Stream fish

In the Kuparuk River and Oksrukuyik Creek, the only fish present in the study reaches is Arctic grayling (Thymallus arcticus), although lake trout (Salvelinus namaycush) occur in the headwater lakes of the Kuparuk River, where Arctic grayling migration studies are conducted, and the New Reach streams may have different fish assemblages. Throughout the summer, different age classes of Arctic grayling are collected from each stream. Young of the year (YOY) grayling are collected by dipnet and by electrofishing, while juvenile and adult grayling are collected by angling. Seasonal growth of the different age classes is measured over the course of each summer via weekly collections of YOY and tag/recovery of juveniles and adults. In this way, we are able to determine if the fertilizations of the streams influence fish growth.

There are also files from several years that contain information on the overwintering of Kuparuk River Arctic grayling in the Kuparuk's lowest headwater lake. The grayling enter the lake in the fall of each year and overwinter before returning to the river in the spring. As grayling enter the lake in the fall, they are captured, tagged, measured, and weighed. The following spring, grayling are recaptured to determine overwintering effects on their size. The principal investigator in charge of stream fish studies is Dr. Linda Deegan.

The menu below provides a complete list of stream fish files. Consult the brief descriptor following each file name for the information contained in each file. Clicking on a file name will send you to a document file that describes the method in which the data were collected; from the document file, you can access the data file by clicking on the hypertext data file name.

• 00dekgro - Comparison of Arctic grayling growth in fertilized and unfertilized reaches of the Kuparuk river, June-August 2000.

• 00dektag - The 2000 addition to the long-term tagging file for arctic grayling on the Kuparuk River.

• 00dekyoy - Comparison of YOY grayling growth in fertilized and unfertilized reaches of the Kuparuk river, July-August 2000.

• 00deogro - Comparison of Arctic grayling growth in Oksrukuyik Creek, July-August 2000.

• 00deotag - The 2000 addition to the long-term tagging file for arctic grayling in Oksrukuyik Creek.

• 00deoyoy - Comparison of YOY grayling growth in designated fertilized and unfertilized reaches of Oksrukuyik Creek, July-August 2000.

• 01dekgro - Comparison of Arctic grayling growth in fertilized and unfertilized reaches of the Kuparuk river, June-August 2000.

• 01dektag - The 2001 addition to the long-term tagging file for arctic grayling on the Kuparuk River.

• 01dekyoy - Comparison of YOY grayling growth in fertilized and unfertilized reaches of the Kuparuk river, July-August 2000.

• 01deogro - Comparison of Arctic grayling growth in Oksrukuyik Creek, July-August 2000.

• 01deotag - The 2001 addition to the long-term tagging file for arctic grayling in Oksrukuyik Creek.

• 01deoyoy - Comparison of YOY grayling growth in designated fertilized and unfertilized reaches of Oksrukuyik Creek, July-August 2000.

• 02dekgro - Comparison of Arctic grayling growth in fertilized and unfertilized reaches of the Kuparuk river, June-August 2002.

• 02dektag - The 2002 addition to the long-term tagging file for arctic grayling on the Kuparuk River.

• 02dekyoy - Comparison of YOY grayling growth in fertilized and unfertilized reaches of the Kuparuk river, July-August 2002.

• 02deotag - The 2002 addition to the long-term tagging file for arctic grayling in Oksrukuyik Creek.

• 02deoyoy - Comparison of YOY grayling growth in designated fertilized and unfertilized reaches of Oksrukuyik Creek, July-August 2002.

• 03dekgro - Comparison of Arctic grayling growth in fertilized and unfertilized reaches of the Kuparuk river, June-August 2003.

• 03dekyoy - Comparison of YOY grayling growth in fertilized, recovery and unfertilized reaches of the Kuparuk river, July-August 2003.

• 03deoyoy - Comparison of YOY grayling growth in designated recovery and unfertilized reaches of Oksrukuyik Creek, July-August 2003.

• 2003_currentdektag - 2003 to current long-term tagging file for arctic grayling on the Kuparuk River. All grayling adults and juveniles captured during the field season are measured, weighed, tagged and released.

• 85dektag - The 1985 addition to the long-term tagging file for arctic grayling on the Kuparuk River.

• 85dekyoy - Comparison of YOY grayling growth in fertilized and unfertilized reaches of the Kuparuk river, June-August 1985.

• 86dekgro - Comparison of Arctic grayling growth in fertilized and unfertilized reaches of the Kuparuk river, June-August 1986.

• 86dektag - The 1986 addition to the long-term tagging file for arctic grayling on the Kuparuk River.

• 86dekyoy - Comparison of YOY grayling growth in fertilized and unfertilized reaches of the Kuparuk river, July-August 1986.

• 87dektag - The 1987 addition to the long-term tagging file for arctic grayling on the Kuparuk River.

• 87dekyoy - Comparison of YOY grayling growth in fertilized and unfertilized reaches of the Kuparuk river, June-August 1987.

