86 research outputs found
Appendix 4 - Supplemental material for New Mining Concessions Could Severely Decrease Biodiversity and Ecosystem Services in Ecuador
No full textSupplemental material, Appendix 4 for New Mining Concessions Could Severely Decrease Biodiversity and Ecosystem Services in Ecuador by Bitty A. Roy, Martin Zorrilla, Lorena Endara, Dan C. Thomas, Roo Vandegrift, Jesse M. Rubenstein, Tobias Policha, Blanca Ríos-Touma and Morley Read in Tropical Conservation Science</p
Appendix 3 - Supplemental material for New Mining Concessions Could Severely Decrease Biodiversity and Ecosystem Services in Ecuador
No full textSupplemental material, Appendix 3 for New Mining Concessions Could Severely Decrease Biodiversity and Ecosystem Services in Ecuador by Bitty A. Roy, Martin Zorrilla, Lorena Endara, Dan C. Thomas, Roo Vandegrift, Jesse M. Rubenstein, Tobias Policha, Blanca Ríos-Touma and Morley Read in Tropical Conservation Science</p
Appendix 6 - Supplemental material for New Mining Concessions Could Severely Decrease Biodiversity and Ecosystem Services in Ecuador
No full textSupplemental material, Appendix 6 for New Mining Concessions Could Severely Decrease Biodiversity and Ecosystem Services in Ecuador by Bitty A. Roy, Martin Zorrilla, Lorena Endara, Dan C. Thomas, Roo Vandegrift, Jesse M. Rubenstein, Tobias Policha, Blanca Ríos-Touma and Morley Read in Tropical Conservation Science</p
Appendix 5 - Supplemental material for New Mining Concessions Could Severely Decrease Biodiversity and Ecosystem Services in Ecuador
No full textSupplemental material, Appendix 5 for New Mining Concessions Could Severely Decrease Biodiversity and Ecosystem Services in Ecuador by Bitty A. Roy, Martin Zorrilla, Lorena Endara, Dan C. Thomas, Roo Vandegrift, Jesse M. Rubenstein, Tobias Policha, Blanca Ríos-Touma and Morley Read in Tropical Conservation Science</p
Appendix 1 - Supplemental material for New Mining Concessions Could Severely Decrease Biodiversity and Ecosystem Services in Ecuador
No full textSupplemental material, Appendix 1 for New Mining Concessions Could Severely Decrease Biodiversity and Ecosystem Services in Ecuador by Bitty A. Roy, Martin Zorrilla, Lorena Endara, Dan C. Thomas, Roo Vandegrift, Jesse M. Rubenstein, Tobias Policha, Blanca Ríos-Touma and Morley Read in Tropical Conservation Science</p
Appendix 2 - Supplemental material for New Mining Concessions Could Severely Decrease Biodiversity and Ecosystem Services in Ecuador
No full textSupplemental material, Appendix 2 for New Mining Concessions Could Severely Decrease Biodiversity and Ecosystem Services in Ecuador by Bitty A. Roy, Martin Zorrilla, Lorena Endara, Dan C. Thomas, Roo Vandegrift, Jesse M. Rubenstein, Tobias Policha, Blanca Ríos-Touma and Morley Read in Tropical Conservation Science</p
Litter decomposition in Oregon prairies depends on fire
No full text32 pagesPrairies in the PNW were historically maintained by Indigenous burning practices, which favored some of their food plants and kept the prairies from becoming forested. Current prairie restoration practices are returning to the use of fire, but the consequences of fire for decomposition are unknown in these prairies. To examine decomposition, litter from both burned and unburned prairies was put in decomposition bags, and the bags were removed and weighed at three, six, and nine months. Half of all litter samples were also sterilized to remove their native fungal endophytes to determine whether that reduced decomposition. In general, litter from burned prairies had greater decomposition than litter from unburned prairies. Sterilized litter also had greater decomposition than unsterilized. This information can aid prairie managers as they continue to use fire to manage Oregon prairies
Drivers of endophyte communities in Pacific Northwest prairies
No full textPrairies of the Pacific Northwest are threatened systems, with only ~2% of historic land remaining. The combined risk of global climate change and land use change make these systems a high conservation priority. However, little attention has been paid to the microbiota. Fungal endophytes are ubiquitous in plants and are important in ecosystem functioning and host dynamics. To understand fungal community assembly, we used high-throughput sequencing to investigate the composition of fungal foliar endophyte communities in two native, cool-season (C3) bunchgrasses along a natural latitudinal gradient. We quantified the importance of host, host traits, climate, edaphic factors, and spatial distance in microbial community composition. We found that spatial distance was the strongest predictors of endophyte community, while host traits (e.g., plant size, density) and abiotic environment were less important for community structure. These findings underline the importance of dispersal in shaping microbial communities.
This thesis includes previously unpublished, co-authored material
Effects of Fire on Soil Fungal Communities and the Environmental Drivers of Community Variation in Prairies of the Pacific Northwest
No full textPrescribed burning is a common management tool used in restoring prairies of the Pacific Northwest, but the effects of fire on soil fungal community composition is unknown. We collected soil from prairies in Washington and Oregon that included a fire chronosequence: burned within one month, within two years, and not burned in approximately 150 years. We analyzed soil fungal community composition differences between regions and among treatments, and we also examined how fire affects fungal functional groups. In addition, we used variation partitioning to determine the relative contribution of abiotic, biotic, spatial, and burning factors to the variation observed in these soil fungal communities. Soil fungal communities were distinct by region, and there were small but significant effects of burning. While we did not observe any significant differences in relative functional group abundances with burning, there were community compositional differences at finer taxonomic scales.
This dissertation includes unpublished coauthored material.10000-01-0
Microclimate and Phenology at the H.J. Andrews Experimental Forest
No full textSpring plant phenology is often used as an indicator of a community response to climate change. Remote data and low-resolution climate models are typically used to predict phenology across a landscape; however, this tends to miss the nuances of microclimate, especially in a mountainous area with heterogeneous topography. I investigated how inter-annual variability in regional climate affects the distribution of microclimates (i.e., areas <100m2) and spring plant phenology across a 6400-hectare watershed within the Western Cascades in Oregon. Additionally, I created species-specific models of bud break at the microclimate scale, that could then be applied across a wider landscape. I found that years with warm winters, few storms and low snowpack have a homogenizing effect on microclimate and spring phenology events, and that bud break models developed at a local scale can be effectively applied across a broader landscape.
This thesis includes previously unpublished coauthored material
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