Paul Cryan, PhD (Former Employee)
Science and Products
Filter Total Items: 88
United States bat species of concern: A synthesis United States bat species of concern: A synthesis
In 1994 the federal government designated 24 species or subspecies of bats in the United States (U.S.) and its territories as Category 2 candidates for listing as Endangered or Threatened under the U.S. Endangered Species Act. Category 2 was eliminated in 1996, but taxa previously receiving this designation were informally considered “species of concern”. Various state and federal...
Authors
Thomas J. O’Shea, Paul M. Cryan, Michael A. Bogan
Landscape movements by two species of migratory nectar-feeding bats (Leptonycteris) in a northern area of seasonal sympatry Landscape movements by two species of migratory nectar-feeding bats (Leptonycteris) in a northern area of seasonal sympatry
Animals often migrate to exploit seasonally ephemeral food. Three species of nectar-feeding phyllostomid bats migrate north from Mexico into deserts of the United States each spring and summer to feed on blooms of columnar cactus and century plants (Agave spp.). However, the habitat needs of these important desert pollinators are poorly understood. We followed the nighttime movements of...
Authors
Michael A. Bogan, Paul M. Cryan, Christa D. Weise, Ernest W. Valdez
Do you hear what I see? Vocalization relative to visual detection rates of Hawaiian hoary bats (Lasiurus cinereus semotus) Do you hear what I see? Vocalization relative to visual detection rates of Hawaiian hoary bats (Lasiurus cinereus semotus)
Bats vocalize during flight as part of the sensory modality called echolocation, but very little is known about whether flying bats consistently call. Occasional vocal silence during flight when bats approach prey or conspecifics has been documented for relatively few species and situations. Bats flying alone in clutter-free airspace are not known to forgo vocalization, yet prior...
Authors
P. Marcos Gorresen, Paul M. Cryan, Kristina Montoya-Aiona, Frank Bonaccorso
Long-term video surveillance and automated analyses reveal arousal patterns in groups of hibernating bats Long-term video surveillance and automated analyses reveal arousal patterns in groups of hibernating bats
Understanding natural behaviours is essential to determining how animals deal with new threats (e.g. emerging diseases). However, natural behaviours of animals with cryptic lifestyles, like hibernating bats, are often poorly characterized. White-nose syndrome (WNS) is an unprecedented disease threatening multiple species of hibernating bats, and pathogen-induced changes to host behaviour...
Authors
David T. S. Hayman, Paul M. Cryan, Paul D. Fricker, Nicholas G. Dannemiller
Improving spatio-temporal benefit transfers for pest control by generalist predators in cotton in the southwestern U.S. Improving spatio-temporal benefit transfers for pest control by generalist predators in cotton in the southwestern U.S.
Given rapid changes in agricultural practice, it is critical to understand how alterations in ecological, technological, and economic conditions over time and space impact ecosystem services in agroecosystems. Here, we present a benefit transfer approach to quantify cotton pest-control services provided by a generalist predator, the Mexican free-tailed bat (Tadarida brasiliensis mexicana...
Authors
Ruscena Wiederholt, Kenneth J. Bagstad, Gary F. McCracken, Jay E. Diffendorfer, John B. Loomis, Darius J. Semmens, Amy L. Russell, Chris Sansone, Kelsie LaSharr, Paul M. Cryan, Claudia Reynoso, Rodrigo A. Medellin, Laura Lopez-Hoffman
First direct evidence of long-distance seasonal movements and hibernation in a migratory bat First direct evidence of long-distance seasonal movements and hibernation in a migratory bat
Understanding of migration in small bats has been constrained by limitations of techniques that were labor-intensive, provided coarse levels of resolution, or were limited to population-level inferences. Knowledge of movements and behaviors of individual bats have been unknowable because of limitations in size of tracking devices and methods to attach them for long periods. We used...
Authors
Theodore J. Weller, Kevin T. Castle, Felix Liechti, Cris D. Hein, Michael R. Schirmacher, Paul M. Cryan
Non-USGS Publications**
Cryan, P.M. 1997. Distribution and roosting habits of bats in the southern Black Hills, South Dakota [M.S. Thesis]. Albuquerque, NM: University of New Mexico. 98 p.
Perry, T.W., P.M. Cryan, S.R. Davenport, and M.A. Bogan. 1997. New locality for Euderma maculatum (Chiroptera: vespertilionidae) in New Mexico. Southwestern Naturalist. 42(1): 99-10.
Bogan, M.A., T.J. O’Shea, P.M. Cryan, A.M. Ditto, W.H. Shaedla, and L. Ellison. 1996. Status and trends of bat populations at Los Alamos National Laboratory and Bandelier National Monument, Jemez Mountains, New Mexico. Annual report to Los Alamos National Laboratory and Bandelier National Monument. 1-18 p.
