Movement Patterns of Adult and Juvenile Rana sylvatica (LeConte) and Ambystoma maculatum (Shaw) in Three Restored Seasonal Pools in Maine

Vasconcelos, Daniel Bruno; Calhoun, Aram J. K.

doi:10.1670/157-03a

Cited by 106 publications

(94 citation statements)

References 16 publications

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“…Mobility in recently transformed amphibians may be related to body size (Vasconcelos and Calhoun 2004). However, migratory success is not related to juvenile size in either A. maculatum or Bufo americanus (Rothermel 2004).…”

Section: Juvenile Emigrationmentioning

confidence: 98%

Terrestrial distribution of pond‐breeding salamanders around an isolated wetland

Scott¹,

Komoroski²,

Croshaw³

et al. 2013

Ecology

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Terrestrial habitats surrounding isolated wetlands are a critical resource for many pond-breeding amphibian species, yet few studies have examined the terrestrial distribution of post-metamorphic juveniles and adults. We used an encircling drift fence at a breeding pond in conjunction with partial fences at 90, 172, and 332 m from the wetland to estimate the terrestrial distribution of adult marbled salamanders (Ambystoma opacum; four breeding seasons) and mole salamanders (A. talpoideum; two seasons), as well as the dispersion of newly metamorphosed A. opacum (one summer). For newly metamorphosed A. opacum, 79% emigrated wetland, and 8% moved beyond 172 m; movement distance was unrelated to body size. Distribution of adult A. opacum varied among years, with an average of 28% (range 23-31%) occurring beyond 172 m in all years. Averaged across two years, 51% of adult A. talpoideum occurred beyond 172 m. Lognormal models provided a good fit to both the juvenile and adult ambystomatid distributions, and parameters differed between age classes, sexes, species, and years within species. For adult A. opacum a buffer radius of 300 m or 340 m, depending on the year, is estimated to include 95% of adults; for A. talpoideum the estimate is 464 m or 501 m. A reanalysis of distribution data for seven ambystomatid species shows that a previous estimate of a 164-m radius to protect 95% of a population underestimates the needed buffer radius by 185 m. Because our study wetland requires a nearly 500 m wide radius to protect 95% of its ambystomatid adults, preservation of similar communities may require much more surrounding terrestrial habitat than previously thought. KeywordsAmbystoma opacum, Ambystoma talpoideum, dispersal, isolated wetland, juvenile emigration, pondbreeding salamander, terrestrial buffer zone, terrestrial distribution Disciplines Ecology and Evolutionary Biology | Statistics and Probability CommentsThis is an article from Ecology 94 (2013) Abstract. Terrestrial habitats surrounding isolated wetlands are a critical resource for many pond-breeding amphibian species, yet few studies have examined the terrestrial distribution of post-metamorphic juveniles and adults. We used an encircling drift fence at a breeding pond in conjunction with partial fences at 90, 172, and 332 m from the wetland to estimate the terrestrial distribution of adult marbled salamanders (Ambystoma opacum; four breeding seasons) and mole salamanders (A. talpoideum; two seasons), as well as the dispersion of newly metamorphosed A. opacum (one summer). For newly metamorphosed A. opacum, 79% emigrated ,90 m from the wetland, and 8% moved beyond 172 m; movement distance was unrelated to body size. Distribution of adult A. opacum varied among years, with an average of 28% (range 23-31%) occurring beyond 172 m in all years. Averaged across two years, 51% of adult A. talpoideum occurred beyond 172 m. Lognormal models provided a good fit to both the juvenile and adult ambystomatid distributions, and parameters differed between age classes,...

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Section: Juvenile Emigrationmentioning

confidence: 98%

Terrestrial distribution of pond‐breeding salamanders around an isolated wetland

Scott¹,

Komoroski²,

Croshaw³

et al. 2013

Ecology

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“…Disturbance and forest fragmentation also frequently affects movement by amphibians (Chan-McLeod 2003, Vasconcelos andCalhoun 2004). Preference for closed canopy forests could conceivably increase emigration away from burned areas into neighboring unburned forest.…”

Section: Introductionmentioning

confidence: 99%

Responses of Pond-Breeding Amphibians to Wildfire: Short-Term Patterns in Occupancy and Colonization

