Paul Cryan, PhD (Former Employee)
Science and Products
Filter Total Items: 88
Applying radar technology to migratory bird conservation and management: Strengthening and expanding a collaborative Applying radar technology to migratory bird conservation and management: Strengthening and expanding a collaborative
Executive Summary Understanding the factors affecting migratory bird and bat populations during all three phases of their life cycle—breeding, nonbreeding, and migration—is critical to species conservation planning. This includes the need for information about these species’ responses to natural challenges, as well as information about the effects of human activities and structures...
Authors
Janet M. Ruth, Albert Manville, Ron Larkin, Wylie C. Barrow, Lori Johnson-Randall, Deanna K. Dawson, Robert H. Diehl, Yufang Wang, Richard S. Sojda, Rafal Angryk, Robert W. Klaver, Reggie Mead, John Paxton, Patricia J. Heglund, Eileen Kirsch, Manuel J. Suarez, Larry Robinson, Sidney A. Gauthreaux, Carroll G. Belser, Steven J. Franke, Bruno Bruderer, Jeffrey J. Buler, Frank R. Moore, David S. Mizrahi, Robert Fogg, T. Adam Kelly, Paul M. Cryan, Tim Crum, Terry J. Schuur, Dave Krueper, Robb Diehl, Tom Will
Migration of bats past a remote island offers clues toward the problem of bat fatalities at wind turbines Migration of bats past a remote island offers clues toward the problem of bat fatalities at wind turbines
Wind energy is rapidly becoming a viable source of alternative energy, but wind turbines are killing bats in many areas of North America. Most of the bats killed by turbines thus far have been migratory species that roost in trees throughout the year, and the highest fatality events appear to coincide with autumn migration. Hoary bats (Lasiurus cinereus) are highly migratory and one of...
Authors
P.M. Cryan, A.C. Brown
Migration and the use of Autumn, Winter, and Spring roosts by tree bats Migration and the use of Autumn, Winter, and Spring roosts by tree bats
No abstract available.
Authors
Paul M. Cryan, J. P. Veilleux
Natural history collections: A scientific treasure trove Natural history collections: A scientific treasure trove
Natural history collections play an indispensable and often overlooked role in the conservation and management of our Nation’s flora and fauna. Scientific specimens housed in museum collections not only open an important window into the current and past diversity of life on Earth, but also play a vital role in fueling cutting-edge scientific research in many disciplines. The U.S...
Authors
Water Resources Division U.S. Geological Survey
Comprehensive genetic analyses reveal evolutionary distinction of a mouse (Zapus hudsonius preblei) proposed for delisting from the US Endangered Species Act Comprehensive genetic analyses reveal evolutionary distinction of a mouse (Zapus hudsonius preblei) proposed for delisting from the US Endangered Species Act
Zapus hudsonius preblei, listed as threatened under the US Endangered Species Act (ESA), is one of 12 recognized subspecies of meadow jumping mice found in North America. Recent morphometric and phylogenetic comparisons among Z. h. preblei and neighbouring conspecifics questioned the taxonomic status of selected subspecies, resulting in a proposal to delist the Z. h. preblei from the ESA...
Authors
Tim L. King, John F. Switzer, Cheryl L. Morrison, Michael S. Eackles, Colleen Young, Barbara A. Lubinski, Paul M. Cryan
Stable hydrogen isotope analysis of bat hair as evidence for seasonal molt and long-distance migration Stable hydrogen isotope analysis of bat hair as evidence for seasonal molt and long-distance migration
Although hoary bats (Lasiurus cinereus) are presumed to be migratory and capable of long-distance dispersal, traditional marking techniques have failed to provide direct evidence of migratory movements by individuals. We measured the stable hydrogen isotope ratios of bat hair (δDh) and determined how these values relate to stable hydrogen isotope ratios of precipitation (δDp). Our...
Authors
P.M. Cryan, M.A. Bogan, R. O. Rye, G. P. Landis, C.L. Kester
Chemistry & migration mysteries: Fur holds clues to previous journeys Chemistry & migration mysteries: Fur holds clues to previous journeys
The bat was not only pregnant but downright angry as I snipped a bit of fur from her back. Within a few seconds, however, she flapped her powerful wings, took off from my hand and disappeared into the night, rejoining thousands of female hoary bats (Lasiurus cinereus) on their migration through the mountains of New Mexico. Every spring, hundreds of these expectant mothers pass through...
