Clutch size, egg survival and migration distance in the agile frog (Rana dalmatina) in a floodplain

Ponsero, Alain; Joly, Pierre

doi:10.1127/archiv-hydrobiol/142/1998/343

Cited by 24 publications

(14 citation statements)

References 18 publications

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“…Our results suggest that adult populations reach distances farther from water than is usually stated (Seitz et al, 1992;Baker and Halliday, 1999). The much greater distances indicated for R. arvalis -7600 m (Vos et al, 2001) and R. dalmatina -3000 m (Ponsero and Joly, 1998) reflect, according our findings, the ability to colonise new territories rather than the population distribution around a pond. This also applies to the distance of 1760 m mentioned by Holenweg Peter (2001) for R. ridibunda (Pelophylax ridibundus).…”

Section: Speciessupporting

confidence: 69%

Spring migration distances of some Central European amphibian species

Kovář¹,

Brabec

Bocek³

et al. 2009

Amphib Reptilia

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Migration distances of eight species of amphibians were studied at 14 sites in the Czech Republic in the course of the 2007 spring migration season. Drift fences with pit-fall traps were installed at varying distances from the reproduction pond. No substitute breeding ponds were available nearby. 4423 m of drift fence was installed and data from a total of 4823 specimens were collected. The estimate 95th percentile migration distances for the newts Lissotriton vulgaris, Mesotriton alpestris and Triturus cristatus were between 105-866 m, and for the frogs Bombina bombina, Bufo bufo, Rana arvalis and R. temporaria estimates were between 170-2214 m. No adult individuals of R. ridibunda were caught out of water. With two exceptions in B. bufo there were no significant among-site differences in migration distances between L. vulgaris, T. cristatus and B. bufo. There were no significant between-sex differences in migration distances of L. vulgaris, M. alpestris, T. cristatus, B. bufo and R. arvalis. Thanks to a great number of various sites processed simultaneously and by the same methodology, presented data provide information on the overall distribution of migration distances in different habitats. The results could be used for the estimation of the extent of the influence on amphibian populations in cases of transection or other habitat degradation in the vicinity of their reproduction ponds.

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Section: Speciessupporting

confidence: 69%

Spring migration distances of some Central European amphibian species

Kovář¹,

Brabec

Bocek³

et al. 2009

Amphib Reptilia

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“…Females foraging in areas farther from ponds may obtain better food resources and recover fat reserves required for egg development (Lamoureux et al, 2002). The greater habitat use of female amphibians could also be associated to their body size larger than in males, which may allow females to move longer distances with lower energy costs (Pilliod et al, 2002;Ponsero and Joly, 1998). However, in our study the SVL of male and female anurans was not correlated with distance from the pond.…”

Section: Tablecontrasting

confidence: 52%

Integrating life-history traits and amphibian upland habitat use in a Neotropical hotspot

2015

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Keywords:Atlantic forest Brazil Frog Wetland Reproductive strategy Sex ratio a b s t r a c t Effective management of semi-aquatic animals requires detailed information on upland habitat use around aquatic habitats. Quantifying the amount of habitats needed to sustain local animals' populations is a crucial criterion when setting protective buffers to water bodies, especially for amphibians, which depend on these upland habitats for breeding and development. Differences in upland habitat use can emerge among amphibian species with distinct life-history traits, including reproductive-strategy (pondbreeding vs. non-pond breeding anurans), life-stage (adults vs. juveniles), and sex (males vs. females). To date there has been no quantitative study of upland habitat use in the Neotropics, which can provide a baseline for quantifying the amount of upland forested habitats needed to sustain local amphibian populations. We monitored three ponds for over two sampling year using drift fences with pitfall traps to investigate how reproductive-strategy, life-stage, and sex affect anuran upland habitat use in a forest remnant in the Atlantic Forest hotspot. We found no differences in upland habitat use between adult and juvenile anurans. However, we found that although the species richness of pond-breeding and non-pond breeding anurans was similar near wetlands, there was greater abundance of pond-breeding compared to non-pond breeding anurans. We also found a strong difference between the sexes in pond-breeding anurans, with males remaining closer to wetlands than females. Thus, the sex ratio of amphibian populations can be strongly skewed toward males if only small protective terrestrial buffers (50-m) are enforced during land development. Our findings also point to the inadequacy of current Brazilian policies to protect small wetlands and the fauna that depend on them. We recommend that policymakers adjust regulatory criteria to set hierarchical protective buffers around wetlands allowing different levels of landuse intervention.

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“…In perhaps the best-known example, brown-headed cowbirds (Molothrus ater), which parasitize the nests of forest-dwelling songbirds but forage in open pastures, often increase in abundance near forest edges (Lowther 1993). Access to different habitat types may be especially important to animals whose juvenile and adult forms have different habitat requirements (Martin 1956, Ponsero & Joly 1998. However, one must distinguish between cases in which resources in adjacent patches are different (complementary) from cases in which adjacent patches contain the same (supplementary) resources (Dunning et al 1992), because in the latter case no edge response is expected.…”

Section: Empirical Evidence For Underlying Mechanismsmentioning

confidence: 99%

Ecological Responses to Habitat Edges: Mechanisms, Models, and Variability Explained

Ries

Fletcher

Battin

et al. 2004

Annu. Rev. Ecol. Evol. Syst.

1,157

1,052

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Key Words ecological boundary, ecotone, edge effect, effective area model, core area model, habitat fragmentation ■ Abstract Edge effects have been studied for decades because they are a key component to understanding how landscape structure influences habitat quality. However, making sense of the diverse patterns and extensive variability reported in the literature has been difficult because there has been no unifying conceptual framework to guide research. In this review, we identify four fundamental mechanisms that cause edge responses: ecological flows, access to spatially separated resources, resource mapping, and species interactions. We present a conceptual framework that identifies the pathways through which these four mechanisms can influence distributions, ultimately leading to new ecological communities near habitat edges. Next, we examine a predictive model of edge responses and show how it can explain much of the variation reported in the literature. Using this model, we show that, when observed, edge responses are largely predictable and consistent. When edge responses are variable for the same species at the same edge type, observed responses are rarely in opposite directions. We then show how remaining variability may be understood within our conceptual frameworks. Finally, we suggest that, despite all the research in this area, the development of tools to extrapolate edge responses to landscapes has been slow, restricting our ability to use this information for conservation and management.

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Clutch size, egg survival and migration distance in the agile frog (Rana dalmatina) in a floodplain

Cited by 24 publications

References 18 publications

Spring migration distances of some Central European amphibian species

Spring migration distances of some Central European amphibian species

Integrating life-history traits and amphibian upland habitat use in a Neotropical hotspot

Ecological Responses to Habitat Edges: Mechanisms, Models, and Variability Explained

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