An Optical Imaging System for Capturing Images in Low-Light Aquatic Habitats Using Only Ambient Light.
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Pagniello, Camille M.L.S.
Roberts, Paul L.D.
Parnell, P. Edward
Jaffe, Jules S.
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It is preferable that methods for monitoring fish behavior, diversity, and abundance be noninvasive to avoid potential bias. Optical imaging facilitates the noninvasive monitoring of underwater environments and is best conducted without the use of artificial lighting. Here, we describe a custom-designed optical imaging system that utilizes a consumer-grade camera to capture images in situ in ambient light. This diver-deployed system can be used to collect time series of occurrences of animals while concurrently obtaining behavioral observations for two weeks to a month (depending on the sampling rate). It has also been configured to be paired with a passive acoustic system to record time-synchronized image and acoustic data. The system was deployed in a protected kelp forest off southern California and captured >1,500 high-quality images per day over 14 days. The images revealed numerous fish species exhibiting biologically important behaviors as well as daily patterns of presence/abse.....
Sustainable Development Goals (SDG)14.a
Essential Ocean Variables (EOV)Fish abundance and distribution
Maturity LevelPilot or Demonstrated
CitationPagniello, C.M.L.S., Butler, J., Rosen, A., Sherwood, A., Roberts, P.L.D., et al (2021) An optical imaging system for capturing images in low-light aquatic habitats using only ambient light. Oceanography 34(3), 7pp. DOI: https://doi.org/10.5670/oceanog.2021.305.
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