The TWDEF is in the Wasatch Mountains of northern Utah about 15 km south of the Utah-Idaho border and about 65 km east of Logan. It is comprised of four sections (sec. 15, 16, 21 and 22, Township 13 North, Range 4 East, Salt Lake Meridian). Utah State University owns one of the sections; the remainder are part of the Logan Ranger District of the Cache National Forest. Access to within 8 km of the experimental forest is via Highway 89. Access to the boundary and within the forest is on unpaved but excellent forest road which bisects the forest north to south; the remainder of the forest is accessed via primitive roads and trails. Winter access is limited to skis or snow machine.

Engelmann spruce (Picea engelmannii) and subalpine fir (Abies lasiocarpa) are the dominant late successional species throughout the forest. The major early successional species include lodgepole pine (Pinus contorta var. latifolia) and aspen (Populus tremuloides), with Douglas-fir (Pseudotsuga menziesii) and limber pine (Pinus flexilis) on south-facing ridges and at lower elevations. The aspen and conifer stands are interspersed with meadows and shrub-forb-grass uplands.

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2022

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Frost-Associated Defoliation in Populus tremuloides Causes Repeated Growth Reductions Over 185 years., J. D. Birch, Y. Chikamoto, R. J. DeRose, V. Manvailer, E. H. Hogg, J. Karst, D. M. Love, and J. A. Lutz; Ecosystems

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Polyploidy and growth-defense tradeoffs in natural populations of western quaking Aspen, R. J. DeRose, R. S. Gardner, R. L. Lindroth, and K. E. Mock; Journal of Chemical Ecology

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MASTREE+: Time-series of plant reproductive effort from six continents, A. Hacket-Pain, J. J. Foest, I. S. Pearse, J. M. LaMontagne, W. D. Koenig, G. Vacchiano, M. Bogdziewicz, T. Caignard, P. Celebias, J. Dormolen, M. Fernández-Martínez, J. V. Moris, C. Palaghianu, M. Pesendorfer, A. Satake, E. Schermer, A. J. Tanentzap, P. A. Thomas, D. Vecchio, A. P. Wion, T. Wohlgemuth, T. Xue, K. Abernethy, M. Aravena Acuña, M. Daniel Barrera, J. H. Barton, S. Boutin, E. R. Bush, S. Donoso Colderón, F. S. Carevic, C. V. Castilho, J. Manuel Cellini, C. A. Chapman, H. Chapman, F. Chianucci, P. Costa, L. Croisé, A. Cutini, B. Dantzer, R. J. DeRose, J. Dikangadissi, E. Dimoto, F. L. Fonseca, L. Gallo, G. Gratzer, D. F. Greene, M. A. Hadad, A. H. Herrera, K. J. Jeffrey, J. F. Johnstone, U. Kalbitzer, W. Kantorowicz, C. A. Klimas, J. G.A. Lageard, J. Lane, K. Lapin, M. Ledwoń, A. C. Leeper, M. Vanessa Lencinas, A. C. Lira-Guedes, M. C. Lordon, P. Marchelli, S. Marino, H. Schmidt Van Marle, A. G. McAdam, L. R.W. Momont, M. Nicolas, L.H. Oliveira Wadt, P. Panahi, G. Martínez Pastur, T. Patterson, S. Luis Schueler, B. Seget, R. Soler, M. A. Steele, M. Toro-Manríquez, C. E.G. Tutin, T. Ukizintambara, L. White, B. Yadok, J. L. Willis, A. Zolles, M. Żyweic, and D. Ascoli; Global Change Biology

2021

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Landscape-Scale Drivers of Resistance and Resilience to Bark Beetles: A Conceptual Susceptibility Model, M. A. Windmuller-Campione, R. J. DeRose, and J. N. Long; Ecology and Management of Forest Pests

2020

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Aspen Soils Retain More Dissolved Organic Carbon Than Conifer Soils in a Sorption Experiment, Antra Boca, Astrid R. Jacobson, and Helga Van Miegroet; Frontiers in Forests and Global Change

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Fire-Environment Analysis: An Example of Army Garrison Camp Williams, Utah, M. S. Frost, E. M. Alexander, J. R. DeRose, and J. M. Jenkins; Fire

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Snow processes in mountain forests: interception modeling for coarse-scale applications, Nora Helbig, David Moeser, Michaela Teich, Laure Vincent, Yves Lejeune, Jean-Emmanuel Sicart, and Jean-Matthieu Monnet; Hydrol. Earth Syst. Sci.

