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Full-Text Articles in Life Sciences

Open Textbook Project [Poster], Sue Ann Gardner Jun 2019

Open Textbook Project [Poster], Sue Ann Gardner

Library Conference Presentations and Speeches

Details of a porject undertaken to collaboratively write and produce an open access parasitology textbook for undergraduate and graduate students. The book will be published by Zea Books at the University of Nebraska-Lincoln in 2020 and be available in English and Spanish both online and print-on-demand through lulu.com.

Co-Executive Editors: Sue Ann Gardner and Scott L. Gardner, University of nebraska-Lincoln. Copyeditor: Linnea Fredrickson, University of Nebraska-Lincoln. Spanish Translator: Yoanna Esquivel Greenwood, University of Nebraska-Lincoln. Project Coordinator: Sue Ann Gardner.

Project website: https://digitalcommons.unl.edu/parasittext/.


Wyoming Wildlife: A Natural History, Paul Johnsgard, Thomas D. Mangelsen Jun 2019

Wyoming Wildlife: A Natural History, Paul Johnsgard, Thomas D. Mangelsen

Zea E-Books

This book surveys Wyoming’s mammal, bird, reptile, and amphibian faunas. In addition to introducing the state’s geography, geology, climate, and major ecosystems, it provides 65 biological profiles of 72 mammal species, 195 profiles of 196 birds, 9 profiles of 12 reptiles, and 6 profiles of 9 amphibians. There are also species lists of Wyoming’s 117 mammals, 445 birds, 22 reptiles, and 12 amphibians. Also included are descriptions of nearly 50 national and state properties, including parks, forests, preserves, and other public-access natural areas in Wyoming. The book includes a text of more than 150,000 words, nearly ...


Nebraska Strong - Social Capital In Action, Marilyn Schlake Apr 2019

Nebraska Strong - Social Capital In Action, Marilyn Schlake

Cornhusker Economics

We have heard it and we have witnessed it in action. Nebraska Strong has been a unifying message that is bringing Nebraskans, friends and family together from across the nation. Signifying strength, determination, and a resolve to rebuild, Nebraska Strong has bolstered communities and individuals who have, in some cases, lost all semblance of what they had prior to the disastrous March blizzard and floods. Through this simple message, individuals have begun to utilize their social group networks or social capital to support recovery efforts.

Through the study of communities that have experienced major disasters, researchers found the existence of ...


The Impact Of Different Data Processing Methods On Site-Specific Management Recommendation, Taro Mieno, Joe D. Luck, Zhengzheng Gao Apr 2019

The Impact Of Different Data Processing Methods On Site-Specific Management Recommendation, Taro Mieno, Joe D. Luck, Zhengzheng Gao

Cornhusker Economics

Precision agriculture has the potential to enhance farming profitability substantially via site-specific management of fields. One of the promising ways of generating such profitability-enhancing input is to a use recommendation map is on-farm randomized trials. The process of generating an input (say nitrogen) using a recommendation map typically involves the following steps:

1. Design and implement randomized input use trial

2. Collect yield data along with other field characteristics (Slope, Electrical Conductivity, and Organic Matter)

3. Process the data for statistical analysis

4. Conduct regression analysis to estimate production function (how the input affect crop yield)

5. For each of ...


The Role Of Insured Bushels And Pre-Harvest Hedging For An Eastern Nebraska County Under Rain-Fed Growing Conditions, Cory Walters, Richard Preston Apr 2019

The Role Of Insured Bushels And Pre-Harvest Hedging For An Eastern Nebraska County Under Rain-Fed Growing Conditions, Cory Walters, Richard Preston

Cornhusker Economics

At the beginning of the crop year crop producers face unknown yields and prices resulting in a large range of end of season (fall) net income. Producers can chose to participate in risk management tools, resulting in a reshaping of the fall net income distribution. Two of the most common tools are crop insurance and pre-harvest hedging (hereafter referred to as hedging). The most common crop insurance policy sold today is Revenue Protection (RP) where both yield and prices are insured. RP policy represents an intriguing crop insurance contract since it not only insures against price declines between spring and ...


Nebraska Women In Agriculture “Take Charge Of Change”, Jessica J. Groskopf Mar 2019

Nebraska Women In Agriculture “Take Charge Of Change”, Jessica J. Groskopf

Cornhusker Economics

A crowd of almost 300 gathered together Feb. 21 and 22 in Kearney, Nebraska for the 34th Annual Nebraska Women in Agriculture Conference, with the theme “Take Charge of Change.”

