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Characterizing West Florida Shelf Re...

Hughes, Edmund A.,

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Characterizing West Florida Shelf Reef Fish Communities Using a Scientific Echosounder /

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Characterizing West Florida Shelf Reef Fish Communities Using a Scientific Echosounder // Edmund A Hughes.
作者:	Hughes, Edmund A.,
面頁冊數:	1 electronic resource (154 pages)
附註:	Source: Dissertations Abstracts International, Volume: 86-07, Section: B.
Contained By:	Dissertations Abstracts International86-07B.
標題:	Biological oceanography. -
電子資源:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=31639933
ISBN:	9798346885733

Characterizing West Florida Shelf Reef Fish Communities Using a Scientific Echosounder /
Hughes, Edmund A.,

Characterizing West Florida Shelf Reef Fish Communities Using a Scientific Echosounder /Edmund A Hughes. - 1 electronic resource (154 pages)

Source: Dissertations Abstracts International, Volume: 86-07, Section: B.

The advancement and application of non-invasive fisheries survey technologies, such as the scientific echosounder, have significantly enhanced our understanding of fish populations and their habitats, more recently in regions where traditional sampling methods are limited, such as complex reef habitats. This research, conducted as part of the Continental Shelf Characterization, Assessment, and Mapping Project (C-SCAMP) on the West Florida Shelf, leverages acoustic and visual technologies to investigate the distribution of fish densities, fish target strength and length relationships, and the relationship between seafloor topography and fish biomass distribution.The first study compared reef fish densities estimated from near-concurrent acoustic (Simrad EK60 split-beam echosounder, 38 kHz) and towed video methods across varying bathymetry and habitat types. The findings highlight the complementary strengths of these technologies in estimating fish densities, although their efficiency varied with habitat relief. The second study focused on gray snapper (Lutjanus griseus), examining its in-situ target strength (TS) and length relationships using a split-beam echosounder and stereo video systems. Two TS-Length models were developed, demonstrating the potential for accurate TS estimation without physical fish capture, showing potential for more efficient and non-invasive fishery assessments. The third study explored the relationship between seafloor rugosity and fish biomass in the Elbow region on the West Florida Shelf, using acoustic backscatter (Nautical Area Scattering Coefficient) as a proxy for biomass. The results indicated that more complex, rugose seafloor areas supported higher fish biomass, underscoring the importance of detailed acoustic surveys.Collectively, these studies demonstrate the value of integrating advanced acoustic and visual survey methods in marine ecological research, providing efficient, non-invasive, and critical insights for the sustainable management of fisheries resources on the West Florida Shelf and potentially elsewhere.

English

ISBN: 9798346885733Subjects--Topical Terms:

2122748
Biological oceanography.
Subjects--Index Terms:

Seafloor morphology

Characterizing West Florida Shelf Reef Fish Communities Using a Scientific Echosounder /
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520 $a The advancement and application of non-invasive fisheries survey technologies, such as the scientific echosounder, have significantly enhanced our understanding of fish populations and their habitats, more recently in regions where traditional sampling methods are limited, such as complex reef habitats. This research, conducted as part of the Continental Shelf Characterization, Assessment, and Mapping Project (C-SCAMP) on the West Florida Shelf, leverages acoustic and visual technologies to investigate the distribution of fish densities, fish target strength and length relationships, and the relationship between seafloor topography and fish biomass distribution.The first study compared reef fish densities estimated from near-concurrent acoustic (Simrad EK60 split-beam echosounder, 38 kHz) and towed video methods across varying bathymetry and habitat types. The findings highlight the complementary strengths of these technologies in estimating fish densities, although their efficiency varied with habitat relief. The second study focused on gray snapper (Lutjanus griseus), examining its in-situ target strength (TS) and length relationships using a split-beam echosounder and stereo video systems. Two TS-Length models were developed, demonstrating the potential for accurate TS estimation without physical fish capture, showing potential for more efficient and non-invasive fishery assessments. The third study explored the relationship between seafloor rugosity and fish biomass in the Elbow region on the West Florida Shelf, using acoustic backscatter (Nautical Area Scattering Coefficient) as a proxy for biomass. The results indicated that more complex, rugose seafloor areas supported higher fish biomass, underscoring the importance of detailed acoustic surveys.Collectively, these studies demonstrate the value of integrating advanced acoustic and visual survey methods in marine ecological research, providing efficient, non-invasive, and critical insights for the sustainable management of fisheries resources on the West Florida Shelf and potentially elsewhere.
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653 $a Fisheries
653 $a Camera-Based Assessment Survey
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