Acid rain not only to blame
Article Abstract:
Prehistoric agricultural society has been proven just as guilty in causing changes to the chemistry of lakes in Sweden. Although the changes resulting from agricultural practices of the past were minimal, the study demonstrated that land use plays a significant role in controlling lake chemistry. I. Renberg and associates showed evidence that surface water pH was affected by variations in land use. In particular, Renberg and colleagues proved that alkalinity increased when forest land was converted into agricultural land and acidification occurred when agricultural practices were abandoned.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1993
User Contributions:
Comment about this article or add new information about this topic:
Role for heavy metals in forest decline indicated by phytochelatin measurements
Article Abstract:
Heavy metal pollutants are a cause of tree damage in US. The concentration of phytochelatins in trees is greater at higher altitudes and in areas of the Northeastern US where there has been significant tree damage. Phytochelatins are intracellular metal-binding peptides that indicate metal stress. The phytochelatin level is high in red spruce which is in decline, as compared to balsam fir which is undamaged.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1996
User Contributions:
Comment about this article or add new information about this topic:
Valuation of consumption and sale of forest goods from a Central American rain forest
Article Abstract:
Research is presented concerning the value received by the local population for each hectare of rain forest in eastern Honduras. The value of forest goods sold by the Tawahka Amerindians ranged from US$17.79 to US$23.72 per hectare.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2000
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Decreased lesion formation in CCR2-/- mice reveals a role for chemokines in the initiation of atherosclerosis
- Abstracts: Circularly polarized light generated by photoexcitation of luminophores in glassy liquid-crystal films. Cellulose stacks up
- Abstracts: Evidence for bromine monoxide in the free troposphere during the Arctic polar sunrise. Direct measurement of tropospheric ozone distributions from space
- Abstracts: Protein interaction maps for complete genomes based on gene fusion events. Debates over credit for the annotation of genomes
- Abstracts: An underground route for the water cycle. The ozone layer: the road not taken