The conference is one of the longest-running women's conferences of its kind in the country. The goal of the Nebraska Women in Agriculture Conference is for women to build relationships with each other while gaining valuable knowledge about managing risk on their farms and ranches. The event featured 4 general session speakers and over 30 workshop sessions.

The keynote speaker this year was Marji Guyler- Alaniz, President and Founder ...


Market Impacts Of A Meat Tax, Regan Gilmore, Azzeddine Azzam Mar 2019

Market Impacts Of A Meat Tax, Regan Gilmore, Azzeddine Azzam

Cornhusker Economics

Over time, animal activists and environmentalists have made calls to put a tax on meat. What effect would that have? To find out, we estimated the impacts that a retail-level greenhouse gas (GHG) tax on meat would have on livestock and grain markets.

The research used a multi-market economic model that integrates the beef, pork, and poultry markets with the corn, distillers' grain, soybean, soymeal, and ethanol markets. For GHG taxes, we used those provided by Springman et al. based on a emission price (social cost) of $52 per metric ton of carbon dioxide equivalent estimated by EPA. Emissions by ...


Nebraska Farm Real Estate Values Continue Gradual Declines In 2019, Jim Jansen, Jeff Stokes Mar 2019

Nebraska Farm Real Estate Values Continue Gradual Declines In 2019, Jim Jansen, Jeff Stokes

Cornhusker Economics

The market value of agricultural land in Nebraska declined by three percent over the prior year to an average of $2,650 per acre according to the 2019 Nebraska Farm Real Estate Market Survey (Figure 1 and Table 1). This marks the fifth consecutive year of downward pressure as market values have dropped approximately 20 percent since reaching a high of $3,315 in 2014.

The University of Nebraska-Lincoln Department of Agricultural Economics annually surveys Nebraska land professionals including appraisers, farm and ranch managers, and agricultural bankers. Results from the survey are divided by land class and summarized by the ...


Things To Consider Before Co-Signing A Loan, J. David Aiken Mar 2019

Things To Consider Before Co-Signing A Loan, J. David Aiken

Cornhusker Economics

Parents co-signing loans for their children is common in agriculture. This usually happens when the child needs a loan to purchase land, livestock, or farm equipment. Lenders are more willing to make the loan to a beginning producer if the parents co-sign. This means the parents promise to repay the loan if the younger producer cannot. Parents have been doing this as a way to help their kids get started in agriculture for decades. If the child turns out to be an effective producer, the risk of the parents being on the hook for the unpaid loan balance is pretty ...


Escaping Death: Naloxone's Chemical Nature And Potential To Combat The Opioid Epidemic, Abigale Miller Mar 2019

Escaping Death: Naloxone's Chemical Nature And Potential To Combat The Opioid Epidemic, Abigale Miller

Honors Theses, University of Nebraska-Lincoln

Naloxone is a life-saving drug with the ability to reverse an opioid overdose. As the opioid epidemic’s death toll rises, we can turn to Naloxone as a tool to combat the crisis. The epidemic, born of corruption, has a wide reach among the people of the United States, with especially firm grasps on middle-aged people, sufferers of chronic pain, white Americans and those living in the eastern portion of the country. Naloxone’s elegant design saves lives by effectively competing for a position on an opioid biding receptor in the brain to almost instantly end an overdose and restore ...


Emerging Themes From The Esa Symposium Entitled “Pollinator Nutrition: Lessons From Bees At Individual To Landscape Levels”, Vanessa Corby-Harris, Julia H. Bowsher, Morgan Carr-Markell, Mark J. Carroll, Mary Centrella, Steven C. Cook, Margaret Couvillon, Gloria Degrandi-Hoffman, Adam Dolezal, Julia C. Jones, Christina L. Mogren, Clint R. V. Otto, Pierre Lau, Juliana Rangel, Roger Schürch, Ashley St. Clair Mar 2019

Emerging Themes From The Esa Symposium Entitled “Pollinator Nutrition: Lessons From Bees At Individual To Landscape Levels”, Vanessa Corby-Harris, Julia H. Bowsher, Morgan Carr-Markell, Mark J. Carroll, Mary Centrella, Steven C. Cook, Margaret Couvillon, Gloria Degrandi-Hoffman, Adam Dolezal, Julia C. Jones, Christina L. Mogren, Clint R. V. Otto, Pierre Lau, Juliana Rangel, Roger Schürch, Ashley St. Clair