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Spruce beetle outbreak was not driven by drought stress: Evidence from a tree-ring iso-demographic approach indicates temperatures were more important, J. M. Pettit, J. I. Burton, R. J. DeRose, and S. L. Voelker; Global Change Biology

2019

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Ground, Proximal, and Satellite Remote Sensing of Soil Moisture, Ebrahim Babaeian, Morteza Sadeghi, Scott B. Jones, Carsten Montzka, Harry Vereecken, and Markus Tuller; Review of Geophysics

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Epidemic spruce beetle outbreak changes drivers of Engelmann spruce regeneration, J. M. Pettit, J. I. Burton, R. J. DeRose, J. N. Long, and S. L. Voelker; Ecosphere

2018

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Building Resistance and Resilience: Regeneration Should Not be Left to Chance, James N. Long, Marcella Windmuller-Campione, and R Justin DeRose; Forests

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Chapter 15 - Composition and structure of whitebark and limber pine stands in the Interior West and the silvicultural implications (Project INT-EM-B-14-01), J. N. Long, J. Shaw, and M. Windmuller-Campione; Forest health monitoring

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Advancing Methods to Quantify Actual Evapotranspiration in Stony Soil Ecosystems, Kshitij Parajuli

2017

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Effect of Foliage and Root Carbon Quantity, Quality, and Fluxes on Soil Organic Carbon Stabilization in Montane Aspen and Conifer Stands in Utah, Antra Boca

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Can Carbon Fluxes Explain Differences in Soil Organic Carbon Storage under Aspen and Conifer Forest Overstories?, Antra Boca and Helga Van Miegroet; Forests

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Summer-fall home-range fidelity of female elk in northwestern Colorado: Implications for aspen management, A. M. Brough, R. J. DeRose, M. M. Conner, and J. N. Long; Forest Ecology and Management

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Assessing the Thermal Dissipation Sap Flux Density Method for Monitoring Cold Season Water Transport in Seasonally Snow Covered Forests, Allison M. Chan and David R. Bowling; Tree Physiology

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Assessing the Thermal Dissipation Sap Flux Method for Monitoring Cold Season Water Transport in Seasonally Snow-Covered Forests, Allison M. Chan and David R. Bowling; Tree Physiology

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Silviculture in the United States: An Amazing Period of Change over the Past 30 Years, A. W. D'Amato, E. J. Jokela, K. L. O'Hara, and J. N. Long; Journal of Forestry

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Traumatic resin ducts as indicators of bark beetle outbreaks, R. J. DeRose, M. F. Bekker, and J. N. Long; Canadian Journal of Forest Research

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A Binary Mixing Model for Characterizing Stony-Soil Water Retention, Kshitij Parajuli, Morteza Sadeghi, and Scott B. Jones

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Continuous monitoring of snowpack dynamics in alpine terrain by aboveground neutron sensing, Paul Schattan, Gabriele Baroni, Sascha E. Oswald, Johannes Schöber, Christine Fey, Christoph Kormann, Matthias Huttenlau, and Stefan Achleitner

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Improving Calibration and Validation of Cosmic-Ray Neutron Sensors in Light of Spatial Sensitivity, Martin Schrön and Markus Köhli; Hydrology and Earth System Sciences

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Improving Calibration and Validation of Cosmic-Ray Neutron Sensors in the Light of Spatial Sensitivity–Theory and Evidence, Martin Schrön and Markus Köhli; Hydrology and Earth System Sciences

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Does the Practice of Silviculture Build Resilience to the Spruce Beetle? A Case Study of Treated and Untreated Spruce-Fir Stands in Northern Utah, M. A. Windmuller-Campione, D. H. Page, and J. N. Long; Journal of Forestry

2016

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Summer soil moisture loss at Utah SNOTEL sites and streamflow recession at nearby gauges: variability in runoff generation and the potential for flow forecasting, Jordan A. Clayton; Hydrological Processes

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GPS interferometric reflectometry:applications to surface soilmoisture, snow depth, andvegetation water content in thewestern United States, Kristine M. Larson; Wiley Interdisciplinary Reviews : Water

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How Does Availability of Meteorological Forcing Data Impact Physically Based Snowpack Simulations?, Mark S. Raleigh, Ben Livneh, Karl Lapo, and Jessica D. Lundquist; Journal of Hydrometeorology

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Limber Pine (Pinus flexilis James), a Flexible Generalist of Forest Communities in the Intermountain West, M. A. Windmuller-Campione and J. N. Long

