Tuesday, March 15, 2011

Counting Salmon - Part 7, Tagging Salmon

Arnie came in to help at the height of the Red Salmon run. We set up a small tapered net to catch salmon smolt, newly hatched salmon making their way to sea. The net funneled the smolt into a small chamber which we emptied everyday. We counted and measured the smolt and included the info with our nightly report.
A wide bend with a deep hole lay further down stream. I often walked up the gentle slope behind the cabin to the high ground overlooking it. The high perch gave me a bird’s eye view of the large schools that congregated there, sometimes in the thousands, swimming in slow circles before continuing upstream.The three of us spent several days tagging fish. We used a purse seine to catch them. A purse seine has lead weights on bottom and cork floats on top. Ours was maybe a hundred feet long, and six feet deep. A person would see only the top row of corks if it lay straight in the water . It would look like a six foot fence below the waterline. We anchored one end to shore, and using the boat, pulled the other in a wide arc encircling a number of fish. The net was taken in and soon there would be fifty salmon thrashing about in the shallow water. We would toss a dozen salmon at a time into the tagging box which sat close to shore in a foot of water.The fish were “tagged” with round plastic disks. Different colored disks might be used at different times and places. Each was two inches in diameter with a hole in the center. Arnie would place a disk just below the dorsal fin, shove a pin through it, the fish, and through another disk, then bend the pin with pliers. A survey of the upper river would be conducted by the ADF&G in September. They would register the locations along the stream where the tagged fish were found.

GO TO: Part 8, A Fisherman's Paradise

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