Case Histories of GPR for Animal Burrows Mapping and Geometry

Sherrod, Laura; Sauck, William A.; Simpson, Edward L.; Werkema, D. Dale; Swiontek, Jarred

doi:10.2113/jeeg24.1.1

Cited by 12 publications

(2 citation statements)

References 46 publications

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“…For locating nests of subterranean species, perhaps non-invasive studies by ground-penetrating radar (GPR) could be useful. Sherrod et al (2019) record nesting burrows of the ground-nesting, solitary bee, Colletes inaequalis at about 0.5 m depth. We know of no published studies using that technique for bumblebees.…”

Section: Discussionmentioning

confidence: 99%

Thermodynamics, thermal performance and climate change: temperature regimes for bumblebee (Bombus spp.) colonies as examples of superorganisms

Kevan,

Rasmont,

Martinet

2024

Front. Bee Sci.

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Evidence is widespread that many species of Bombus are in population and biogeographical decline in response to adverse effects of global climate warming. The complex interactions of the mechanisms at the root of the declines are poorly understood. Among the numerous factors, we posit that heat stress in the nests could play a key role in the decline of bumblebee species. The similarity of the optimum temperature range in incubating nests is remarkable, about 28–32 °C regardless of species from the cold High Arctic to tropical environments indicates that the optimal temperature for rearing of brood in Bombus spp. is a characteristic common to bumblebees (perhaps a synapomorphy) and with limited evolutionary plasticity. We do note that higher brood rearing temperature for the boreal and Arctic species that have been tested is stressfully high when compared with that for B. terrestris. The Thermal Neutral Zone (TNZ), temperatures over which metabolic expenditure is minimal to maintain uniform nest temperatures, has not been studied in Bombus and may differ between species and biogeographic conditions. That heat stress is more serious than chilling is illustrated by the Thermal Performance Curve Relationship (TPC) (also sometimes considered as a Thermal Tolerance Relationship). The TPC indicates that development and activity increase more slowly as conditions become warmer until reaching a plateau of the range of temperatures over which rates of activity do not change markedly. After that, activity rates decline rapidly, and death ensues. The TPC has not been studied in eusocial bees except Apis dorsata but may differ between species and biogeographic conditions. The importance of the TPC and the TNZ indicates that environmental temperatures in and around bumblebee nests (which have been rarely studied especially in the contexts of nest architecture and substrate thermal characteristics) are factors central to understanding the adverse effects of heat stress and climatic warming on bumblebee populations, health, and biogeographical decline.

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Section: Discussionmentioning

confidence: 99%

Thermodynamics, thermal performance and climate change: temperature regimes for bumblebee (Bombus spp.) colonies as examples of superorganisms

Kevan,

Rasmont,

Martinet

2024

Front. Bee Sci.

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“…The internal structure of burrow systems is distributed underground, so studies on burrow systems based solely on the surface appearance have limitations. Ground-penetrating radar could help gain a more comprehensive understanding of the structural dynamics of burrow systems (Sherrod et al 2019). Second, it is necessary to shorten the monitoring interval.…”

Section: Limitations and Prospectsmentioning

confidence: 99%

How do plateau pikas use burrows during population reestablishment?

Zhang,

Deng,

et al. 2023

Preprint

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The construction of burrow systems is one of the most important challenges for burrowing animals, especially during population reestablishment. To explore their strategy of utilizing burrow resources during this period, we chose plateau pika (Ochotona curzoniae) as the research object. We conducted monthly field positioning of the four components (available burrows(AvB), abandoned burrows (AbB), latrine pits(LP), and sporting pits (SP)) of their burrow systems. By analyzing the utilization dynamics of the components at different base time, we found the remaining burrows before extermination were largely utilized in rebuilding their new burrow systems, and theutilization rate magnitude relationshipsof the four components were AvBs > AbBs > LPs > SPs. Burrow components during population reestablishment generally have higher maintenance rates, higher transformation rates to AvBs, lower disappeared rates and lower new adding rates than in the natural state. During population reestablishment, burrows at the early breeding season are used more stably than at other times.

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