Search Results - "Van Leeuwen, Willem J D"

Intercomparison, interpretation, and assessment of spring phenology in North America estimated from remote sensing for 1982-2006 by WHITE, MICHAEL A, de BEURS, KIRSTEN M, DIDAN, KAMEL, INOUYE, DAVID W, RICHARDSON, ANDREW D, JENSEN, OLAF P, O'KEEFE, JOHN, ZHANG, GONG, NEMANI, RAMAKRISHNA R, van LEEUWEN, WILLEM J.D, BROWN, JESSLYN F, de WIT, ALLARD, SCHAEPMAN, MICHAEL, LIN, XIOAMAO, DETTINGER, MICHAEL, BAILEY, AMEY S, KIMBALL, JOHN, SCHWARTZ, MARK D, BALDOCCHI, DENNIS D, LEE, JOHN T, LAUENROTH, WILLIAM K

“…Shifts in the timing of spring phenology are a central feature of global change research. Long-term observations of plant phenology have been used to track…”
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Convergence in relationships between leaf traits, spectra and age across diverse canopy environments and two contrasting tropical forests by Wu, Jin, Chavana‐Bryant, Cecilia, Prohaska, Neill, Serbin, Shawn P., Guan, Kaiyu, Albert, Loren P., Yang, Xi, Leeuwen, Willem J. D., Garnello, Anthony John, Martins, Giordane, Malhi, Yadvinder, Gerard, France, Oliviera, Raimundo Cosme, Saleska, Scott R.

“…Leaf age structures the phenology and development of plants, as well as the evolution of leaf traits over life histories. However, a general method for…”
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Beyond greenness: Detecting temporal changes in photosynthetic capacity with hyperspectral reflectance data by Barnes, Mallory L, Breshears, David D, Law, Darin J, van Leeuwen, Willem J D, Monson, Russell K, Fojtik, Alec C, Barron-Gafford, Greg A, Moore, David J P

“…Earth's future carbon balance and regional carbon exchange dynamics are inextricably linked to plant photosynthesis. Spectral vegetation indices are widely…”
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Examining the Impacts of Pre-Fire Forest Conditions on Burn Severity Using Multiple Remote Sensing Platforms by Lee, Kangsan, van Leeuwen, Willem J. D., Gillan, Jeffrey K., Falk, Donald A.

“…Pre-fire environmental conditions play a critical role in wildfire severity. This study investigated the impact of pre-fire forest conditions on burn severity…”
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A Novel Spectral Index to Identify Cacti in the Sonoran Desert at Multiple Scales Using Multi-Sensor Hyperspectral Data Acquisitions by Hartfield, Kyle, Gillan, Jeffrey K., Norton, Cynthia L., Conley, Charles, van Leeuwen, Willem J. D.

“…Accurate identification of cacti, whether seen as an indicator of ecosystem health or an invasive menace, is important. Technological improvements in…”
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Spatial, temporal, and density-dependent components of habitat quality for a desert owl by Flesch, Aaron D, Hutto, Richard L, van Leeuwen, Willem J D, Hartfield, Kyle, Jacobs, Sky

“…Spatial variation in resources is a fundamental driver of habitat quality but the realized value of resources at any point in space may depend on the effects…”
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Correction: Spatial, Temporal, and Density-Dependent Components of Habitat Quality for a Desert Owl by Flesch, Aaron D, Hutto, Richard L, van Leeuwen, Willem J D, Hartfield, Kyle, Jacobs, Sky

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Integrating drone imagery with existing rangeland monitoring programs by Gillan, Jeffrey K., Karl, Jason W., van Leeuwen, Willem J. D.

“…The recent availability of small and low-cost sensor carrying unmanned aerial systems (UAS, commonly known as drones) coupled with advances in image processing…”
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Viewing Woody-Plant Encroachment through a Social–Ecological Lens by WILCOX, BRADFORD P., BIRT, ANDREW, ARCHER, STEVEN R., FUHLENDORF, SAMUEL D., KREUTER, URS P., SORICE, MICHAEL G., VAN LEEUWEN, WILLEM J. D., ZOU, CHRIS B.