USGS Northern Prairie Wildlife Research Center

Pollinator populations are declining (Biesmeijer et al., 2006; Brodschneider et al., 2018; Cameron et al., 2011; Goulson, Lye, & Darvill, 2008; Kulhanek et al., 2017; National Research Council, 2007; Oldroyd, 2007), and both anecdotal and experimental evidence suggest that limited access to high quality forage might play a role (Carvell, Meek, Pywell, Goulson, & Nowakowski, 2007; Deepa et al., 2017; Goulson, Nicholls, Botias, & Rotheray, 2015; Potts et al., 2003, 2010; Vanbergen & The Insect Pollinators Initiative, 2013; Vaudo, Tooker, Grozinger, & Patch, 2015; Woodard, 2017). Multiple researchers are earnestly addressing this topic in a diverse array of insect-pollinator systems. As research continues to be published, increased communication among scientists studying the topic of nutrition is essential for ...


2019 Nebraska Property Tax School Funding Issues, J. David Aiken Feb 2019

2019 Nebraska Property Tax School Funding Issues, J. David Aiken

Cornhusker Economics

Nebraska agricultural property taxes are among the highest in the United States. Over the last three years, Nebraska farmers and ranchers have paid nearly 31 percent of their net farm income as property taxes (47 percent in 2017). When state and federal taxes are factored in, this represents an effective tax rate of more than 50 percent (over 60 percent in 2017). While no one particularly enjoys paying property taxes (or any other tax), property taxes are especially burdensome for Nebraska farmers and ranchers.

The proposed 2020 constitutional amendment to provide property tax relief would require dramatic state spending cuts ...


Pro-Poor Rural Growth Of Agricultural Food Through Rural Public Library Services For The Attainment Of Sustainable Development Goals (Sdgs) In Nigeria, Abdullahi A. Bakare, Esther Temitope Olaniyi, Mosunmade Opeoluwa Oloruntola Feb 2019

Pro-Poor Rural Growth Of Agricultural Food Through Rural Public Library Services For The Attainment Of Sustainable Development Goals (Sdgs) In Nigeria, Abdullahi A. Bakare, Esther Temitope Olaniyi, Mosunmade Opeoluwa Oloruntola

Library Philosophy and Practice (e-journal)

The economic challenges in Nigeria make it to suffer from food insecurity which is due to low agricultural production and productivity. Specific initiatives by the Federal Government on pro-poor rural agricultural food growth to achieve SDGs to end hunger have been established. Similar structures have also been established in all the 36 States of the Federation and, in some cases, at Local Government Area level. The government is also with the support of the United Nations Development Programme (UNDP), and a wide array of stakeholders. Use of pro-poor rural agricultural food growth through rural public library services to achieve the ...


Effects Of Land Use On Greenhouse Gas Flux In Playa Wetlands And Associated Watersheds In The High Plains, Usa, Dale W. Daniel, Loren M. Smith, Scott T. Mcmurry, Brian A. Tangen, Charles F. Dahl, Ned H. Euliss Jr., Ted Lagrange Feb 2019

Effects Of Land Use On Greenhouse Gas Flux In Playa Wetlands And Associated Watersheds In The High Plains, Usa, Dale W. Daniel, Loren M. Smith, Scott T. Mcmurry, Brian A. Tangen, Charles F. Dahl, Ned H. Euliss Jr., Ted Lagrange

USGS Northern Prairie Wildlife Research Center

In the High Plains, U.S., native prairie conversion to cropland agriculture has resulted in a loss of service delivery capabilities from most depressional wet-lands as a result of sedimentation. Restoring historic hydrological conditions to affected wetlands may rejuvenate some services, however, there may be tradeoffs due to emissions of CH4 and N2O. We evaluated the influence of two predominant conservation programs (Wetlands Reserve Program, WRP and Conservation Reserve Program, CRP) on gas emissions (CO2, CH4, N2O) from 42 playas and uplands in the High Plains of Nebraska. Because playa restoration through the WRP is most prevalent in the Rainwater ...


