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Title: John Day Basin Spring Chinook Salmon Escapement and Productivity Monitoring; Fish Research Project Oregon, 1999-2000 Annual Report.

Abstract

The John Day River basin supports one of the healthiest populations of spring chinook salmon (Oncorhynchus tshawytscha) in the entire Columbia River basin. Spring chinook salmon in this basin are therefore, used as an important index stock to measure the effects of future management actions on other salmon stocks in the Columbia basin. To meet the data requirements as an index stock, we estimated annual spawner escapement, age-structure, and smolt-to-adult survival. This information will allow us to estimate progeny-to-parent production for each brood year. To estimate smolt-to-adult survival rates, 1,852 chinook smolts were tagged with PIT tags from 3 March to 5 May, 2000. Length of captured smolts varied, ranging from 80 to 147 mm fork length (mean = 113 mm). These fish will be monitored for PIT tags as returning adults at dams and during future spawning ground surveys. During spawning ground surveys, a total of 351.3 km of stream were surveyed resulting in the observation of 478 redds. When expanded, we estimated total number of redds at 481 and total number of spawners at 1,583 fish in the John Day River basin. We estimated that 13% of the redds were in the mainstem John Day, 27% in themore » Middle Fork, 34% in the North Fork, and 26% were in the Granite Creek basin. Sampled carcasses had a sex ratio comprised of 53% females and 47% males with an age structure comprised of 0.5% age-2, 6.3% age-3, 88.7% age-4, and 4.5% age-5 fish. Five of the 405 carcasses examined had fin clips suggesting they were of hatchery origin. The 1999 index redd count total for the North Fork, Mainstem, and Granite Creek was lower than the 1999 average (535) but well within the range of annual redd counts during this period. The index redd count for the Middle Fork was higher than the 1990's average (92) but considerably lower than the average from 1978-1985 (401). Although quite variable over the past 40 years, the number of redds in the John Day River basin during 1999 was well within the range of redd counts since they were initiated in 1959.« less

Authors:
; ;
Publication Date:
Research Org.:
Oregon Department of Fish and Wildlife
Sponsoring Org.:
US Bonneville Power Administration
OSTI Identifier:
796137
Report Number(s):
DOE/BP-00000498-1
TRN: US200213%%223
DOE Contract Number:  
00000498
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 1 Jan 2000
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; COLUMBIA RIVER BASIN; FEMALES; GRANITES; MALES; MONITORING; ORIGIN; PRODUCTIVITY; PROGRESS REPORT; RIVERS; SALMON; SEX RATIO; STREAMS; CHINOOK SALMON - SPAWNING - OREGON - JOHN DAY RIVER WATERSHED; CHINOOK SALMON - COUNTING.

Citation Formats

Ruzycki, James R, Wilson, Wayne H, and Carmichael, Richard W. John Day Basin Spring Chinook Salmon Escapement and Productivity Monitoring; Fish Research Project Oregon, 1999-2000 Annual Report.. United States: N. p., 2002. Web. doi:10.2172/796137.
Ruzycki, James R, Wilson, Wayne H, & Carmichael, Richard W. John Day Basin Spring Chinook Salmon Escapement and Productivity Monitoring; Fish Research Project Oregon, 1999-2000 Annual Report.. United States. https://doi.org/10.2172/796137
Ruzycki, James R, Wilson, Wayne H, and Carmichael, Richard W. 2002. "John Day Basin Spring Chinook Salmon Escapement and Productivity Monitoring; Fish Research Project Oregon, 1999-2000 Annual Report.". United States. https://doi.org/10.2172/796137. https://www.osti.gov/servlets/purl/796137.
@article{osti_796137,
title = {John Day Basin Spring Chinook Salmon Escapement and Productivity Monitoring; Fish Research Project Oregon, 1999-2000 Annual Report.},
author = {Ruzycki, James R and Wilson, Wayne H and Carmichael, Richard W},
abstractNote = {The John Day River basin supports one of the healthiest populations of spring chinook salmon (Oncorhynchus tshawytscha) in the entire Columbia River basin. Spring chinook salmon in this basin are therefore, used as an important index stock to measure the effects of future management actions on other salmon stocks in the Columbia basin. To meet the data requirements as an index stock, we estimated annual spawner escapement, age-structure, and smolt-to-adult survival. This information will allow us to estimate progeny-to-parent production for each brood year. To estimate smolt-to-adult survival rates, 1,852 chinook smolts were tagged with PIT tags from 3 March to 5 May, 2000. Length of captured smolts varied, ranging from 80 to 147 mm fork length (mean = 113 mm). These fish will be monitored for PIT tags as returning adults at dams and during future spawning ground surveys. During spawning ground surveys, a total of 351.3 km of stream were surveyed resulting in the observation of 478 redds. When expanded, we estimated total number of redds at 481 and total number of spawners at 1,583 fish in the John Day River basin. We estimated that 13% of the redds were in the mainstem John Day, 27% in the Middle Fork, 34% in the North Fork, and 26% were in the Granite Creek basin. Sampled carcasses had a sex ratio comprised of 53% females and 47% males with an age structure comprised of 0.5% age-2, 6.3% age-3, 88.7% age-4, and 4.5% age-5 fish. Five of the 405 carcasses examined had fin clips suggesting they were of hatchery origin. The 1999 index redd count total for the North Fork, Mainstem, and Granite Creek was lower than the 1999 average (535) but well within the range of annual redd counts during this period. The index redd count for the Middle Fork was higher than the 1990's average (92) but considerably lower than the average from 1978-1985 (401). Although quite variable over the past 40 years, the number of redds in the John Day River basin during 1999 was well within the range of redd counts since they were initiated in 1959.},
doi = {10.2172/796137},
url = {https://www.osti.gov/biblio/796137}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 2002},
month = {Tue Jan 01 00:00:00 EST 2002}
}