Rangeland Management During Drought: Assessing Social–Ecological And Cognitive Indicators Of Ranchers’ Adaptive Capacity,
2019
University of Nebraska-Lincoln
Rangeland Management During Drought: Assessing Social–Ecological And Cognitive Indicators Of Ranchers’ Adaptive Capacity, Tonya Haigh
School of Natural Resources: Dissertations, Theses, and Student Research
Rangeland managers face challenges to adapt to climate extremes, and research is needed on how to support their adaptive capacity for managing climate risk. This study evaluates adaptive capacity using an integrated vulnerability and resilience conceptual model and three cognitive behavioral models. Overarching research questions focus on the relationship between protective action and impacts and the best predictors of taking action in response to drought. Three studies address these questions, using quantitative data collected from two post-drought surveys of rangeland-based livestock managers in the Northern Great Plains of the U.S. The studies find evidence of the roles of social-ecological sources …
Effectiveness Of Snap And A24-Automated Traps And Broadcast Anticoagulant Bait In Suppressing Commensal Rodents In Hawaii,
2019
USDA, APHIS, Wildlife Services’ National Wildlife Research Center
Effectiveness Of Snap And A24-Automated Traps And Broadcast Anticoagulant Bait In Suppressing Commensal Rodents In Hawaii, Aaron B. Shiels, Tyler Bogardus, Jobriath Rohrer, Kapua Kawelo
United States Department of Agriculture Wildlife Services: Staff Publications
Commensal rodents (invasive rats, Rattus spp.; house mice, Mus musculus) are well established globally. They threaten human health by disease transfer and impact economies by causing agricultural damage. On island landscapes, they are frequent predators of native species and affect biodiversity. To provide managers with better information regarding methods to suppress commensal rodent populations in remote island forests, in 2016 we evaluated the effectiveness of continuous rat trapping using snap-traps, Goodnature® A24 self-resetting rat traps, and a 1-time (2-application) hand-broadcast of anticoagulant rodenticide bait pellets (Diphacinone-50) applied at 13.8 kg/ha per application in a 5-ha forest on Oahu, Hawaii, USA. …
Application Strategy For An Anthraquinonebased Repellent And The Protection Of Soybeans From Canada Goose Depredation,
2019
USDA National Wildlife Research Center
Application Strategy For An Anthraquinonebased Repellent And The Protection Of Soybeans From Canada Goose Depredation, Scott J. Werner, Matthew Gottlob, Charles D. Dieter, Joshua D. Stafford
United States Department of Agriculture Wildlife Services: Staff Publications
Agricultural crops can sustain extensive damage caused by Canada geese (Branta canadensis) when these crops are planted near wetlands or brood-rearing sites. From 2000 to 2015, South Dakota Game, Fish and Parks spent >$5.6 million to manage damages caused by Canada geese to agricultural crops (primarily soybeans) in South Dakota, USA. For the purpose of developing a repellent application strategy for nonlethal goose damage management, we comparatively evaluated the width of anthraquinone applications (i.e., 9.4 L Flight Control® Plus goose repellent/ha [active ingredient: 50% 9,10-anthraquinone] at 0–36 m versus 0–73 m perpendicular to the edge of wetlands in 2014), the …
A Review Of Rat Lungworm Infection And Recent Data On Its Definitive Hosts In Hawaii,
2019
USDA, APHIS, Wildlife Services, National Wildlife Research Center
A Review Of Rat Lungworm Infection And Recent Data On Its Definitive Hosts In Hawaii, Chris Niebuhr, Susan I. Jarvi, Shane R. Siers
United States Department of Agriculture Wildlife Services: Staff Publications
Rat lungworm (Angiostrongylus cantonensis) is a zoonotic nematode that causes rat lungworm disease (angiostrongyliasis), a potentially debilitating form of meningitis, in humans worldwide. The definitive hosts for rat lungworm are primarily members of the genus Rattus, with gastropods as intermediate hosts. This parasite has emerged as an important public health concern in the United States, especially in Hawaii, where the number of human cases has increased in the last decade. Here we discuss the current knowledge of the rat lungworm, including information on the life cycle and host species, as well as updates on known infection levels. Three species of …
Estimating Waterbird Abundance On Catfish Aquaculture Ponds Using An Unmanned Aerial System,
2019
Mississippi State University
Estimating Waterbird Abundance On Catfish Aquaculture Ponds Using An Unmanned Aerial System, Paul C. Burr, Sathishkumar Samiappan, Lee A. Hathcock, Robert J. Moorhead, Brian S. Dorr
United States Department of Agriculture Wildlife Services: Staff Publications
In this study, we examined the use of an unmanned aerial system (UAS) to monitor fish-eating birds on catfish (Ictalurus spp.) aquaculture facilities in Mississippi, USA. We tested 2 automated computer algorithms to identify bird species using mosaicked imagery taken from a UAS platform. One algorithm identified birds based on color alone (color segmentation), and the other algorithm used shape recognition (template matching), and the results of each algorithm were compared directly to manual counts of the same imagery. We captured digital imagery of great egrets (Ardea alba), great blue herons (A. herodias), and doublecrested cormorants (Phalacrocorax auritus) on aquaculture …
