CONTENTS (Continued) 
vi 
The Integration of GPS Data into a GIS Landscape Ecology Model Database for 
Assessing Neotropical Bird Stopover Habitat in Big Bend National Park 
L. R. Handley, A. Calix, W. Jones, W. Barrow, and K. Gutzwiller 96 
Virtual Reality for Navigation and Analysis of Earth Landscapes 
P.A. Brivio, D. Marini, G. Ober, and L. Solda 97 
Remote Sensing Activities in Europe: An Overview 
V. Cappellini 108 
Implementing Universal GIS Functionality under a Virtual GIS Interface 
J. Albrecht, S. Jung, and M. Ehlers 109 
Decision Models for Environmental Vulnerability and Hazard Assessment in 
Agricultural Activities 
M. A. Gomarasca, F. Pagnoni, S. Strobelt, and S. Bocchi 122 
A Scalable, Object-Oriented GIS Framework 
M. Antonija, M. Dejan, D.-K. Slobodanka, and P. Milan 130 
GIS and the Key to all Data 
R. E. Bartlett 142 
The GPS in Forestry Applications 
J.M. Bento, J.T.M. Aranha, J.A. Goncalves, and N. Walford 144 
Land Degradation Mapping Combining Satellite Images and GIS Based Soil 
Information Systems 
L. Pasztor, J. Szabo, G. Varallyay, Z. Suba, and G. Csornai 151 
Environmental Applications of Hungarian Soil and Terrain Digital Database 
(HUNSOTER) 
L. Pasztor, J. Szabo, and G. Varallyay 153 
Hydrological Modelling Using Digital Terrain Models 
P. Pilesjo and Q. Zhou 155 
Metadata on the Lagoon Ecosystem: The Venice Case , Italy 
A. Bianchin 167 
The Use of Integrated Models in the Study of Climate Change Impacts 
S. Wright, N. Brown, and T. Parr 175