By Richard W. Spjut
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Additional info for A Systematic Treatment of Fruit Types
McGraw-Hill, New York. H. (1980). Habitat selection: general theory and applications to human behavior. S. ) pp. 32–45. Elsevier North-Holland. , Keller, M. , and Yoshimura, M. (2003). Biodiversity meets the atmosphere: a global view of forest canopies. Science 301, 183–186. G. (1995). Structure and microclimate of forest canopies. D. M. ), pp. 73–106. Academic Press, San Diego. G. (1997). Canopy structure and light environment of an old-growth Douglas-fir/western hemlock forest. Northwest Sci.
Thus, cutting and burning an old-growth forest rapidly pulses carbon back into the atmosphere as a greenhouse gas that took decades or centuries to store (Ozanne et al. 2003). Forest canopies also support organisms that add available nutrients from sources that originate outside the ecosystem. Early work in nitrogen-limited forests of the Pacific Northwest demonstrated that arboreal epiphytes are capable of fixing 1–7 kilograms per hectare per year of gaseous nitrogen (N) and passing it to other ecosystem members via leaching and epiphyte litterfall (Denison 1973).
In the last decade, many popular articles, television programs, and films (such as the 1998 National Geographic Society film Heroes of the High Frontier) have been produced about forest canopy researchers and their work. Public interest comes from a wide range of age groups, particularly children, who have a natural love for climbing trees and exploring little-known places. Many people who are involved in environmental education and outreach have found that the forest canopy can serve as a focal point to raise awareness and mindfulness of the forest as a whole because of the youth of the science, the beauty of the habitat, and the instinctive tug that it has on humans.
A Systematic Treatment of Fruit Types by Richard W. Spjut