Difference between revisions of "GCDAMP- Questions and Answers Page"
From Glen Canyon Dam AMP
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| + | UNDER CONSTRUCTION: | ||
| + | *To be added: From Knowledge Assessment_"Assessing what we know and don't know_8-22-2011"- USGS | ||
| + | #The food web on which fish depend is very simple | ||
| + | #Availablitity of high-quality food resources limits fish populations- Black Flies and midges are the most important parts of the present food web. | ||
| + | #The mainstem Colorado River water temperature is typically well velow the termal optimum for native fishes, but recently has been warmer. | ||
| + | #Warming increases growth/ production of algae and invertebrates. | ||
| + | #Warming increases the growth rate of humpback chub. | ||
| + | #We don't understand the decline in RBT between 2001 and 2007. | ||
| + | #Rainbow and brown trout disproportionately prey on native fish. | ||
| + | WHAT WE DON'T KNOW-- | ||
| + | #Will warmer mainstem temperatures alone allow for increased survival of humpback chub? | ||
| + | #Do trout have substantial population-level effects on humpback chub? | ||
| + | #What ages of HBC are most impacted, and by what mechanisms? Competition, predation... | ||
| + | |||
| + | |||
== RAFTING RELATED == | == RAFTING RELATED == | ||
Revision as of 16:51, 20 December 2013
UNDER CONSTRUCTION:
- To be added: From Knowledge Assessment_"Assessing what we know and don't know_8-22-2011"- USGS
- The food web on which fish depend is very simple
- Availablitity of high-quality food resources limits fish populations- Black Flies and midges are the most important parts of the present food web.
- The mainstem Colorado River water temperature is typically well velow the termal optimum for native fishes, but recently has been warmer.
- Warming increases growth/ production of algae and invertebrates.
- Warming increases the growth rate of humpback chub.
- We don't understand the decline in RBT between 2001 and 2007.
- Rainbow and brown trout disproportionately prey on native fish.
WHAT WE DON'T KNOW--
- Will warmer mainstem temperatures alone allow for increased survival of humpback chub?
- Do trout have substantial population-level effects on humpback chub?
- What ages of HBC are most impacted, and by what mechanisms? Competition, predation...
Contents
RAFTING RELATED
- Do rafting groups get told not to cave-in sandbars?
SEDIMENT RELATED
- Sediment Retention: How do intervening flows effect retention of sand bars?
FISH RELATED
- How often do native fish get handled?
DAM- General Overview
- What resources have been improved because of the dam?
- Was there more or less vegetation along the river after GC Dam was built?
Monitoring
- How far back does the readings of the gauges go? Pre-dam?
Flow Regimes
- Do steady flows produce more trout?
- Do steady flows lead to increases in vegetation encroachment?
