Coho Life History in Tide Gated Lowland Coastal Streams, 2016-2018

Identification Information

Citation

Originator: Coos Watershed Association

Publish Date: 10/30/2018

Online Link: http://www.cooswatershed.org/

BPA Project #:

Contact Information

Agency: Watershed Councils

Name: Edward Hughes

Job Position: Monitoring Program Leader

Telephone: 541-888-5922 Ext. 304

E-Mail Address: ehughes@cooswatershed.org

Description

Abstract: Coos Watershed Association’s (CoosWA) coho life history in tide gated lowland coastal streams, a life cycle monitoring (LCM) project, examines the ecology of tidal rearing for coho in the Coos River Basin. This project has adapted to and advanced the recent paradigm shift in juvenile coho life histories, rearing and foraging strategies, growth, survival, migrations, and sub-basin level population productivity in the tidal zone. Temporal and spatial components of coho over-winter rearing strategies, in relation to habitat use and project effectiveness monitoring, is the monitoring focus in the paired study streams of Palouse and Willanch Creeks. Project results further reveal the fundamental mechanisms that promote juvenile coho growth and survival in the estuarine ecotone. In conjunction with prior and current data, results highlight the critical importance of these diverse habitats for recovering viable and resilient Oregon Coast coho populations.

Purpose: Goal is to better account for tidally rearing sub-populations of coho salmon in LCM monitoring and to identify alternate coho life history strategies

Time Period of Content: 2016-2018

Geographic Extent: Coos Bay estuary tributaries

Status: Final

Use Constraints:

Format: pdf

Data Quality Information

Lineage-Source: CoosWA follows the ODFW, Oregon Adult Salmonid Inventory Sampling (OASIS) protocol for adult salmon surveys and the Life Cycle Monitoring Program (LCMP) protocol for juvenile salmon surveys.

Data Information

Population	Indicators	Metrics
Coos River Coho	Natural origin spawner abundance; Recruits per spawner (adult); Smolt to adult ratio; Juvenile outmigrant abundance; Presmolt abundance; Recruits per spawner (juvenile)	Recruits; Survival rate; Total adult return; Total smolt outmigration; Total spawner abundance; Total spawners

Entity and Attribute Information

Attributes Description: Final Report with text and figures

Is a physical copy maintained for reference at Headquarters? Unknown