Authors
Paul M. Cryan
Seasonal distribution of migratory tree bats (Lasiurus and Lasionycteris) in North America Seasonal distribution of migratory tree bats (Lasiurus and Lasionycteris) in North America
Despite evidence of migration in North American tree bats (genera Lasiurus and Lasionycteris), details regarding seasonal movements in these widely distributed species are few. This study attempted to clarify patterns of seasonal distribution by mapping museum occurrence records by month. Monthly changes in the distribution of records indicate seasonal movements of tree bats. Northward...
Authors
Paul M. Cryan
Western crevice and cavity-roosting bats Western crevice and cavity-roosting bats
Among the 45 species of bats that occur in the United States (U.S.), 34 species regularly occur in western regions of the country. Many of these “western” species choose roost sites in crevices or cavities. Herein we provide an introduction to the biology of bats that roost in cavities and crevices and assess the challenges and opportunities associated with monitoring their populations...
Authors
Michael A. Bogan, Paul M. Cryan, Ernest W. Valdez, Laura E. Ellison, Thomas J. O’Shea
Recurrence of Mexican long-tongued bats (Choeronycteris mexicana) at historical sites in Arizona and New Mexico Recurrence of Mexican long-tongued bats (Choeronycteris mexicana) at historical sites in Arizona and New Mexico
The Mexican long-tongued bat (Choeronycteris mexicana) is a nectar-eating species that seasonally inhabits the southwestern United States. Since 1906, fewer than 1500 individuals of C. mexicana have been documented throughout the range of the species. We conducted a field survey in Arizona and New Mexico during summer 1999 to check historically occupied areas for recurrence of C...
Authors
P.M. Cryan, M.A. Bogan
Western crevice and cavity-roosting bats Western crevice and cavity-roosting bats
Among the 45 species of bats that occur in the United States (U.S.), 34 species regularly occur in western regions of the country. Many of these “western” species choose roost sites in crevices or cavities. Herein we provide an introduction to the biology of bats that roost in cavities and crevices and assess the challenges and opportunities associated with monitoring their populations...
Authors
Michael A. Bogan, Paul M. Cryan, Ernest W. Valdez, Laura E. Ellison, Thomas J. O’Shea
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
Applying radar technology to migratory bird conservation and management: Strengthening and expanding a collaborative Applying radar technology to migratory bird conservation and management: Strengthening and expanding a collaborative
Executive Summary Understanding the factors affecting migratory bird and bat populations during all three phases of their life cycle—breeding, nonbreeding, and migration—is critical to species conservation planning. This includes the need for information about these species’ responses to natural challenges, as well as information about the effects of human activities and structures...
Authors
Janet M. Ruth, Albert Manville, Ron Larkin, Wylie C. Barrow, Lori Johnson-Randall, Deanna K. Dawson, Robert H. Diehl, Yufang Wang, Richard S. Sojda, Rafal Angryk, Robert W. Klaver, Reggie Mead, John Paxton, Patricia J. Heglund, Eileen Kirsch, Manuel J. Suarez, Larry Robinson, Sidney A. Gauthreaux, Carroll G. Belser, Steven J. Franke, Bruno Bruderer, Jeffrey J. Buler, Frank R. Moore, David S. Mizrahi, Robert Fogg, T. Adam Kelly, Paul M. Cryan, Tim Crum, Terry J. Schuur, Dave Krueper, Robb Diehl, Tom Will
Migration of bats past a remote island offers clues toward the problem of bat fatalities at wind turbines Migration of bats past a remote island offers clues toward the problem of bat fatalities at wind turbines
Wind energy is rapidly becoming a viable source of alternative energy, but wind turbines are killing bats in many areas of North America. Most of the bats killed by turbines thus far have been migratory species that roost in trees throughout the year, and the highest fatality events appear to coincide with autumn migration. Hoary bats (Lasiurus cinereus) are highly migratory and one of...
Authors
P.M. Cryan, A.C. Brown
Migration and the use of Autumn, Winter, and Spring roosts by tree bats Migration and the use of Autumn, Winter, and Spring roosts by tree bats
No abstract available.
Authors
Paul M. Cryan, J. P. Veilleux
Natural history collections: A scientific treasure trove Natural history collections: A scientific treasure trove
Natural history collections play an indispensable and often overlooked role in the conservation and management of our Nation’s flora and fauna. Scientific specimens housed in museum collections not only open an important window into the current and past diversity of life on Earth, but also play a vital role in fueling cutting-edge scientific research in many disciplines. The U.S...
