Differentiation of two swim bladdered fish species using next generation wideband hydroacoustics

Abstract Monitoring fish populations in large, deep water bodies by conventional capture methodologies requires intensive fishing effort and often causes mass mortality of fish. Thus, it can be difficult to collect sufficient data using capture methods for understanding fine scale community dynamics...

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Autores principales:	Sarah M. Gugele, Marcus Widmer, Jan Baer, J. Tyrell DeWeber, Helge Balk, Alexander Brinker
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/65e8546948454b4baf2cd8f3e7ff1e6e
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spelling	oai:doaj.org-article:65e8546948454b4baf2cd8f3e7ff1e6e2021-12-02T14:59:06ZDifferentiation of two swim bladdered fish species using next generation wideband hydroacoustics10.1038/s41598-021-89941-72045-2322https://doaj.org/article/65e8546948454b4baf2cd8f3e7ff1e6e2021-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-89941-7https://doaj.org/toc/2045-2322Abstract Monitoring fish populations in large, deep water bodies by conventional capture methodologies requires intensive fishing effort and often causes mass mortality of fish. Thus, it can be difficult to collect sufficient data using capture methods for understanding fine scale community dynamics associated with issues such as climate change or species invasion. Hydroacoustic monitoring is an alternative, less invasive technology that can collect higher resolution data over large temporal and spatial scales. Monitoring multiple species with hydroacoustics, however, usually requires conventional sampling to provide species level information. The ability to identify the species identity of similar-sized individuals using only hydroacoustic data would greatly expand monitoring capabilities and further reduce the need for conventional sampling. In this study, wideband hydroacoustic technology was used in a mesocosm experiment to differentiate between free swimming, similar-sized individuals of two swim-bladdered species: whitefish (Coregonus wartmanni) and stickleback (Gasterosteus aculeatus). Individual targets were identified in echograms and variation in wideband acoustic responses among individuals, across different orientations, and between species was quantified and visually examined. Random forest classification was then used to classify individual targets of known species identity, and had an accuracy of 73.4% for the testing dataset. The results show that species can be identified with reasonable accuracy using wideband hydroacoustics. It is expected that further mesocosm and field studies will help determine capabilities and limitations for classifying additional species and monitoring fish communities. Hydroacoustic species differentiation may offer novel possibilities for fisheries managers and scientists, marking the next crucial step in non-invasive fish monitoring.Sarah M. GugeleMarcus WidmerJan BaerJ. Tyrell DeWeberHelge BalkAlexander BrinkerNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Sarah M. Gugele Marcus Widmer Jan Baer J. Tyrell DeWeber Helge Balk Alexander Brinker Differentiation of two swim bladdered fish species using next generation wideband hydroacoustics
description	Abstract Monitoring fish populations in large, deep water bodies by conventional capture methodologies requires intensive fishing effort and often causes mass mortality of fish. Thus, it can be difficult to collect sufficient data using capture methods for understanding fine scale community dynamics associated with issues such as climate change or species invasion. Hydroacoustic monitoring is an alternative, less invasive technology that can collect higher resolution data over large temporal and spatial scales. Monitoring multiple species with hydroacoustics, however, usually requires conventional sampling to provide species level information. The ability to identify the species identity of similar-sized individuals using only hydroacoustic data would greatly expand monitoring capabilities and further reduce the need for conventional sampling. In this study, wideband hydroacoustic technology was used in a mesocosm experiment to differentiate between free swimming, similar-sized individuals of two swim-bladdered species: whitefish (Coregonus wartmanni) and stickleback (Gasterosteus aculeatus). Individual targets were identified in echograms and variation in wideband acoustic responses among individuals, across different orientations, and between species was quantified and visually examined. Random forest classification was then used to classify individual targets of known species identity, and had an accuracy of 73.4% for the testing dataset. The results show that species can be identified with reasonable accuracy using wideband hydroacoustics. It is expected that further mesocosm and field studies will help determine capabilities and limitations for classifying additional species and monitoring fish communities. Hydroacoustic species differentiation may offer novel possibilities for fisheries managers and scientists, marking the next crucial step in non-invasive fish monitoring.
format	article
author	Sarah M. Gugele Marcus Widmer Jan Baer J. Tyrell DeWeber Helge Balk Alexander Brinker
author_facet	Sarah M. Gugele Marcus Widmer Jan Baer J. Tyrell DeWeber Helge Balk Alexander Brinker
author_sort	Sarah M. Gugele
title	Differentiation of two swim bladdered fish species using next generation wideband hydroacoustics
title_short	Differentiation of two swim bladdered fish species using next generation wideband hydroacoustics
title_full	Differentiation of two swim bladdered fish species using next generation wideband hydroacoustics
title_fullStr	Differentiation of two swim bladdered fish species using next generation wideband hydroacoustics
title_full_unstemmed	Differentiation of two swim bladdered fish species using next generation wideband hydroacoustics
title_sort	differentiation of two swim bladdered fish species using next generation wideband hydroacoustics
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/65e8546948454b4baf2cd8f3e7ff1e6e
work_keys_str_mv	AT sarahmgugele differentiationoftwoswimbladderedfishspeciesusingnextgenerationwidebandhydroacoustics AT marcuswidmer differentiationoftwoswimbladderedfishspeciesusingnextgenerationwidebandhydroacoustics AT janbaer differentiationoftwoswimbladderedfishspeciesusingnextgenerationwidebandhydroacoustics AT jtyrelldeweber differentiationoftwoswimbladderedfishspeciesusingnextgenerationwidebandhydroacoustics AT helgebalk differentiationoftwoswimbladderedfishspeciesusingnextgenerationwidebandhydroacoustics AT alexanderbrinker differentiationoftwoswimbladderedfishspeciesusingnextgenerationwidebandhydroacoustics
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Differentiation of two swim bladdered fish species using next generation wideband hydroacoustics

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