scholarly journals Characterizing the habitat function of bivalve aquaculture using underwater video

2021 ◽  
Author(s):  
B Ferriss ◽  
K Veggerby ◽  
M Bogeberg ◽  
L Conway-Cranos ◽  
L Hoberecht ◽  
...  
Keyword(s):  
Underwater Video ◽  
Habitat Function ◽  
Bivalve Aquaculture

СИСТЕМЫ СТАЦИОНАРНОГО ПОДВОДНОГО ВИДЕОНАБЛЮДЕНИЯ ПРИБРЕЖНЫХ АКВАТОРИЙ

2020 ◽  
Author(s):  
V.K. Fishchenko ◽  
P.S. Zimin ◽  
A.V. Zatserkovnyy ◽  
A.E. Subote ◽  
A.V. Golik ◽  
...  
Keyword(s):  
Marine Biology ◽  
Surveillance Systems ◽  
Underwater Video ◽  
Vital Activity ◽  
Geographically Dispersed ◽  
Video Recordings ◽  
Underwater Cameras ◽  
The Pacific ◽  
External Conditions ◽  
Marine Vessels

В Тихоокеанском океанологическом институте (ТОИ) ДВО РАН с 2012 г. ведутся разработки и исследования возможностей технологий стационарного подводного видеонаблюдения. Развернуты три подводныхкомплекса: два в бухте Алексеева (о-в Попова) и один в бухте Витязь (зал. Посьета). К настоящему времени накоплены значительные объемы информации в виде моментальных снимков и видеозаписей подводныхсцен. Разработаны интерфейсы для предоставления этой информации пользователям по каналам сети Интернет. Разработаны технологии поддержки работы территориально разнесенных экспертов, составляющихбиологические описания видеоматериалов, подобных тем, которые разрабатываются в ведущих зарубежныхорганизациях по морской биологии. Разработаны и апробированы методики оценивания по видеоинформации параметров жизнедеятельности некоторых видов морских гидробионтов. Благодаря непрерывностинаблюдения зафиксировано нескольких редких случаев, представляющих интерес для морских биологов. Разработаны и апробированы методики оценивания гидрологических характеристик среды на основе анализавидеотрансляций с подводных камер. Эти результаты представляются важными в контексте сопровождениянаблюдений за жизнедеятельностью морской биоты данными о внешних условиях, в которых она происходит. Продемонстрирована возможность использования звукового канала камер для регистрации и анализаакустических шумов от морских судов. Продемонстрирована возможность применения подводных видеокомплексов для организации экспериментов по изучению реакции морских гидробионтов на воздействие целенаправленных физических сигналов.Since 2012, the Pacific Oceanological Institute of FarEastern Branch of the Russian Academy of Science has beendeveloping and studying the capabilities of technologies ofstationary underwater video surveillance. Three of the underwatercomplexes have been deployed in different waterareas: two in the Alekseev Bay (Popova Island) and one inVityaz Bay (Posyet Gulf). At this point, complexes have accumulateda significant amount of data in the form of snapshotsand video recordings of underwater scenes, which canbe accessed through designed Internet-based interfaces. Allthe surveillance systems contain technologies as a support ofthe work of geographically dispersed experts involved in thebiological description of video materials, similar to ones developedin leading worldwide marine biology organizations.Besides, the estimation of vital parameters of some marinelife species by the video recordings can be performed usingdeveloped and tested methods. Thanks to continuous observation,the designed systems have already recorded severalrare cases of interest for marine biologists. Hydrologicalcharacteristics of surrounding media can be studied usingdeveloped and tested methods of analysis of video streamingfrom underwater cameras. These results are especially crucialfor accompanying observations of the vital activity ofmarine organisms with data on external conditions in whichthey occur. Cameras built-in audio channels can be used forrecording and analyzing noises of marine vessels. Designedunderwater video complexes provide an opportunity forconducting experiments on studying the reaction of marineorganisms to dedicated physical signals.

The influence of shark behavior and environmental conditions on baited remote underwater video survey results

2021 ◽  
Vol 447 ◽  
pp. 109507
Author(s):  
James P. Kilfoil ◽  
Matthew D. Campbell ◽  
Michael R. Heithaus ◽  
Yuying Zhang
Keyword(s):  
Environmental Conditions ◽  
Underwater Video ◽  
Survey Results ◽  
Video Survey

scholarly journals Infectious diseases in oyster aquaculture require a new integrated approach

2016 ◽  
Vol 371 (1689) ◽  
pp. 20150213 ◽  
Author(s):  
Fabrice Pernet ◽  
Coralie Lupo ◽  
Cédric Bacher ◽  
Richard J. Whittington
Keyword(s):  
Integrated Approach ◽  
Emerging Diseases ◽  
Protective Measures ◽  
Oyster Aquaculture ◽  
The Pacific ◽  
Holistic Understanding ◽  
Key Issues ◽  
Ostreid Herpesvirus 1 ◽  
Bivalve Aquaculture

Emerging diseases pose a recurrent threat to bivalve aquaculture. Recently, massive mortality events in the Pacific oyster Crassostrea gigas associated with the detection of a microvariant of the ostreid herpesvirus 1 (OsHV-1µVar) have been reported in Europe, Australia and New Zealand. Although the spread of disease is often viewed as a governance failure, we suggest that the development of protective measures for bivalve farming is presently held back by the lack of key scientific knowledge. In this paper, we explore the case for an integrated approach to study the management of bivalve disease, using OsHV-1 as a case study. Reconsidering the key issues by incorporating multidisciplinary science could provide a holistic understanding of OsHV-1 and increase the benefit of research to policymakers.

