Modeling Climate and Hydropower Influences on the Movement Decisions of an Anadromous Species.

ABSTRACT: In large river basins, migratory fish populations are threatened by the combination of hydropower and climate change. With river temperatures rising and hydropower development increasing globally, the longstanding monitoring programs for threatened Pacific salmon populations in the Columbia River Basin present an opportunity to study these impacts over extended time scales. We fit a statistical model to 20 years of PIT-tagging data to jointly model the effects of temperature and dam operations (spill management) on the movement of Steelhead (anadromous Oncorhynchus mykiss) during their adult pre-spawn migration. We modeled the relationship between these factors and behaviors that pose mortality risks, including natal tributary overshoot (ascending a dam upstream of a natal tributary) and n

SUBMITTER: Min MA 

PROVIDER: S-EPMC12495376 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature