Paul Cryan, PhD (Former Employee)
Science and Products
Filter Total Items: 88
Seasonally-dynamic presence-only species distribution models for a cryptic migratory bat impacted by wind energy development Seasonally-dynamic presence-only species distribution models for a cryptic migratory bat impacted by wind energy development
Understanding seasonal distribution and movement patterns of animals that migrate long distances is an essential part of monitoring and conserving their populations. Compared to migratory birds and other more conspicuous migrants, we know very little about the movement patterns of many migratory bats. Hoary bats (Lasiurus cinereus), a cryptic, wide-ranging, long-distance migrant...
Authors
Mark A. Hayes, Paul M. Cryan, Michael B. Wunder
Not to put too fine a point on it - does increasing precision of geographic referencing improve species distribution models for a wide-ranging migratory bat? Not to put too fine a point on it - does increasing precision of geographic referencing improve species distribution models for a wide-ranging migratory bat?
Bat specimens held in natural history museum collections can provide insights into the distribution of species. However, there are several important sources of spatial error associated with natural history specimens that may influence the analysis and mapping of bat species distributions. We analyzed the importance of geographic referencing and error correction in species distribution...
Authors
Mark A. Hayes, Katharine Ozenberger, Paul M. Cryan, Michael B. Wunder
Using sutures to attach miniature tracking tags to small bats for multimonth movement and behavioral studies Using sutures to attach miniature tracking tags to small bats for multimonth movement and behavioral studies
1. Determining the detailed movements of individual animals often requires them to carry tracking devices, but tracking broad-scale movement of small bats ( 30g) has been limited by transmitter technology and long-term attachment methods. This limitation inhibits our understanding of bat dispersal and migration, particularly in the context of emerging conservation issues like fatalities...
Authors
Kevin T. Castle, Theodore J. Weller, Paul M. Cryan, Cris D. Hein, Michael R. Schirmacher
Behavior of the Hawaiian Hawaiian Hoary Bat (Lasiurus cinereus semotus) at wind turbines and its distribution across the North Ko'olau Mountains, O'ahu Behavior of the Hawaiian Hawaiian Hoary Bat (Lasiurus cinereus semotus) at wind turbines and its distribution across the North Ko'olau Mountains, O'ahu
We studied the landscape distribution of endemic Hawaiian hoary bats (Lasiurus cinereus semotus) on the north Ko‘olau Mountains of O‘ahu, Hawai‘i, from May 2013 to May 2014, while simultaneously studying their behavior at wind turbines within the broader landscape. This research aimed to assess the risk that wind turbines pose to bats on the island and integrated a variety of methods...
Authors
P. M. Gorresen, Paul M. Cryan, Manuela M.P. Huso, Cris D. Hein, Michael Schirmacher, Jessica H. Johnson, Kristina Montoya-Aiona, Kevin W. Brinck, Frank Bonaccorso
Optimizing conservation strategies for Mexican freetailed bats: a population viability and ecosystem services approach Optimizing conservation strategies for Mexican freetailed bats: a population viability and ecosystem services approach
Conservation planning can be challenging due to the need to balance biological concerns about population viability with social concerns about the benefits biodiversity provide to society, often while operating under a limited budget. Methods and tools that help prioritize conservation actions are critical for the management of at-risk species. Here, we use a multi-attribute utility...
Authors
Ruscena Wiederholt, Laura Lopez-Hoffman, Colleen Svancara, Gary McCracken, Wayne E. Thogmartin, James E. Diffendorfer, Brady Mattson, Kenneth J. Bagstad, Paul M. Cryan, Amy Russell, Darius J. Semmens, Rodrigo A. Medellin
Watching the dark: New surveillance cameras are changing bat research Watching the dark: New surveillance cameras are changing bat research
It is, according to an old proverb, “better to light a candle than to curse the darkness.” And those of us trying to discover new insights into the mysterious lives of bats often do a lot of cursing in the darkness. Bats do most things under cover of night, and often in places where humans and most other animals can’t go. This dark inaccessibility is great for bats, but not so great for...
