Index Catalog // ScholarsArchive@OSU

Independent effects of habitat loss and fragmentation on pollination : tropical forest fragmentation alters hummingbird movements and pollination dynamics

Creator:: Hadley, Adam S.
Abstract:: A growing body of work reveals that animal-mediated pollination is negatively affected by anthropogenic disturbance. Landscape-scale disturbance results in two often inter-related processes: (1) habitat loss, and (2) disruptions of habitat configuration (i.e. fragmentation). Understanding the relative effects of such processes is critical in designing effective management strategies to limit...
Resource Type:: Dissertation
Full Text:: - Hadley_Dissertation_17Sept2012_no_landscape.docx ! AN ABSTRACT OF THE DISSERTATION OF Adam S. Hadley for the degree of Doctor of

How sweet is the land? Modeling caloric landscapes for tropical hummingbirds

Creator:: Birkett, Christina Nozomi and Birkett, Nozomi Fukui
Abstract:: Pollination is a critical ecosystem function for sustaining biodiversity. However, pollinators and the services they provide are threatened by landscape-altering anthropogenic activities across the globe. Habitat loss and fragmentation, introduction of invasive species, chemical use, and urbanization have been shown to impact pollination. Pollinator foraging behavior is thought to be...
Resource Type:: Undergraduate Thesis
Full Text:: landscapes for tropical hummingbirds Abstract Approved: Adam S. Hadley

How sweet is the land? Modeling caloric landscapes for tropical hummingbirds

Creator:: Birkett, Christina Nozomi and Birkett, Nozomi Fukui
Abstract:: Pollination is a critical ecosystem function for sustaining biodiversity. However, pollinators and the services they provide are threatened by landscape-altering anthropogenic activities across the globe. Habitat loss and fragmentation, introduction of invasive species, chemical use, and urbanization have been shown to impact pollination. Pollinator foraging behavior is thought to be...
Resource Type:: Presentation

Functional connectivity experiments reflect routine movement behavior of a tropical hummingbird species

Creator:: Volpe, Noelia L., Hadley, Adam S., Robinson, W. Douglas, and Betts, Matthew G.
Abstract:: Translocation experiments, in which researchers displace animals and then monitor their movements to return home, are commonly used as tools to assess functional connectivity of fragmented landscapes. Such experiments are purported to have important advantages of being time efficient and of standardizing ‘‘motivation’’ to move across individuals. Yet, we lack...
Resource Type:: Article

SpaceLab, an N-Body Particle-Particle Ballistic Collision Simulation Tool with Applications in Celestial Body Dynamics

Creator:: Guidos, Job
Abstract:: This thesis conveys the key technical features and scientific applications of a particle-particle ballistic simulation tool (SpaceLab) as well as a high level overview of experiments it was designed for and executed on. SpaceLab simulates spherical particle interactions under any combination of self-gravity, sliding friction, rolling friction, Van-Der-Waals (VDW) cohesion...
Resource Type:: Masters Thesis

Can Pollination Networks Withstand Species Loss? An Examination of Plant–Hummingbird Interactions and Their Responses to Experimental Removal of a Flowering Plant Species

Creator:: Leimberger, Kara G.
Abstract:: Global environmental change is causing local extinctions of species. When species depend on one another, as in the mutualistic relationship between plants and pollinators, loss of one interaction partner may cause cascading effects within the community – such as additional extinctions and reduced pollination services. Network theory provides a way...
Resource Type:: Dissertation
Full Text:: designed by Matthew G. Betts, Adam S. Hadley, F. Andrew Jones, and W. John Kress. Matthew G. Betts, my

Beating Modes in Protostellar Disks

Creator:: Varga, Attila V.
Abstract:: Computational simulations of disks are becoming an important tool to predict the the evolution of protostars and disks to better understand the formation of planets. Past research has shown that the evolution of disks and their protostar can be altered through the interaction between gravity and hydrodynamic instabilities. We perform...
Resource Type:: Undergraduate Thesis
Full Text:: for the degree of Bachelor of Science in Physics Advisor Dr. Kathryn Hadley June 6, 2018

Acoustic classification of multiple simultaneous bird species: A multi-instance multi-label approach

Creator:: Briggs, Forrest, Lakshminarayanan, Balaji, Neal, Lawrence, Fern, Xiaoli Z., Raich, Raviv, Hadley, Sarah J. K., Hadley, Adam S., and Betts, Matthew G.
Abstract:: Although field-collected recordings typically contain multiple simultaneously vocalizing birds of different species, acoustic species classification in this setting has received little study so far. This work formulates the problem of classifying the set of species present in an audio recording using the multi-instance multi-label (MIML) framework for machine learning, and...
Resource Type:: Article
Full Text:: University, Corvallis, Oregon 97331 Sarah J. K. Hadley, Adam S. Hadley, and Matthew G. Betts Department of

Tropical forest fragmentation limits pollination of a keystone understory herb

Creator:: Hadley, Adam S., Frey, Sarah J. K., Robinson, W. Douglas, Kress, W. John, and Betts, Matthew G.
Abstract:: Loss of native vegetation cover is thought to be a major driver of declines in pollination success worldwide. However, it is not well known whether reducing the fragmentation of remaining vegetation can ameliorate these negative effects. We tested the independent effects of composition vs. configuration on the reproductive success of...
Resource Type:: Article
Full Text:: Tropical forest fragmentation limits pollination of a keystone understory herb ADAM S. HADLEY,1,4 SARAH J

Fighting tradition : Hemingway’s Nick Adams and shell shock

Creator:: McGrath, Cole P.
Abstract:: In his Nick Adams stories, Ernest Hemingway traces the life of a single man as he moves from boyhood to adolescence to adulthood to fatherhood. From the beginning of Nick Adams life, it is clear that he does not fit into the role of the traditional hero. In addition, Nick...
Resource Type:: Masters Thesis
Full Text:: from boyhood to adolescence to adulthood to fatherhood. From the beginning of Nick Adams life, it is

ScholarsArchive@OSU

Independent effects of habitat loss and fragmentation on pollination : tropical forest fragmentation alters hummingbird movements and pollination dynamics

How sweet is the land? Modeling caloric landscapes for tropical hummingbirds

How sweet is the land? Modeling caloric landscapes for tropical hummingbirds

Functional connectivity experiments reflect routine movement behavior of a tropical hummingbird species

SpaceLab, an N-Body Particle-Particle Ballistic Collision Simulation Tool with Applications in Celestial Body Dynamics

Can Pollination Networks Withstand Species Loss? An Examination of Plant–Hummingbird Interactions and Their Responses to Experimental Removal of a Flowering Plant Species

Beating Modes in Protostellar Disks

Acoustic classification of multiple simultaneous bird species: A multi-instance multi-label approach

Tropical forest fragmentation limits pollination of a keystone understory herb

Fighting tradition : Hemingway’s Nick Adams and shell shock

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