Economic And Livestock Health Impacts Of Birds On Dairies: Evidence From A Survey Of Washington Dairy Operators,
2019
National Wildlife Research Center, USDA/APHIS/WS
Economic And Livestock Health Impacts Of Birds On Dairies: Evidence From A Survey Of Washington Dairy Operators, Julie L. Elser, Amber L. Adams Progar, Karen M.M. Steensma, Tyler P. Caskin, Susan R. Kerr, Stephanie A. Shwiff
United States Department of Agriculture Wildlife Services: Staff Publications
The survey described in this research paper aimed to investigate the economic and health impacts of birds on dairies. Birds are common pests on dairies, consuming and contaminating feed intended for cattle. As a result, dairy operators experience increased feed costs and increased pathogen and disease risk. We surveyed dairy operators attending the 2017 Washington Dairy Conference to examine the impact of birds on dairies in Washington State. Dairy operators reported feed losses valued at $55 per cow resulting in annual losses totaling $5.5 million in the Western region of the state and $9.2 million in the Eastern region of …
Double-Crested Cormorant Colony Effects On Soil Chemistry, Vegetation Structure And Avian Diversity,
2019
Mississippi State University
Double-Crested Cormorant Colony Effects On Soil Chemistry, Vegetation Structure And Avian Diversity, Leah Moran Veum, Brian S. Dorr, Katie C. Hanson-Dorr, R.J. Moore, Scott A. Rush
United States Department of Agriculture Wildlife Services: Staff Publications
Effects of Double-crested Cormorants (Phalacrocorax auritus) on vegetation, soil chemistry and tree health have been documented from their breeding colonies in the northern breeding grounds of Canada and the United States (U.S.) but not for areas within the southeastern United States where breeding activity is relatively novel. We compared vegetation and tree metrics such as structure diversity, and soil chemistry among colony islands, uninhabited islands, and abandoned colony islands within Guntersville Reservoir, a temperate forest ecosystem. Avian diversity and community structure were also quantified on these islands. Concentrations of potassium (K), phosphorus (P) and nitrate (NO3 −) in soil were …
Abundance Estimation From Multiple Data Types For Groupliving Animals: An Example Using Dhole (Cuon Alpinus),
2019
King Mongkut's University of Technology
Abundance Estimation From Multiple Data Types For Groupliving Animals: An Example Using Dhole (Cuon Alpinus), Dusit Ngoprasert, George A. Gale, Andrew J. Tyre
School of Natural Resources: Faculty Publications
Large carnivores are declining globally and require baseline population estimates for management, however large-scale population estimation is problematic for species without unique natural marks. We used camera trap records of dhole Cuon alpinus, a group-living species, from three national parks in Thailand as a case study in which we develop integrated likelihood models to estimate abundance incorporating two different data sets, count data and detection/non-detection data. We further investigated relative biases of the models using different proportions of data with lower versus higher quality and assessed parameter identifiability. The simulations indicated that the relative bias on average across 24 tested …
Environmentally Responsible Land Use, Spring/Summer 2010, Issue 22,
2019
University of Louisville
Environmentally Responsible Land Use, Spring/Summer 2010, Issue 22
Sustain Magazine
No abstract provided.
Sustainable Communities, Fall/Winter 2010, Issue 21,
2019
University of Louisville
Sustainable Communities, Fall/Winter 2010, Issue 21
Sustain Magazine
No abstract provided.
Sustainable Building, Spring/Summer 2009, Issue 20,
2019
University of Louisville
Sustainable Building, Spring/Summer 2009, Issue 20
Sustain Magazine
No abstract provided.
Environmental History, Fall/Winter 2009, Issue 19,
2019
University of Louisville
Environmental History, Fall/Winter 2009, Issue 19
Sustain Magazine
No abstract provided.
Student Research, Spring/Summer 2008, Issue 18,
2019
University of Louisville
Evolving Pollution Prevention, Fall/Winter 2008, Issue 17,
2019
University of Louisville
Evolving Pollution Prevention, Fall/Winter 2008, Issue 17
Sustain Magazine
No abstract provided.
Climate Change, Spring/Summer 2007, Issue 16,
2019
University of Louisville
Our Energy Future, Fall/Winter 2007, Issue 15,
2019
University of Louisville
Land Conservation, Spring/Summer 2006, Issue 14,
2019
University of Louisville
Land Conservation, Spring/Summer 2006, Issue 14
Sustain Magazine
No abstract provided.
Pollution And Heart Disease, Fall/Winter 2006, Issue 13,
2019
University of Louisville
Pollution And Heart Disease, Fall/Winter 2006, Issue 13
Sustain Magazine
No abstract provided.
Green Cities, Spring/Summer 2005, Issue 12,
2019
University of Louisville
Global Sustainability, Fall/Winter 2005, Issue 11,
2019
University of Louisville
Global Sustainability, Fall/Winter 2005, Issue 11
Sustain Magazine
No abstract provided.