Three Key Factors To Balance When Choosing A Calving Season Based On Profitability, Matt Stockton, Devin Broadhead Feb 2019

Three Key Factors To Balance When Choosing A Calving Season Based On Profitability, Matt Stockton, Devin Broadhead

Cornhusker Economics

Cow producers base major decisions such as calving season on expected economic outcomes which include productivity, input costs, personal capability, individual preferences, markets, and so on. Calving systems are generally categorized into three seasons, spring, summer and fall. Many producers select the spring calving season to maximize the weaned calf weight at the end of the summer grass season. Unfortunately this increases feeding costs since extra nutrition is needed in the spring, prior to pastures being opened. Also due to the widespread adoption of this early spring calving, the mass marketing in late fall often results in depressed calf prices ...


Three Key Factors To Balance When Choosing A Calving Season Based On Profitability, Matt Stockton, Devin Broadhead Feb 2019

Three Key Factors To Balance When Choosing A Calving Season Based On Profitability, Matt Stockton, Devin Broadhead

Cornhusker Economics

Cow producers base major decisions such as calving season on expected economic outcomes which include productivity, input costs, personal capability, individual preferences, markets, and so on. Calving systems are generally categorized into three seasons, spring, summer and fall. Many producers select the spring calving season to maximize the weaned calf weight at the end of the summer grass season. Unfortunately this increases feeding costs since extra nutrition is needed in the spring, prior to pastures being opened. Also due to the widespread adoption of this early spring calving, the mass marketing in late fall often results in depressed calf prices ...


Negotiating Cash Rent: What It Takes To Negotiate Like A Pro, Austin Duerfeldt Feb 2019

Negotiating Cash Rent: What It Takes To Negotiate Like A Pro, Austin Duerfeldt

Cornhusker Economics

The number one question I receive is about cash rent prices. Many landlords and tenants are working to find an equitable arrangement before February 28, 2019. Given the constraints on both sides, real estate taxes and the farm economy finding that arrangement is difficult. Becoming creative in how you analyze and value different cash rent options is necessary. Before sitting down face to face, here are some suggestions and preparations I recommend that can help maximize success.


Per-Ingredient Calorie Information Reduces Calories Ordered More In A Food-Away-From-Home Setting Than Information Provided Per, Christopher Gustafson, Eliana Zeballos Feb 2019

Per-Ingredient Calorie Information Reduces Calories Ordered More In A Food-Away-From-Home Setting Than Information Provided Per, Christopher Gustafson, Eliana Zeballos

Cornhusker Economics

Obesity rates in the United States have risen dramatically over the past five decades, reaching what many public health officials have referred to as epidemic proportions. A common policy response to this obesity epidemic—which is often attributed to overconsumption of highly caloric, unhealthy foods—has been to increase consumers’ access to nutrition information to help them to make healthier choices. Recently, the increasing frequency of food consumption at restaurants led to the development of nutrition labeling requirements for restaurants with 20 or more locations. The rule, requiring food retailers to post calorie amounts and to make available information about ...


Behavioral Flexibility Of A Generalist Carnivore, Sarah E. Daniels, Rachel E. Fanelli, Amy Gilbert, Sarah Sarah Benson‑Amram Feb 2019

Behavioral Flexibility Of A Generalist Carnivore, Sarah E. Daniels, Rachel E. Fanelli, Amy Gilbert, Sarah Sarah Benson‑Amram

USDA National Wildlife Research Center - Staff Publications

Innovative problem solving, repeated innovation, learning, and inhibitory control are cognitive abilities commonly regarded as important components of behaviorally flexible species. Animals exhibiting these cognitive abilities may be more likely to adapt to the unique demands of living in novel and rapidly changing environments, such as urbanized landscapes. Raccoons

(Procyon lotor) are an abundant, generalist species frequently found in urban habitats, and are capable of innovative problem solving, which makes them an ideal species to assess their behavioral flexibility. We gave 20 captive raccoons a multi-access puzzle box to investigate which behavioral and cognitive mechanisms enable the generation of innovative ...


Tax Strategies For Farmers And Cooperatives Under The New Section 199a, Greg Mckee Jan 2019

Tax Strategies For Farmers And Cooperatives Under The New Section 199a, Greg Mckee

Cornhusker Economics

This tax season will be the first time cooperatives and their patrons will consider the income tax consequences of the Tax Cuts and Jobs Act of 2017 (TCJA). A key element of the TCJA, Section 199A, affects farm income tax liability. Not only is the Section 199A deduction a good tax break for farmers, it changes incentives for farmer patrons to market through cooperatives. It also changes incentives for how cooperatives distribute their income. Cooperative members, their boards of directors, and management teams will have many tax strategy options to consider in 2019.

