Robert W Mannan

Interests

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Courses

Scholarly Contributions

Chapters

• Mannan, R. W., & Steidl, R. J. (2017). Demography of Raptor Populations in Urban Environments. In Urban Raptors. Island Press.
• Mannan, R. W., & Steidl, R. J. (2013). Habitat. In Wildlife Management and Conservation(pp 229-245). The John Hopkins University Press.
• Mannan, R. W., & Steidl, R. J. (2013). Habitat. In Wildlife management: Contemporary principles and practices. John Hopkins University Press.

Journals/Publications

• Mannan, R. W., Taylor, M., U'Ren, J., Garber, N., Gallery, R., & Arnold, E. (2019). Age-related variation in the oral microbiome of urban Cooper's hawks (Accipiter cooperii). BMC Microbiology.
• Boggie, M. A., & Mannan, R. W. (2015). Perennial pair bonds in an Accipiter: a behavioral response to an urbanized landscape?. Journal of Raptor Research, 49(4), 458-470.
• Boggie, M. A., Mannan, R. W., & Wissler, C. A. (2014). Perennial Pair Bonds in an Accipiter: A Response to an Urbanized Landscape?. Journal of Raptor Research.
• Greeney, H. F., Menenses, M. R., Hamilton, C. E., Lichter-Marck, E., Mannan, R. W., Snyder, N., Snyder, H., Wethington, S. M., & Dyer, L. A. (2015). Trait-mediated trophic cascade creates enemy-free space for nesting hummingbirds. Science Advances, 1:e1500310, 1-5.
• Boggie, M. A., & Mannan, R. W. (2014). Examining seasonal patterns of space use to gauge how an accipiter responds to urbanization. Landscape and Urban Planning, 124, 34-42.
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  Abstract: As humans continue to rapidly develop natural landscapes, understanding how urbanization affects native species becomes increasingly important. Exploring how animals use urban environments can help assess how urban development may affect them, especially when compared to their use of non-urban environments. We examined seasonal patterns of habitat selection and space use of adult, male Cooper's hawks (Accipiter cooperii) in an urban environment to evaluate how this native resident responds to urbanization. Patterns of space use and habitat selection were uniform in both the breeding and non-breeding seasons. Average size of home ranges was among the smallest reported for the species, and did not vary in the breeding and non-breeding seasons. Hawks selected land-use types containing large non-native trees and tracts of remnant native vegetation that supported abundant prey species, in both the breeding and non-breeding seasons. Consistency in habitat selection and space use across seasons, small space requirements, and high nesting density likely reflects the high productivity of this urban environment. Comparison of patterns of space use and demographic attributes to Cooper's hawks inhabiting natural environments suggests that habitat for Cooper's hawks in this urban environment may be of higher quality than in some undeveloped areas as a result of human landscaping activities. Although most native species are negatively impacted by urbanization, some species, such as Cooper's hawks, appear to benefit from the changes wrought by development. Investigating how anthropogenic activities influence space use of native species can help managers assess the quality of urban environments as habitat. © 2014 Elsevier B.V.
• Urban, E. H., & Mannan, R. W. (2014). The potential role of oral pH in the persistence of Trichomonas gallinae in Cooper's hawks (Accipiter cooperii). Journal of Wildlife Diseases.
• McCaffrey, R. E., & Mannan, R. W. (2012). How scale influences birds' responses to habitat features in urban residential areas. Landscape and Urban Planning, 105(3), 274-280.
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  Abstract: How individual species respond to urbanization depends on both the specific habitat features they require as well as the spatial scale at which they respond to habitat changes. Urban areas represent both a unique challenge and opportunity for the conservation of native avian species because, at smaller scales, the actions of individual homeowners may be critical to maintaining populations of certain species, whereas other species may require broader scale conservation measures. Understanding how scale, land ownership, and habitat features interact in influencing presence of native birds is crucial to developing sound conservation and land use strategies in urban and developing areas. We studied the relationships between ten native bird species and a suite of human-influenced habitat features at two spatial scales, individual properties and neighborhoods, to determine which factors and scales were most important to each species. At the smaller scale, variables associated with native vegetation were important for eight species, whereas the amount of open space was positively associated with six species at the larger scale. Three species were most strongly associated with habitat features at the individual property scale, and two with features at the neighborhood scale. The remaining five species were influenced by habitat features at both scales, and showed strong cross-scale interactions. Our results suggest that the presence of some native species in urban areas can be influenced by the actions of individual homeowners, whereas the presence of other species will require broader scale approaches involving neighborhood groups and city managers. © 2012 Elsevier B.V.
• McCaffrey, R., & Mannan, R. (2012). How scale influences birds' responses to habitat features in urban residential areas. Landscape and urban planning, 105, 274-280.
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  Accepted for publication in 2011

Presentations

• Mannan, R. W., Zylstra, E., & Steidl, R. (2018, November 2018). Density dependent effects on survival in an urban-nesting population of Cooper's hawks. Raptor Research Foundation Annual Meeting,. Kruger National Park, South Africa: Raptor Research Foundation.
• Steidl, R. J., Mannan, R. W., & Zylstra, E. R. (2018, November). Density dependent effects on survival in an urban-nesting population of Cooper’s hawks. Annual Meeting of the Raptor Research Foundation. Kruger National Park, South Africa: Raptor Research Foundation.
• Mannan, R. W. (2015, 17 October). Urban Cooper's Hawks. Annual Meeting of the Raptor Research Foundation. Cape May. New Jersey: Raptor Research Foundation.
• Mannan, R. W. (2016, 17 October). Population dynamics of urban-nesting raptors. Annual Meeting of the Raptor Research Foundation. Cape May, New Jersey.
• Mannan, R. W. (2016, 18 February). Urban Raptors. Retired Physicians Monthly Meeting. Tucson Country Club.
• Mannan, R. W. (2013, Spring). Tucson Electrip Power Compnay's Raptor Protection Program. Public Presentation.
• Mannan, R. W. (2012). A long-term study of urban-nesting Cooper's hawks; perspectives on change. Seminar series in the Department of Fisheries and Wildlife, Oregon State University. Corvallis, OR.
• Mannan, R. W. (2012). A long-term study of urban-nesting Cooper's hawks; perspectives on change. Seminar series in the Forestry Department, Northern Arizona University. Flagstaff, AZ.
• Mannan, R. W. (2012). Great horned owls as predatory birds. Copper Creek Elementary School. Tucson, AZ.
• Mannan, R. W. (2012). Predatory Birds in Urban Environments. Welcome Wagon of Tucson. Tucson, AZ.
• Mannan, R. W. (2012). Predatory Birds in Urban Environments. Wild Bird Store open house. Tucson, AZ.
• Mannan, R. W. (2012). Recruitment of rehabilitated versus non-rehabilitated Cooper's hawks. Rehabilitators Symposium, Arizona Game and Fish Department. Phoenix, AZ.
• Mannan, R. W. (2012). Tucson Birds of Prey: Living the city life. Living With Nature Series, Tucson Audubon Society. Tucson, AZ.
• Mannan, R. W. (2012, March). Capturing and banding hawks and owls. Tucson Audubon Society Workshop. Tucson, AZ: Tucson Audubon Society.
• Mannan, R. W., & Boggie, M. (2012, August). Spatial ecology and mate interactions of Cooper's hawks in the non-breeding season. 5th North American Ornithological Conference. Vancouver, BC.
• Mannan, R. W., & Urban, L. (2012, August). The role of oropharyngeal pH in the persistence of Trichomonas gallinae in Cooper's hawks. 5th North American Ornithological Conference. Vancouver, BC.