A note on polyvinyl chloride (PVC) pipe traps for sampling vegetation-dwelling frogs in South Africa

Trimble, Morgan Jayne; Aarde, Rudi J. van

doi:10.1111/aje.12120

Cited by 3 publications

(3 citation statements)

References 14 publications

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“…The fence guided amphibians and reptiles into pitfalls and funnel traps. Four polyvinyl chloride pipe traps (see Trimble & van Aarde, ) and four wooden cover boards were installed 10 m beyond the northern‐pointing fence arm and checked on days 2, 4 and 5. An active search was performed and audio recordings were made in the vicinity of each array, and species found when installing or removing traps were recorded.…”

Section: Methodsmentioning

confidence: 99%

Amphibian and reptile communities and functional groups over a land‐use gradient in a coastal tropical forest landscape of high richness and endemicity

Trimble

Aarde

2014

Animal Conservation

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Information on the response of herpetofauna to different land uses is limited though important for land-use planning to support conservation in human-modified landscapes. Though transformation is dogmatically associated with extinction, species respond idiosyncratically to land-use change, and persistence of species in habitat fragments may depend on careful management of the human-modified matrix. We sampled herpetofauna over a vegetation-type gradient representative of regional land uses (old-growth forest, degraded forest, acacia woodland (i.e. new-growth forest), eucalyptus plantation, and sugar cane cultivation) in the forest belt skirting the southeastern coast of Africa, part of a biodiversity hotspot hosting many endemic herpetofaunal species in a highly transformed landscape. We categorized species into 1 Author Contributions: MJT and RJvA designed the study. MJT carried out the project, analyzed the data, and wrote the manuscript with input from RJvA, who supervised the study.2 trait-derived functional groups, and assessed abundance and richness of groups and compared community metrics along the gradient. We further assessed the capacity of environmental variables to predict richness and abundance. Overall, old-growth forest harbored the highest richness and abundance, and frogs and reptiles responded similarly to the gradient. Richness was low in cultivation and, surprisingly, in degraded forest but substantial in acacia woodland and plantation. Composition differed between natural vegetation types (forest, degraded forest) and anthropogenic types (plantation, cultivation), while acacia woodland grouped with the latter for frogs and the former for reptiles. Functional group richness eroded along the gradient, a pattern driven by sensitivity of fossorial/ground-dependent frogs (F2) and reptiles (R2) and vegetationdwelling frogs (F4) to habitat change. Variables describing temperature, cover, and soil were good predictors of frog abundance, particularly of functional groups, but not for reptiles.Conserving forest and preventing degradation is important for forest herpetofaunal conservation, restoration and plantations have intermediate value, and cultivation is least beneficial. Our study demonstrates the utility of function-related assessments, beyond traditional metrics alone, for understanding community responses to transformation. Particularly, fossorial/ground-dependent frogs and reptiles and vegetation-dwelling frogs should be closely monitored.

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Section: Methodsmentioning

confidence: 99%

Amphibian and reptile communities and functional groups over a land‐use gradient in a coastal tropical forest landscape of high richness and endemicity

Trimble

Aarde

2014

Animal Conservation

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“…These include a variety of active and passive sampling techniques such as transects, pitfall traps, cover boards, funnel traps, refugia tubes, and glue traps. These methods are used to reduce researcher bias and extend the length of the sampling season [7]. However, each method is limited in terms of which type of herpetofauna is being sampled (e.g., pitfall traps only work for ground-dwelling taxa).…”

Section: Introductionmentioning

confidence: 99%

Passive Acoustic Sampling Enhances Traditional Herpetofauna Sampling Techniques in Urban Environments

Barnes,

Quinn

2023

Sensors

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Data are needed to assess the relationships between urbanization and biodiversity to establish conservation priorities. However, many of these relationships are difficult to fully assess using traditional research methods. To address this gap and evaluate new acoustic sensors and associated data, we conducted a multimethod analysis of biodiversity in a rapidly urbanizing county: Greenville, South Carolina, USA. We conducted audio recordings at 25 points along a development gradient. At the same locations, we used refugia tubes, visual assessments, and an online database. Analysis focused on species identification of both audio and visual data at each point along the trail to determine relationships between both herpetofauna and acoustic indices (as proxies for biodiversity) and environmental gradient of land use and land cover. Our analysis suggests the use of a multitude of different sampling methods to be conducive to the completion of a more comprehensive occupancy measure. Moving forward, this research protocol can potentially be useful in the establishment of more effective wildlife occupancy indices using acoustic sensors to move toward future conservation policies and efforts concerning urbanization, forest fragmentation, and biodiversity in natural, particularly forested, ecosystems.

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“…Nevertheless, both bamboo internodes and bromeliads likely are important microhabitats and refugia for this species. Other studies utilizing PVC traps have reported amphibians to use the traps as refugia, rather than as water-containing breeding sites (Glorioso andWaddle 2014, Trimble andAarde 2014).…”

mentioning

confidence: 99%

Bamboo traps as refugia for Pristimantis olivaceus (Anura: Craugastoridae) and as breeding site for Osteocephalus castaneicola (Anura: Hylidae)

et al. 2015

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A note on polyvinyl chloride (PVC) pipe traps for sampling vegetation-dwelling frogs in South Africa

Cited by 3 publications

References 14 publications

Amphibian and reptile communities and functional groups over a land‐use gradient in a coastal tropical forest landscape of high richness and endemicity

Amphibian and reptile communities and functional groups over a land‐use gradient in a coastal tropical forest landscape of high richness and endemicity

Passive Acoustic Sampling Enhances Traditional Herpetofauna Sampling Techniques in Urban Environments

Bamboo traps as refugia for Pristimantis olivaceus (Anura: Craugastoridae) and as breeding site for Osteocephalus castaneicola (Anura: Hylidae)

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