Cryan, P.M. and M.A. Bogan. 1995. Ecology and distribution of bats in the southern Black Hills: Annual report to cooperators. Annual report prepared for Jewel Cave National Monument, National Park Service, Custer, SD. 23 p.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Science and Products
Filter Total Items: 88
United States bat species of concern: A synthesis United States bat species of concern: A synthesis
In 1994 the federal government designated 24 species or subspecies of bats in the United States (U.S.) and its territories as Category 2 candidates for listing as Endangered or Threatened under the U.S. Endangered Species Act. Category 2 was eliminated in 1996, but taxa previously receiving this designation were informally considered “species of concern”. Various state and federal...
Authors
Thomas J. O’Shea, Paul M. Cryan, Michael A. Bogan
Landscape movements by two species of migratory nectar-feeding bats (Leptonycteris) in a northern area of seasonal sympatry Landscape movements by two species of migratory nectar-feeding bats (Leptonycteris) in a northern area of seasonal sympatry
Animals often migrate to exploit seasonally ephemeral food. Three species of nectar-feeding phyllostomid bats migrate north from Mexico into deserts of the United States each spring and summer to feed on blooms of columnar cactus and century plants (Agave spp.). However, the habitat needs of these important desert pollinators are poorly understood. We followed the nighttime movements of...
Authors
Michael A. Bogan, Paul M. Cryan, Christa D. Weise, Ernest W. Valdez
Do you hear what I see? Vocalization relative to visual detection rates of Hawaiian hoary bats (Lasiurus cinereus semotus) Do you hear what I see? Vocalization relative to visual detection rates of Hawaiian hoary bats (Lasiurus cinereus semotus)
Bats vocalize during flight as part of the sensory modality called echolocation, but very little is known about whether flying bats consistently call. Occasional vocal silence during flight when bats approach prey or conspecifics has been documented for relatively few species and situations. Bats flying alone in clutter-free airspace are not known to forgo vocalization, yet prior...
Authors
P. Marcos Gorresen, Paul M. Cryan, Kristina Montoya-Aiona, Frank Bonaccorso
Long-term video surveillance and automated analyses reveal arousal patterns in groups of hibernating bats Long-term video surveillance and automated analyses reveal arousal patterns in groups of hibernating bats
Understanding natural behaviours is essential to determining how animals deal with new threats (e.g. emerging diseases). However, natural behaviours of animals with cryptic lifestyles, like hibernating bats, are often poorly characterized. White-nose syndrome (WNS) is an unprecedented disease threatening multiple species of hibernating bats, and pathogen-induced changes to host behaviour...
Authors
David T. S. Hayman, Paul M. Cryan, Paul D. Fricker, Nicholas G. Dannemiller
Improving spatio-temporal benefit transfers for pest control by generalist predators in cotton in the southwestern U.S. Improving spatio-temporal benefit transfers for pest control by generalist predators in cotton in the southwestern U.S.
Given rapid changes in agricultural practice, it is critical to understand how alterations in ecological, technological, and economic conditions over time and space impact ecosystem services in agroecosystems. Here, we present a benefit transfer approach to quantify cotton pest-control services provided by a generalist predator, the Mexican free-tailed bat (Tadarida brasiliensis mexicana...
Authors
Ruscena Wiederholt, Kenneth J. Bagstad, Gary F. McCracken, Jay E. Diffendorfer, John B. Loomis, Darius J. Semmens, Amy L. Russell, Chris Sansone, Kelsie LaSharr, Paul M. Cryan, Claudia Reynoso, Rodrigo A. Medellin, Laura Lopez-Hoffman
First direct evidence of long-distance seasonal movements and hibernation in a migratory bat First direct evidence of long-distance seasonal movements and hibernation in a migratory bat
Understanding of migration in small bats has been constrained by limitations of techniques that were labor-intensive, provided coarse levels of resolution, or were limited to population-level inferences. Knowledge of movements and behaviors of individual bats have been unknowable because of limitations in size of tracking devices and methods to attach them for long periods. We used...
Authors
Theodore J. Weller, Kevin T. Castle, Felix Liechti, Cris D. Hein, Michael R. Schirmacher, Paul M. Cryan
Non-USGS Publications**
Cryan, P.M. 1997. Distribution and roosting habits of bats in the southern Black Hills, South Dakota [M.S. Thesis]. Albuquerque, NM: University of New Mexico. 98 p.
Perry, T.W., P.M. Cryan, S.R. Davenport, and M.A. Bogan. 1997. New locality for Euderma maculatum (Chiroptera: vespertilionidae) in New Mexico. Southwestern Naturalist. 42(1): 99-10.
Bogan, M.A., T.J. O’Shea, P.M. Cryan, A.M. Ditto, W.H. Shaedla, and L. Ellison. 1996. Status and trends of bat populations at Los Alamos National Laboratory and Bandelier National Monument, Jemez Mountains, New Mexico. Annual report to Los Alamos National Laboratory and Bandelier National Monument. 1-18 p.
Cryan, P.M. and M.A. Bogan. 1995. Ecology and distribution of bats in the southern Black Hills: Annual report to cooperators. Annual report prepared for Jewel Cave National Monument, National Park Service, Custer, SD. 23 p.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.