• 87delake - Data collected in the fall to determine effects of overwintering on grayling growth and lipid storage. Similar data are collected in the spring as the fish leave the lake.

• 88dehltg - The 1988 headwater lake addition to the long-term tagging file for arctic grayling on the Kuparuk River.

• 88dekgro - Comparison of arctic grayling growth in fertilized and unfertilized sections of the Kuparuk River, at high and low fish density.

• 88dektag - The 1988 river addito\ion to the long-term tagging file for arctic grayling on the kuparuk river.

• 88dekyoy - Comparison of YOY grayling growth in fertilized and unfertilized reaches of the Kuparuk River, June-August 1988.

• 89dekgro - Co,parison of arctic grayling growth in fertilized and unfertilized reaches of the Kuparuk river, June-August 1989

• 89dektag - The 1989 addition to the long-term tagging file for arctic grayling on the Kuparuk River.

• 89dekyoy - Comparison of YOY grayling growth in fertilized and unfertilized reaches of the Kuparuk river, June-August 1989.

• 89delake - Data collected in the fall to determine effects of overwintering on grayling growth and lipid storage. Similar data are collected in the spring as the fish leave the lake.

• 89deotag - The 1989 addition to the long-term tagging file for arctic grayling on Oksrukuyuk Creek.

• 89deoyoy - YOY grayling growth in Oksrukuyuk Creek, 1989

• 90dehltg - The 1988 headwater lake addition to the long-term tagging file for arctic grayling on the Kuparuk River.

• 90dekgro - Comparison of Arctic grayling growth in fertilized and unfertilized reaches of the Kuparuk river, June-August 1990.

• 90dektag - The 1990 addition to the long-term tagging file for arctic grayling on the Kuparuk River.

• 90dekyoy - Comparison of YOY grayling growth in fertilized and unfertilized reaches of the Kuparuk river, June-August 1990.

• 90delake - The 1990 headwater lake addition to the long-term tagging file for arctic grayling on the Kuparuk River.

• 90deogro - Comparison of Arctic grayling growth in designated fertilized and unfertilized reaches of Oksrukuyik Creek, June-August 1990.

• 90deotag - The 1990 addition to the long-term tagging file for arctic grayling in Oksrukuyik Creek.

• 90deoyoy - Comparison of YOY grayling growth in designated fertilized and unfertilized reaches of Oksrukuyik Creek, June-August 1990.

• 91dekgro - Comparison of Arctic grayling growth in fertilized and unfertilized reaches of the Kuparuk river, June-August 1991.

• 91dektag - The 1991 addition to the long-term tagging file for arctic grayling on the Kuparuk River.

• 91dekyoy - Comparison of YOY grayling growth in fertilized and unfertilized reaches of the Kuparuk river, June-August 1990.

• 91deogro - Comparison of Arctic grayling growth in designated fertilized and unfertilized reaches of Oksrukuyik Creek, June-August 1991."

• 91deotag - The 1991 addition to the long-term tagging file for arctic grayling in Oksrukuyik Creek.

• 91deoyoy - Comparison of YOY grayling growth in designated fertilized and unfertilized reaches of Oksrukuyik Creek, June-August 1991.

• 92dekgro - Comparison of Arctic grayling growth in fertilized and unfertilized reaches of the Kuparuk river, June-August 1992.

• 92dektag - The 1992 addition to the long-term tagging file for arctic grayling on the Kuparuk River.

• 92dekyoy - Comparison of YOY grayling growth in fertilized and unfertilized reaches of the Kuparuk river, June-August 1992."

• 92delake - The 1992 headwater lake addition to the long-term tagging file for arctic grayling on the Kuparuk River.

• 92deogro - Comparison of Arctic grayling growth in designated fertilized and unfertilized reaches of Oksrukuyik Creek, June-August 1992.

• 92deotag - The 1992 addition to the long-term tagging file for arctic grayling in Oksrukuyik Creek.

• 92deoyoy - Comparison of YOY grayling growth in designated fertilized and unfertilized reaches of Oksrukuyik Creek, June-August 1992.

• 93dekgro - Comparison of Arctic grayling growth in fertilized and unfertilized reaches of the Kuparuk river, June-August 1993.

• 93dektag - The 1993 addition to the long-term tagging file for arctic grayling on the Kuparuk River.

• 93dekyoy - Comparison of YOY grayling growth in fertilized and unfertilized reaches of the Kuparuk river, June-August 1993.

• 93deogro - Comparison of Arctic grayling growth in designated fertilized and unfertilized reaches of Oksrukuyik Creek, June-August 1993.

• 93deotag - The 1993 addition to the long-term tagging file for arctic grayling in Oksrukuyik Creek.

• 93deoyoy - Comparison of YOY grayling growth in designated fertilized and unfertilized reaches of Oksrukuyik Creek, June-August 1993.

