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ZENODO
Dataset . 2025
License: CC BY
Data sources: ZENODO
ZENODO
Dataset . 2025
License: CC BY
Data sources: Datacite
ZENODO
Dataset . 2025
License: CC BY
Data sources: Datacite
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Data from: Limited role of aquatic habitat complexity in mitigating the ecological impact of invasive bullfrogs on native amphibians

Authors: Tibo, Jonathan; Brys, Rein; Jacquemyn, Hans; Van Driessche, Charlotte; Everts, Teun;

Data from: Limited role of aquatic habitat complexity in mitigating the ecological impact of invasive bullfrogs on native amphibians

Abstract

Spatial overlap in habitat use and structural habitat complexity can shape the ecological impact of biological invasions. Environmental conditions that mitigate these impacts can be exploited in nature-based conservation strategies aimed at damage reduction when complete eradication is no longer feasible. In this study, we investigated how site-level habitat characteristics shape the ecological impact of non-native American bullfrogs (Lithobates catesbeianus) on native am- phibian communities. We surveyed 134 standing water bodies in Belgium using environmental DNA (eDNA) quantitative barcoding and metabarcoding to assess bullfrog density and native amphibian community structure, respectively, and recorded 25 habitat characteristics. We in- vestigated (i) environmental niche overlap between native amphibians and bullfrogs, (ii) species-habitat associations, and (iii) the interactive effect of aquatic habitat complexity, based on aquatic macrophyte coverage, and bullfrog density on native amphibians. Our findings show that the environmental niche of native amphibians was substantially smaller than and nested within that of bullfrogs, potentially limiting opportunities for impact mitigation through niche differentiation. Native species with smaller niches and stronger habitat associations were gener- ally more affected by bullfrogs than less habitat-specific species. Although structurally complex aquatic habitats generally benefited most native amphibians, these positive effects were often outweighed by the negative impacts of increasing bullfrog densities. The ability of aquatic habi- tat complexity provided by aquatic macrophytes to reduce the impact of non-native bullfrogs de- pended on the native amphibian species involved and the specific conservation objectives being pursued—whether oriented toward maintaining amphibian species richness or ensuring the per- sistence of focal species. Increasing aquatic habitat complexity alone is thus insufficient as a stand-alone management strategy to protect native amphibians from non-native bullfrogs.

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    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average