Heritability of plastic trait changes in drought?exposed ponderosa pine seedlings

Ponderosa Pine Seedlings and Competing Vegetation: Ecology, Growth, and Cost

Foresten oftm need information on the cost effedivenessofmanual and chemical release treatments for individual and combined species in young mixed-shrub communities. A studvin northern Califomia evaluated fivemanual and chemical treatmcnts and their effect an several shmbs and grasses. Treatments were grubbing at age 1 to 2-and 441 (0.6-and 1.2-m) radii, regrubbing and expanding the 2-ft radii ...

Direct and indirect effects of elevated CO(2) on whole-shoot respiration in ponderosa pine seedlings.

We determined the short-term direct and long-term indirect effects of CO(2) on apparent dark respiration (CO(2) efflux in the dark) in ponderosa pine (Pinus ponderosa Dougl. ex Laws.) seedlings grown in 35 or 70 Pa CO(2) partial pressure for 163 days in naturally lit, controlled-environment chambers. Two soil N treatments (7 and 107 ppm total N, low-N and high-N treatments, respectively) were i...

Multiaged Silviculture of Ponderosa Pine

Ponderosa pine (Pinus ponderosa P. & C. Lawson) is highly suitable for management using multiaged systems. This suitability is primarily the result of a frequent, low severity disturbance regime, but also because it naturally occurs at low densities and has a long history of management to promote multiple age classes. Several different stocking control tools are available for ponderosa pine inc...

Carry-over effects of ozone on root growth and carbohydrate concentrations of ponderosa pine seedlings.

Ozone exposure decreases belowground carbon allocation and root growth of plants; however, the extent to which these effects persist and the cumulative impact of ozone stress on plant growth are poorly understood. To evaluate the potential for plant compensation, we followed the progression of ozone effects, with particular emphasis on the development of new roots. Ponderosa pine (Pinus pondero...

Water Absorption by Needles of Ponderosa Pine Seedlings and Its Internal Redistribution.