Distributional Limits of Bats in Alaska

Parker, Doreen I.; Lawhead, Brian E.; Cook, Joseph A.

doi:10.14430/arctic1107

Cited by 48 publications

(35 citation statements)

References 49 publications

(50 reference statements)

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“…At the study locations in the southern Yukon and interior of Alaska, M. lucifugus was the only bat species captured (Parker et al 1997;Talerico 2008;Shively 2016). However, in the southern Northwest Territories (60°N) in Canada, where temperatures are also low during the early and late periods of the bats' active season , M. lucifugus lives in sympatry with another small insectivorous species, the northern long-eared bat (Myotis septentrionalis Trouessart, 1897).…”

Section: )mentioning

confidence: 99%

Temperature-dependent consumption of spiders by little brown bats (Myotis lucifugus), but not northern long-eared bats (Myotis septentrionalis), in northern Canada

Kaupas

Barclay

2018

Can. J. Zool.

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Intraspecific variation in diet has been observed in many species, including the geographically widespread little brown bat (Myotis lucifugus (Le Conte, 1831)). Spider consumption by M. lucifugus is more common in northern regions of their distribution, possibly due to reduced availability of aerial prey during low temperatures. However, in previously studied northern regions, M. lucifugus was the only bat species captured. The purpose of our study was to examine whether there is overlap in the diet and morphology of M. lucifugus and the northern long-eared bat (Myotis septentrionalis (Trouessart, 1897)), a species that commonly gleans prey, in the Northwest Territories, Canada. There were significant differences in the dietary composition and wing morphology of the two species, suggesting partitioning of resources. Both species consumed spiders, although unlike M. septentrionalis, the probability of M. lucifugus consuming spiders was significantly greater at low temperatures. Myotis lucifugus demonstrated a different pattern of spider consumption than in other northern regions where it consumes spiders throughout the summer, suggesting the possibility of resource competition where M. lucifugus overlaps with M. septentrionalis. Further research is needed to determine whether arthropods are seasonally limiting at high latitudes and to examine how these species capture nonaerial prey, including spiders.

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Section: )mentioning

confidence: 99%

Temperature-dependent consumption of spiders by little brown bats (Myotis lucifugus), but not northern long-eared bats (Myotis septentrionalis), in northern Canada

Kaupas

Barclay

2018

Can. J. Zool.

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“…In particular we wanted to test physical and ecological factors important to the northern limit of the species distribution, including temperature and landscape features that would affect light conditions. Latitude is believed to be a surrogate for temperature and day-length (Kaufman and Willig 1998;Ulrich et al 2007, see also Parker et al 1997), thus we expected both these factors to be important.…”

Section: Introductionmentioning

confidence: 99%

Topography is a limiting distributional factor in the soprano pipistrelle at its latitudinal extreme

2011

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a b s t r a c tClimatic conditions such as temperature and seasonality are becoming increasingly harsh towards the latitudinal extreme of the distribution and may limit the occurrence of mammals through decreased food availability or accessibility. For nocturnal bats increasing day length in summer may also limit the range latitudinally.We investigated the effect of long term mean temperature, precipitation, altitude, water affinity, terrestrial habitat, and topography on the summer distribution of the soprano pipistrelle Pipistrellus pygmaeus at its northern limit in western Norway (62 • N, 06 E) in a fiord landscape. We recorded presence/absence of the species in 138 sites by means of ultrasound detectors (and an acoustic lure).A binary logistic regression analysis showed that temperature is significant in predicting occurrence of soprano pipistrelles, with no animals in areas of less than 13 • C (long term mean July temperature). Further, the model suggests that the species prefers areas where steep mountains to the north shade out the sun before sunset and after sunrise. Here soprano pipistrelles can start hunting up to 2 h earlier than in a flat landscape, thus spending more time on energy consumption.

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“…Degraded plant fragments and wood occur along the contact between mafic lapilli and eolian silt. This and the presence of bat remains in FSLF infer that the area was within the northern limit of forest (Parker et al, 1997) at the time of deposition of the eolian silt.…”

Section: Refinement Of the Age Of Fort Selkirk Glaciationmentioning

confidence: 83%

Pliocene and Pleistocene volcanic interaction with Cordilleran ice sheets, damming of the Yukon River and vertebrate Palaeontology, Fort Selkirk Volcanic Group, west-central Yukon, Canada

Jackson¹,

Nelson²,

Huscroft³

et al. 2012

Quaternary International

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Distributional Limits of Bats in Alaska

Cited by 48 publications

References 49 publications

Temperature-dependent consumption of spiders by little brown bats (Myotis lucifugus), but not northern long-eared bats (Myotis septentrionalis), in northern Canada

Temperature-dependent consumption of spiders by little brown bats (Myotis lucifugus), but not northern long-eared bats (Myotis septentrionalis), in northern Canada

Topography is a limiting distributional factor in the soprano pipistrelle at its latitudinal extreme

Pliocene and Pleistocene volcanic interaction with Cordilleran ice sheets, damming of the Yukon River and vertebrate Palaeontology, Fort Selkirk Volcanic Group, west-central Yukon, Canada

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