• 94dekgro - Comparison of Arctic grayling growth in fertilized and unfertilized reaches of the Kuparuk river, June-August 1994.

• 94dektag - The 1994 addition to the long-term tagging file for arctic grayling on the Kuparuk River.

• 94dekyoy - Comparison of YOY grayling growth in fertilized and unfertilized reaches of the Kuparuk river, June-August 1994.

• 94deogro - Comparison of Arctic grayling growth in designated fertilized and unfertilized reaches of Oksrukuyik Creek, June-August 1994.

• 94deotag - The 1994 addition to the long-term tagging file for arctic grayling in Oksrukuyik Creek.

• 94deoyoy - Comparison of YOY grayling growth in designated fertilized and unfertilized reaches of Oksrukuyik Creek, June-August 1994.

• 95dekgro - Comparison of Arctic grayling growth in fertilized and unfertilized reaches of the Kuparuk river, June-August 1995.

• 95dektag - The 1995 addition to the long-term tagging file for arctic grayling on the Kuparuk River.

• 95dekyoy - Comparison of YOY grayling growth in fertilized and unfertilized reaches of the Kuparuk river, June-August 1995.

• 95delake - The 1995 headwater lake addition to the long-term tagging file for arctic grayling on the Kuparuk River.

• 95deogro - Comparison of Arctic grayling growth in designated fertilized and unfertilized reaches of Oksrukuyik Creek, June-August 1995.

• 95deotag - The 1995 addition to the long-term tagging file for arctic grayling in Oksrukuyik Creek.

• 95deoyoy - Comparison of YOY grayling growth in designated fertilized and unfertilized reaches of Oksrukuyik Creek, June-August 1995.

• 96dekgro - Comparison of Arctic grayling growth in fertilized and unfertilized reaches of the Kuparuk river, June-August 1996.

• 96dektag - The 1996 addition to the long-term tagging file for arctic grayling on the Kuparuk River.

• 96dekyoy - Comparison of YOY grayling growth in fertilized and unfertilized reaches of the Kuparuk river, June-August 1996.

• 96deogro - Comparison of Arctic grayling growth in designated fertilized and unfertilized reaches of Oksrukuyik Creek, June-August 1996.

• 96deotag - The 1996 addition to the long-term tagging file for arctic grayling in Oksrukuyik Creek.

• 96deoyoy - Comparison of YOY grayling growth in designated fertilized and unfertilized reaches of Oksrukuyik Creek, June-August 1996.

• 97dekgro - Comparison of Arctic grayling growth in fertilized and unfertilized reaches of the Kuparuk river, June-August 1997.

• 97dektag - The 1997 addition to the long-term tagging file for arctic grayling on the Kuparuk River.

• 97dekyoy - Comparison of YOY grayling growth in fertilized and unfertilized reaches of the Kuparuk river, June-August 1997.

• 97deogro - Comparison of Arctic grayling growth in designated fertilized and unfertilized reaches of Oksrukuyik Creek, June-August 1997.

• 97deotag - The 1997 addition to the long-term tagging file for arctic grayling in Oksrukuyik Creek.

• 97deoyoy - Comparison of YOY grayling growth in designated fertilized and unfertilized reaches of Oksrukuyik Creek, June-August 1997.

• 98dekgro - Comparison of Arctic grayling growth in fertilized and unfertilized reaches of the Kuparuk river, June-August 1998.

• 98dektag - The 1998 addition to the long-term tagging file for arctic grayling on the Kuparuk River.

• 98dekyoy - Comparison of YOY grayling growth in fertilized and unfertilized reaches of the Kuparuk river, July-August 1998.

• 98deogro - Comparison of Arctic grayling growth in designated fertilized and unfertilized reaches of Oksrukuyik Creek, July-August 1998.

• 98deotag - The 1998 addition to the long-term tagging file for arctic grayling in Oksrukuyik Creek.

• 98deoyoy - Comparison of YOY grayling growth in designated fertilized and unfertilized reaches of Oksrukuyik Creek, July-August 1998.

• 99dekgro - Comparison of Arctic grayling growth in fertilized and unfertilized reaches of the Kuparuk river, June-August 1999.

• 99dektag - The 1998 addition to the long-term tagging file for arctic grayling on the Kuparuk River.

• 99dekyoy - Comparison of YOY grayling growth in fertilized and unfertilized reaches of the Kuparuk river, July-August 1999.

• 99delake - The 1999 headwater lake addition to the long-term tagging file for arctic grayling on the Kuparuk River.

• 99deogro - Comparison of Arctic grayling growth in designated fertilized and unfertilized reaches of Oksrukuyik Creek, July-August 1999.

• 99deotag - The 1999 addition to the long-term tagging file for arctic grayling in Oksrukuyik Creek.

• 99deoyoy - Comparison of YOY grayling growth in designated fertilized and unfertilized reaches of Oksrukuyik Creek, July-August 1999.