Gary Krapu, PhD (Former Employee)
Science and Products
Filter Total Items: 105
Population and harvest dynamics of midcontinent sandhill cranes Population and harvest dynamics of midcontinent sandhill cranes
Sandhill cranes (Antigone canadensis) inhabiting the midcontinent of North America have been hunted since the 1960s under management goals of maintaining abundance, retaining geographic distribution, and maximizing sustainable harvest. Some biologists have raised concerns regarding harvest sustainability because sandhill cranes have lower reproductive rates than other game birds. We...
Authors
Aaron T. Pearse, Glen A. Sargeant, Gary Krapu, David A. Brandt
Northern Prairie Wildlife Research Center—Celebrating 50 years of science Northern Prairie Wildlife Research Center—Celebrating 50 years of science
The Northern Prairie Wildlife Research Center (NPWRC) celebrated its 50-year anniversary in 2015. This report is written in support of that observance. We document why and how the NPWRC came to be and describe some of its many accomplishments and the influence the Center’s research program has had on natural resource management. The history is organized by major research themes, proceeds...
Authors
Jane E. Austin, Terry L. Shaffer, Lawrence D. Igl, Douglas H. Johnson, Gary L. Krapu, Diane L. Larson, L. David Mech, David M. Mushet, Marsha A. Sovada
Sandhill crane roost selection, human disturbance, and forage resources Sandhill crane roost selection, human disturbance, and forage resources
Sites used for roosting represent a key habitat requirement for many species of birds because availability and quality of roost sites can influence individual fitness. Birds select roost sites based on numerous factors, requirements, and motivations, and selection of roosts can be dynamic in time and space because of various ecological and environmental influences. For sandhill cranes...
Authors
Aaron T. Pearse, Gary Krapu, David A. Brandt
Wintering Sandhill Crane exposure to wind energy development in the central and southern Great Plains, USA Wintering Sandhill Crane exposure to wind energy development in the central and southern Great Plains, USA
Numerous wind energy projects have been constructed in the central and southern Great Plains, USA, the main wintering area for midcontinental Sandhill Cranes (Grus canadensis). In an initial assessment of the potential risks of wind towers to cranes, we estimated spatial overlap, investigated potential avoidance behavior, and determined the habitat associations of cranes. We used data...
Authors
Aaron T. Pearse, David A. Brandt, Gary Krapu
Timing of spring surveys for midcontinent sandhill cranes Timing of spring surveys for midcontinent sandhill cranes
The U.S. Fish and Wildlife Service has used spring aerial surveys to estimate numbers of migrating sandhill cranes (Grus canadensis) staging in the Platte River Valley of Nebraska, USA. Resulting estimates index the abundance of the midcontinent sandhill crane population and inform harvest management decisions. However, annual changes in the index have exceeded biologically plausible...
Authors
Aaron T. Pearse, Gary L. Krapu, David A. Brandt, Glen A. Sargeant
Spring migration ecology of the mid-continent sandhill crane population with an emphasis on use of the Central Platte River Valley, Nebraska Spring migration ecology of the mid-continent sandhill crane population with an emphasis on use of the Central Platte River Valley, Nebraska
We conducted a 10-year study (1998–2007) of the Mid-Continent Population (MCP) of sandhill cranes (Grus canadensis) to identify spring-migration corridors, locations of major stopovers, and migration chronology by crane breeding affiliation (western Alaska–Siberia [WA–S], northern Canada–Nunavut [NC–N], west-central Canada–Alaska [WC–A], and east-central Canada–Minnesota [EC–M]). In the...
Authors
Gary L. Krapu, David A. Brandt, Paul J. Kinzel, Aaron T. Pearse
Long-term annual aeolian dust deposition data from seven locations in southeastern Utah Long-term annual aeolian dust deposition data from seven locations in southeastern Utah
These data are annual aeolian dust deposition calculations from vertical deposition at seven locations near the vicinity of Moab, Utah covering the period from 1999 to 2020. Data were collected by the U.S. Geological Survey Geosciences and Environmental Change Science Center (Denver, Colorado) and Southwest Biological Science Center (Moab, Utah) to "monitor sediment characteristics at...
Fecundity data for midcontinent sandhill cranes, 2003-2006 Fecundity data for midcontinent sandhill cranes, 2003-2006
Midcontinent sandhill cranes (Antigone canadensis) are the most abundant management population of cranes in the world and have a broad breeding range. Four breeding segments of midcontinent sandhill cranes have been designated based on spatial and temporal distributions throughout the year, including Western Alaska-Siberia (WA-S), Northern Canada-Nunavut (NC-N), West-central Canada...
Morphological measurements and subspecies of midcontinent sandhill cranes Morphological measurements and subspecies of midcontinent sandhill cranes
The midcontinent population of sandhill cranes (Antigone canadensis) has historically been classified into three putative subspecies, but genetic analyses have identified only two genetically distinct subspecies. Previous studies have successfully used morphometrics in combination with an individual's sex to differentiate subspecies of sandhill cranes that had been inferred based on...
Sandhill crane locations, autumn 2013 migration Sandhill crane locations, autumn 2013 migration
Sandhill cranes are a long-lived bird species found in wetland-rich landscapes across North America. This dataset includes locations of 5 cranes during a single autumn migration from their breeding areas in northeastern Asia and south through Alaska, central Canada, and the Great Plains. The migration ends in northern Texas and northern Mexico. These data were used as a case study to...
Sandhill crane phenology at the Platte River, Nebraska, 2001-2007 Sandhill crane phenology at the Platte River, Nebraska, 2001-2007
The central Platte River Valley represents a key mid-latitude stopover. This dataset supports a contemporary analysis of spring migration phenology at the Platte River during 2001-2007. We recorded timing of sandhill crane arrivals and departures from the Platte River.