2015

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Integration of an energy balance snowmelt model into an open source modeling framework, A Sen Gupta, D G. Tarboton, P Hummel, M E. Brown, and S Habb; Environmental Modeling & Software

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Structural and Compositional Patterns in Forest Communities in the Intermountain West Across Multiple Scales, Marcella A. Windmuller-Campione

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If Long-Term Resistance to a Spruce Beetle Epidemic is Futile, Can Silvicultural Treatments Increase Resilience in Spruce-Fir Forests in the Central Rocky Mountains?, Marcella A. Windmuller- Campione and James N. Long; Forests

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Multi-taxon alpha diversity following bark beetle disturbance: Evaluating multi-decade persistence of a diverse early-seral phase, Maria Barbara Winter, Christian Ammer, Roland Baier, Daniel C. Donato, Sabastian Seibold, and Jörg Müller; Forest Ecology and Management

2014

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An integrated modeling system for estimating glacier and snow melt driven streamflow from remote sensing and earth system data products in the Himalayas, M E. Brown, A E. Racoviteanu, D G. Tarboton, A Sen Gupta, J Nigro, F Policelli, S Habib, M Tokay, M S. Shrestha, S Bajracharya, P Hummel, M Gray, P Duda, B Zaitchik, V Mahat, G Artan, and S Tokar; Journal of Hydrology

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Predicting Tree Species Origin of Soil Organic Carbon with Near-Infrared Reflectance Spectroscopy, Mercedes Roman Debarco, Helga Van Miegrot, Marie Cecile Gruselle, and Jürgen Bauhus; Soil Science Society of American Journal

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Influence of Stand Composition on Soil Organic Carbon Stabilization and Biochemistry in Aspen and Conifer Forests of Utah, Mercedes Roman Dobarco

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Linking Montane Soil Moisture Measurements to Evapotranspiration Using Inverse Numerical Modeling, Ling Lv

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Measured and Modeled SOil Moisture Compared with Cosmic-Ray Neutron Probe Estimates in a Mixed Forest, LIng Lv, Trenton E. Franz, David A. Robinson, and Scott B. Jones; Vadose Zone Journal

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Measured and Modeled Soil Moisture Compared with Cosmic-Ray Neutron Probe Estimates in a Mixed Forest, Ling Lv, Trenton E. Franz, David A. Robinson, and Scott B. Jones; Vadose Zone Journal

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Representation of canopy snow interception, unloadingand melt in a parsimonious snowmelt model, Vinod Mahat and David G. Tarboton; Hydrological Proccesses

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Snow depth, density, and SWE estimates derived from GPS reflection data: Validation in the western U. S., James L. McCreight, Eric E. Small, and Kristine M. Larson; Water Resources Research

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Improving the Physical Processes and Model Integration Functionality of an Energy Balance Model for Snow and Glacier Melt, Avirup Sen Gupta

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Evaluating the Utah Energy Balance (UEB) snow model in the Noah land-surface model, R Sultana, K L. HSU, J LI, and S Sorooshian; Hydrology and Earth System Sciences

2013

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Using the Utah energy balance snow melt model to quantify snow and glacier melt in the Himalayan region, Avirup Sen Gupta and David G. Tarboton; Western Snow Conference

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Testing Above- and Below-Canopy Representations of Turbulent Fluxes in an Energy Balance Snowmelt Model, Vinod Mahat, David G. Tarboton, and Noah P. Molotch; Water Resources Research

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Forward and Inverse Modeling of GPS Multipath for Snow Monitoring, Felipe Germia Nievinski; Aerospace Engineering Sciences Graduate Theses & Dissertations

2012

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Fidelity and diagnostic species concepts in vegetation classification in the Rocky Mountains, northern Utah, USA, Antonin Kusbach, James N. Long, Helga Van Miegroet, and Leila M. Shultz; Botany

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Canopy radiation transmission for an energy balance snowmelt model, Vinod Mahat and David G. Tarboton

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Estimation of Soil Clay Content from Hygroscopic Water Content Measurements, Mark N. Wuddivira, David A. Robinson, Imma Lebron, Laetitia Brechet, Melissa Atwell, Sunshine De Caires, Michael Oatham, Scott B. Jones, Hiruy Abdu, Aditya K. Verma, and Markus Tuller

2011

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Hierarchical controls on runoff generation: Topographically driven hydrologic connectivity, geology, and vegetation, Kelsey G. Jensco and Brian L. McGlynn