Authors
Water Resources Division U.S. Geological Survey
Comprehensive genetic analyses reveal evolutionary distinction of a mouse (Zapus hudsonius preblei) proposed for delisting from the US Endangered Species Act Comprehensive genetic analyses reveal evolutionary distinction of a mouse (Zapus hudsonius preblei) proposed for delisting from the US Endangered Species Act
Zapus hudsonius preblei, listed as threatened under the US Endangered Species Act (ESA), is one of 12 recognized subspecies of meadow jumping mice found in North America. Recent morphometric and phylogenetic comparisons among Z. h. preblei and neighbouring conspecifics questioned the taxonomic status of selected subspecies, resulting in a proposal to delist the Z. h. preblei from the ESA...
Authors
Tim L. King, John F. Switzer, Cheryl L. Morrison, Michael S. Eackles, Colleen Young, Barbara A. Lubinski, Paul M. Cryan
Stable hydrogen isotope analysis of bat hair as evidence for seasonal molt and long-distance migration Stable hydrogen isotope analysis of bat hair as evidence for seasonal molt and long-distance migration
Although hoary bats (Lasiurus cinereus) are presumed to be migratory and capable of long-distance dispersal, traditional marking techniques have failed to provide direct evidence of migratory movements by individuals. We measured the stable hydrogen isotope ratios of bat hair (δDh) and determined how these values relate to stable hydrogen isotope ratios of precipitation (δDp). Our...
Authors
P.M. Cryan, M.A. Bogan, R. O. Rye, G. P. Landis, C.L. Kester
Chemistry & migration mysteries: Fur holds clues to previous journeys Chemistry & migration mysteries: Fur holds clues to previous journeys
The bat was not only pregnant but downright angry as I snipped a bit of fur from her back. Within a few seconds, however, she flapped her powerful wings, took off from my hand and disappeared into the night, rejoining thousands of female hoary bats (Lasiurus cinereus) on their migration through the mountains of New Mexico. Every spring, hundreds of these expectant mothers pass through...
Authors
Paul M. Cryan
Seasonal distribution of migratory tree bats (Lasiurus and Lasionycteris) in North America Seasonal distribution of migratory tree bats (Lasiurus and Lasionycteris) in North America
Despite evidence of migration in North American tree bats (genera Lasiurus and Lasionycteris), details regarding seasonal movements in these widely distributed species are few. This study attempted to clarify patterns of seasonal distribution by mapping museum occurrence records by month. Monthly changes in the distribution of records indicate seasonal movements of tree bats. Northward...
Authors
Paul M. Cryan
Western crevice and cavity-roosting bats Western crevice and cavity-roosting bats
Among the 45 species of bats that occur in the United States (U.S.), 34 species regularly occur in western regions of the country. Many of these “western” species choose roost sites in crevices or cavities. Herein we provide an introduction to the biology of bats that roost in cavities and crevices and assess the challenges and opportunities associated with monitoring their populations...
Authors
Michael A. Bogan, Paul M. Cryan, Ernest W. Valdez, Laura E. Ellison, Thomas J. O’Shea
Recurrence of Mexican long-tongued bats (Choeronycteris mexicana) at historical sites in Arizona and New Mexico Recurrence of Mexican long-tongued bats (Choeronycteris mexicana) at historical sites in Arizona and New Mexico
The Mexican long-tongued bat (Choeronycteris mexicana) is a nectar-eating species that seasonally inhabits the southwestern United States. Since 1906, fewer than 1500 individuals of C. mexicana have been documented throughout the range of the species. We conducted a field survey in Arizona and New Mexico during summer 1999 to check historically occupied areas for recurrence of C...
Authors
P.M. Cryan, M.A. Bogan
Western crevice and cavity-roosting bats Western crevice and cavity-roosting bats
Among the 45 species of bats that occur in the United States (U.S.), 34 species regularly occur in western regions of the country. Many of these “western” species choose roost sites in crevices or cavities. Herein we provide an introduction to the biology of bats that roost in cavities and crevices and assess the challenges and opportunities associated with monitoring their populations...
Authors
Michael A. Bogan, Paul M. Cryan, Ernest W. Valdez, Laura E. Ellison, Thomas J. O’Shea
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.