Ancient trees in Amazonia
Article Abstract:
C-dating reveals that trees in central Amazon rain forests can be more than 1,400 years old. Research into the distribution of ages between a number of large emergent trees in the central Amazon involved C-dating 20 trees from 13 species harvested in a 80,000-ha logging operation. There were close links between tree size and age, but most variability was explained by other factors. Long-term average growth was closely connected with age in a nonlinear relationship.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1998
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Mineral control of soil organic carbon storage and turnover
Article Abstract:
Research using radiocarbon isotopes shows that metastable, non-crystalline minerals affect the level, turnover and ecology of the organic carbon in soil. Soil mineralogy analysis indicates that the build-up and break-down of organic matter in soil around 4,100,000 years ago was significantly controlled by mineral-stabilized carbon. Organic carbon levels may have been affected by passive (mineral-stabilized) soil carbon.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1997
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Carbon sink for a century
Article Abstract:
Issues are presented concerning the growing importance of maintaining large forests as reservoirs for carbon as land-use activities and fossil-fuel combustion results in increasing levels of carbon dioxide in the atmosphere.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2001
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