Hossack¹,

Corn

2007

Ecological Applications

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Abstract. Wildland fires are expected to become more frequent and severe in many ecosystems, potentially posing a threat to many sensitive species. We evaluated the effects of a large, stand-replacement wildfire on three species of pond-breeding amphibians by estimating changes in occupancy of breeding sites during the three years before and after the fire burned 42 of 83 previously surveyed wetlands. Annual occupancy and colonization for each species was estimated using recently developed models that incorporate detection probabilities to provide unbiased parameter estimates. We did not find negative effects of the fire on the occupancy or colonization rates of the long-toed salamander (Ambystoma macrodactylum). Instead, its occupancy was higher across the study area after the fire, possibly in response to a large snowpack that may have facilitated colonization of unoccupied wetlands. Naı¨ve data (uncorrected for detection probability) for the Columbia spotted frog (Rana luteiventris) initially led to the conclusion of increased occupancy and colonization in wetlands that burned. After accounting for temporal and spatial variation in detection probabilities, however, it was evident that these parameters were relatively stable in both areas before and after the fire. We found a similar discrepancy between naı¨ve and estimated occupancy of A. macrodactylum that resulted from different detection probabilities in burned and control wetlands. The boreal toad (Bufo boreas) was not found breeding in the area prior to the fire but colonized several wetlands the year after they burned. Occupancy by B. boreas then declined during years 2 and 3 following the fire. Our study suggests that the amphibian populations we studied are resistant to wildfire and that B. boreas may experience short-term benefits from wildfire. Our data also illustrate how naı¨ve presence-non-detection data can provide misleading results.

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“…Due to the small size of juvenile amphibians, few studies have looked at juvenile survival, habitat use, and movement. Most studies of juveniles have used drift fence and mark-recapture techniques as opposed to radiotelemetry [3,12,20,27,29,30,39,40], but there have been some successful studies with smaller species of salamanders using powder tracking and PIT tags [41][42][43]. While drift fence methods can provide some information on the extent and direction of juvenile movement, radiotelemetry allows the collection of data on hourly-daily travel, exact foraging areas, burrow use, number of movements, and predation.…”

Section: Introductionmentioning

confidence: 99%

“…Third, we predicted that the distance moved by juveniles would vary by body size, because larger juveniles could have more energy reserves and be less vulnerable to dehydration during movement [52,53]. Fourth, we predicted that since habitat characteristics affect emigration movements [3,12,40], adult and juvenile tiger salamanders would select refugia within the forested pitch pine-oak forest.…”

Section: Introductionmentioning

confidence: 99%

The Importance of Maintaining Upland Forest Habitat Surrounding Salamander Breeding Ponds: Case Study of the Eastern Tiger Salamander in New York, USA

Titus

Madison

Green

2014

Forests

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Most amphibians use both wetland and upland habitats, but the extent of their movement in forested habitats is poorly known. We used radiotelemetry to observe the movements of adult and juvenile eastern tiger salamanders over a 4-year period. Females tended to move farther from the breeding ponds into upland forested habitat than males, while the distance a juvenile moved appeared to be related to body size, with the largest individuals moving as far as the adult females. Individuals chose refugia in native pitch pine-oak forested habitat and avoided open fields, roads, and developed areas. We also observed a difference in potential predation pressures in relation to the distance an individual moved from the edge of the pond. Our results support delineating forested wetland buffer zones on a case-by-case basis to reduce the impacts of concentrated predation, to increase and protect the availability of pitch pine-oak forests near the breeding pond, and to focus primarily on the habitat needs of the adult females and larger juveniles, which in turn will encompass habitat needs of adult males and smaller juveniles.

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Movement Patterns of Adult and Juvenile Rana sylvatica (LeConte) and Ambystoma maculatum (Shaw) in Three Restored Seasonal Pools in Maine

Cited by 106 publications

References 16 publications

Terrestrial distribution of pond‐breeding salamanders around an isolated wetland

Terrestrial distribution of pond‐breeding salamanders around an isolated wetland

Responses of Pond-Breeding Amphibians to Wildfire: Short-Term Patterns in Occupancy and Colonization

The Importance of Maintaining Upland Forest Habitat Surrounding Salamander Breeding Ponds: Case Study of the Eastern Tiger Salamander in New York, USA

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