Fires that burn through forests cause changes in wood anatomy and growth that can be used to reconstruct fire histories. Fire is important in Sequoia sempervirens (D. Don) Endl. (coast redwood) forests, but fire histories are limited due to difficulties
However, greater insight into trees’ physiological responses can be gained by tree-ring carbon isotopes compared to ring-width records. More specifically, carbon isotope discrimination (Δ13C) is largely dependent on the ratio of photosynthesis and stomatal conductance, and therefore under most ...
Eleven-year-old Evan Green doesn’t want to save just one tree-he wants to save a whole rainforest!In the Redwood City, Calif., a boy started a group called the Red Dragon Conservation Team four years ago to do just that. So far, the team’s members have
The European Nitrogen Assessment identifies five key threats associated with excess reactive nitrogen in the environment: damage to water quality, air quality (and hence human health, in particular respiratory problems and cancers), soil quality (acidification of agricultural soils and loss of soil biod...
India is planning a substantial expansion of her coal industry, and China aims to add another 900m tonnes of annual output, compared to our total use of some 10 million tonnes a year. Policy has not been so successful in ensuring future self sufficiency in energy. Current plans assume a ...
They’re upset with him because he’s shaking the tree, as he ought. jane4brexit June 5, 2019 More people in England voted Conservative than Labour in 2005 at least, I am not sure if it happened in other elections too, yet we got Blair and didn’t hardly mentioned it. The system...