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Tuesday, 03 April 2012 09:33 |
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From News Line, a daily compilation of farm water news distributed to CFWC members and others upon request. To receive News Line, click here and submit your request.
California water: Is anyone listening?
Coalition response...NRC scientists clearly identified multiple stressors that are impacting Delta fish populations. These stressors include poor water quality resulting from cities dumping ammonia into waterways, non-native predator fish that feast on juvenile salmon as they migrate through the Delta, lack of habitat and poor ocean conditions that rob salmon of a food supply. More important, the NRC scientists discounted efforts to single out an individual stressor. They stated on Page 8-- "Consideration of the large number of stressors and their effects and interactions leads to the conclusion that efforts to eliminate any one stressor are unlikely to reverse declines in the listed species." |
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Friday, 30 March 2012 11:41 |
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From News Line, a daily compilation of farm water news distributed to CFWC members and others upon request. To receive News Line, click here and submit your request.
Bits and pieces
Coalition response...There are many nuggets in the NRC study. Others include:
- "Introduced species have caused dramatic changes in habitat, prey, and predators of the listed fish species in the Delta. Introductions of nonnative species will continue into the future as management controls that substantially reduce risk are difficult and expensive to implement." --- Pages 7-8.
- "Coastal ocean productivity is one of the most significant factors determining the ocean survival of juvenile salmon and the number of adult salmon that return to spawn. When ocean conditions are unfavorable for salmon and steelhead, those effects can be partially ameliorated by increasing the diversity of wild and hatchery salmon ocean entrance timing." --- Page 8.
- "Consideration of the large number of stressors and their effects and interactions leads to the conclusion that efforts to eliminate any one stressor are unlikely to reverse declines in the listed species." --- Page 8.
There are even more nuggets; it just depends on what the reader is seeking. |
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