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A Video Monitoring and Computational System for Estimating Migratory Juvenile Fish Abundance in River Systems by Meghna N. Marjadi; Sidney Batchelder; Ryan Govostes; Allison H. Roy; John J. Sheppard; Meghan‐Grace Slocombe; Joel K. Llopiz is a Environmental Science article available to read on EtoBox.
What is A Video Monitoring and Computational System for Estimating Migratory Juvenile Fish Abundance in River Systems about?
## Abstract Diadromous fishes migrate between marine and fresh waters for reproduction. For anadromous species, which spawn in freshwater, improved access to freshwater spawning and nursery habitats and ability of juveniles to emigrate to the ocean may support population recovery. Despite the potentially enormous influence of early life stage survival on adult population size, managers and scientists have limited capacity to assess numbers of juvenile anadromous fishes leaving freshwater ecosystems. Such data are critical for evaluating reproductive success and habitat suitability and have been identified as a top priority in anadromous fish research and management. We developed a state‐of‐the‐art underwater video and computational system to collect videos to estimate abundances and migration timing for juvenile river herring (__Alosa pseudoharengus__; __Alosa aestivalis__). We collected continuous video in the Monument River (Bourne, Massachusetts, USA) from June to November 2017. We trained three types of neural network models to detect and count fish in video frames and evaluated model performance by comparing human counts to model outputs. Our top model assessed presence and ab
Who reads A Video Monitoring and Computational System for Estimating Migratory Juvenile Fish Abundance in River Systems?
It is typically read by researchers, students, and practitioners in Environmental Science.
- Author
- Meghna N. Marjadi; Sidney Batchelder; Ryan Govostes; Allison H. Roy; John J. Sheppard; Meghan‐Grace Slocombe; Joel K. Llopiz
- Publisher
- Wiley
- Published
- 2024
- Language
- EN
- Field
- Environmental Science (Physical Sciences)