Decision support tool seeks to aid stream-flow recovery and enhance water security
AuthorsAdina M. Merenlender
Matthew J. Deitch
Authors AffiliationsA.M. Merenlender is Cooperative Extension Specialist, Integrated Hardwood Range Management Program, Department of Environmental Science. Policy and Management (ESPM), UC Berkeley; M.J. Deitch is Senior Environmental Scientist, Center for Ecosystem Management and Restoration, Oakland (formerly Postdoctoral Fellow, ESPM, UC Berkeley); S. Feirer is GIS analyst, UC Hopland Research and Extension Center. This research was funded in part by the U.S. Environmental Protection Agency (STAR grant G4K10732), and Sonoma County Water Agency. Our colleagues at UC Berkeley have been instrumental in developing some of these ideas: Juliet Christian-Smith. Ted Grantham. G. Matt Kondolf, Ruth Langridge, David Newburn and Vince Resh. We also thank the Salmon Coalition for their interest in applying our research.
Hilgardia 62(4):148-155. DOI:10.3733/ca.v062n04p148. October 2008.
In many parts of coastal California, agricultural water needs during the summer are met by tapping riparian and groundwater resources, which has led to documented decreases in stream flow during the dry season. This has consequences for salmon, including sudden drying of habitat, higher water temperatures and changes in the invertebrate prey base. We developed a new, spatially explicit analytical tool to quantify and map human and environmental needs, model daily stream-flow rates, and estimate regulatory flow requirements and cumulative impacts of reservoirs. This tool is part of a decision support system that can be integrated in a Geographic Information System (GIS) with other restoration considerations. This research provides a basis for placing additional reservoir storage where projects are not likely to affect adult salmon passage, while reducing water demand from surface and subsurface flows during spring and summer, ultimately improving both habitat for salmonids and water supply for growers.
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Also in this issue:Tip Length Models for Major Commercial California Conifers
Wine grapes go green: The Sustainable Viticulture Story
Research fuels sustainable viticulture revolution
Nest boxes can attract wildlife to vineyards
Agro-environmental partnerships facilitate sustainable wine-grape production and assessment
Sidebar: Interest in organic winegrowing is increasing
Innovative outreach increases adoption of sustainable winegrowing practices in Lodi region
Sidebar: Collaborative conservation helps achieve regional water-quantity goals
Leafroll disease is spreading rapidly in a Napa Valley vineyard
Botryosphaeria-related dieback and control investigated in noncoastal California grapevines
Sidebar: Vine surgery tested as management strategy for
Vineyard managers and researchers seek sustainable solutions for mealybugs, a changing pest complex
Sidebar: Pomace management reduces spread of vine mealybugs
Sidebar: Studies needed of vectors spreading leafroll disease in California vineyards
Liquid baits control Argentine ants sustainably in coastal vineyards
Vineyard floor management affects soil, plant nutrition, and grape yield and quality
Self-reseeding annual legumes evaluated as cover crops for untilled vineyards
Soil-landscape model helps predict potassium supply in vineyards
Vineyard nutrient needs vary with rootstocks and soils