Science and Products
Filter Total Items: 105
Population and harvest dynamics of midcontinent sandhill cranes Population and harvest dynamics of midcontinent sandhill cranes
Sandhill cranes (Antigone canadensis) inhabiting the midcontinent of North America have been hunted since the 1960s under management goals of maintaining abundance, retaining geographic distribution, and maximizing sustainable harvest. Some biologists have raised concerns regarding harvest sustainability because sandhill cranes have lower reproductive rates than other game birds. We...
Authors
Aaron T. Pearse, Glen A. Sargeant, Gary Krapu, David A. Brandt
Northern Prairie Wildlife Research Center—Celebrating 50 years of science Northern Prairie Wildlife Research Center—Celebrating 50 years of science
The Northern Prairie Wildlife Research Center (NPWRC) celebrated its 50-year anniversary in 2015. This report is written in support of that observance. We document why and how the NPWRC came to be and describe some of its many accomplishments and the influence the Center’s research program has had on natural resource management. The history is organized by major research themes, proceeds...
Authors
Jane E. Austin, Terry L. Shaffer, Lawrence D. Igl, Douglas H. Johnson, Gary L. Krapu, Diane L. Larson, L. David Mech, David M. Mushet, Marsha A. Sovada
Sandhill crane roost selection, human disturbance, and forage resources Sandhill crane roost selection, human disturbance, and forage resources
Sites used for roosting represent a key habitat requirement for many species of birds because availability and quality of roost sites can influence individual fitness. Birds select roost sites based on numerous factors, requirements, and motivations, and selection of roosts can be dynamic in time and space because of various ecological and environmental influences. For sandhill cranes...
Authors
Aaron T. Pearse, Gary Krapu, David A. Brandt
Wintering Sandhill Crane exposure to wind energy development in the central and southern Great Plains, USA Wintering Sandhill Crane exposure to wind energy development in the central and southern Great Plains, USA
Numerous wind energy projects have been constructed in the central and southern Great Plains, USA, the main wintering area for midcontinental Sandhill Cranes (Grus canadensis). In an initial assessment of the potential risks of wind towers to cranes, we estimated spatial overlap, investigated potential avoidance behavior, and determined the habitat associations of cranes. We used data...
Authors
Aaron T. Pearse, David A. Brandt, Gary Krapu
Timing of spring surveys for midcontinent sandhill cranes Timing of spring surveys for midcontinent sandhill cranes
The U.S. Fish and Wildlife Service has used spring aerial surveys to estimate numbers of migrating sandhill cranes (Grus canadensis) staging in the Platte River Valley of Nebraska, USA. Resulting estimates index the abundance of the midcontinent sandhill crane population and inform harvest management decisions. However, annual changes in the index have exceeded biologically plausible...
Authors
Aaron T. Pearse, Gary L. Krapu, David A. Brandt, Glen A. Sargeant
Spring migration ecology of the mid-continent sandhill crane population with an emphasis on use of the Central Platte River Valley, Nebraska Spring migration ecology of the mid-continent sandhill crane population with an emphasis on use of the Central Platte River Valley, Nebraska
We conducted a 10-year study (1998–2007) of the Mid-Continent Population (MCP) of sandhill cranes (Grus canadensis) to identify spring-migration corridors, locations of major stopovers, and migration chronology by crane breeding affiliation (western Alaska–Siberia [WA–S], northern Canada–Nunavut [NC–N], west-central Canada–Alaska [WC–A], and east-central Canada–Minnesota [EC–M]). In the...
Authors
Gary L. Krapu, David A. Brandt, Paul J. Kinzel, Aaron T. Pearse
Long-term annual aeolian dust deposition data from seven locations in southeastern Utah Long-term annual aeolian dust deposition data from seven locations in southeastern Utah
These data are annual aeolian dust deposition calculations from vertical deposition at seven locations near the vicinity of Moab, Utah covering the period from 1999 to 2020. Data were collected by the U.S. Geological Survey Geosciences and Environmental Change Science Center (Denver, Colorado) and Southwest Biological Science Center (Moab, Utah) to "monitor sediment characteristics at...
Fecundity data for midcontinent sandhill cranes, 2003-2006 Fecundity data for midcontinent sandhill cranes, 2003-2006
Midcontinent sandhill cranes (Antigone canadensis) are the most abundant management population of cranes in the world and have a broad breeding range. Four breeding segments of midcontinent sandhill cranes have been designated based on spatial and temporal distributions throughout the year, including Western Alaska-Siberia (WA-S), Northern Canada-Nunavut (NC-N), West-central Canada...
Morphological measurements and subspecies of midcontinent sandhill cranes Morphological measurements and subspecies of midcontinent sandhill cranes
The midcontinent population of sandhill cranes (Antigone canadensis) has historically been classified into three putative subspecies, but genetic analyses have identified only two genetically distinct subspecies. Previous studies have successfully used morphometrics in combination with an individual's sex to differentiate subspecies of sandhill cranes that had been inferred based on...
Sandhill crane locations, autumn 2013 migration Sandhill crane locations, autumn 2013 migration
Sandhill cranes are a long-lived bird species found in wetland-rich landscapes across North America. This dataset includes locations of 5 cranes during a single autumn migration from their breeding areas in northeastern Asia and south through Alaska, central Canada, and the Great Plains. The migration ends in northern Texas and northern Mexico. These data were used as a case study to...
Sandhill crane phenology at the Platte River, Nebraska, 2001-2007 Sandhill crane phenology at the Platte River, Nebraska, 2001-2007
The central Platte River Valley represents a key mid-latitude stopover. This dataset supports a contemporary analysis of spring migration phenology at the Platte River during 2001-2007. We recorded timing of sandhill crane arrivals and departures from the Platte River.