Mar 10, 2018 | Dolly Varden, Fish
Dolly Varden in Winter shows many adult and subadult Dolly Varden grouped together in a small open spot of an ice-covered lake. The dissolved oxygen dropped considerably in this lake and the Dolly Varden appear to be under stress. The dissolved oxygen levels measured...
Aug 20, 2016 | Dolly Varden, Salmon
In winter anchor ice can form in streams under certain conditions. This can be devastating to fish eggs and yolk sac young living in the gravel and to juvenile fish such as salmon and Dolly Varden living in the stream. This video could be used as an introduction to a...
Oct 24, 2015 | Dolly Varden, Fish
Some information on the Dolly Varden in Cropley Lake can be found in Juneau Fish Habitat Assessment by Bethers, Monk and Seifert and looking at page 34. More information about Cropley Lake can be found by looking at...
Mar 3, 2015 | Dipper, Dolly Varden
When salmon spawn they displace huge numbers of aquatic insects. These insects drift and swim downstream and often settle in pools containing woody debris. These are areas where salmon do not spawn so the insects are not disturbed by their spawning activities....
Feb 4, 2015 | Dolly Varden, Fish
This video shows a Dolly Varden sac fry that hatched just a few days ago. It will live in the stream bottom among the rocks for about two months. Then it will emerge from among the rocks and live in the stream and feed on aquatic insects. What will it eat while it...
Feb 3, 2015 | Dolly Varden, Salmon
The beginning of this video shows an aerial view of the winter habitat of juvenile fish within this stream. This video was taken on February 2, 2015 — a winter without much snow. The fish are concentrated in this one area that has numerous springs entering it....