Dr. Michala Phillips is an ecologist studying how biotic interactions, disturbance and global change mediate community assembly of plants and soil microbes to affect emergent ecosystem functions.
Michala is passionate about using basic science to create knowledge that can be used to support sustainable restoration and management needs of ecosystems. She integrates community, ecosystem, plant and microbial ecology in her research by using statistical modeling to combine data from a diversity of approaches (field, greenhouse, sensor networks, soil chemistry and molecular biology techniques). Her aim is to build a better understanding of community assembly and ecosystem processes following disturbances to inform restoration and adaptive land management efforts. Towards this goal, Michala works closely with a broad range of collaborators, including federal agency partners, to create research questions, develop projects, and communicate the knowledge gained from research. Some of her primary research interests are understanding how fire, atmospheric nitrogen deposition, and climate change catalyze state changes, such as invasion by exotic plants, with the ultimate goal of developing innovative management solutions.
Education and Certifications
Ph.D. Plant Biology, Plant Ecology emphasis - University of California, Riverside. Dissertation: “Invasion in the Chaparral: Uncovering Soil Microbial and Plant Physiological Mechanisms,” 2019.
M.S. Environmental Science, American University, College of Arts and Sciences, Washington, D.C., 2013.
B.A. in Environmental Studies, American University, College of Arts and Sciences, Washington, D.C., 2012.
Honors and Awards
Fellowships
NSF Postdoctoral Fellowship in Biology - 2021
USDA-NIFA Postdoctoral Fellowship - 2021
Science and Products
Climatic and Ecological Scenarios to Guide Development of a Spatial Resist-Accept-Direct Portfolio at Nāpuʻu, Hawaiʻi
Climate smart restoration: Establishing baselines and developing adaptive management approaches
Post Fire Restoration in Hawai‘i Volcanoes National Park
Diverse data to improve Southwest fire forecasts: Joining novel remote sensing, post-fire dynamics, and intra-annual precipitation patterns
Developing Planting Designs for Forest Restoration
Determining Successful Management and Restoration Strategies for Pinyon-Juniper Communities in the Face of Changing Climate and Wildfire
Ecological property data and experimental lab incubation results from a long-term nitrogen deposition simulation experiment in three semi-arid grasslands, Arches National Park, Utah, USA, 2013-2019
Restoration research actions to address rapid change in drylands: Insights from the Colorado Plateau
Mentoring is more than a mentor
Biogeochemical and ecosystem properties in three adjacent semiarid grasslands are resistant to nitrogen deposition but sensitive to edaphic variability
Biocrusts mediate a new mechanism for land degradation under a changing climate
Resistance, resilience, and recovery of dryland soil bacterial communities across multiple disturbances
Muted responses to chronic experimental nitrogen deposition on the Colorado Plateau
Experimental warming changes phenology and shortens growing season of the dominant invasive plant Bromus tectorum (cheatgrass)
Non-USGS Publications**
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Science and Products
- Science
Climatic and Ecological Scenarios to Guide Development of a Spatial Resist-Accept-Direct Portfolio at Nāpuʻu, Hawaiʻi
Climate change and invasive species are transforming ecosystems. The Resist-Accept-Direct (RAD) framework organizes management objectives into those that seek to Resist change and maintain historical ecological communities, those that Accept some or all aspects of ecological transformation, and those that Direct an ecological community to a preferred state. We are evaluating risks posed by climate...Climate smart restoration: Establishing baselines and developing adaptive management approaches
In Hawaiʻi, a large percentage of historically forested areas have been lost, driven in part by changes in land use, such as the conversion of forests into pastures for livestock. This transformation has not only resulted in widespread loss of native biodiversity and important ecosystem functions but has also increased the risk of fire on the landscape. Though targeted restoration efforts have the...Post Fire Restoration in Hawai‘i Volcanoes National Park
We are studying post-fire forest regeneration in montane habitats within Hawaiʻi Volcanoes National Park. By testing out different restoration strategies, as well as links between grass cover and fire, we hope to increase restored forest fire resistance and resilience.Diverse data to improve Southwest fire forecasts: Joining novel remote sensing, post-fire dynamics, and intra-annual precipitation patterns
Fire has increased dramatically across the western U.S. and these increases are expected to continue. With this reality, it is critical that we improve our ability to forecast the timing, extent, and intensity of fire to provide resource managers and policy makers the information needed for effective decisions. For example, an advanced, spatially-explicit prediction of the upcoming fire season wouDeveloping Planting Designs for Forest Restoration
We are testing different planting mixtures and densities to refine restoration efforts in the Hakalau Forest National Wildlife Refuge.Determining Successful Management and Restoration Strategies for Pinyon-Juniper Communities in the Face of Changing Climate and Wildfire