The good news about Section 199A is ...


Trends In Nebraska Agricultural Land Ownership And Rental Patterns, Jim Jansen, Jay Parsons, Kate Brooks Jan 2019

Trends In Nebraska Agricultural Land Ownership And Rental Patterns, Jim Jansen, Jay Parsons, Kate Brooks

Cornhusker Economics

In Nebraska, different types of rental arrangements are used on agricultural land. These arrangements commonly include crop share, cash lease, and cash lease with flexible provisions.

Crop Share: landowner receives a percentage of actual crop yield as payment for leasing the agricultural land to the tenant. The landowner may share input and production costs of raising the crop.

Cash Leases: landowner receives an agreed upon cash payment amount for leasing the agricultural land to the tenant.

Cash lease with Flexible Provisions: land owner and tenant set a base cash rental rate which can flex upon actual crop yields, prices, or ...


Avoid Family Trouble When Planning Farm/Ranch Succession, Allan Vyhnalek Jan 2019

Avoid Family Trouble When Planning Farm/Ranch Succession, Allan Vyhnalek

Cornhusker Economics

The story goes like this: The family has one brother who stayed on the farm to work with Mom and Dad. Mom and Dad are now gone. The other brothers and sisters are now wanting to meet to determine an equitable way to split the assets. The on-farm brother has been there over 50 years. He has contributed sweat, management, and value to the operation for decades.

Then the reality sets in. There is a family conversation about the farm now that the parents are gone. It is fairly common to have a difference in perception about the on-farm brother ...


Whooping Crane Use Of Riverine Stopover Sites, David M. Baasch, Patrick D. Farrell, Shay Howlin, Aaron T. Pearse, Jason M. Farnsworth, Chadwin B. Smith Jan 2019

Whooping Crane Use Of Riverine Stopover Sites, David M. Baasch, Patrick D. Farrell, Shay Howlin, Aaron T. Pearse, Jason M. Farnsworth, Chadwin B. Smith

USGS Northern Prairie Wildlife Research Center

Migratory birds like endangered whooping cranes (Grus americana) require suitable nocturnal roost sites during twice annual migrations. Whooping cranes primarily roost in shallow surface water wetlands, ponds, and rivers. All these features have been greatly impacted by human activities, which present threats to the continued recovery of the species. A portion of one such river, the central Platte River, has been identified as critical habitat for the survival of the endangered whooping crane. Management intervention is now underway to rehabilitate habitat form and function on the central Platte River to increase use and thereby contribute to the survival of whooping ...


Modeling Effects Of Crop Production, Energy Development And Conservation-Grassland Loss On Avian Habitat, Jiill A. Shaffer, Cali L. Roth, David M. Mushet Jan 2019

Modeling Effects Of Crop Production, Energy Development And Conservation-Grassland Loss On Avian Habitat, Jiill A. Shaffer, Cali L. Roth, David M. Mushet

USGS Northern Prairie Wildlife Research Center

Birds are essential components of most ecosystems and provide many services valued by society. However, many populations have undergone striking declines as their habitats have been lost or degraded by human activities. Terrestrial grasslands are vital habitat for birds in the North American Prairie Pothole Region (PPR), but grassland conversion and fragmentation from agriculture and energy-production activities have destroyed or degraded millions of hectares. Conservation grasslands can provide alternate habitat. In the United States, the Conservation Reserve Program (CRP) is the largest program maintaining conservation grasslands on agricultural lands, but conservation grasslands in the PPR have declined by over 1 ...


Examining Preferences For Rural Living And How To Save The Rural Economy, Rebecca J. Vogt Jan 2019

Examining Preferences For Rural Living And How To Save The Rural Economy, Rebecca J. Vogt

Cornhusker Economics

Recent articles in the New York Times and the Washington Post discuss preferences for rural living and if rural economies can be saved. Data from the Nebraska Rural Poll and other state surveys are used to further explore these topics.


