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Analysis of brook trout spatial behavior during passage attempts in corrugated culverts using near-infrared illumination video imagery

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Abstract

We used video recording and near-infrared illumination to document the spatial behavior of brook trout of various sizes attempting to pass corrugated culverts under different hydraulic conditions. Semi-automated image analysis was used to digitize fish position at high temporal resolution inside the culvert, which allowed calculation of various spatial behavior metrics, including instantaneous ground and swimming speed, path complexity, distance from side walls, velocity preference ratio (mean velocity at fish lateral position/mean crosssectional velocity) as well as number and duration of stops in forward progression. The presentation summarizes the main results and discusses how they could be used to improve fish passage performance in culverts.

Additional publication details

Publication type Conference Paper
Publication Subtype Conference Paper
Title Analysis of brook trout spatial behavior during passage attempts in corrugated culverts using near-infrared illumination video imagery
Year Published 2016
Language English
Publisher Ecohydraulics 2016
Contributing office(s) Leetown Science Center
Description 4 p.
Conference Title 11th International Symposium on Ecohydraulics 2016
Conference Location Richmond, Victoria
Conference Date February 7-12, 2016