… Laliberte is a rangeland remote-sensing scientist at the Jornada Experimental Range, New
… associated with mapping changes in geographic ranges (Laliberte and Ripple 2004), we use …

Shrub encroachment into arid and semi-arid grasslands in the southwestern United States
is of concern because increased shrub cover leads to declines in species diversity, water …

We compared the historic and current geographical ranges of 43 North American carnivores
and ungulates to identify large-scale patterns in range contractions and expansions. …

Using unmanned aircraft systems (UAS) as remote sensing platforms offers the unique ability
for repeated deployment for acquisition of high temporal resolution data at very high spatial …

… Laliberte received the BS degree in natural resource science from the University College of
the Caribou, Kamloops, BC, Canada, and the MS degree in rangeland resources and the Ph.…

The use of unmanned aerial vehicles (UAVs) for natural resource applications has increased
considerably in recent years due to their greater availability, the miniaturization of sensors, …

Decision tree analysis is a statistical approach for developing a rule base used for image
classification. We developed a unique approach using object-based rather than pixelbased …

… , and is suitable for processing hundreds of UAS images (Laliberte et al., 2008). PreSync was
… in positional accuracies of approximately 1 m in flat terrain (Laliberte et al., in press), as in …

Research into automatic image processing of digital plot photography has increased in recent
years. However, in most studies only overall vegetation cover is estimated. In arid regions …

The availability of numerous spectral, spatial, and contextual features with object-based
image analysis (OBIA) renders the selection of optimal features a time consuming and …