Article
Fisheries
X. Hoenner, E. Barlian, T. Ernawati, B. D. Hardesty, D. D. Kembaren, P. J. Mous, L. Sadiyah, F. Satria, C. Wilcox
Summary: This study investigated the feasibility of using low-cost anti-theft devices to detect spatio-temporal patterns of fishing activity in the small-to medium-scale snapper fishery of Indonesia. By analyzing GPS data and using spatial clustering, positions associated with fishing events can be automatically identified. The application of this technology can improve fish stock and marine resource management by monitoring a previously poorly documented sector of the commercial fishing industry.
FISHERIES RESEARCH
(2022)
Article
Environmental Sciences
Yeseul Kim
Summary: The spatial time series geostatistical deconvolution/fusion model (STGDFM) combines dense and coarse-scale data with sparse and fine-scale data to generate synthetic dense time series data. In this study, STGDFM was evaluated for predicting changes in reflectance due to disasters, and it outperformed other comparative models in flood- and wildfire-affected areas.
Article
Fisheries
Dale Squires, Ramon Jimenez-Toribio, Patrice Guillotreau, Jimmy Anastacio-Solis
Summary: This paper examines the Manta (Ecuador) market for tuna landings and imports using an inverse almost ideal demand system. Skipjack tuna dominates the market, while yellowfin imports show a different price responsiveness. Reducing landings and imports of all species increases vessel profits, but leads to a decline in overall economic welfare in Ecuador. The study also identifies two distinct market segments, one integrated by price and dependent on skipjack imports, and another focused on yellowfin imports for processors. The Bangkok market responds to the growing Manta market.
FISHERIES RESEARCH
(2023)
Article
Fisheries
Nuria Perez Bielsa, Judith Olle, David Macias, Samar Saber, Jordi Vinas
Summary: This study confirms, for the first time, the presence of three young individuals of bigeye tuna within the Mediterranean Sea.
JOURNAL OF FISH BIOLOGY
(2021)
Article
Environmental Sciences
Anais Medieu, David Point, Aurore Receveur, Olivier Gauthier, Valerie Allain, Heidi Pethybridge, Christophe E. Menkes, David P. Gillikin, Andrew T. Revill, Christopher J. Somes, Jeremy Collin, Anne Lorrain
Summary: Through studying the mercury concentrations in three tropical tuna species in the southwestern Pacific Ocean, it was found that there were significant inter-annual variability in mercury concentrations in tuna, but no clear long-term trend was observed. The influence of amino acids and model-estimated phytoplankton δN-15 values on mercury concentrations in tuna was highlighted.
Article
Environmental Sciences
Uday Mandal, Anirban Dhar, Sudhindra N. Panda, Dipaka R. Sena
Summary: The present study analyzes the quantity and quality of groundwater to determine its suitability for irrigation. Various water quality indices were used to assess the origin of groundwater sources, salinity, alkalinity, sodium and magnesium hazard, carbonate and bicarbonate hazard, hydro-chemical facie and evaluation, and statistical relationships among variables. The results indicate that the groundwater quality is suitable for irrigation and provide a tool for deciding well location, pumping schedule, and crop planning for sustainable agriculture.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Ecology
Karine Briand, Philippe S. Sabarros, Alexandra Maufroy, Anne-Lise Vernet, Arthur Yon, Antoine Bonnieux, Michel Goujon, Pascal Bach
Summary: This study used Electronic Monitoring Systems (EMS) installed on board French tropical tuna purse seiners to examine the sorting process and optimize observer sampling strategies for obtaining robust estimates of discards. The results showed differences in the flow of discards among species and sorting locations and recommended specific observer sampling strategies for accurate discard estimation. The study also discussed strategies to improve discard estimation combining onboard and electronic observations.
REGIONAL STUDIES IN MARINE SCIENCE
(2023)
Article
Environmental Sciences
Luisa Andrade, Martin Boudou, Paul Hynds, Carlos Chique, John Weatherill, Jean O'Dwyer
Summary: This study analyzed groundwater monitoring data in the Republic of Ireland and found high contamination rates of Escherichia coli in groundwater, with associations to factors such as seasonality, geological features, and rainfall. The results are expected to inform policy change and groundwater monitoring programs in geologically heterogeneous regions.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Oceanography
Kotaro Tanaka, Kotaro Ichikawa, Tomonari Akamatsu, Kongkiat Kittiwattanawong, Nobuaki Arai, Hiromichi Mitamura
Summary: Examining the fine-scale spatiotemporal habitat use by marine megafauna and human activities is crucial for the coordinated management of coastal areas. This study used passive acoustic monitoring to investigate the acoustic presence of dugongs and its correlation with environmental and anthropological factors, as well as the overlap with vessel traffic. The results showed the spatial and temporal patterns of dugong vocal communication varied among locations, and their acoustic presence was influenced by different factors. The distribution of vessel traffic, however, remained stable. This study highlights the importance of spatial management and temporal planning to conserve dugongs and achieve harmonised marine spatial planning.
