PhD, 2010, Forest Ecology, Oregon State University
MS, 2002, Terrestrial Ecosystems, University of Michigan
BS, 1997, Resource Ecology and Management, University of Michigan
- Climatic, topographic, and biotic controls of tree invasion in high elevation meadows
- Integrating vegetation surveys with remotely sensed data to spatially model forest composition and structure
- Applications of LiDAR and Landsat time series imagery to inventory and monitoring of forest ecosystems
- Ecology and management of Sierra Nevada mixed-conifer forests with emphasis on alterations of natural disturbance regimes, ecosystem restoration, responses to climate change
- Forest carbon dynamics in relation to climate and disturbance agents in complex mountain terrain
Zald H.S.J., Ohmann J.L., Roberts H.M., Henderson E.B., Gregory M.J., McGaughey R., and J. Braaten. 2014. Influence of LiDAR, Landsat time series disturbance history, and plot positional accuracy on the accuracy of imputation maps of forest composition and structure. Remote Sensing of Environment 143:26-38.
Henderson E.B., Ohmann J.L., Gregory M.J., Roberts H.M., and H.S.J. Zald. 2014. Species distribution modeling for plant communities: Stacked single-species, or multivariate modeling approaches? Applied Vegetation Science 17: 516-527.
Torresan C., Strunk J., Zald H.S.J., Zhiqiang Y., and W.B. Cohen. 2014. Comparing statistical techniques to classify the structure of mountain forest stands using CHM-derived metrics in Trento province (Italy). European Journal of Remote Sensing 47:75-94.
Zald H.S.J., Spies T.A., Huso M., and D. Gatziolis. 2012. Climatic, landform, microtopographic, and overstory canopy controls of tree invasion in a subalpine meadow landscape, Oregon Cascades, USA. Landscape Ecology 27:1197-1212.
Zald H.S.J. 2009. Extent and spatial patterns of grass bald meadow loss (1948- 2000), Oregon Coast Range, USA. Plant Ecology 201:517-529.
Zald H.S.J., Gray A.N., North M., and R.A. Kern. 2008. Initial tree regeneration responses to fire and thinning treatments in a Sierra Nevada mixed-conifer forest, USA. Forest Ecology and Management 256:168-179.
Meyer M., North M., Gray A.N., and H.S.J. Zald. 2007. Influence of soil thickness on stand characteristics in a Sierra Nevada mixed-conifer forest. Plant and Soil 294:113-123.
Hurteau M., North M., and H.S.J. Zald. 2007. Species-specific response to climate reconstruction in upper-elevation mixed- conifer forests of the western Sierra Nevada, California, USA. Canadian Journal of Forest Research 37:1681- 1691.
North M., Innes J., and H.S.J. Zald. 2007. Comparison of thinning and prescribed fire restoration treatments to Sierran mixed- conifer historic conditions. Canadian Journal of Forest Research 37:331-342.
Gray A.N., Zald H.S.J., Kern R.A., and M. North. 2005. Stand conditions associated with tree regeneration in Sierran mixed- conifer forests. Forest Science 51:198-210.
Wilking M. Juday G.P., Barber V.A., and H.S.J. Zald. 2004. Recent climate warming forces contrasting growth responses of white spruce at treeline in Alaska through temperature thresholds. Global Change Biology 10:1724-1736.