Chapter

What a Changing Delta Means for the ecosystem and its fish

Jay R. Lund, Ellen Hanak, William E. Fleenor, William A. Bennett, Richard E. Howitt, Jeffrey F. Mount and Peter B. Moyle

in Comparing Futures for the Sacramento - San Joaquin Delta

Published by University of California Press

Published in print February 2010 | ISBN: 9780520261976
Published online March 2012 | e-ISBN: 9780520945371 | DOI: http://dx.doi.org/10.1525/california/9780520261976.003.0006
What a Changing Delta Means for the ecosystem and its fish

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Over the last decade, fish populations in the Sacramento-San Joaquin Delta ecosystem has substantially declined. In the Delta, the water allocation strategy has resulted in a diminishing proportion of the water being made available for fish or ecosystem needs. This chapter addresses whether alternatives to the present through-Delta pumping strategy can transform the Delta ecosystem into a favorable habitat for desirable fish species and other organisms. It begins by discussing the basic concepts and premises that must underlie any rebuilding of the Delta ecosystem and then assesses the likely responses of key species to general export strategies. It concludes with a brief discussion of initiatives to manage the Delta as a resilient ecosystem that maintains desirable characteristics, as it adjusts to natural and human-induced climatic variability.

Keywords: fish populations; Sacramento-San Joaquin Delta; water allocation; through-Delta pumping strategy; export strategies

Chapter.  5109 words.  Illustrated.

Subjects: Animal Pathology and Diseases

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