Estimating Sea Scallop Incidental Mortality From Photogrammetric Before After Control Impact Surveys

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Estimating Sea Scallop Incidental Mortality from Photogrammetric Before-after-control-impact Surveys

Author : Danielle Marie Ferraro
Publisher :
ISBN 13 : 9781369594706
Total Pages : 103 pages
Book Rating : 4.5/5 (947 download)

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Book Synopsis Estimating Sea Scallop Incidental Mortality from Photogrammetric Before-after-control-impact Surveys by : Danielle Marie Ferraro

Download or read book Estimating Sea Scallop Incidental Mortality from Photogrammetric Before-after-control-impact Surveys written by Danielle Marie Ferraro and published by . This book was released on 2017 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt: After several decades of stock decline, the Atlantic sea scallop (Placopecten magellanicus) fishery is one of the most valuable in the United States due in part to the implementation of new management measures in 1994. The continued sustainability of the fishery is dependent on catch limits determined by yearly stock projection models. Incidental mortality is an important term in sea scallop stock projection models, but is historically difficult to measure. Current estimates are derived from experiments that relied heavily on qualitative observations and as a result lack precision. To better estimate incidental mortality, I used a Multiple-Before-After-Control-Impact (MBACI) experimental design to measure the effect of scallop dredging on the disposition of sea scallops that remain on the seafloor following dredging. An autonomous underwater vehicle (AUV) was employed to collect color photos and side-scan sonar images of the seafloor before and after controlled dredge treatments in the Mid-Atlantic and Georges Banks regions. Approximately 170,000 photos were annotated for instances of dredge-induced mortality. I found 2.5% and 8% incidental mortality for the Mid-Atlantic Bight and Georges Banks sites, respectively, a difference that is likely attributable to the relatively harder substrate of the scallop habitat on Georges Banks resulting in greater physical trauma. This study provides a quantitative estimate of incidental mortality using a precise and noninvasive platform. The spatial scale and distribution of the study sites are broader relative to past studies and represent the two principal stocks of the sea scallop resource. These results are lower than the incidental mortality values currently used in fishery stock models and suggest the existing values are conservative, but appropriate estimates.

Biotechnological Tools in Fisheries and Aquatic Health Management

Author : Bijay Kumar Behera
Publisher : Springer Nature
ISBN 13 : 9819929814
Total Pages : 254 pages
Book Rating : 4.8/5 (199 download)

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Book Synopsis Biotechnological Tools in Fisheries and Aquatic Health Management by : Bijay Kumar Behera

Download or read book Biotechnological Tools in Fisheries and Aquatic Health Management written by Bijay Kumar Behera and published by Springer Nature. This book was released on 2023-11-22 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: This edited book is focused on SDG 14: life below water. This book covers all aspects of fish biotechnology and health management. A detailed description is provided of CRISPR Cas9 technology application in the development of superior variety of fish with better growth, disease resistance, etc., accompanied by numerous helpful photographs and schematic diagrams. In addition, recent developments in nanotechnology and its application in fisheries production enhancement have been discussed. Further, topics includes, probiotics, immunostimulants, fish genetic markers, bioremediation, metagenomics, transgenerational immune priming, application of cell culture in fisheries and nano-biosensor application on fish disease diagnosis, pollution monitoring, etc. are provided in details. . The book is helpful for researchers, teachers, students, farmers, and entrepreneurs in utilizing the knowledge on recent advancements in different aspects of fish genetics and biotechnology for future research and aquaculture production enhancement.

