Search Results - "VAN LEEUWEN, D. J"

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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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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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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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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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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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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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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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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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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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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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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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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Placebo controlled trial of enteric coated pancreatin microsphere treatment in patients with unresectable cancer of the pancreatic head region by Bruno, M J, Haverkort, E B, Tijssen, G P, Tytgat, G N J, van Leeuwen, D J

“…Background—Impeded flow of pancreatic juice due to mechanical obstruction of the pancreatic duct in patients with cancer of the pancreatic head region causes…”
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Tumor necrosis factor gene polymorphisms in patients with cirrhosis from chronic hepatitis C virus infection by Yee, L J, Tang, J, Herrera, J, Kaslow, R A, van Leeuwen, D J

“…Pro-inflammatory cytokines including tumour necrosis factor (TNF) mediate the pathogenesis of hepatitis C virus (HCV) infection. The distribution of TNF gene…”
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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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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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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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Vegetation productivity responses to drought on tribal lands in the four corners region of the Southwest USA by EL-VILALY, Mohamed Abd Salam, DIDAN, Kamel, MARSH, Stuart E., VAN LEEUWEN, Willem J.D., CRIMMINS, Michael A., MUNOZ, Armando Barreto

“…For more than a decade, the Four Corners Region has faced extensive and persistent drought conditions that have impacted vegetation communities and local water…”
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