Species Dynamics and Restoration in Rare Serpentine Grasslands under Global Change
| dc.contributor.advisor | Hallett, Lauren | |
| dc.contributor.author | Hernandez, Eliza | |
| dc.date.accessioned | 2021-11-23T15:11:05Z | |
| dc.date.available | 2021-11-23T15:11:05Z | |
| dc.date.issued | 2021-11-23 | |
| dc.description.abstract | Conserving rare serpentine grasslands is a challenge with ongoing nitrogen deposition. Nutrient-poor patches are fertilized by nitrogen-rich smog and exotic grasses can rapidly spread. Water resources are also being altered in this system via climate change. Using a greenhouse experiment and a long-term survey, I test how rainfall variability interacts with nitrogen deposition to shift native patches to an exotic state. We found that wetter years interact with intermediate nitrogen to drive invasion. Restoring exotic-dominated patches is difficult once an established layer of litter reasserts exotic dominance. Capitalizing on a long-term dataset, I test burning and grazing as restoration tools to promote native forb recovery. I found that a burn and continual grazing is effective in controlling exotic cover and litter levels to restore invaded patches to a native state. As global change continues to reinforce exotic dominance, continual and well-timed management is necessary to maintain native serpentine grasslands.This thesis includes both previously published/unpublished and co-authored material. | en_US |
| dc.identifier.uri | https://hdl.handle.net/1794/26870 | |
| dc.language.iso | en_US | |
| dc.publisher | University of Oregon | |
| dc.rights | All Rights Reserved. | |
| dc.title | Species Dynamics and Restoration in Rare Serpentine Grasslands under Global Change | |
| dc.type | Electronic Thesis or Dissertation | |
| thesis.degree.discipline | Environmental Studies Program | |
| thesis.degree.grantor | University of Oregon | |
| thesis.degree.level | masters | |
| thesis.degree.name | M.S. |
Files
Original bundle
1 - 1 of 1
Loading...
- Name:
- Hernandez_oregon_0171N_13122.pdf
- Size:
- 2.56 MB
- Format:
- Adobe Portable Document Format