nutrient loading. Our model predicted that (1) herbivory by birds lowers the critical nutrient loading at which the regime shift occurs; (2) bird impact on macrophyte biomass through herbivory increases with nutrient loading; and (3) improved food quality enhances the impact of birds on macrophytes, thus decreasing the resilience of the clear-water state even further. The fact that bird herbivory can have a large impact on macrophyte biomass and can facilitate a regime shift implies that the presence of waterfowl should be taken into account in the estimation of critical nutrient loadings to be used in water quality management.

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Section: Discussionmentioning

confidence: 88%

The impact of bird herbivory on macrophytes and the resilience of the clear-water state in shallow lakes: a model study

et al. 2016

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“…Many fish species are predators to macroinvertebrates, while those species introduced to serve anthropogenic purposes (e.g., mosquitofish) can cause substantial injuries to large numbers of larval amphibians in a wetland (Shulse & Semlitsch, 2013). Other introduced species like crayfish or mute swans are likely to impact either native species (e.g., amphibians) and habitat structure (e.g., macrophyte beds; Gayet et al, 2013), but the extent of adverse impacts generated by these species appears to be density-dependent.…”

Section: Highlightsmentioning

confidence: 99%

The ecological role of ponds in a changing world

Céréghino

Boix

Cauchie³

et al. 2013

Hydrobiologia

189

131

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The fifth conference of the European Pond Conservation Network (Luxembourg, June 2012) brought together researchers, environmental managers, and other stakeholders with the aim to share stateof-the-art knowledge on the ecology, management, and conservation of ponds in the context of the many challenges facing the wider water environment. Although well-known ecological patterns apply to most ponds in Europe and elsewhere, recent data highlight that part of the environmental variables governing pond biodiversity remain specific to climatic/biogeographic regions and to elevation ranges, suggesting that, in addition to common practice, management plans should include range-specific measures. Beyond the contribution of individual ponds to the aquatic and terrestrial life, connected networks of ponds are vital in the provision of new climate space as a response to global climate change, by allowing the observed northward and/or upward movements of species. In terms of services, ponds offer sustainable solutions to key issues of water management and climate change such as nutrient retention, rainfall interception, or carbon sequestration. While the ecological role of ponds is now wellestablished, authoritative research-based advice remains needed to inform future direction in the conservation of small water bodies and to further bridge the gap between science and practice.

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“…Our results have more general implications when it comes to the presumed impact of large and increasing herbivorous birds such as swans on other waterfowl species (Conover and Kania 1994;Pöysä and Sorjonen 2000;Gayet et al 2014Gayet et al , 2016, and whether these species thus could be considered 'invasive' sensu Valéry et al (2008Valéry et al ( , 2009, i.e. irrespective of whether they are native or not (see also Carey et al 2012;Gayet et al 2014). Specifically, it has been proposed that increasing swan populations in general have negative impact on abundance of other waterfowl species.…”

Section: Discussionmentioning

confidence: 80%

“…Similarly, Gayet et al (2011b) did not find any negative impact of Mute Swan (Cygnus olor) pair presence on the occurrence of other waterbirds on fishponds in eastern France. Gayet et al (2014) also concluded that Mute Swan population increase cannot be considered as a biological invasion in Europe. Nor did find support for the idea that swans in general are more aggressive than other groups of waterbirds.…”

Section: Discussionmentioning

confidence: 99%

Recovering Whooper Swans do not cause a decline in Eurasian Wigeon via their grazing impact on habitat

et al. 2017

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The Whooper Swan (Cygnus cygnus) is a good example of successful conservation, with rapidly growing numbers in Fennoscandia in recent decades. To the contrary, Eurasian Wigeon (Mareca penelope) shows a strong negative trend in breeding numbers, which raises conservation concerns.Previous research suggests a causal link between recent population trajectories of the two species.Both preferentially breed on wetlands with abundant horsetail (Equisetum spp.), a plant providing food for Whooper Swan and crucial feeding microhabitat for Eurasian Wigeon broods. We here test predictions based on the hypothesis that grazing on Equisetum by Whooper Swan reduces breeding habitat or breeding habitat quality for Eurasian Wigeon. We use data from 60 lakes in which

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Erratum to: Effects of mute swans on wetlands: a synthesis

Cited by 10 publications

References 0 publications

The impact of bird herbivory on macrophytes and the resilience of the clear-water state in shallow lakes: a model study

The impact of bird herbivory on macrophytes and the resilience of the clear-water state in shallow lakes: a model study

The ecological role of ponds in a changing world

Recovering Whooper Swans do not cause a decline in Eurasian Wigeon via their grazing impact on habitat

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