many landscapes (Naiman and Decamps 1997; Ewel et al. 2001; McClain et al. 2003). Because they occur at the land–water junction alongside natural waterways, they form unique ecosystems that act as “buffer zones” between uplands and streams (Hill 1996; Lowrance 1998). Research on riparian ecology has been diverse, and includes analysis of the habitat requirements of rare plant and animal species...

Heteromeles arbutifolia (from yellow fruit), "TOYON" Versatile, Calif. native, water-efficient small tree/large shrub w/ toothed, glossy green leaves, large clusters of white flowers in summer, showy red berries in winter; some may produce yellow berries. [9] (H*B*W*C*) Homalanthus populifolius, "QUEENSLAND POPLAR" Small, Aust. rainforest tree that is surprisingly hardy; fast-growing w/ handsom...

This paper discusses the problem of evaluating and predicting the treatment impact of a program that is implemented at multiple sites. Two issues arise: is information from other sites relevant in estimating the impact at a given site? and how can we account for predictive uncertainty in the site effects? Using data from the Greater Avenues for Independence evaluation, I develop a hierarchical ...

This article discusses the evaluation of programs implemented at multiple sites. Two frequently used methods are pooling the data or using Ž xed effects (an extreme version of which estimates separate models for each site). The former approach ignores site effects. The latter incorporates site effects but lacks a framework for predicting the impact of subsequent implementations of the program (...

Bytnerowicz, Andrzej; Arbaugh, Michael J.; Schilling, Susan L., technical coordinators. 1998. Proceedings of the international symposium on air pollution and climate change effects on forest ecosystems; 1996 February 5-9; Riverside, CA. Gen. Tech. Rep. PSW-GTR-166. Albany, CA: Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture; 332 p. The purpose of the Internati...