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      Repeatability of baited remote underwater video station (BRUVS) results within and between seasons

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          Abstract

          Baited remote underwater video stations (BRUVS) are increasingly being used to evaluate and monitor reef communities. Many BRUVS studies compare multiple sites sampled at single time points that may differ from the sampling time of another site. As BRUVS use grows in its application to provide data relevant to sustainable management, marine protected area success, and overall reef health, understanding repeatability of sampling results is vital. We examined the repeatability of BRUVS results for the elasmobranch community both within and between seasons and years, and explored environmental factors affecting abundances at two sites in Indonesia. On 956 BRUVS, 1139 elasmobranchs (69% rays, 31% sharks) were observed. We found consistent results in species composition and abundances within a season and across years. However, elasmobranch abundances were significantly higher in the wet season. The elasmobranch community was significantly different between the two sites sampled, one site being more coastal and easily accessed by fishermen. Our results demonstrate that while BRUVS are a reliable and repeatable method for surveying elasmobranchs, care must be taken in the timing of sampling between different regions to ensure that any differences observed are due to inherent differences amongst sampling areas as opposed to seasonal dissimilarities.

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          glmmTMB Balances Speed and Flexibility Among Packages for Zero-inflated Generalized Linear Mixed Modeling

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            Guidelines for estimating repeatability

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              Sample size and optimal designs for reliability studies.

              A method is developed to calculate the required number of subjects k in a reliability study, where reliability is measured using the intraclass correlation rho. The method is based on a functional approximation to earlier exact results. The approximation is shown to have excellent agreement with the exact results and one can use it easily without intensive numerical computation. Optimal design configurations are also discussed; for reliability values of about 40 per cent or higher, use of two or three observations per subject will minimize the total number of observations required.
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                Author and article information

                Contributors
                Role: ConceptualizationRole: Data curationRole: Formal analysisRole: Funding acquisitionRole: InvestigationRole: MethodologyRole: ValidationRole: VisualizationRole: Writing – original draftRole: Writing – review & editing
                Role: ConceptualizationRole: Funding acquisitionRole: SupervisionRole: Writing – review & editing
                Role: Funding acquisitionRole: InvestigationRole: Project administrationRole: ResourcesRole: Writing – review & editing
                Role: Funding acquisitionRole: InvestigationRole: Project administrationRole: ResourcesRole: Writing – review & editing
                Role: Project administrationRole: Resources
                Role: SupervisionRole: Writing – review & editing
                Role: ConceptualizationRole: Data curationRole: Formal analysisRole: Funding acquisitionRole: MethodologyRole: Project administrationRole: SupervisionRole: Writing – review & editing
                Role: Editor
                Journal
                PLoS One
                PLoS One
                plos
                plosone
                PLoS ONE
                Public Library of Science (San Francisco, CA USA )
                1932-6203
                17 December 2020
                2020
                : 15
                : 12
                : e0244154
                Affiliations
                [1 ] Centre for Sustainable Tropical Fisheries and Aquaculture; College of Science and Engineering, James Cook University, Townsville, Queensland, Australia
                [2 ] AIMS@JCU, DB17-063, James Cook University, Townsville, Queensland, Australia
                [3 ] Department of Biological Sciences, Earth to Oceans Research Group, Simon Fraser University, Burnaby, British Columbia, Canada
                [4 ] Australian Institute of Marine Science, Cape Cleveland, Queensland, Australia
                [5 ] Operation Wallacea, Spilsby, Lincolnshire, United Kingdom
                [6 ] Wasage Divers, Wakatobi & Buton, Southeast Sulawesi, Indonesia
                [7 ] Fisheries Department, Universitas Dayanu Ikhsanuddin, Bau Bau, Southeast Sulawesi, Indonesia
                Institut de Recherche pour le Developpement, FRANCE
                Author notes

                Competing Interests: One of the funders (Wasage Divers) provided support in the form of salaries for authors M.K., but did not have any additional role in the study design, data collection and analysis, decision to publish, or preparation of the manuscript. The specific roles of this author are articulated in the ‘author contributions’ section. This does not alter our adherence to PLOS ONE policies on sharing data and materials.

                Author information
                https://orcid.org/0000-0002-7150-1035
                Article
                PONE-D-20-21493
                10.1371/journal.pone.0244154
                7745976
                33332427
                1967031d-74bf-4160-890f-6ceb3764acf5
                © 2020 Sherman et al

                This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

                History
                : 11 July 2020
                : 4 December 2020
                Page count
                Figures: 6, Tables: 2, Pages: 18
                Funding
                Funded by: funder-id http://dx.doi.org/10.13039/100000952, Paul G. Allen Family Foundation;
                Award Recipient :
                Funded by: funder-id http://dx.doi.org/10.13039/100000952, Paul G. Allen Family Foundation;
                Award Recipient :
                This work was funded by Paul G. Allen Philanthropies and the Global FinPrint project ( https://www.pgafamilyfoundation.org) awarded to CAS and MRH. Additional project support was provided by Operation Wallacea ( https://www.opwall.com) and Wasage Divers ( http://wasagedivers.com/en/home/) to CSS. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. One of the funders (Wasage Divers) provided support in the form of salaries for authors M.K., but did not have any additional role in the study design, data collection and analysis, decision to publish, or preparation of the manuscript. The specific roles of this author are articulated in the ‘author contributions’ section.
                Categories
                Research Article
                Biology and Life Sciences
                Organisms
                Eukaryota
                Animals
                Vertebrates
                Fish
                Chondrichthyes
                Elasmobranchii
                Sharks
                Biology and Life Sciences
                Zoology
                Animals
                Vertebrates
                Fish
                Chondrichthyes
                Elasmobranchii
                Sharks
                Biology and Life Sciences
                Marine Biology
                Coral Reefs
                Earth Sciences
                Marine and Aquatic Sciences
                Marine Biology
                Coral Reefs
                Earth Sciences
                Marine and Aquatic Sciences
                Reefs
                Coral Reefs
                Earth Sciences
                Geomorphology
                Topography
                Landforms
                Islands
                Biology and Life Sciences
                Organisms
                Eukaryota
                Animals
                Vertebrates
                Fish
                Chondrichthyes
                Elasmobranchii
                Biology and Life Sciences
                Zoology
                Animals
                Vertebrates
                Fish
                Chondrichthyes
                Elasmobranchii
                Biology and Life Sciences
                Organisms
                Eukaryota
                Animals
                Vertebrates
                Amniotes
                Birds
                Raptors
                Eagles
                Biology and Life Sciences
                Zoology
                Animals
                Vertebrates
                Amniotes
                Birds
                Raptors
                Eagles
                Earth Sciences
                Marine and Aquatic Sciences
                Reefs
                Biology and Life Sciences
                Psychology
                Behavior
                Animal Behavior
                Animal Migration
                Social Sciences
                Psychology
                Behavior
                Animal Behavior
                Animal Migration
                Biology and Life Sciences
                Zoology
                Animal Behavior
                Animal Migration
                Biology and Life Sciences
                Organisms
                Eukaryota
                Animals
                Vertebrates
                Fish
                Chondrichthyes
                Elasmobranchii
                Skates and Rays
                Biology and Life Sciences
                Zoology
                Animals
                Vertebrates
                Fish
                Chondrichthyes
                Elasmobranchii
                Skates and Rays
                Custom metadata
                Data are available on the Tropical Data Hub with a DOI: 10.25903/5f7bccf305a6d.

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                Uncategorized

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