Authors
Paul M. Cryan, P. Marcos Gorresen
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
Seasonally-dynamic presence-only species distribution models for a cryptic migratory bat impacted by wind energy development Seasonally-dynamic presence-only species distribution models for a cryptic migratory bat impacted by wind energy development
Understanding seasonal distribution and movement patterns of animals that migrate long distances is an essential part of monitoring and conserving their populations. Compared to migratory birds and other more conspicuous migrants, we know very little about the movement patterns of many migratory bats. Hoary bats (Lasiurus cinereus), a cryptic, wide-ranging, long-distance migrant...
Authors
Mark A. Hayes, Paul M. Cryan, Michael B. Wunder
Not to put too fine a point on it - does increasing precision of geographic referencing improve species distribution models for a wide-ranging migratory bat? Not to put too fine a point on it - does increasing precision of geographic referencing improve species distribution models for a wide-ranging migratory bat?
Bat specimens held in natural history museum collections can provide insights into the distribution of species. However, there are several important sources of spatial error associated with natural history specimens that may influence the analysis and mapping of bat species distributions. We analyzed the importance of geographic referencing and error correction in species distribution...
Authors
Mark A. Hayes, Katharine Ozenberger, Paul M. Cryan, Michael B. Wunder
Using sutures to attach miniature tracking tags to small bats for multimonth movement and behavioral studies Using sutures to attach miniature tracking tags to small bats for multimonth movement and behavioral studies
1. Determining the detailed movements of individual animals often requires them to carry tracking devices, but tracking broad-scale movement of small bats ( 30g) has been limited by transmitter technology and long-term attachment methods. This limitation inhibits our understanding of bat dispersal and migration, particularly in the context of emerging conservation issues like fatalities...
Authors
Kevin T. Castle, Theodore J. Weller, Paul M. Cryan, Cris D. Hein, Michael R. Schirmacher
Behavior of the Hawaiian Hawaiian Hoary Bat (Lasiurus cinereus semotus) at wind turbines and its distribution across the North Ko'olau Mountains, O'ahu Behavior of the Hawaiian Hawaiian Hoary Bat (Lasiurus cinereus semotus) at wind turbines and its distribution across the North Ko'olau Mountains, O'ahu
We studied the landscape distribution of endemic Hawaiian hoary bats (Lasiurus cinereus semotus) on the north Ko‘olau Mountains of O‘ahu, Hawai‘i, from May 2013 to May 2014, while simultaneously studying their behavior at wind turbines within the broader landscape. This research aimed to assess the risk that wind turbines pose to bats on the island and integrated a variety of methods...
Authors
P. M. Gorresen, Paul M. Cryan, Manuela M.P. Huso, Cris D. Hein, Michael Schirmacher, Jessica H. Johnson, Kristina Montoya-Aiona, Kevin W. Brinck, Frank Bonaccorso
Optimizing conservation strategies for Mexican freetailed bats: a population viability and ecosystem services approach Optimizing conservation strategies for Mexican freetailed bats: a population viability and ecosystem services approach
Conservation planning can be challenging due to the need to balance biological concerns about population viability with social concerns about the benefits biodiversity provide to society, often while operating under a limited budget. Methods and tools that help prioritize conservation actions are critical for the management of at-risk species. Here, we use a multi-attribute utility...
Authors
Ruscena Wiederholt, Laura Lopez-Hoffman, Colleen Svancara, Gary McCracken, Wayne E. Thogmartin, James E. Diffendorfer, Brady Mattson, Kenneth J. Bagstad, Paul M. Cryan, Amy Russell, Darius J. Semmens, Rodrigo A. Medellin
Watching the dark: New surveillance cameras are changing bat research Watching the dark: New surveillance cameras are changing bat research
It is, according to an old proverb, “better to light a candle than to curse the darkness.” And those of us trying to discover new insights into the mysterious lives of bats often do a lot of cursing in the darkness. Bats do most things under cover of night, and often in places where humans and most other animals can’t go. This dark inaccessibility is great for bats, but not so great for...
Authors
Paul M. Cryan, P. Marcos Gorresen
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.