Amphibian Conservation in Agricultural Landscapes

Amphibians are among the most threatened vertebrates globally, with habitat loss, pollution and disease driving steep declines. Agricultural landscapes, long viewed as inimical to amphibian persistence, can nonetheless support diverse assemblages when managed sensitively. Rice paddies, irrigation channels and fallow fields may function as surrogate wetlands, providing breeding sites, refugia and dispersal corridors. However, hydrological regimes, pesticide use, field-edge structure and land-use intensification all influence amphibian survival, reproduction and movement. Effective conservation hinges on integrating ecological requirements into farming practices, including timing of flooding, vegetation retention and minimisation of agrochemical inputs. Climate change further complicates this picture by altering hydroperiods and shifting suitable habitats. A holistic approach to amphibian conservation in agricultural regions must reconcile production objectives with biodiversity goals, fostering multifunctional landscapes that sustain both food security and amphibian populations.

Research from Nature Portfolio

Recent studies have modelled the future distribution of a narrowly endemic plethodontid salamander under multiple climate-change scenarios. These analyses predict substantial shifts and contractions of suitable habitat, emphasising the need to revise conservation corridors and to prioritise climatic refugia in high-elevation zones. Investigations into agro-environmental drivers demonstrate that rice-paddy cultivation phases and water regimes dictate the onset and intensity of breeding calls in pond-breeding treefrogs; synchrony between flooding schedules and amphibian phenology emerges as critical for maximising reproductive success. Experimental field manipulations reveal asymmetric competition for calling sites between two sympatric treefrog species in rice paddies, indicating that interspecific interactions determine micro-distribution within fields. These findings highlight the importance of retaining vegetation structure and managing field margins to facilitate habitat partitioning and reduce competitive exclusion.

Amphibian Conservation in Agricultural Landscapes publication trend

The graph below shows the total number of articles in amphibian conservation in agricultural landscapes across all publications each year (not limited to Nature Index journals).

Technical terms

Hydroperiod: The seasonal duration and depth of water inundation in wetland habitats, influencing breeding success and larval development.

Range shift: The movement of a species’ geographic distribution in response to environmental changes such as climate warming.

Phenology: The timing of seasonal biological events, for example breeding, calling or migration, often aligned with environmental cues.

Habitat connectivity: The degree to which landscape features allow movement of individuals between suitable habitat patches.

Interspecific competition: The contest between individuals of different species for shared resources, which can structure community composition.

References

1. Climate change-based models predict range shifts in the distribution of the only Asian plethodontid salamander: Karsenia koreana. Scientific Reports (2019).
2. Relationship between agro-environmental variables and breeding Hylids in rice paddies. Scientific Reports (2018).
3. Asymmetric competition over calling sites in two closely related treefrog species. Scientific Reports (2016).
4. Impact of land reclamation and agricultural water regime on the distribution and conservation status of the endangered Dryophytes suweonensis. PeerJ (2017).
5. Preference for natural borders in rice paddies by two treefrog species. Animal Cells and Systems (2018).
6. Interspecific Variation in Seasonal Migration and Brumation Behavior in Two Closely Related Species of Treefrogs. Frontiers in Ecology and Evolution (2019).