BPA Fish and Wildlife FY 1997 Proposal
Section 1. Administrative
Section 2. Narrative
Section 3. Budget
see CBFWA and BPA funding recommendations
Title of project
Estuary Physical and Biological Conditions
BPA project number 5517200
Business name of agency, institution or organization requesting funding
Sponsor type Placeholder
Proposal contact person or principal investigator
BPA technical contact ,
Biological opinion ID Research M&E Program; hyp C.1.4
NWPPC Program number
Influence of timing and duration of estuarine residence, hydro conditions, prey availability and estuarine habitat alterations on smolt survival.
Project start year 1997 End year 2007
Start of operation and/or maintenance 0
Project development phase PLANNING
Biological results achieved
Annual reports and technical papers
These studies of juvenile salmon ecology in the estuary will aid the resource manager discriminate between natural variability in survival and response to anthropogenic alterations.
Specific measureable objectives
Hypothesis C.1.4: Timing and duration of estuarine residence; and hydrologic conditions, prey availability, and habitat alterations in the estuary do not influence smolt survival
Underlying assumptions or critical constraints
Brief schedule of activities
Management agencies have long argued that the hydropower system and an altered hydrograph could cause smolts to arrive later in the estuary and out of synchrony with best conditions for survival. On the other hand, transportation has the potential to take some smolts to the estuary too early for best survival opportunities for particular demes. More information is needed on windows of opportunity for various demes. The length of stay and distribution of residence of subyearlings may be influenced by delay or acceleration of arrival in the estuary.
Many natural and anthropogenic factors affect the survival of juvenile salmon in the lower Columbia River. Because the transition from freshwater to saltwater requires critical physiological alterations by juvenile salmon, hydrologic and climatic conditions, including salinity, temperature, currents, and nutrient availability for primary and secondary production can influence survival. Certain biological variables may also effect smolt survival during this period, for example timing and duration of estuarine residence and prey availability. Numerous anthropogenic factors (including habitat loss and alteration, riverine discharges of agricultural, industrial and urban nutrients and toxic chemicals) also could affect the growth and survival of juvenile chinook salmon in the estuary. These studies of juvenile salmon ecology in the estuary will aid the resource manager discriminate between natural variability in survival and response to anthropogenic alterations.
Summary of expected outcome
Dependencies/opportunities for cooperation
|Historic costs||FY 1996 budget data*||Current and future funding needs|
|(none)||New project - no FY96 data available||1997: 1,000,000|
* For most projects, Authorized is the amount recommended by CBFWA and the Council. Planned is amount currently allocated. Contracted is the amount obligated to date of printout.
CBFWA funding review group System Policy
Recommendation Tier 2 - fund when funds available
Recommended funding level $1,000,000