Examining the Frontier of Autonomous Underwater Vehicle Image Analysis for Sea Scallop Incidental Mortality

Author : Hunter Tipton
Publisher :
ISBN 13 :
Total Pages : 77 pages
Book Rating : 4.4/5 (64 download)

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Book Synopsis Examining the Frontier of Autonomous Underwater Vehicle Image Analysis for Sea Scallop Incidental Mortality by : Hunter Tipton

Download or read book Examining the Frontier of Autonomous Underwater Vehicle Image Analysis for Sea Scallop Incidental Mortality written by Hunter Tipton and published by . This book was released on 2021 with total page 77 pages. Available in PDF, EPUB and Kindle. Book excerpt: Historically, the Atlantic sea scallop (Placopecten magellanicus) fishery in the United States has undergone vast changes in management to combat stock volatility and fishing pressure. Today the American sea scallop stock has stabilized and is successfully managed via fishery independent surveys and stock assessment models. One of the factors affecting the stock assessment model for this fishery is incidental fishing mortality, or those individual scallops that experience mortality because of fishing effort but are not retained for use by the fishery. Recent studies sought to enumerate sea scallop incidental mortality on various seabed types. However, most of the scallops examined in these studies were inhabiting sandy bottoms more generally known as soft substrate. This study utilized 38,813 underwater images collected via Autonomous Underwater Vehicle (AUV) and a modified Multiple Before After Control Impact (MBACI) experimental design to examine incidental mortality on gravel and rock, or hard substrates within Closed Area I just north of the great south channel. Of the 31,972 scallops measured from these images 73% were annotated as lying on hard substrate and the highest measured value of incidental mortality was 6.70%. This result suggests that stock assessment values for incidental mortality remain conservative for hard substrate management areas. The results of this study also suggest that both sediment and sea scallop distributions may be more variable than previously understood within the spatial domain of a study site.

Improving Fish Stock Assessments

Author : National Research Council
Publisher : National Academies Press
ISBN 13 : 0309174406
Total Pages : 194 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Improving Fish Stock Assessments by : National Research Council

Download or read book Improving Fish Stock Assessments written by National Research Council and published by National Academies Press. This book was released on 1998-02-27 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ocean harvests have plateaued worldwide and many important commercial stocks have been depleted. This has caused great concern among scientists, fishery managers, the fishing community, and the public. This book evaluates the major models used for estimating the size and structure of marine fish populations (stock assessments) and changes in populations over time. It demonstrates how problems that may occur in fisheries dataâ€"for example underreporting or changes in the likelihood that fish can be caught with a given type of gearâ€"can seriously degrade the quality of stock assessments. The volume makes recommendations for means to improve stock assessments and their use in fishery management.

Aquaculture Productivity

Author : Vishwa Raman Prasad Sinha
Publisher :
ISBN 13 :
Total Pages : 952 pages
Book Rating : 4.:/5 (318 download)

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Book Synopsis Aquaculture Productivity by : Vishwa Raman Prasad Sinha

Download or read book Aquaculture Productivity written by Vishwa Raman Prasad Sinha and published by . This book was released on 1991 with total page 952 pages. Available in PDF, EPUB and Kindle. Book excerpt:

World Atlas of Biodiversity

Author : Brian Groombridge
Publisher : Univ of California Press
ISBN 13 : 9780520236684
Total Pages : 362 pages
Book Rating : 4.2/5 (366 download)

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Book Synopsis World Atlas of Biodiversity by : Brian Groombridge

Download or read book World Atlas of Biodiversity written by Brian Groombridge and published by Univ of California Press. This book was released on 2002 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: Global biological diversity, ecosystem diversity.

The Future of Fisheries Science in North America

Author : Richard J. Beamish
Publisher : Springer Science & Business Media
ISBN 13 : 1402092105
Total Pages : 736 pages
Book Rating : 4.4/5 (2 download)

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Book Synopsis The Future of Fisheries Science in North America by : Richard J. Beamish

