A5065309918- Marine and fisheries research
- Fish Ecology and Management Studies
- Marine Bivalve and Aquaculture Studies
- Coral and Marine Ecosystems Studies
- Isotope Analysis in Ecology
- Marine animal studies overview
- Wildlife Ecology and Conservation
- Underwater Acoustics Research
- Coastal and Marine Management
- Environmental DNA in Biodiversity Studies
- Species Distribution and Climate Change
- Identification and Quantification in Food
- Marine Biology and Ecology Research
- Ichthyology and Marine Biology
- Genetic diversity and population structure
- Fish Biology and Ecology Studies
- Spatial and Panel Data Analysis
- Statistical Methods and Bayesian Inference
- Oceanographic and Atmospheric Processes
- Bayesian Modeling and Causal Inference
- Marine Ecology and Invasive Species
- Bayesian Methods and Mixture Models
- Fish biology, ecology, and behavior
- Aquatic Ecosystems and Biodiversity
- Cognitive Science and Mapping
Ifremer
2016-2025
Institut Agro Rennes-Angers
2022-2025
Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
2022-2025
L'Institut Agro
2023
Institut Français
2014-2019
Biomathematics and Statistics Scotland
1996-1998
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 442:285-301 (2011) - DOI: https://doi.org/10.3354/meps09425 REVIEW Underwater acoustics for ecosystem-based management: state of science and proposals ecosystem indicators Verena M. Trenkel1,*, Patrick H. Ressler2, Mike Jech3, Marianna Giannoulaki4, Chris Taylor5 1Ifremer, rue de l'île d'Yeu, BP 21105, 44311...
Abstract Sustainable exploitation of marine populations is a challenging task relying on information about their current and past abundance. Fisheries‐related data can be scarce unreliable making them unsuitable for quantitative modelling. One fishery independent method that has attracted attention in this context consists estimating the effective population size ( N e ), concept founded genetics. We reviewed recent empirical studies carried out simulation study to evaluate feasibility large...
Discarding is an issue of increasing concern and there a growing number studies aiming at estimating discard amounts characteristics. However, the sampling design methods used in these generally rely on implicit assumptions. In this perspective, we examine available evidence favour or refuting We find that (i) assumptions most commonly for discards, namely discards are proportional to catch effort, not supported by evidence, (ii) both environmental conditions fishing influence composition...
Population and community indicators for the impact of fishing are often estimated using abundance estimates instead raw sampling observations. Methods presented testing null hypotheses nonsignificant impacts and, where possible, calculating statistical power. The considered concern populations (intrinsic growth rate, total mortality, exploitation a new indicator, change in mortality required to reverse population growth) communities (k- partial-dominance curves, biodiversity index, size...
Abstract Blanchard, J. L., Coll, M., Trenkel, V. Vergnon, R., Yemane, D., Jouffre, Link, S., and Shin, Y-J. 2010. Trend analysis of indicators: a comparison recent changes in the status marine ecosystems around world. – ICES Journal Marine Science, 67: 732–744. Time-series ecological exploitation indicators collected from 19 were analysed to investigate whether there have been temporal trends fish communities. Using linear non-linear statistical methods, are reported for six (mean length...
Abstract Implementing ecosystem‐based fisheries management requires indicators and models that address the impacts of fishing across entire ecological communities. However, complexity many ecosystems presents a challenge to analysis, especially if reliant on quantification because onerous task precisely measuring or estimating numerous parameters. We present qualitative modelling as complementary approach quantitative methods. Qualitative clarifies how community structure alone affects...
Abstract Effective population size ( N e ) is a key parameter of genetics. However, remains challenging to estimate for natural populations as several factors are likely bias estimates. These include sampling design, sequencing method, and data filtering. One issue inherent the restriction site‐associated DNA (RADseq) protocol missing SNP selection criteria (e.g., minimum minor allele frequency, number SNPs). To evaluate potential impact on estimates (Linkage Disequilibrium method) we used...
Abstract We present practical lessons learned from applying the recent close-kin mark–recapture (CKMR) abundance estimation method to thornback ray (Raja clavata). For CKMR, related individuals are identified their genotypes and number pattern is used for estimation. genotyped over 7000 collected in Bay of Biscay using Single Nucleotide Polymorphism (SNP) markers finding 99 parent–offspring pairs. The estimated adult rays central was around 135000 (CV 0.19) 2013. In total, four were drawn:...
Feeding preferences of Celtic Sea fishes were investigated using a database stomach content records, collected between 1977 and 1994. The diet cod Gadus morhua , hake Merluccius merluccius megrim Lepidorhombus whiffiagonis whiting Merlangius merlangus saithe Pollachius virens changed markedly as the animals grew larger, although large predators generally chose larger bodied prey, variability prey sizes consumed also increased. Large continued to select small, low value, benthic ( e.g ....
Abstract We present a method for combining individual indicator results into comprehensive diagnostic of fishing impacts on fish populations and communities. A conceptual framework interpreting combined trends in set simple indicators is proposed, relying beforehand qualitative expectations anchored ecological theory. The initial state the community first assessed using published information. Which combinations are acceptable or undesirable decided, depending status. then calculated from...
