New paper: Challenges and opportunities in synthesizing historical geospatial data

Eitzel, M V, Kelly, M, Dronova, I, Valachovic, Y, Quinn-Davidson, L, Solera, J, and de Valpine, P. 2016. Challenges and opportunities in synthesizing historical geospatial data using statistical models, Ecological Informatics 31: 100–111

We classified land cover types from 1940s historical aerial imagery using Object Based Image Analysis (OBIA) and compared these maps with data on recent cover. Few studies have used these kinds of maps to model drivers of cover change, partly due to two statistical challenges: 1) appropriately accounting for spatial autocorrelation and 2) appropriately modeling percent cover which is bounded between 0 and 100 and not normally distributed. We studied the change in woody cover at four sites in California’s North Coast using historical (1948) and recent (2009) high spatial resolution imagery.

Click to read more ...

Survival of oaks and tanoaks after 8 years of SOD monitoring

McPherson, B. M., D. L. Wood, S. Mori, M. Kelly, A. J. Storer, P. Svihra, and R. B. Standiford. 2010. Survival of oaks and tanoaks after eight years of sudden oak death monitoring in coastal California. Forest Ecology and Management 259: 2248-2255

We report on the survival of trees (coast live oaks, black oaks, and tanoaks) in long-term SOD monitoring plots in Marin County.

Click to read more ...

Sudden oak death disease progression in oaks and tanoaks

McPherson, B. A. S. Mori, D. L. Wood, A. J. Storer, P. Švihra, N. M. Kelly and R. B. Standiford. 2005. Sudden oak death in California: Disease progression in oaks and tanoaks. Journal of Forest Ecology and Management 213(1-3): 71-89 

Spatial accuracy assessment of wetland permits

Kelly, 2000. Cartography and Geographic Information Systems. A collection of permits granted for alterations to coastal wetlands in North Carolina from 1984 through 1992 was examined to determine the spatial accuracy of the data.

Click to read more ...