Download or read book The Future of Fisheries Science in North America written by Richard J. Beamish and published by Springer Science & Business Media. This book was released on 2009-02-07 with total page 736 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fisheries science in North America is changing in response to a changing climate, new technologies, an ecosystem approach to management and new thinking about the processes affecting stock and recruitment. Authors of the 34 chapters review the science in their particular fields and use their experience to develop informed opinions about the future. Everyone associated with fish, fisheries and fisheries management will find material that will stimulate their thinking about the future. Readers will be impressed with the potential for new discoveries, but disturbed by how much needs to be done in fisheries science if we are to sustain North American fisheries in our changing climate. Officials that manage or fund fisheries science will appreciate the urgency for the new information needed for the stewardship of fish populations and their ecosystems. Research organizations may want to keep some extra copies for a future look back into the thoughts of a wide range of fisheries professionals. Fisheries science has been full of surprises with some of the surprises having major economic impacts. It is important to minimize these impacts as the demand for seafood increases and the complexities of fisheries management increase.

The Leatherback Turtle

Author : James R. Spotila
Publisher : JHU Press
ISBN 13 : 142141709X
Total Pages : 246 pages
Book Rating : 4.4/5 (214 download)

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Book Synopsis The Leatherback Turtle by : James R. Spotila

Download or read book The Leatherback Turtle written by James R. Spotila and published by JHU Press. This book was released on 2015-10-30 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: The most comprehensive book ever written on leatherback sea turtles. Weighing as much as 2,000 pounds and reaching lengths of over seven feet, leatherback turtles are the world’s largest reptile. These unusual sea turtles have a thick, pliable shell that helps them to withstand great depths—they can swim more than one thousand meters below the surface in search of food. And what food source sustains these goliaths? Their diet consists almost exclusively of jellyfish, a meal they crisscross the oceans to find. Leatherbacks have been declining in recent decades, and some predict they will be gone by the end of this century. Why? Because of two primary factors: human redevelopment of nesting beaches and commercial fishing. There are only twenty-nine index beaches in the world where these turtles nest, and there is immense pressure to develop most of them into homes or resorts. At the same time, longline and gill net fisheries continue to overwhelm waters frequented by leatherbacks. In The Leatherback Turtle, James R. Spotila and Pilar Santidrián Tomillo bring together the world’s leading experts to produce a volume that reveals the biology of the leatherback while putting a spotlight on the conservation problems and solutions related to the species. The book leaves us with options: embark on the conservation strategy laid out within its pages and save one of nature’s most splendid creations, or watch yet another magnificent species disappear.

Global Change in Marine Systems

Author : Patrice Guillotreau
Publisher : Routledge
ISBN 13 : 1351672126
Total Pages : 336 pages
Book Rating : 4.3/5 (516 download)

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Book Synopsis Global Change in Marine Systems by : Patrice Guillotreau

Download or read book Global Change in Marine Systems written by Patrice Guillotreau and published by Routledge. This book was released on 2017-11-13 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: Global Change in Marine Systems analyses and appraises societal and governing responses to change affecting marine social and ecological systems around the world. Acknowledging the stakes – local societies that depend on marine systems for food, livelihoods and wellbeing can suffer great hardship – this book highlights and explains similarities and distinctions between successful and unsuccessful responses. The book presents an analytical framework (‘I-ADApT’) that enables decision-makers to consider possible responses to global change based on experiences elsewhere. Here an international group of researchers from the natural and social sciences apply the ‘I-ADApT’ framework to twenty enlightening case studies, covering a wide range of marine systems challenged by critical global change issues around the world. The innovative research presented here guides marine system researchers, policymakers, decision-makers and practitioners in responding to global change in a timely and appropriate manner. It will appeal to students and researchers interested in environmental studies, natural resources, marine resources, environmental sociology, sustainability, and climate change.

Aquaculture Site Selection and Site Management

Author :
Publisher : IUCN
ISBN 13 : 2831711711
Total Pages : 313 pages
Book Rating : 4.8/5 (317 download)

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Book Synopsis Aquaculture Site Selection and Site Management by :

Download or read book Aquaculture Site Selection and Site Management written by and published by IUCN. This book was released on 2009 with total page 313 pages. Available in PDF, EPUB and Kindle. Book excerpt: The views expressed in this publication do not necessarily reflect those of IUCN, the Spanish Ministry of the Environment and Rural and Marine Affairs or the European Federation of Aquaculture Producers (FEAP). --Book Jacket.