OCEAN & COASTAL MANAGEMENT
(2023)
Article
Engineering, Industrial
Hamed Sabahno, Giovanni Celano
Summary: This paper focuses on the monitoring of multivariate coefficient of variation (MCV) and develops multivariate Shewhart-type control charts capable of accounting for autocorrelation. The effect of autocorrelation on adaptive and non-adaptive charts is evaluated through a Markov chain model and extensive numerical analyses.
QUALITY TECHNOLOGY AND QUANTITATIVE MANAGEMENT
(2023)
Article
Automation & Control Systems
Quoc-Thong Nguyen, Vicent Giner-Bosch, Kim Duc Tran, Cedric Heuchenne, Kim Phuc Tran
Summary: A new one-sided adaptive control chart for monitoring the multivariate coefficient of variation (MCV) is proposed, incorporating a variable sampling interval (VSI) strategy on an exponentially weighted moving average (EWMA) scheme. The chart is shown to outperform competing charts under most circumstances, with formulas presented to optimally determine the parameters. The effects of measurement errors on the charts are also considered, along with an illustrative example.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2021)
Article
Engineering, Multidisciplinary
Heba N. Ayyoub, Michael B. C. Khoo, Ming Ha Lee, Abdul Haq
Summary: This study investigates the performance of control charts for detecting increasing MCV shifts in the presence of measurement errors. Mathematical expressions are derived to calculate the limits and average run lengths of the charts in the presence of measurement errors. An illustrative example with a real-life dataset demonstrates the implementation of the charts.
QUALITY AND RELIABILITY ENGINEERING INTERNATIONAL
(2021)
Article
Chemistry, Analytical
Felipe Bachion de Santana, Andre Marcelo de Souza, Fabiano de Carvalho Balieiro, Mirelly Mioranza, Renato Aragao Ribeiro Rodrigues, Ronei Jesus Poppi
Summary: This study proposed an analytical methodology based on near infrared spectroscopy and partial least squares regression for the measurement of stabilized and total soil organic carbon in agricultural production systems. Two strategies were identified that could determine the total and stabilized SOC from the total soil fraction simultaneously, eliminating the need for the fractionation phase.
BRAZILIAN JOURNAL OF ANALYTICAL CHEMISTRY
(2021)
Article
Engineering, Manufacturing
Sahand Yousefi, Mohammad Reza Maleki, Ali Salmasnia, Maryam Kiani Anbohi
Summary: This paper explores the impact of measurement system inability on the sensitivity of a multivariate control chart. The study finds that imprecise measurements degrade the detection ability of the control chart and suggests the use of multiple measurements to compensate for measurement errors.
JOURNAL OF ADVANCED MANUFACTURING SYSTEMS
(2023)
Article
Ecology
Marie Morfin, Nicolas Bez, Jean-Marc Fromentin
MARINE ECOLOGY PROGRESS SERIES
(2016)
Article
Multidisciplinary Sciences
Camille Assali, Nicolas Bez, Yann Tremblay
SCIENTIFIC REPORTS
(2017)
Article
Multidisciplinary Sciences
Marta Mega Rufino, Nicolas Bez, Anik Brind'Amour
Review
Ecology
Rocio Joo, Marie-Pierre Etienne, Nicolas Bez, Stephanie Mahevas
Article
Biodiversity Conservation
Marta M. Rufino, Nicolas Bez, Anik Brind'Amour
ECOLOGICAL INDICATORS
(2019)
Article
Ornithology
Camille Assali, Nicolas Bez, Yann Tremblay
JOURNAL OF AVIAN BIOLOGY
(2020)
Article
Biodiversity Conservation
Laura Mannocci, Fabien Forget, Mariana Travassos Tolotti, Pascal Bach, Nicolas Bez, Herve Demarcq, David Kaplan, Philippe Sabarros, Monique Simier, Manuela Capello, Laurent Dagorn
GLOBAL ECOLOGY AND CONSERVATION
(2020)
Correction
Biodiversity Conservation
Laura Mannocci, Fabien Forget, Mariana Travassos Tolotti, Pascal Bach, Nicolas Bez, Herve Demarcq, David Kaplan, Philippe S. Sabarros, Monique Simier, Manuela Capello, Laurent Dagorn
GLOBAL ECOLOGY AND CONSERVATION
(2021)
Article
Fisheries
Rocio Joo, Nicolas Bez, Marie-Pierre Etienne, Pablo Marin, Nicolas Goascoz, Jerome Roux, Stephanie Mahevas
Summary: This study identifies partnerships at sea among different fleets through fishing track analysis, finding that collaboration between vessels exists in various fisheries except for tuna purse-seiners. The analysis reveals exclusive partnerships between vessels, with pelagic pair trawlers and small bottom otter trawlers showing higher rates of exclusivity. This work demonstrates collective tactics at a pairwise level in diverse fisheries around the world.
