the role of science in water legislation and policy crisis drives science rice herbicides in the...
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The Role of Science in Water The Role of Science in Water Legislation and PolicyLegislation and Policy
Crisis Drives Science
• Rice Herbicides in the 1980’s
• Drinking Water Quality and the Delta
• Interagency Ecological Program and the Delta Fish Decline
• Founded in 1970
• 9 +2 member agencies
• http://water.ca.gov/iep
• Mission:• To ensure compliance with the water
quality objectives… and to reveal trends in ecological changes potentially related to project operations”
• Geographic focus on Delta & Suisun Bay
IEP: Interagency Ecological Program
Source DFG 2008 Fall MW Trawl; No sampling 1974 and 1979
Delta Smelt
0.0
0.3
0.6
0.9
1.2
1.5
1.8
66 68 70 72 74 76 78 80 82 84 86 88 90 92 94 96 98 00 02 04 06 08
(Th
ou
sa
nd
s)
Ab
un
da
nc
e In
de
x
Longfin Smelt
0
2
4
6
8
10
12
14
16
18
20
66 68 70 72 74 76 78 80 82 84 86 88 90 92 94 96 98 00 02 04 06 08
(Th
ou
sa
nd
s)
Ab
un
da
nc
e In
de
x
Striped Bass
0
5
10
15
20
66 68 70 72 74 76 78 80 82 84 86 88 90 92 94 96 98 00 02 04 06 08
(Th
ou
sa
nd
s)
Ab
un
da
nc
e In
de
x
Threadfin Shad
0
2
4
6
8
10
12
14
16
66 68 70 72 74 76 78 80 82 84 86 88 90 92 94 96 98 00 02 04 06 08
(Th
ou
sa
nd
s)
Ab
un
da
nc
e In
de
x
POD: Pelagic Organism DeclineNative Non-Native
Lowest
Lowest
POD Conceptual Model
FI SH ABUNDANCE
PHYSI CAL &
CHEMI CAL FI SH
HABI TAT
Prior Fish Abundance
BOTTOM-UP
Water
Diversions
Predation
Food availability
Food quality
Temperature Turbidity Salinity
Contaminants
Disease
Toxic algae
TOP-DOWN
Improve the Role Of Science?Improve the Role Of Science?
• Maintain Integrated Science Programs
• New Technologies =Better Data
• Issue Driven Research
• Information Transfer between Policy Makers and Research