Coho Life History in Tide Gated Lowland Streams 2014-2016_OWEB 214-2031

Identification Information

Citation

Originator: Coos Watershed Association

Publish Date: 12/5/2016

Online Link: None

BPA Project #:

Contact Information

Agency: Watershed Councils

Name: Edward Hughes

Job Position: Monitoring Coordinator

Telephone: 541-888-5922

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, adapts and advances a long-term monitoring study initiated in 2004 to explicitly examine coho salmon abundance, survival, life histories and habitat use in tide gated coastal lowland streams. Evidence from this project and across the range of coho strongly indicates that connectivity in diverse and dynamic tidal habitats provides alternative rearing pathways critical for the sustainability and recovery of Oregon Coastal (OC) coho stocks. Specifically, this project reestablished innovative PIT tag mark recapture techniques to monitor coho movements and migrations. Temporal and spatial components of over-winter rearing strategies, in relation to habitat use and project effectiveness monitoring, is the focus in these paired study streams. Notably, monitoring was shifted to Willanch Creek from Larson Creek. Juvenile coho diet analyses revealed seasonal and diurnal variation in foraging strategies between early migrating sub-yearlings and yearling smolts across their range in estuarine habitats. These results reveal the fundamental mechanisms that promote increased 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 OC coho populations.

Purpose: Toward better understanding of the fundamental mechanisms that promote increased juvenile coho growth and survival in the estuarine ecotone.

Time Period of Content: 2014-2016

Geographic Extent: northern coos county

Status: Final

Use Constraints:

Format: pdf

Data Quality Information

Lineage-Source: A combination of 8 years of LCM and mark recapture data that integrates FDX and HDX PIT/RFID tools and methods. Analysis is preliminary pending full integration of datasets into a unified database query's and analysis.

Data Information

No data information was supplied.

Entity and Attribute Information

Attributes Description: Project Completion Report

Is a physical copy maintained for reference at Headquarters? Unknown