Advisor: Ellen Wohl
Previous Education: Colorado State University (Master of Science, Geosciences, 2015); University of Washington (B.S. Earth and Space Sciences, 2013)
About Dan: I grew up in the Washington Cascades, hiking, climbing, and skiing from a young age. I enjoy spending time in the mountains and applying my outdoor skills and passion to my research. My love of geomorphology comes from using field observations to make inferences about the nature of a landscape, the processes that are causing its evolution, and what it may look like in the future. Basically, I spend a lot of time around rivers, and that drives my curiosity to figure out how they work.
Research: Longitudinal Patterns of Organic Carbon Storage in Mountainous River Networks
My dissertation research focuses on 3 major components. First, I will be quantifying the downstream patterns of organic carbon (OC) storage in soil and wood within an entire mountain river basin. Second, I will be comparing the carbon dynamics of very different mountain river basins (2 in the Olympic Mountains of WA, 1 in the Cascade Mountains of WA, and 1 in the Wind River Range of WY) to understand the relative sensitivity of the mountain carbon stock to future changes in factors such as climate. Third, I will be comparing the carbon dynamics of one protected, unlogged basin in Olympic National Park with another basin just outside the Park that has experienced widespread clearcutting for over a century. This will provide the first comprehensive understanding of how logging affects carbon storage in mountain basins. The broad-scale objective of this work is to better constrain the mountain carbon budget and provide important data to forest managers to help them maximize carbon storage in forests in the context of anthropogenic climate change.
Geomorphic and Lithologic Controls on Canyon Morphology, Sediment Dynamics, and Riparian Abundance: Understanding how Humans Impact Canyon Ecosystems
In Spain and across the western U.S., I’ve been working to understand the dynamic relationships between bedrock characteristics, like rock strength and fracturing, sediment dynamics, and riparian vegetation abundance. I’ve been focusing on canyons, which can harbor unique ecosystems, but also exist in a fragile balance of sediment and water dynamics that allows those ecosystems to thrive. As humans place recreational and land use pressures on canyon ecosystems, we have little data to understand how those ecosystems are responding. I’m working to understand both how canyons are shaped and store sediment, as well as how humans impact those dynamics and resulting ecosystems. This work will advance our understanding of bedrock river evolution and help us take a more informed approach to managing canyons.
Predicting Wood Jam Dynamics to Inform Wood Reintroduction and Removal Decisions in Rivers
I am also trying to understand wood jam dynamics to develop a statistical model of how and why wood jams change. If we can improve our ability to predict how wood jams change during high flows and combine that prediction with a strong understanding of the ecological benefits provided by wood, we can start to make more informed decisions regarding wood removal in rivers. This model will accompany a publicly accessible, user-contributed database of wood jam dynamics that I hope will help other folks interested in wood in rivers both conduct future research and manage wood.
Scott, D. N., Wohl, E. E. 2017. Evaluating Carbon Storage on Subalpine Lake Deltas. Earth Surface Processes and Landforms. DOI: 10.1002/esp.4110
Wohl, E., Lininger, K., Scott, D. N., 2017. River Beads as a Conceptual Framework for Building Carbon Storage and Resilience to Extreme Climate Events into River Management. Biogeochemistry, https://doi.org/10.1007/s10533-017-0397-7
Wohl, E., Scott, D. N. 2017. Transience of channel head locations following disturbance. Earth Surface Processes and Landforms Letters to ESEX, 42, 1132-1139. DOI: 10.1002/esp.4124
Wohl, E., Scott, D. N. 2017. Wood and Sediment Dynamics in River Corridors. Earth Surface Processes and Landforms, 42, 5-23.
Scott, D.N., Brogan, D. J., Schook, D. M., Lininger, K. B., Sparacino, M. S., Daugherty, E. E., Patton, A. I. 2016. Evaluating Survey Instruments and Methods in a Steep Channel. Geomorphology 273: 236–243
Scott, D. N., Montgomery, D. R., Wohl, E. E., 2014. Log Step and Clast Interactions in Mountain Streams in the Central Cascade Range of Washington State, USA. Geomorphology, 216, 180-186.
In Review or Revision
Scott, D. N., Wohl, E. E., In Revision. Synthesis of Fracture Influences on Geomorphic Process and Form Across Process Domains and Scales. Earth Surface Processes and Landforms
Scott, D. N., Wohl, E. E., In Revision. Natural and Anthropogenic Controls on Wood Loads in River Corridors of the Rocky, Cascade, and Olympic Mountains, USA. Water Resources Research
Wohl, E., Scott, D. N., Lininger, K. B., In Revision. Spatial distribution of channel and floodplain large wood in forested river corridors of the Northern Rockies. Water Resources Research
Scott, D. N., Wohl, E. E., In Review. Geomorphic regulation of floodplain soil organic carbon concentration in watersheds of the Rocky and Cascade Mountains, USA. Earth Surface Dynamics
Scott, D. N., Wohl, E. E., Yochum, S. E., In Review. Wood Jam Dynamics Database and Assessment Model (WooDDAM): A Monitoring Protocol for an Evolving, Public Database and Predictive Model. Water Resources Research