Predicting animal cadmium concentrations in lakes
Article Abstract:
The laboratory-based free ion activity model is used to determine the cadmium (Cd) concentrations in aquatic organisms that act as biomonitors for the prediction of biologically related Cd concentrations in lakes. In the aquatic insect larva, Chaoborus punctipennis, the complexation between Cd and organic matter, and the struggle of hydrogen and Cd ions for biological uptake sites regulates the Cd level in the organism. The larvae act as an effective biomonitor as they are wide spread, and found over a range of pH, organic matter and metal content.
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:
Ecocide in the Caspian Sea
Article Abstract:
Flooding from the rising level of Caspian sea, which began in 1978, is causing grave ecological problems for Russia, Kazakhstan, Turkmenistan, Iran, Azerbaijan, and the countries surrounding it, according to a joint study by the World Bank and the United Nations. Ecological complications may turn the Caspian into a dead sea. Impact of the poor ecological management by the former Soviet Union government and toxicological wastes leakage into the lake is discussed. Proposed conservation plans for improving the situation are discussed.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1995
User Contributions:
Comment about this article or add new information about this topic:
Lakes under a three-pronged attack
Article Abstract:
Climate warming, acid deposition, and ozone depletion are the causes of environmental damage to lakes in Canada. The ultraviolet radiation (UV) penetrates into lake waters, inhibiting phytoplankton photosynthesis and increasing plant fungal infections. Climate warming and acid rain reduce dissolved organic carbon compounds, which inhibit the deeper penetration of UV-rays into the water. The environmental damage to lakes is a cause of concern among the scientific communities.
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:
- Abstracts: High radical acceleration in microvortices. Piglets add some colour to transgenic story
- Abstracts: Atmospheric carbon dioxide concentrations before 2.2 billion years ago. Meteoritic dust from the atmospheric disintegration of a large meteoroid
- Abstracts: Making the connection. Giving orchids a helping hand
- Abstracts: Bird conservation in America's heartland. Outfoxing the fox. Woodland caribou: a conservation dilemma
- Abstracts: Female nest choice in the penduline tit: a comment on Hoi et al. Nests built on the dorsum of conspecifics in Polistes: the value of anomalous behaviour