Landscape and Quaternary Environmental Change in New Zealand

Author : James Shulmeister
Publisher : Springer
ISBN 13 : 9462392374
Total Pages : 342 pages
Book Rating : 4.4/5 (623 download)

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Book Synopsis Landscape and Quaternary Environmental Change in New Zealand by : James Shulmeister

Download or read book Landscape and Quaternary Environmental Change in New Zealand written by James Shulmeister and published by Springer. This book was released on 2016-12-16 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book brings together an overview of the recent geological history, active earth and biological processes and human settlement of New Zealand. Topics covered include the very active neotectonic and volcanic setting. Mountain geomorphic processes are examined and new ideas about landsliding are highlighted. The exceptional sedimentary archives of the Whanganui Basin are also presented. As one of two land masses that extend into the southern mid-latitudes, New Zealand is ideally located to investigate changes in Southern Ocean climate. Related to this, mountain glaciation in New Zealand is a focus in global climate change debates. New Zealand also has a unique biota due to its long isolation and is the last major land mass to be settled by people. Advances in DNA technologies have revolutionised our understanding of the histories and processes involved. The book provides a comprehensive review of existing work and highlights new ideas and major debates across all these fields.

Evolution of Marine Coastal Ecosystems under the Pressure of Global Changes

Author : Hubert-Jean Ceccaldi
Publisher : Springer Nature
ISBN 13 : 3030434842
Total Pages : 521 pages
Book Rating : 4.0/5 (34 download)

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Book Synopsis Evolution of Marine Coastal Ecosystems under the Pressure of Global Changes by : Hubert-Jean Ceccaldi

Download or read book Evolution of Marine Coastal Ecosystems under the Pressure of Global Changes written by Hubert-Jean Ceccaldi and published by Springer Nature. This book was released on 2020-06-15 with total page 521 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coastal and estuarine environments at the interface of terrestrial and marine areas are among the most productive in the world. However, since the beginning of the industrial era, these ecosystems have been subjected to strong anthropogenic pressures intensified from the second half of the 20th century, when there was a marked acceleration in the warming (climate change) of the continents, particularly at high latitudes. Coastal ecosystems are highly vulnerable to alteration of their physical, chemical and biological characteristics (marine intrusion, acidification of marine environments, changes in ecosystems, evolution and artificialization of the coastline, etc.).In contact with heavily populated areas, these environments are often the receptacle of a lot of chemical and biological pollution sources that significantly diminish their resilience. In this context of accelerated evolution and degradation of these areas important for food security of many populations around the world, it is necessary to better identify the factors of pressure and understand, at different scales of observation, their effects and impacts on the biodiversity and on the socio-eco-systems, in order to determine the degree of vulnerability of these coastal ecosystems and the risks they face. A transdisciplinary and integrated approach is required to prevent risks. Within this framework, operational coastal oceanography occupies an important place but also the implementation of a true socio-eco-system approach in order to set up an environmentally friendly development.

Fishermen's Contingency Fund

Author : United States. National Marine Fisheries Service
Publisher :
ISBN 13 :
Total Pages : 12 pages
Book Rating : 4.3/5 (121 download)

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Book Synopsis Fishermen's Contingency Fund by : United States. National Marine Fisheries Service

Download or read book Fishermen's Contingency Fund written by United States. National Marine Fisheries Service and published by . This book was released on 1985 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Proceedings of the Second Glacier Bay Science Symposium

Author : Alexander M. Milner
Publisher :
ISBN 13 :
Total Pages : 186 pages
Book Rating : 4.:/5 (319 download)

