I contrast conifer seedling responses to increased nitrogen availability with those of hardwood seedlings and consider regeneration in both hemlock and hardwood stands. I propose to investigate how total canopy carbon uptake rates differ for the dominant conifer and hardwood species in temperate forests. First, using a simple canopy model, I scale from leaf-level photosynthesis to instantaneous canopy carbon uptake for different tree species. Then, I use a novel technique that scales continuous measurements of whole-tree transpiration to annual estimates of total canopy photosynthesis for individual species. Human domination of Earth's ecosystems.
Hemlock stand structure and environment.
Blackwell Scientific, Oxford. 5. Influence of nitrogen loading and species composition on the carbon balance of grasslands. Different responses to gaps among shade-tolerant tree species. Linking tree population dynamics and forest ecosystem processes. Cambridge University Press, Cambridge.