Pinyon-juniper woodlands are important ecosystems in the western U.S. that provide numerous critical environmental, economic, and cultural benefits. For example, pinyon pines are a significant cultural resource for multiple Native American Tribes and provide necessary habitat for plants and wildlife (including at risk species, such as the pinyon-jay). Despite their importance, stress put on pinyon - Data
Ecological property data and experimental lab incubation results from a long-term nitrogen deposition simulation experiment in three semi-arid grasslands, Arches National Park, Utah, USA, 2013-2019
These data were compiled to understand the responses of dryland ecosystem properties to long-term simulated atmospheric nitrogen deposition. Objective(s) of our study were to uncover any changes in soil biogeochemistry and ecosystem properties to long-term nitrogen amendments. These data represent ecosystem property data compiled over the nine-year history of a nitrogen deposition simulation exper - Publications
Restoration research actions to address rapid change in drylands: Insights from the Colorado Plateau
The rapid intensification of ecological extremes in response to climate change and human land use is perhaps nowhere more apparent than in drylands, including the semiarid region of the Colorado Plateau in the southwestern United States. Here, we describe research directions to aid in the restoration of Colorado Plateau ecosystems during the UN Decade on Ecosystem Restoration (2021–2030) that 1) aAuthorsKristina E. Young, Brooke Bossert Osborne, Michala Lee Phillips, Daniel E. WinklerMentoring is more than a mentor
Recent work has highlighted the substantial positive impact of multi-dimensional mentoring, particularly a mentoring network, in one’s professional development and overall well-being (SAGE Open 2017; doi.org/10.1177/2158244017710288) (Nat Comm 2022; doi.org/10.1038/s41467-022-28667-0). The Women in Soil Ecology (WiSE) network (https://womeninsoilecology.github.io) was born out of a desire to develAuthorsCourtney G. Collins, Michala Lee Phillips, Kendall Beals, Lydia Baliey, Joy O'Brien, Ishwora Dhungana, Sierra JechBiogeochemical and ecosystem properties in three adjacent semiarid grasslands are resistant to nitrogen deposition but sensitive to edaphic variability
Drylands have low nitrogen stocks and are predicted to be sensitive to modest increases in reactive nitrogen availability, but direct evidence that atmospheric nitrogen deposition will have sustained effects on dryland ecosystems is sparse and conflicting.We used three long-running in situ nitrogen deposition simulation experiments and a complementary laboratory incubation experiment to address fuAuthorsBrooke Bossert Osborne, Carla M Roybal, Robin H. Reibold, Christopher D Collier, Erika L. Geiger, Michala Lee Phillips, Michael N Weintraub, Sasha C. ReedBiocrusts mediate a new mechanism for land degradation under a changing climate
Global concerns for desertification have focused on the slow recovery of extensive and expanding drylands following disturbance, which may be exacerbated by climate change. Biological soil crusts (biocrusts) are photosynthetic soil communities found in drylands worldwide, which are central to the stability and resilience of dryland ecosystems, but vulnerable to global change. Here we use multipleAuthorsMichala Lee Phillips, Brandon E McNellis, Armin J. Howell, Cara Marie Lauria, Jayne Belnap, Sasha C. ReedResistance, resilience, and recovery of dryland soil bacterial communities across multiple disturbances
Dryland ecosystems are sensitive to perturbations and generally slow to recover post disturbance. The microorganisms residing in dryland soils are especially important as they contribute to soil structure and nutrient cycling. Disturbance can have particularly strong effects on dryland soil structure and function, yet the natural resistance and recovery of the microbial components of dryland soilsAuthorsBlaire Steven, Michala Lee Phillips, Jayne Belnap, La Verne Gallegos-Graves, Cheryl R. Kuske, Sasha C. ReedMuted responses to chronic experimental nitrogen deposition on the Colorado Plateau
Anthropogenic nitrogen (N) deposition is significantly altering both community structure and ecosystem processes in terrestrial ecosystems across the globe. However, our understanding of the consequences of N deposition in dryland systems remains relatively poor, despite evidence that drylands may be particularly vulnerable to increasing N inputs. In this study, we investigated the influence of 7AuthorsMichala Lee Phillips, Daniel E. Winkler, Robin H. Reibold, Brooke Bossert Osborne, Sasha C. ReedExperimental warming changes phenology and shortens growing season of the dominant invasive plant Bromus tectorum (cheatgrass)
Bromus tectorum (cheatgrass) has successfully invaded and established throughout the western United States. Bromus tectorum grows early in the season and this early growth allows B. tectorum to outcompete native species, which has led to dramatic shifts in ecosystem function and plant community composition after B. tectorum invades. If the phenology of native species is unable to track changing clAuthorsArmin J. Howell, Daniel E. Winkler, Michala Lee Phillips, Brandon McNellis, Sasha C. ReedNon-USGS Publications**
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.