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Book Synopsis Proceedings of the Second Glacier Bay Science Symposium by : Alexander M. Milner

Download or read book Proceedings of the Second Glacier Bay Science Symposium written by Alexander M. Milner and published by . This book was released on 1990 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Dictionary of Physical Geography

Author : David S. G. Thomas
Publisher : John Wiley & Sons
ISBN 13 : 1118687434
Total Pages : 918 pages
Book Rating : 4.1/5 (186 download)

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Book Synopsis The Dictionary of Physical Geography by : David S. G. Thomas

Download or read book The Dictionary of Physical Geography written by David S. G. Thomas and published by John Wiley & Sons. This book was released on 2013-05-28 with total page 918 pages. Available in PDF, EPUB and Kindle. Book excerpt: The third edition of this comprehensive encyclopedic dictionary covers the whole field of physical geography and provides an essential reference for all students and lecturers in this field.

Artificial Reef Evaluation

Author : William Seaman
Publisher : CRC Press
ISBN 13 : 1420036637
Total Pages : 265 pages
Book Rating : 4.4/5 (2 download)

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Book Synopsis Artificial Reef Evaluation by : William Seaman

Download or read book Artificial Reef Evaluation written by William Seaman and published by CRC Press. This book was released on 2000-03-23 with total page 265 pages. Available in PDF, EPUB and Kindle. Book excerpt: Beneath the coastal waters of the world lie thousands of artificial reefs. Some are old and retired freighters and ships that once plied the oceans of the world but now serve as habitats for marine life. Others are newer reefs that have been designed and built for specific applications. With the field of aquatic habitat technology continually growi

Ecology, Conservation, and Restoration of Chilika Lagoon, India

Author : C. Max Finlayson
Publisher : Springer Nature
ISBN 13 : 3030334244
Total Pages : 451 pages
Book Rating : 4.0/5 (33 download)

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Book Synopsis Ecology, Conservation, and Restoration of Chilika Lagoon, India by : C. Max Finlayson

Download or read book Ecology, Conservation, and Restoration of Chilika Lagoon, India written by C. Max Finlayson and published by Springer Nature. This book was released on 2020-01-31 with total page 451 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book chronicles the decades-long work of studying, analyzing, and reversing the environmental pressures that threatened India’s Chilika Lagoon, the largest brackish-water lagoon in the region, and the second largest in the world. Designated as one of India’s first Ramsar Sites in 1981, Chilika Lagoon continued to degrade for a decade longer. Then, the Chilika Development Authority (CDA) was established to gather information and devise a restoration plan that benefits the ecosystems of the lagoon, with sensitivity to the needs and livelihoods of local communities. Expert contributors detail the work of analysis, planning and implementation, including extensive coverage of such topics as: Devising a plan for implementing Ramsar wise use guidelines Sedimentologic, chemical, and isotopic impacts Hydrodynamics and salinity Runoff and sediment in watersheds of the Lagoon's Western Catchment Long-term analysis of water quality and continued water quality monitoring Bio-optical models for cyclone impact assessment Studies of geomorphology, land use, and sedimentary environments Spatiotemporal assessment of phytoplankton communities Creation of a post-restoration scenario for fish and fisheries Assessing status of waterbirds, species diversity and migration patterns The result was a major hydrological intervention to re-establish hydrological and salinity regimes, biodiversity, and fish catches, and help protect the livelihood of lagoon-dependent communities. The story of the rehabilitation and management of Chilika Lagoon demonstrates that it is possible to halt and reverse the encroachment and degradation of wetlands, to restore biodiversity and to provide benefits for large numbers of people. Ecology, Conservation, and Restoration of Chilika Lagoon goes beyond scientific research articles to explore institutional and governance issues, political ecology, and the Ramsar Convention’s guidelines for ecosystem restoration. The book will benefit researchers, wetland managers, government policy makers and more general readers concerned with restoration and conservation of wetlands around the planet.