A5065461268- Marine and fisheries research
- Marine animal studies overview
- Fish Ecology and Management Studies
- Underwater Acoustics Research
- Marine Bivalve and Aquaculture Studies
- Coral and Marine Ecosystems Studies
- Coastal and Marine Management
- Marine and Offshore Engineering Studies
- Ichthyology and Marine Biology
- Cryospheric studies and observations
- Arctic and Antarctic ice dynamics
- Methane Hydrates and Related Phenomena
- Avian ecology and behavior
- Underwater Vehicles and Communication Systems
- Isotope Analysis in Ecology
- Identification and Quantification in Food
- Offshore Engineering and Technologies
- Soil Geostatistics and Mapping
- Water Quality Monitoring Technologies
- Genetic diversity and population structure
- Microplastics and Plastic Pollution
- Geological Modeling and Analysis
- Cell Image Analysis Techniques
- Machine Learning in Materials Science
- Simulation Techniques and Applications
Heriot-Watt University
2022-2025
University of Aberdeen
2015-2024
University of Edinburgh
2015
Marine Scotland
1999-2011
Scottish Government
2009
Instituto de Investigacao das Pescas e do Mar
2009
Marine Alliance for Science and Technology for Scotland
2000
We surveyed Antarctic krill ( Euphausia superba ) under sea ice using the autonomous underwater vehicle Autosub-2 . Krill were concentrated within a band between 1 and 13 kilometers south of edge. Within this band, densities fivefold greater than that open water. The under-ice environment has long been considered an important habitat for krill, but sampling difficulties have previously prevented direct observations over scale necessary robust density estimation. enabled us to make continuous...
Abstract An integrated ecosystem model including fishing and the impact of rising temperatures, relative to species’ thermal ranges, was used assess cumulative effect future climate change sustainable levels pressure on selected target species. Historically, important stocks cod whiting showed declining trends caused by high fisheries exploitation strong top-down control their main predators (grey seals saithe). In a no-change scenario these recovered under management scenarios due reduced...
Changes in fish distribution are being observed across the globe. In Europe's Common Fisheries Policy, share of catch each stock is split among management areas using a fixed allocation key known as ‘Relative Stability’: area, member states get same proportion total year. That largely based on catches made by those 1970s. can, therefore, result mismatch between quota shares and regional abundances within areas, with potential repercussions for status stocks fisheries that depend them....
Unsustainable fishing, driven by bycatch and discards, harms marine ecosystems. Addressing this, we propose a Coordinate-Aware Mask R-CNN (CAM-RCNN) method to enhance fish detection in commercial trawls. Leveraging CoordConv Group Normalization, our approach improves generalization stability. To tackle class imbalance, compound Dice cross-entropy loss is employed, image data are enhanced through multi-scale retinex color restoration. Evaluating on two fishing datasets, CAM-RCNN excels...
Abstract Korneliussen, R. J., Diner, N., Ona, E., Berger, L., and Fernandes, P. G. 2008. Proposals for the collection of multifrequency acoustic data. – ICES Journal Marine Science, 65: 982–994. Acoustic surveys are used to estimate abundance distribution many fish species, have been based traditionally on data collected at a single frequency. Although it has known some time that use additional frequencies can provide information nature target, knowledge technology required combine so-called...
Abstract Many commercial fish stocks are beginning to recover under more sustainable exploitation regimes. In this study, we document the temporal and spatial changes in one remarkable example of stock recovery: northern E uropean hake ( M erluccius merluccius ). Analysing data from several scientific surveys, a dramatic increase estimates biomass between 2004 2011 throughout larger area now occupied by stock. The largest occurred N orth S ea, where have been largely absent for over 50...
Thousands of artificial ('human-made') structures are present in the marine environment, many at or approaching end-of-life and requiring urgent decisions regarding their decommissioning. No consensus has been reached on which decommissioning option(s) result optimal environmental societal outcomes, part, owing to a paucity evidence from real-world case studies. To address this significant challenge, we asked worldwide panel scientists provide expert opinion. They were identify characterise...
Abstract Fernandes, P. G. 2009. Classification trees for species identification of fish-school echotraces. – ICES Journal Marine Science, 66: 1073–1080. Acoustic surveys provide valuable information on the abundance and distribution many fish species, but are particularly effective schooling pelagic commercial importance. However, despite recent advances in multifrequency processing, technique still requires some subjective judgement when allocating acoustic data, echotraces, to particular...
Abstract Increasing sea temperatures are predicted to decrease body size of marine ectotherms based on the temperature rule. This will impact fisheries yields, but empirical evidence process is still limited. We used fishery‐independent bottom trawl survey data from 1970 2017 examine trends length‐at‐age four commercially important demersal fish species (cod, haddock, whiting and saithe) in two study areas facing increasing temperatures: West Scotland North Sea. then compared with annual...
Abstract Autonomous underwater vehicles (AUVs) are unmanned submersibles that can be pre-programmed to navigate in three dimensions under water. The technological advances required for reliable deployment, mission control, performance, and recovery of AUVs have developed considerably over the past 10 years. Currently, there several operating successfully offshore industries as well applied academic oceanographic sciences. This article reviews application fisheries- plankton-acoustics...
Abstract Holmes, S. J., Bailey, N., Campbell, Catarino, R., Barratt, K., and Gibb, A., Fernandes, P. G. 2011. Using fishery-dependent data to inform the development operation of a co-management initiative reduce cod mortality cut discards. – ICES Journal Marine Science, 68: 1679–1688. The Scottish conservation credits scheme is voluntary programme introduced in 2008, designed discarding line with EU Common Fisheries Policy management objectives. was expanded 2009, building on initial...
Mesopelagic fish of the Myctophidae and Sternoptychidae families dominate biomass oceanic deep scattering layers and, therefore, have important ecological roles within these ecosystems. Interest in commercial exploitation is growing, so development techniques for estimating their abundance, distribution ultimately, sustainable are essential. The acoustic backscattering characteristics two size classes Maurolicus muelleri Benthosema glaciale reported here based on swimbladder morphology...
Imaging sonars are increasingly being utilised in fish surveys conjunction with or as substitutes for optical instruments. To justify the use of imaging sonars, we must first describe their application, limitations, and efficacy compared to optics. This study quantitative data assemblages obtained using operating at four frequencies (0.75, 1.2, 2.1, 3 MHz) simultaneous camera footage two artificial reefs. Fish densities were on average three times higher sonar than Greater detection by was...
Switching from fossil fuels to renewable energy is key international transition efforts and the move toward net zero. For many nations, this requires decommissioning of hundreds oil gas infrastructure in marine environment. Current international, regional national legislation largely dictates that structures must be completely removed at end-of-life although, increasingly, alternative options are being promoted implemented. Yet, a paucity real-world case studies describing impacts on...
Abstract Target identification remains a challenge for acoustic surveys of marine fauna. Antarctic krill, Euphausia superba, are typically identified through combination expert scrutiny echograms and analysis differences in mean volume backscattering strengths (SV; dB re 1 m−1) measured at two or more echosounder frequencies. For commonly used frequencies, however, the krill similar to those many co-occurring fish species that do not possess swimbladders. At South Georgia, Atlantic, one...