Impact of Habitat Heterogeneity and Structural Complexity on Nesting Success
dc.contributor.author | Vigneau, Caitlin | |
dc.contributor.advisor | Perfecto, Ivette | |
dc.date.accessioned | 2023-12-11T21:49:37Z | |
dc.date.issued | 2023-12 | |
dc.date.submitted | 2023-12 | |
dc.identifier.uri | https://hdl.handle.net/2027.42/191702 | |
dc.description.abstract | Agricultural intensification has been driving declines in avian biodiversity across the globe, however, research has shown that human-managed agriculture lands can provide habitat and resources to avifauna in addition to supporting sustainable avian populations. Coffee agroforestry has been spotlighted as an agroecological system that supports the abundance and richness of avifauna, though there is limited research on whether these systems support breeding populations and how management decisions impact avian nest success. This study seeks to fill gaps in the literature by comparing avian reproducible success in a shaded coffee farm and a neighboring sun-grown coffee farm. It investigates whether differences in habitat heterogeneity impact nesting success by measuring canopy cover, and vertical structure, and constructing a complexity index. It was hypothesized that the less intensely managed shaded coffee agroforestry system would have a higher probability of daily nest success than the more intensely managed sun-grown coffee. Results from this study found that nests in the agroforestry system (n=25) had a 5% higher daily nest survival rate than nests found in the sun-grown coffee system (n=18). Additionally, results suggest a negative correlation between vertical structure surrounding the nest and the success of nests, implying a trade-off between nest concealment and risk of failure. | en_US |
dc.language.iso | en_US | en_US |
dc.subject | agroforestry | en_US |
dc.subject | coffee | en_US |
dc.subject | habitat management | en_US |
dc.title | Impact of Habitat Heterogeneity and Structural Complexity on Nesting Success | en_US |
dc.type | Thesis | en_US |
dc.description.thesisdegreename | Master of Science | en_US |
dc.description.thesisdegreediscipline | School for Environment and Sustainability | en_US |
dc.description.thesisdegreegrantor | University of Michigan | en_US |
dc.contributor.committeemember | Weeks, Brian | |
dc.identifier.uniqname | cvigneau | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/191702/1/Vigneau_Caitlin_Thesis.pdf | |
dc.identifier.doi | https://dx.doi.org/10.7302/21882 | |
dc.working.doi | 10.7302/21882 | en_US |
dc.owningcollname | Dissertations and Theses (Ph.D. and Master's) |
Files in this item
Remediation of Harmful Language
The University of Michigan Library aims to describe library materials in a way that respects the people and communities who create, use, and are represented in our collections. Report harmful or offensive language in catalog records, finding aids, or elsewhere in our collections anonymously through our metadata feedback form. More information at Remediation of Harmful Language.
Accessibility
If you are unable to use this file in its current format, please select the Contact Us link and we can modify it to make it more accessible to you.