Pamphlets on Conservation of Natural Resources, Volumen35U.S. Government Printing Office, 1909 |
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... biota . Grazing and Grassland Succession : Approximately two - thirds of the existing grassland should be preserved by a vegetation management program . Inquiry should be made as to methods for improving the composition of grasses to ...
... biota . Grazing and Grassland Succession : Approximately two - thirds of the existing grassland should be preserved by a vegetation management program . Inquiry should be made as to methods for improving the composition of grasses to ...
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... biota . Dredging to Improve Circulation : Presently , there is not sufficient cause to support a dredging program that purports to improve circulation to the northwest end of the Lagoon . Nuisance algae blooms will decrease with lower ...
... biota . Dredging to Improve Circulation : Presently , there is not sufficient cause to support a dredging program that purports to improve circulation to the northwest end of the Lagoon . Nuisance algae blooms will decrease with lower ...
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... biota or microgeography are , to date , unclear . Hopefully , these questions will be answered in a continuing study involving the Audubon Canyon Ranch and the Point Reyes Bird Observatory . Until the bird populations are better ...
... biota or microgeography are , to date , unclear . Hopefully , these questions will be answered in a continuing study involving the Audubon Canyon Ranch and the Point Reyes Bird Observatory . Until the bird populations are better ...
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... biota for human appreciation . b ) To reduce sediment production from the watershed consistent with a ) , above . c ) To allow land use activities on the watershed that are appropriate to the rural character of the area and that are ...
... biota for human appreciation . b ) To reduce sediment production from the watershed consistent with a ) , above . c ) To allow land use activities on the watershed that are appropriate to the rural character of the area and that are ...
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... biota and their habitats while the last section discusses the avifauna . - - Existing Studies : The species structure of the Lagoon system has been adequately described in the studies of Chan ( 1967 ) and Gustafson ( 1968a , b , c ) ...
... biota and their habitats while the last section discusses the avifauna . - - Existing Studies : The species structure of the Lagoon system has been adequately described in the studies of Chan ( 1967 ) and Gustafson ( 1968a , b , c ) ...
Términos y frases comunes
aesthetic alternate April Army Corps Audubon Canyon Ranch Baccharis basin Berkeley biological biota biotic Board of Supervisors Bolinas Lagoon Bolinas Lagoon Watershed CALIFORNIA LIBRARY campus changes coastal scrub College Avenue College of Marin Colonel Boerger concrete channel concrete ditch Congress construction Corps of Engineers Corte Madera Creek Corte Madera Flood cost Creek Flood Control discussion diversity dredging ecological ecosystem egret environment evaluation fishing flood control project flood control zone Forest Service Gilliam grassland Idaho included Independent-Journal Kent Woodlands residents Larkspur Lawrence Halprin Madera Creek Flood Madera Flood Control mapped Marin County Marty Kent Jones natural plant communities predict recreation residents of Kent Roger Kent Salmon River salt marsh San Anselmo San Francisco Scenic Rivers species stream Tamalpais Creek UNIVERSITY OF CALIFORNIA University of Idaho vegetation water quality Water Resources watershed wild and scenic wild river wildlife