DFO Ibex Salmon census, old redds, re-establishing populations
We installed two data loggers in the Ibex river above and below the confluence of the Arkel River. These were placed in the Ibex in November 1999 and picked up in May 2000. We logged temperatures in the stream to see whether there was a warming ground water influence in the Ibex because of the flow from the Arkel. Data was collected over a seven month period. These data show a period when stream temperatures dropped to 0 degrees c for about fifty days. This is a shorter period than recorded near the mouth of the Ibex. Temperature data: The data below shows the temperatures in the stream side incubators. The first graph shows the temperature within the incubator while the second graph shows the air temperature within the incubator. Note: The temperature in both cases remains above o degree c at all times. This information was collected using an ONSET Tidbit temperature data logger over a four month period.
In 1998, Pat Milligan (DFO) and Bob Sharp flew the Ibex and Takhini rivers looking for spawning salmon and old redds. A number with identified on the ibex affirming the salmon presence on the system. Jim Boyd, Bob Sharp and Kevin O’Connor paddled the river and walked sections looking for spawning salmon. As part of this process, Bob Sharp applied for and received a HRSEP (Habitat Restoration and Salmon Enhancement Program) grant from the DFO of $5500 for each year for a five year period. These funds covered costs of the survey and equipment needed to build the in-stream incubators.
Community interest or concern The HRSEP program was created to community requests to protect and enhance salmon populations. This has long been a goal of Yukon schools as well.
Duration of study and numbers involved This study went on for six years, It never really stopped, only it became less of a priority of subsequent ES11 teachers. The site takes more than two hours to reach and can only be reached during summer months. On old forest fire crated a number of trail challenges so a trail was cut through the deadfall and along the valley ridges.
Protocols followed and resources. We followed the protocols outlined by the Quimsan Hatchers in Campbell River BC for the construction of the in-stream incubators except we used plastic 45 gal food safe drums rather than Aluminum boxes because of freezing and ductility issues.
Contact person and more detailed information Bob Sharp, Jim Boyde and Pat Milligan (DFO retired)
We installed two data loggers in the Ibex river above and below the confluence of the Arkel River. These were placed in the Ibex in November 1999 and picked up in May 2000. We logged temperatures in the stream to see whether there was a warming ground water influence in the Ibex because of the flow from the Arkel. Data was collected over a seven month period. These data show a period when stream temperatures dropped to 0 degrees c for about fifty days. This is a shorter period than recorded near the mouth of the Ibex. Temperature data: The data below shows the temperatures in the stream side incubators. The first graph shows the temperature within the incubator while the second graph shows the air temperature within the incubator. Note: The temperature in both cases remains above o degree c at all times. This information was collected using an ONSET Tidbit temperature data logger over a four month period.
In 1998, Pat Milligan (DFO) and Bob Sharp flew the Ibex and Takhini rivers looking for spawning salmon and old redds. A number with identified on the ibex affirming the salmon presence on the system. Jim Boyd, Bob Sharp and Kevin O’Connor paddled the river and walked sections looking for spawning salmon. As part of this process, Bob Sharp applied for and received a HRSEP (Habitat Restoration and Salmon Enhancement Program) grant from the DFO of $5500 for each year for a five year period. These funds covered costs of the survey and equipment needed to build the in-stream incubators.
Community interest or concern The HRSEP program was created to community requests to protect and enhance salmon populations. This has long been a goal of Yukon schools as well.
Duration of study and numbers involved This study went on for six years, It never really stopped, only it became less of a priority of subsequent ES11 teachers. The site takes more than two hours to reach and can only be reached during summer months. On old forest fire crated a number of trail challenges so a trail was cut through the deadfall and along the valley ridges.
Protocols followed and resources. We followed the protocols outlined by the Quimsan Hatchers in Campbell River BC for the construction of the in-stream incubators except we used plastic 45 gal food safe drums rather than Aluminum boxes because of freezing and ductility issues.
Contact person and more detailed information Bob Sharp, Jim Boyde and Pat Milligan (DFO retired)