“…Grasslands and savannas worldwide have been dramatically altered by woody-plant encroachment (WPE). Maintaining remnant grasslands and restoring degraded…”
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Evaluating Post-wildfire Vegetation Regeneration as a Response to Multiple Environmental Determinants by Casady, Grant M, van Leeuwen, Willem J. D, Marsh, Stuart E

“…Vegetation regeneration in post-fire environments varies across the landscape of a burned area. Variations are caused by interacting factors, including soil…”
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Structure from Motion of Multi-Angle RPAS Imagery Complements Larger-Scale Airborne Lidar Data for Cost-Effective Snow Monitoring in Mountain Forests by Broxton, Patrick D., van Leeuwen, Willem J. D.

“…Snowmelt from mountain forests is critically important for water resources and hydropower generation. More than 75% of surface water supply originates as…”
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Remotely sensed vegetation phenology and productivity along a climatic gradient: on the value of incorporating the dimension of woody plant cover by Davison, Jennifer E., Breshears, David D., van Leeuwen, Willem J. D., Casady, Grant M.

“…Aim: Woody plants affect vegetation-environment interactions by modifying microclimate, soil moisture dynamics and carbon cycling. In examining broadscale…”
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Multi-Temporal LiDAR and Hyperspectral Data Fusion for Classification of Semi-Arid Woody Cover Species by Norton, Cynthia L., Hartfield, Kyle, Collins, Chandra D. Holifield, van Leeuwen, Willem J. D., Metz, Loretta J.

“…Mapping the spatial distribution of woody vegetation is important for monitoring, managing, and studying woody encroachment in grasslands. However, in…”
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Monitoring the Effects of Forest Restoration Treatments on Post-Fire Vegetation Recovery with MODIS Multitemporal Data by Van Leeuwen, Willem J D

“…This study examines how satellite based time-series vegetation greenness data and phenological measurements can be used to monitor and quantify vegetation…”
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Landscape Dynamics in an Iconic Watershed of Northwestern Mexico: Vegetation Condition Insights Using Landsat and PlanetScope Data by Cornejo-Denman, Lara, Romo-Leon, Jose Raul, Hartfield, Kyle, van Leeuwen, Willem J. D., Ponce-Campos, Guillermo E., Castellanos-Villegas, Alejandro

“…Natural vegetation in arid and semi-arid environments of Northwestern Mexico has been subject to transformation due to extensive and intensive human occupation…”
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Fusion of High Resolution Aerial Multispectral and LiDAR Data: Land Cover in the Context of Urban Mosquito Habitat by Hartfield, Kyle A., Landau, Katheryn I., Leeuwen, Willem J. D. van

“…Remotely sensed multi-spectral and -spatial data facilitates the study of mosquito-borne disease vectors and their response to land use and cover composition…”
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Productivity and phenological responses of natural vegetation to present and future inter-annual climate variability across semi-arid river basins in Chile by Glade, Francisco E., Miranda, Marcelo D., Meza, Francisco J., van Leeuwen, Willem J. D.

“…Time series of vegetation indices and remotely sensed phenological data offer insights about the patterns in vegetation dynamics. Both are useful sources of…”
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Climate and Socioeconomic Factors Drive Irrigated Agriculture Dynamics in the Lower Colorado River Basin by Norton, Cynthia L., Dannenberg, Matthew P., Yan, Dong, Wallace, Cynthia S. A., Rodriguez, Jesus R., Munson, Seth M., van Leeuwen, Willem J. D., Smith, William K.

“…The Colorado River Basin (CRB) includes seven states and provides municipal and industrial water to millions of people across all major southwestern cities…”
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Multi-sensor NDVI data continuity: Uncertainties and implications for vegetation monitoring applications by van Leeuwen, Willem J.D., Orr, Barron J., Marsh, Stuart E., Herrmann, Stefanie M.

“…Consistent NDVI time series are paramount in monitoring ecological resources that are being altered by climate and human impacts. An increasing number of…”
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Land Use and Environmental Variability Impacts on the Phenology of Arid Agro-Ecosystems by Romo-Leon, Jose Raul, van Leeuwen, Willem J. D., Castellanos-Villegas, Alejandro

“…The overexploitation of water resources in arid environments often results in abandonment of large extensions of agricultural lands, which may (1) modify…”
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