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Managing for Long Term Sustainability of Seafood Production From Bottom Tendered Wild Capture Fisheries.

紀錄類型:	書目-語言資料,手稿 : Monograph/item
正題名/作者:	Managing for Long Term Sustainability of Seafood Production From Bottom Tendered Wild Capture Fisheries./
作者:	Smeltz, T. Scott, Jr.
面頁冊數:	1 online resource (156 pages)
附註:	Source: Dissertations Abstracts International, Volume: 85-03, Section: B.
Contained By:	Dissertations Abstracts International85-03B.
標題:	Biological oceanography. -
電子資源:	click for full text (PQDT)
ISBN:	9798380317108

Managing for Long Term Sustainability of Seafood Production From Bottom Tendered Wild Capture Fisheries.
Smeltz, T. Scott, Jr.

Managing for Long Term Sustainability of Seafood Production From Bottom Tendered Wild Capture Fisheries. - 1 online resource (156 pages)

Source: Dissertations Abstracts International, Volume: 85-03, Section: B.

Thesis (Ph.D.)--Cornell University, 2023.

Includes bibliographical references

Bottom fishing is an important source of anthropogenic disturbance affecting seafloor habitats across the world's continental shelves. Minimizing these disturbances is a key objective of ocean management; however, opportunities to meet this objective have been hampered by limited information on the spatiotemporal extent and dynamics of fishing impacts. To improve our ability to assess and understand impacts to seafloor habitats, we: 1) developed a flexible and cohesive framework (i.e., the 'Fishing Effects' model) to assess impacts over large spatial and temporal domains, 2) implemented the Fishing Effects model on regional and global scales, and 3) leveraged the Fishing Effects model within a statistical framework to better understand the disturbance dynamics of biogenic organisms. First, we developed the Fishing Effects model to estimate the areal extent of habitat disturbance that incorporates information on fishing activity, fishing gear characteristics, and vulnerabilities of seafloor habitat features. We implemented the model in the North Pacific, estimating that habitat in 3.1% of the 1.2 million km2 study area was disturbed through 2017. A 24% decline in habitat disturbance was evident since 2010 attributable to a single regulatory gear change which lifted trawl gear components off the seafloor. We then implemented this model globally, estimating that 2.9% (1.08 million km2) of the world's continental shelves are currently impacted by fishing - a level of impact we found comparable to land use for terrestrial-sourced protein. Finally, we developed a statistical framework that integrates the Fishing Effects model with species distribution models. The integrated modeling framework allows for estimation of the post-impact recovery times of biogenic organisms and their susceptibility to fishing disturbance. We applied the integrated model to deep water corals, sponges, and sea whips in the Eastern Bering Sea and estimated the mean recovery time to be 9 years, 7 years, and 1 year, respectively. Corals and sea whips were found to be twice as susceptible to removal from fishing disturbance compared to sponges. Ultimately, the tools developed here provide flexible frameworks to better address critical gaps in our understanding and assessment of seafloor habitats and promote sustainable management of wild caught fish.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2024

Mode of access: World Wide Web

ISBN: 9798380317108Subjects--Topical Terms:

1178855
Biological oceanography.
Subjects--Index Terms:

Benthic habitatsIndex Terms--Genre/Form:

554714
Electronic books.

Managing for Long Term Sustainability of Seafood Production From Bottom Tendered Wild Capture Fisheries.
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520 $a Bottom fishing is an important source of anthropogenic disturbance affecting seafloor habitats across the world's continental shelves. Minimizing these disturbances is a key objective of ocean management; however, opportunities to meet this objective have been hampered by limited information on the spatiotemporal extent and dynamics of fishing impacts. To improve our ability to assess and understand impacts to seafloor habitats, we: 1) developed a flexible and cohesive framework (i.e., the 'Fishing Effects' model) to assess impacts over large spatial and temporal domains, 2) implemented the Fishing Effects model on regional and global scales, and 3) leveraged the Fishing Effects model within a statistical framework to better understand the disturbance dynamics of biogenic organisms. First, we developed the Fishing Effects model to estimate the areal extent of habitat disturbance that incorporates information on fishing activity, fishing gear characteristics, and vulnerabilities of seafloor habitat features. We implemented the model in the North Pacific, estimating that habitat in 3.1% of the 1.2 million km2 study area was disturbed through 2017. A 24% decline in habitat disturbance was evident since 2010 attributable to a single regulatory gear change which lifted trawl gear components off the seafloor. We then implemented this model globally, estimating that 2.9% (1.08 million km2) of the world's continental shelves are currently impacted by fishing - a level of impact we found comparable to land use for terrestrial-sourced protein. Finally, we developed a statistical framework that integrates the Fishing Effects model with species distribution models. The integrated modeling framework allows for estimation of the post-impact recovery times of biogenic organisms and their susceptibility to fishing disturbance. We applied the integrated model to deep water corals, sponges, and sea whips in the Eastern Bering Sea and estimated the mean recovery time to be 9 years, 7 years, and 1 year, respectively. Corals and sea whips were found to be twice as susceptible to removal from fishing disturbance compared to sponges. Ultimately, the tools developed here provide flexible frameworks to better address critical gaps in our understanding and assessment of seafloor habitats and promote sustainable management of wild caught fish.
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