Distribution and Spawning Behavior of Hatchery and Natural Chinook Salmon in the Upper Ends of Idaho's South Fork Salmon and Salmon Rivers
Title | Distribution and Spawning Behavior of Hatchery and Natural Chinook Salmon in the Upper Ends of Idaho's South Fork Salmon and Salmon Rivers PDF eBook |
Author | Paul M. Sankovich |
Publisher | |
Pages | 182 |
Release | 1995 |
Genre | Chinook salmon |
ISBN |
Distribution and Spawning Behavior of Hatchery and Natural Adult Chinook Salmon Released Upstream of Weirs in Two Idaho Rivers
Title | Distribution and Spawning Behavior of Hatchery and Natural Adult Chinook Salmon Released Upstream of Weirs in Two Idaho Rivers PDF eBook |
Author | Paul M. Sankovich |
Publisher | |
Pages | 35 |
Release | 1992 |
Genre | Chinook salmon |
ISBN |
Spawning Distribution of Outplanted Adult Summer Chinook Salmon in the South Fork Salmon River, 1992-1994
Title | Spawning Distribution of Outplanted Adult Summer Chinook Salmon in the South Fork Salmon River, 1992-1994 PDF eBook |
Author | Paul M. Sankovich |
Publisher | |
Pages | 21 |
Release | 1999 |
Genre | Chinook salmon |
ISBN |
Spawning Success of Hatchery Spring Chinook Salmon Outplanted as Adults in the Clearwater River Basin, Idaho, 2001
Title | Spawning Success of Hatchery Spring Chinook Salmon Outplanted as Adults in the Clearwater River Basin, Idaho, 2001 PDF eBook |
Author | |
Publisher | |
Pages | 73 |
Release | 2002 |
Genre | |
ISBN |
The study described in this report evaluated spawning distribution, overlap with naturally-arriving spawners, and pre-spawning mortality of spring chinook salmon, Oncorhynchus tshawytscha, outplanted as adults in the Clearwater River Subbasin in 2001. Returns of spring chinook salmon to Snake River Basin hatcheries and acclimation facilities in 2001 exceeded needs for hatchery production goals in Idaho. Consequently, management agencies including the U.S. Fish and Wildlife Service (FWS), Idaho Department of Fish and Game (IDFG) and Nez Perce Tribe (NPT) agreed to outplant chinook salmon adults as an adaptive management strategy for using hatchery adults. Adult outplants were made in streams or stream sections that have been typically underseeded with spawners. This strategy anticipated that outplanted hatchery chinook salmon would spawn successfully near the areas where they were planted, and would increase natural production. Outplanting of adult spring chinook salmon from hatcheries is likely to be proposed in years when run sizes are similar to those of the 2001 run. Careful monitoring of results from this year's outplanting can be used to guide decisions and methods for future adult outplanting. Numbers of spring chinook salmon outplanted was based on hatchery run size, hatchery needs, and available spawning habitat. Hatcheries involved in outplanting in the Clearwater Basin included Dworshak National Fish Hatchery, Kooskia National Fish Hatchery, Clearwater Anadromous Fish Hatchery, and Rapid River Fish Hatchery. The NPT, IDFG, FWS, and the National Marine Fisheries Service (NMFS) agreed upon outplant locations and a range of numbers of spring chinook salmon to be outplanted (Table 1). Outplanting occurred mainly in the Selway River Subbasin, but additional outplants were made in tributaries to the South Fork Clearwater River and the Lochsa River (Table 1). Actual outplanting activities were carried out primarily by the NPT with supplemental outplanting done in the Lochsa basin by IDFG. Fish were trucked from the hatcheries to outplant sites.
Annual Report
Title | Annual Report PDF eBook |
Author | University of Idaho. Forest, Wildlife, and Range Experiment Station |
Publisher | |
Pages | 52 |
Release | 1994 |
Genre | Forests and forestry |
ISBN |
An Evaluation of Spawning Habitat Site Selection Among Upper South Fork Salmon River Chinook Salmon
Title | An Evaluation of Spawning Habitat Site Selection Among Upper South Fork Salmon River Chinook Salmon PDF eBook |
Author | Kara E. Collier |
Publisher | |
Pages | 84 |
Release | 2014 |
Genre | Salmon |
ISBN |
Energy Use, Migration Times, and Spawning Success of Adult Spring-summer Chinook Salmon Returning to Spawning Areas in the South Fork Salmon River in Central Idaho, 2002-2007
Title | Energy Use, Migration Times, and Spawning Success of Adult Spring-summer Chinook Salmon Returning to Spawning Areas in the South Fork Salmon River in Central Idaho, 2002-2007 PDF eBook |
Author | Ryan D. Mann |
Publisher | |
Pages | 73 |
Release | 2008 |
Genre | Chinook salmon |
ISBN |
"Adult Chinook salmon, Oncorhynchus tshawytscha, must pass eight hydroelectric dams and reservoirs and migrate more than 1000 river kilometers to reach spawning grounds in the South Fork Salmon River in central Idaho. Behavior during migration, energy depletion, and ultimately reproductive success may be affected by river conditions (e.g. temperature and flow) and dam operations (e.g. spill) within the migration corridor. In this study we examined the energy use of migrating adult Chinook salmon through the Columbia and Snake Rivers in order to investigate the relationships between initial fish condition, migration experience, and river conditions, and eventual migration and spawning success. As part of this research, we also tested non-lethal methods to estimate adult salmon energy condition."--Preface (page ii).