References
SHOWING 1-6 OF 6 REFERENCES
Marked Post-18th Century Environmental Change in High-Arctic Ecosystems
- Environmental Science, GeographyScience
- 1994
Paleolimnological data from three high-arctic ponds on Cape Herschel, Ellesmere Island, Canada, show that diatom assemblages were relatively stable over the last few millennia but then experienced…
Eutrophication, Silica Depletion, and Predicted Changes in Algal Quality in Lake Michigan
- Environmental ScienceScience
- 1971
Limitation of the reproduction of the presently dominant phytoplankton organisms, which require silica, may lead to drastic and, on the whole, undesirable changes in the ecosystem.
‘Earth system’ analysis and the second Copernican revolution
- PhysicsNature
- 1999
Optical magnification instruments once brought about the Copernican revolution that put the Earth in its correct astrophysical context. Sophisticated information-compression techniques including…
Primary production required to sustain global fisheries
- Environmental ScienceNature
- 1995
THE mean of reported annual world fisheries catches for 1988-1991 (94.3 million t) was split into 39 species groups, to which fractional trophic levels, ranging from 1.0 (edible algae) to 4.2…
Human Domination of Earth's Ecosystems
- Environmental Science
- 1997
Human alteration of Earth is substantial and growing. Between one-third and one-half of the land surface has been transformed by human action; the carbon dioxide concentration in the atmosphere has…