Research Highlights: In mixed stands, competitive and supportive relationships occur between trees, illustrated by their dendrometric characteristics. Background Objectives: We investigated the effect of species composition on growth yield in beech–coniferous stands Romanian Carpathians. Materials Methods: selected sites with similar trophicity levels, as determined site mapping method. Under s...

NAGEL, T. A. AND A. H. TAYLOR (Department of Geography, The Pennsylvania State University, 302 Walker Building, University Park, PA 16802). Fire and persistence of montane chaparral in mixed conifer forest landscapes in the northern Sierra Nevada, Lake Tahoe Basin, California J. Torrey Bot. Soc. 132: 442–457. 2005.— Tree cover in the mixed conifer zone in the Sierra Nevada is often interrupted ...

Timber production and profitability were evaluated for spontaneously-regenerated mixtures on two formerly clearcut areas. The abandoned areas developed into birch-dominated ( Roth Ehrh.) stands with successional ingrowth of Norway spruce (L.) H. Karst.). An experiment randomized treatments within blocks was established, using three management strategies one unthinned control, resulting in...

We examined tree diameter, age structure, and successional trends in 100 montane forest plots to identify the effects of variation in the return interval, severity, and extent of fires on forest structure and dynamics in the southern Cascade Range, California. We classified 100 forest plots into 8 groups based on stand structural characteristics. Median point fire return intervals were shortest...