ICES JOURNAL OF MARINE SCIENCE
(2021)
Article
Marine & Freshwater Biology
Thibault Cariou, Laurent Dubroca, Camille Vogel, Nicolas Bez
Summary: The study revealed that juvenile sole, dab, and plaice in the Seine estuary nursery grounds exhibit different spatial distribution preferences; analysis showed that their average positions remained stable over the past two decades, without significant changes related to the major stress of harbor development during 2000-2005.
ESTUARINE COASTAL AND SHELF SCIENCE
(2021)
Article
Multidisciplinary Sciences
Julie Salvetat, Nicolas Bez, Jeremie Habasque, Anne Lebourges-Dhaussy, Cristiano Lopes, Gildas Roudaut, Monique Simier, Paulo Travassos, Gary Vargas, Arnaud Bertrand
Summary: This study provides a comprehensive description of fish distribution in a tropical marine environment using acoustics and video observations. The research identifies the relationship between different fish species' spatial patterns and environmental factors and protection levels. The study also estimates the biomass of the black triggerfish and reveals the spatial asymmetry of fish distribution between euphotic and mesophotic reefs.
SCIENTIFIC REPORTS
(2022)
Article
Geosciences, Multidisciplinary
Nicolas Bez, Didier Renard, Dedah Ahmed-Babou
Summary: This study utilizes empirical orthogonal maps (EOMs) to analyze the spatiotemporal observations of octopus distribution off the Mauritanian coast. The results show that ten basic maps can recover 68% of the total variability, and the first two EOMs explain 38.4% of this variability. The paper clarifies the concept of orthogonality between factors in a spatial context, providing conditions for using Euclidean distance and reducing a large set of spatial distributions into a small subset of basic spatial distributions explaining most of the variability within the set of input maps.
MATHEMATICAL GEOSCIENCES
(2023)
Article
Environmental Studies
Hilaire Drouineau, Fabien Moullec, Didier Gascuel, Francis Laloe, Sterenn Lucas, Nicolas Bez, Patrice Guillotreau, Jerome Guitton, Pierre-Yves Hernvann, Martin Huret, Sigrid Lehuta, Marc Leopold, Stephanie Mahevas, Marianne Robert, Mathieu Woillez, Youen Vermard
Summary: Since the 1980s, the Common Fisheries Policy (CFP) has been criticized for its lack of protection for fishermen and ecosystems. The recent initiative led by French fishery scientists highlights the need for transparency, consultation, and urgency in the Mediterranean Sea. Scientists propose an ecosystem approach to fisheries and emphasize the importance of considering climate change in the reform of CFP.
Article
Multidisciplinary Sciences
Jerome Roux, Nicolas Bez, Paul Rochet, Rocio Joo, Stephanie Mahevas
Summary: This paper studies the neglected small graphs with high densities of connections and explores the relationship between Erds-Renyi, Fitness Scale-Free, Watts-Strogatz small-world, and geometric graphs and GCD(11) through numerical experiments. It also develops a randomization statistical test based on GCD(11) and applies it to a fishing case study to compare real-world graphs with four possible null models.
Article
Fisheries
Dedah Ahmed-Babou, Herve Demarcq, Beyah Meissa, Nicolas Bez
Summary: This study introduces the concept of portfolios of distribution maps, which consist of a reduced set of empirical orthogonal maps that best explain spatial biomass distributions of a given species over time. The approach is demonstrated using the distributions of common octopus off Mauritania over the last thirty years. The size of each portfolio represents the number of distinct spatial patterns describing octopus spatial distributions.
AQUATIC LIVING RESOURCES
(2023)