Level-dependence of the relationships between amphibian biodiversity and environment in pond systems within an intensive agricultural landscape

Jeliazkov, Aliénor; Chiron, François; Garnier, Josette; Besnard, Aurélien; Silvestre, Marie; Jiguet, Frédéric

doi:10.1007/s10750-013-1503-z

Cited by 24 publications

(32 citation statements)

References 93 publications

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“…Jeliazkov et al (2013) emphasize, however, that species richness significantly increases with pond density from local to regional levels. In landscapes experiencing rapid environmental changes, ponds indeed provide vital stepping stones that are essential for the migration, dispersal, and genetic exchange of wild species, including those species which range over large areas (birds and mammals) but require ponds as part of the mosaic of wetland habitats they exploit.…”

Section: Highlightsmentioning

confidence: 76%

The ecological role of ponds in a changing world

Céréghino

Boix

Cauchie³

et al. 2013

Hydrobiologia

197

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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Section: Highlightsmentioning

confidence: 76%

The ecological role of ponds in a changing world

Céréghino

Boix

Cauchie³

et al. 2013

Hydrobiologia

197

131

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“…(1c) As a corollary, we expect network expansion, and network resistance to have negative effects, by making the potential sources further apart, and by altering the connectivity between these sources, respectively. (2) We already showed the importance of local conditions (i.e. fish presence, water quality, and neighbouring proportion of woodland cover) for these specific species in this study area (Jeliazkov et al., ). We here focus on the relative importance of network and pond‐in‐network characteristics in addition to, and in interaction with local conditions.…”

Section: Introductionmentioning

confidence: 74%

“…We assessed the occurrence of three amphibian species— B. bufo , R. dalmatina , L. vulgaris— at the 160 sites in 2011 and 2012 using a standardised protocol (52 ponds in 2011, 65 in 2012, and 35 in both years). Since there was no substantial year effect in the species‐occurrence data (Jeliazkov et al., ), we merged the data of the two annual campaigns into a single visit dataset for the analyses (Chase & Ryberg, ).…”

Section: Methodsmentioning

confidence: 99%

Cross‐scale effects of structural and functional connectivity in pond networks on amphibian distribution in agricultural landscapes

et al. 2019

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Connectivity in pond ecosystems is essential for amphibian population persistence. To test the role of connectivity, a diversity of scales accounting for the different processes underlying species distribution needs to be considered. Several approaches exist for accounting for the potential connectivity, mainly based on structural versus functional methods. Based on occupancy data, our aim was to assess the relative power of connectivity metrics in explaining amphibian distribution when accounting for cross‐scale effects from pond to network scales, and to identify network features relevant to amphibian conservation in agricultural landscapes in the Seine‐et‐Marne department (east of Paris, France). We propose an original analytical framework that allows examining different spatial scales of influence, with a focus on connectivity. We analyse the distribution of three amphibian species (Bufo bufo, Rana dalmatina, and Lissotriton vulgaris) in relation to various pond conditions (fish presence, water quality, and nearby woodland habitat) as well as connectivity using three connectivity approaches: (1) structural, (2) area‐functional based on potential migration areas, and (3) path‐functional based on the least accumulated cost paths. Values of landscape resistance were assigned according to a biological risk‐based approach that is proposed as an enhanced, transparent expert‐based approach. We further investigated cross‐scale effects in amphibian responses to the environment by assessing the relative importance of pond and network characteristics as well as their interactions. Despite some species‐specific characteristics, the area‐functional approach of connectivity was generally the most effective in explaining species distribution by emphasising the relevance of potential migration areas as conservation units. Although pond conditions usually had a greater influence than network connectivity, we highlighted important cross‐scale and threshold effects in species’ response to local conditions, to pond connectivity, and to the availability of potentially suitable terrestrial habitats in the networks. Our cross‐scale approach accounts for scale‐dependent processes that potentially underlie amphibian distribution such as habitat selection and metapopulation dynamics. Both structural and functional connectivity should be considered as complementary features of pond connectivity when dispersal traits are likely to be less limiting. From a management perspective, our results encourage conservation plans to combine functional network‐centred strategies with the preservation of local conditions. We give guidelines as to the features of such networks to help maintain amphibian populations in agricultural landscapes.

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“…It is important to mention, however, that we found only six amphibian species, one of which (Bufo bufo) is not preyed upon by fish (Smith et al 1999;Kloskowski 2009). Indeed, Jeliazkov et al (2014) found a positive relationship between fish occurrence and B. bufo. This means that future analysis of a larger number of amphibian species could give different results.…”

Section: Discussionmentioning

confidence: 94%

“…We used the presence and not the abundance of fish species to reduce the effort of fish sampling, because it was our hypothesis that the presence of fish species might provide a valuable basis for predicting amphibians in these small ponds inhabited by fish (median pond surface area 530 m 2 ). Many studies on the relationship between amphibians and fish use presence/absence data of fish in different ponds (see for example Ficetola & De Bernardi 2004;Orizaola & Brana 2006;Hartel et al 2007Hartel et al , 2009Jeliazkov et al 2014). Generalized linear models (GLM) assuming a Poisson error distribution with a logarithmic link-function were used to test the effect of one categorical factor "fish" with two levels (ponds with and without fish) on three continuous dependent variables (richness of amphibian species, abundance of urodele amphibians and abundance of anuran amphibians).…”

Section: Methodsmentioning

confidence: 99%

The response of amphibian communities to fish and habitat features in Mediterranean permanent ponds

Landi

Piazzini

Saveri³

2014

Biologia

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Generalized linear models were used to test the effect of fish, using ponds with and without fish and habitat features as covariates, on richness and abundance of amphibian species. Five fish species and six amphibian species were recorded in 60 permanent ponds located in central Italy. The choice of covariates (macrophyte cover and pond surface area) was made after studying the correlations. The richness of amphibian species was not significantly affected by fish presence or macrophyte cover, in line with previous studies, since almost all the fish species were non-predatory. However, abundance of urodeles (newts) was negatively affected by fish and positively affected by macrophyte cover. Although fish may strongly influence the abundance and composition of amphibian communities, the results indicate that the cover of aquatic macrophytes may increase the available habitat for amphibians and therefore their abundance. Anuran species preferred ponds where fish were present, since both groups preferred larger ponds. Concordance between fish and amphibian species composition was not found by the Mantel and Partial Mantel tests. This indicates that the fish assemblages do not predict which amphibian species occur in the pond.

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Level-dependence of the relationships between amphibian biodiversity and environment in pond systems within an intensive agricultural landscape

Cited by 24 publications

References 93 publications

The ecological role of ponds in a changing world

The ecological role of ponds in a changing world

Cross‐scale effects of structural and functional connectivity in pond networks on amphibian distribution in agricultural landscapes

The response of amphibian communities to fish and habitat features in Mediterranean permanent ponds

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