Table 5D.1. Summary of important observations necessary to an adaptive management approach for managing Columbia Basin salmon resources above Bonneville Dam. (Italicized traits are not being monitored routinely.)

ENVIRONMENT	SALMON LIFE STAGE	LOCATION	TRAIT (what we observe)	PARAMETER (what we learn)
Index Tributaries^a	Adult	Tributary mouth	Abundance^b	Escapement
			Length frequency^b	Age composition
			Sex ratio^b	Number females
	Adult, eggÆsmolt	Representative sites	Temperature, silt, riparian condition, etc.	Quality of habitat
	Parr	Within stream	Abundance^b	EggÆparr survival
	Smolt	Tributary mouth	Abundance^b	ParrÆsmolt survival
				EggÆsmolt survival
Mainstem	Smolt	Uppermost dam	Abundance	No. entering hydropower system
		Bonneville Dam	Abundance	Survival through hydropower system
	Parr, smolt	Representative sites	Pollutant levels, flow,riparian condition, temperature, etc.	Quality of habitat
Ocean	Subadult, adult	Various	Catch by fishery	Harvest rates
		Various	Temperature, upwelling, etc.^c	Index of natural survival
Mainstem	Adult	Lower river fishery	Catch	Harvest rate
		Bonneville Dam	Abundance	Return by species
		Zone 6 fishery	Catch	Harvest rate
		Intermediate dams	Abundance	Interdam losses by project
		Uppermost dam	Abundance	Total interdam loss
		Representative sites	Pollutant levels, flow, temperature, etc.	Quality of habitat

^a    Areas suitable for monitoring will be identified by the U.S. v Oregon Technical Advisory Committee
^b    Information is avilable in a few areas but is not collected for most stocks
^c    Information exists but has not been analyzed for application to salmon management

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