Abstract Trenkel, V. M., Mazauric, V., and Berger, L. 2008. The new fisheries multibeam echosounder ME70: description expected contribution to research. – ICES Journal of Marine Science, 65: 645–655. Recently, Simrad in collaboration with Ifremer developed a calibrated, multibeam, vertical (ME70) for We describe its capabilities technical limitations. ME70 has up 45 beams distinct frequencies the range 70–120 kHz, spanning at most 150°. All are stabilized vessel roll pitch. It reduced...
Abstract Rochet, M-J., Prigent, M., Bertrand, J. A., Carpentier, Coppin, F., Delpech, J-P., Fontenelle, G., Foucher, E., Mahé, K., Rostiaux, and Trenkel, V. M. 2008. Ecosystem trends: evidence for agreement between fishers' perceptions scientific information. – ICES Journal of Marine Science, 65: 1057–1068. The results a survey on recent changes in the eastern English Channel ecosystem carried out 2006 were compared with fishery bottom-trawl data. A hypothesis-testing framework was used,...
Fishery catch data offer a rich potential source of information for management, if modelling can separate out the effects fishing effort, species behaviour and population abundance. Here, we model from blue ling fishery off northwest coast Scotland, using generalised additive mixed models with space time interaction represented via novel tensor product soap film smooth penalized regression spline time. The use smoothers avoids imposing correspondences between spatially adjacent areas that...
Abstract The use of modelling approaches in marine science, and particular fisheries is explored. We highlight that the choice model used for an analysis should account question being posed or context management problem. examine a model-classification scheme based on Richard Levins' 1966 work suggesting models can only achieve two three desirable attributes: realism, precision, generality. Model creation, therefore, requires trading-off one these attributes favour other two: however, this...
Abstract Management strategy evaluation (MSE) is the state‐of‐the‐art approach for testing and comparing management strategies in a way that accounts multiple sources of uncertainty (e.g. monitoring, estimation, implementation). can help identify are robust to about life history target species its relationship other food web. Small pelagic fish anchovy, herring sardine) fulfil an important ecological role marine webs present challenges use MSE simulation‐based approaches. This due...
Abstract Environmental DNA (eDNA) metabarcoding is a method to detect taxa from environmental samples. It increasingly used for marine biodiversity surveys. As it only requires water collection, eDNA less invasive than scientific trawling and might be more cost effective. Here, we analysed data both sampling methods applied in the same survey targeting Northeast Atlantic fish Bay of Biscay. We compared regarding distribution taxonomic, phylogenetic, functional diversity. found that captured...
Abstract This study assesses the impact species ecology, fish reactions, and natural behaviour have on visual strip transect counts of deepwater carried out with an ROV (remotely operated vehicle). Two terraces one canyon were visited continental slope Bay Biscay. Species such as rabbit (Chimaeridae) North Atlantic codling (Lepidion eques) appear to avoided ROV. The vertical distance off bottom provided evidence that some individuals, in particular slickheads (Alepocephalidae) might been...
Summary 1. The development of ecosystem approaches to environmental management implies the need account for multiple pressures on ecosystems. Trends in metrics that respond differently changes major be combined evaluate impacts fishing and fish communities. 2. An exploited community is viewed as a three‐level food chain which two upper levels, or functional groups, are targeted by fleets, while lowest level subject variation. Qualitative modelling used predict at is, top‐down vs. bottom‐up...
The desire to predict the consequences of global environmental change has been driver towards more realistic models embracing variability and uncertainties inherent in ecology. Statistical ecology gelled over past decade as a discipline that moves away from describing patterns modelling ecological processes generate these patterns. Following fourth International Ecology Conference (1–4 July 2014) Montpellier, France, we analyse current trends statistical Important advances analysis...
Abstract The benefits of physiological biomarkers, knowledge and concepts are well-established in fish wildlife management as they confer the ability to understand mechanistic processes, identify cause-and-effect relationships, develop predictive models. Although this approach is gaining momentum context species conservation, use biomarkers exploited marine stock recovery plans remains relatively rare. Here, we present five essential issues consider implement fisheries management: (i) choice...
Abstract Trenkel, V. M., Rochet, M-J., and Mesnil, B. 2007. From model-based prescriptive advice to indicator-based interactive advice. – ICES Journal of Marine Science, 64: 768–774. Traditional for fisheries management, especially in the world, focuses on short-term stock projections relative reference points. Primarily, two numbers, spawning-stock biomass fishing mortality rate, are considered advice, although a range biological processes included assessment models. We propose an...
The ecosystem-based approach to fisheries management and, more specifically, the European Marine Strategy Framework Directive require assessment of state and dynamics an ecosystem in order determine suitable strategies. This paper takes analytical assess Bay Biscay early 1990s, chosen as a period reference because key monitoring data series have been collected since then. To ecosystem, pressures exerted by six broad categories human activities were examined. A literature review components...