Mortality In Aransas-Wood Buffalo Whooping Cranes: Timing, Location, And Causes, Aaron T. Pearse, David A. Brandt, Barry K. Hartup, Mark T. Bidwell Jan 2019

Mortality In Aransas-Wood Buffalo Whooping Cranes: Timing, Location, And Causes, Aaron T. Pearse, David A. Brandt, Barry K. Hartup, Mark T. Bidwell

USGS Northern Prairie Wildlife Research Center

The Aransas-Wood Buffalo Population (AWBP) of Whooping Cranes (Grus americana) has experienced a population growth rate of approximately 4% for multiple decades (Butler et al., 2014a; Miller et al., 1974). Population growth for long-lived species of birds is generally highly sensitive to variation in adult mortality rates (Sæther and Bakke, 2000). A population model for endangered Red-crowned Cranes (Grus japonensis) in Japan conforms to this pattern, where growth rate is most sensitive to adult mortality (Masatomi et al., 2007). Earlier analyses observed that the AWBP growth rate increased in the mid-1950s and that this increase was likely caused by reduced ...


Research Output Of Icar-Indian Institute Of Horticultural Research: A Scientometric Study, Suresh N, Thanuskodi S Dr Jan 2019

Research Output Of Icar-Indian Institute Of Horticultural Research: A Scientometric Study, Suresh N, Thanuskodi S Dr

Library Philosophy and Practice (e-journal)

This paper deals with the analysis of research output of ICAR- Indian Institute of Horticulture, Bangalore (ICAR-IIHR) during 1989 to 2018 appeared in web of science database. It attempts to analyze the growth and development of research activity of ICAR-IIHR as reflected in publications output in web of science database. Data for a study is total of 1095 have been downloaded and analyzed according to objectives. The study reveals that the growth of literature follows the exponential growth pattern, journal articles are the most published form of literature (90.13%), Indian Journal of Agricultural Sciences followed by Current Science are ...


Digital Repositories In Ecology And Environment: An Analytical Study, Midhat Mehraj, Ikhlaq Ur Rehman, Shohar Bano Jan 2019

Digital Repositories In Ecology And Environment: An Analytical Study, Midhat Mehraj, Ikhlaq Ur Rehman, Shohar Bano

Library Philosophy and Practice (e-journal)

The present study aims to identify the status of Open Access Repositories (OARs) in the field of Ecology and Environment. The data was collected from the Directory of Open Access Repositories (OpenDOAR). Data collected was analysed on different parameters such as geographical distribution, software usage, content type, repository type and language diversity. As of now OpenDOAR holds 176 repositories in the field of Ecology and Environment. The findings further reveal that the maximum number of repositories belong to the USA accounting for 18(10.2%). Also, the maximum number of repositories are institutional accounting for 134(76%).


Diurnal Habitat Selection Of Migrating Whooping Crane In The Great Plains, David M. Baasch, Patrick D. Farrell, Aaron T. Pearse, David A. Brandt, Andrew J. Caven, Mary J. Harner, Greg D. Wright, Kristine L. Metzger Jan 2019

Diurnal Habitat Selection Of Migrating Whooping Crane In The Great Plains, David M. Baasch, Patrick D. Farrell, Aaron T. Pearse, David A. Brandt, Andrew J. Caven, Mary J. Harner, Greg D. Wright, Kristine L. Metzger

USGS Northern Prairie Wildlife Research Center

Available stopover habitats with quality foraging opportunities are essential for migrating waterbirds, including Whooping Crane (Grus americana). Several studies have evaluated habitats used by Whooping Crane for roosting throughout its migration corridor; however, habitats associated with foraging and other diurnal activities have received less attention. We used data collected from 42 Whooping Crane individuals that included 2169 diurnal use locations within 395 stopover sites evaluated during spring 2013 to fall 2015 to assess diurnal habitat selection throughout the U.S. portion of the migration corridor. We found that Whooping Crane selected wetland land-cover types (i.e., open water, riverine, and ...


Revisiting The Historic Distribution And Habitats Of The Whooping Crane, Jane E. Austin, Matthew A. Hayes, Jeb A. Barzen Jan 2019

Revisiting The Historic Distribution And Habitats Of The Whooping Crane, Jane E. Austin, Matthew A. Hayes, Jeb A. Barzen

USGS Northern Prairie Wildlife Research Center

Understanding the historic range and habitats of an endangered species can assist in conservation and reintroduction efforts for that species. Individuals reintroduced into a species’ historic core range have a higher survival rate compared to individuals introduced near the periphery or outside the historic range (Falk and Olwell, 1992; Griffith et al., 1989). Individuals on the periphery of a species’ range tend to occupy less favorable habitats and have lower and more variable densities than those near the core of their range (Brown, 1984; Brown et al., 1995, 1996). Such conclusions, however, presume that historic habitats have not changed since ...