Dear Claudia et al. We are happy to see that our method development was put to good use. The large dataset that you generated using the BC marker method is impressive. Moreover, the finding that the majority of post-fire BC persists in the litter and is probably easily transported elsewhere before incorporation into the soil could be of high interest to the BC community. We have a few technical...

Our first objective was to link the seasonality of fine root dynamics with soil respiration in a ponderosa pine (Pinus ponderosa P. & C. Lawson) plantation located in the Sierra Nevada of California. The second objective was to examine how canopy photosynthesis influences fine root initiation, growth and mortality in this ecosystem. We compared CO2 flux measurements with aboveground and belowgr...

© 2012 American Society of Animal Science. All rights reserved. J. Anim. Sci. 2012.90:4611–4617 doi:10.2527/jas2012-5232

Soil respiration is controlled by soil temperature, soil water, fine roots, microbial activity, and soil physical and chemical properties. Forest thinning changes soil temperature, soil water content, and root density and activity, and thus changes soil respiration. We measured soil respiration monthly and soil temperature and volumetric soil water continuously in a young ponderosa pine (Pinus ...

Landscape-scale disturbance events, including ecological restoration and fuel reduction activities, can modify habitat and affect relationships between species and their environment. To reduce the risk of uncharacteristic stand-replacing fires in the southwestern United States, land managers are implementing restoration and fuels treatments (e.g., mechanical thinning, prescribed fire) in progre...

...................................................................................................................... iii ACKNOWLEDGMENTS ................................................................................................. iv TABLE OF CONTENTS .................................................................................................... v INTRODUCTION ..........................

At the moment of writing this editorial (September 2004), the oldest living person in the world is Hendrikje van Andel. She celebrated her 114th birthday on June 29 of this year, and lives in an old people’s home in Hoogeveen, the Netherlands. When interviewed by the world press she cheerfully gave away her secret: a herring and a glass of orange juice a day. While survival beyond the age of 10...

Two coniferous tree species of contrasting sapwood width (Pinus ponderosa L., ponderosa pine and Pseudotsuga menziesii Mirb., Douglas-fir) were compared to determine whether bole respiratory potential was correlated with available storage space in ray parenchyma cells and/or respiratory substrate concentration of tissues (total nitrogen content, N; and total non-structural carbohydrate content,...

Acclimation to elevated atmospheric carbon dioxide concentration and temperature of respiration by the foliage in the crown of Scots pine (Pinus sylvestris) trees is measured and modelled. Starting in 1996, individual 20-year-old trees were enclosed in chambers and exposed to either normal ambient conditions (CON), elevated CO2 concentration (EC), elevated temperature (ET) or a combination of E...

1 Mountain pine beetle (Dendroctonus ponderosae) is an important disturbance agent in Pinus ecosystems of western North America, historically causing significant tree mortality. Most recorded outbreaks have occurred in mid elevation lodgepole pine (Pinus contorta). In warm years, tree mortality also occurs at higher elevations in mixed species stands. 2 Mountain pine beetle’s relative preferenc...