Use of stereo baited remote underwater video systems to estimate the presence and size of white sharks (Carcharodon carcharias)

2017 ◽  
Vol 68 (7) ◽  
pp. 1391 ◽  
Author(s):  
D. Harasti ◽  
K. A. Lee ◽  
R. Laird ◽  
R. Bradford ◽  
B. Bruce
Keyword(s):  
Relative Abundance ◽  
Fish Assemblages ◽  
New South ◽  
Underwater Video ◽  
Carcharodon Carcharias ◽  
South Wales ◽  
Video Systems ◽  
Near Shore ◽  
Number Of Individuals ◽  
Non Destructive

Stereo baited remote underwater video systems (stereo-BRUVs) are commonly used to assess fish assemblages and, more recently, to record the localised abundance and size of sharks. The present study investigated the occurrence and size of white sharks (Carcharodon carcharias) in the near-shore environment off Bennett’s Beach, part of a known nursery area for the species in central New South Wales, Australia. Six stereo-BRUV units were deployed approximately fortnightly between August and December 2015 for periods of 5h in depths of 7–14m. Stereo-BRUVs successfully recorded 34 separate sightings of 22 individual white sharks. The highest number of individuals detected during a single day survey was eight. All C. carcharias observed on stereo-BRUVs were juveniles ranging in size from 1.50 to 2.46-m total length (mean±s.e., 1.91±0.05m; n=22). The time to first appearance ranged from 15 to 299min (mean±s.e., 148±15min). This study demonstrates that the use of stereo-BRUVs is a viable, non-destructive method to obtain estimates of the size and presence of white sharks, and may be useful in estimating relative abundance in near-shore environments where white sharks are known to frequent.

Underwater video mosaicing using topology and superpixel-based pairwise stitching

2019 ◽  
Vol 119 ◽  
pp. 171-183 ◽  
Author(s):  
Yan Li ◽  
Carly J. Randall ◽  
Robert van Woesik ◽  
Eraldo Ribeiro
Keyword(s):  
Underwater Video ◽  
Video Mosaicing

scholarly journals An Estimation of Fish Biomass and Attached Organisms beneath Oyster Rafts in Hiroshima Bay, Japan

2021 ◽  
Vol 324 ◽  
pp. 03013
Author(s):  
Wahyudin Wahyudin ◽  
Tamiji Yamamoto
Keyword(s):  
Large Scale ◽  
Fish Habitat ◽  
Food Chains ◽  
Ecosystem Structure ◽  
Fish Production ◽  
Underwater Video ◽  
Oyster Culture ◽  
Video Cameras ◽  
Black Seabream ◽  
Material Cycles

Hiroshima Bays is top production approximately 60% of oyster production in Japan. For cultivate of oyster, fishermen use hanging rafts. A thousand of raft is hanging during 2-3 years in the bay. Large-scale oyster culture may change the ecosystem structure and material cycles in the bay through the filtration of particulate matter by oysters and other associated animals. This study described the community structure of marine organisme in terms of fishes surrounding and animal attached on oyster rafts. Field observation was carried out from 2016 to 2019 at oyster farming in Hiroshima Bay. Oyster production and provisioning for the fish habitat were also evaluated by placing underwater video cameras beneath oyster culture rafts. The result showed that black seabream was high biomass and oyster it shelf was bigger bioyster for animal attached on oyster raft. The number of individual, mussel is most abundance of animal attach on oyster raft with ratio 9:1 than number of oyster. Maintaining oyster culture is important not only for maintaining oyster production, but also for maintaining fish production by enhancing material cycles through the paths in the food chains of Hiroshima Bay under oligotrophic conditions.

scholarly journals KOSMOS: An Open Source Underwater Video Lander for Monitoring Coastal Fishes and Habitats

Sensors ◽  
2021 ◽  
Vol 21 (22) ◽  
pp. 7724
Author(s):  
Dominique Pelletier ◽  
Justin Rouxel ◽  
Olivier Fauvarque ◽  
David Hanon ◽  
Jean-Paul Gestalin ◽  
...  
Keyword(s):  
Work Experience ◽  
Collective Intelligence ◽  
Low Cost ◽  
Ecological Status ◽  
Digital Fabrication ◽  
Quality Data ◽  
Ecological Knowledge ◽  
Underwater Video ◽  
Anthropogenic Pressures ◽  
Technical Specifications

Background: Monitoring the ecological status of coastal ecosystems is essential to track the consequences of anthropogenic pressures and assess conservation actions. Monitoring requires periodic measurements collected in situ, replicated over large areas and able to capture their spatial distribution over time. This means developing tools and protocols that are cost-effective and provide consistent and high-quality data, which is a major challenge. A new tool and protocol with these capabilities for non-extractively assessing the status of fishes and benthic habitats is presented here: the KOSMOS 3.0 underwater video system. Methods: The KOSMOS 3.0 was conceived based on the pre-existing and successful STAVIRO lander, and developed within a digital fabrication laboratory where collective intelligence was contributed mostly voluntarily within a managed project. Our suite of mechanical, electrical, and software engineering skills were combined with ecological knowledge and field work experience. Results: Pool and aquarium tests of the KOSMOS 3.0 satisfied all the required technical specifications and operational testing. The prototype demonstrated high optical performance and high consistency with image data from the STAVIRO. The project’s outcomes are shared under a Creative Commons Attribution CC-BY-SA license. The low cost of a KOSMOS unit (~1400 €) makes multiple units affordable to modest research or monitoring budgets.

Sign in / Sign up

Export Citation Format

Share Document