Forestry & Environmental Management

Forest management impacts on stream integrity at varying intensities and spatial scales: Do biological effects accumulate spatially?

Erdozain M., Kidd K.A., Emilson E.J.S., Capell S.S., Luu T., Kreutzweiser D.P., Gray M.A.

Posted: April 8, 2021 12:00:00 AM ADT

Category: Publications, Research



Abstract: The effects of forest harvesting on headwaters are quite well understood, yet our understanding of whether impacts accumulate or dissipate downstream is limited. To address this, we investigated whether several biotic indicators changed from smaller to larger downstream sites (n = 6) within three basins that had intensive, extensive or minimal forest management in New Brunswick...

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Object and behavior differentiation for improved automated counts of migrating river fish using imaging sonar data

Helminen J., Linnansaari T.

Posted: April 8, 2021 12:00:00 AM ADT

Category: Publications, Research



Abstract: Imaging sonars, such as the Adaptive Resolution Imaging Sonar (ARIS; Sound Metrics Corp.) produce continuous stream of sonar video footage, and they are commonly used for counting and sizing migrating fish in rivers. Although automated methods have been developed for processing imaging sonar data, manual analysis of the data is still common in fish population monitoring projects. In...

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