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Susanne E. Tanner

Susanne E. Tanner
MARE - Marine and Environmental Sciences Centre

PhD

About

51
Publications
8,657
Reads
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1,133
Citations
Citations since 2017
27 Research Items
719 Citations
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2017201820192020202120222023050100150
2017201820192020202120222023050100150

Publications

Publications (51)
Article
The high demand and economic relevance of cephalopods make them prone to food fraud, including related to harvest location. Therefore, there is a growing need to develop tools to unequivocally confirm their capture location. Cephalopod beaks are non-edible, making this material ideal for traceability studies as it can also be removed without loss o...
Article
Full-text available
Truly sustainable development in a human-altered, fragmented marine environment subject to unprecedented climate change, demands informed planning strategies in order to be successful. Beyond a simple understanding of the distribution of marine species, data describing how variations in spatio-temporal dynamics impact ecosystem functioning and the...
Article
Large-scale, climate-induced synchrony in the productivity of fish populations is becoming more pronounced in the world's oceans. As synchrony increases, a population's 'portfolio' of responses can be diminished, in turn reducing its resilience to strong perturbation. Here we argue that the costs and benefits of trait synchronization, such as the e...
Article
Full-text available
Provenance and traceability are key aspects of seafood safety, supporting managers, and regula-tors, and allowing consumers to have clear information about the origin of the seafood products they consume. In the present study, we developed an innovative spectral approach based on total reflection X-ray fluorescence (TXRF) spectroscopy to identify t...
Article
Full-text available
In the context of expanding fish production and complex distribution chains, traceability, provenance and food safety tools are becoming increasingly important. Here, we compare the elemental fingerprints of gilthead seabream (Sparus aurata) muscle from the wild and different aquaculture productions (semi-intensive earth ponds; and intensive sea ca...
Data
Graphical abstract for our recent publication on the use of otoliths in fisheries science.
Article
Full-text available
Chemical analysis of calcified structures continues to flourish, as analytical and technological advances enable researchers to tap into trace elements and isotopes taken up in otoliths and other archival tissues at ever greater resolution. Increasingly, these tracers are applied to refine age estimation and interpretation, and to chronicle respons...
Article
Sea urchin gonads are an economically valuable seafood item, considered a delicacy in many parts of the world. However, its consumption can either pose a food safety threat, as they accumulate potentially toxic elements from contaminated environments or promote the depletion of natural stocks due to the high demand. Knowing their harvesting locatio...
Article
The European COST Action “Unifying Approaches to Marine Connectivity for improved Resource Management for the Seas” (SEA-UNICORN, 2020‐2025) is an international research coordination initiative that unites an interdisciplinary community of scientists and policymakers from over 100 organizations across Europe and beyond. It is establishing a globall...
Article
Full-text available
Truly sustainable development in a human-altered, fragmented marine environment subject to unprecedented climate change, demands informed planning strategies in order to be successful. Beyond a simple understanding of the distribution of marine species, data describing how variations in spatio-temporal dynamics impact ecosystem functioning and the...
Article
In recent years, validation of seafood authenticity and provenance has attracted the attention of authorities and consumers. Increasing levels of food fraud has raised awareness regarding seafood traceability, especially in highly valuable and highly consumed seafood products, such as the common octopus (Octopus vulgaris). Seafood traceability stud...
Article
Full-text available
The stalked barnacle Pollicipes pollicipes is an abundant species on the very exposed rocky shore habitats of the Spanish and Portuguese coasts, constituting also an important economical re-source, as a seafood item with high commercial value. Twenty-four elements were measured by untargeted Total Reflection X-ray Fluorescence spectroscopy (TXRF) i...
Article
The verification of food authenticity and provenance is a complex task and has raised public concern in recent years due to multiple episodes of food fraud and potential risks to consumers. In this sense, the evaluation of multi-elemental signatures is increasingly applied to confirm and validate the site of origin of animal products. Yet, we lack...
Article
Full-text available
The deep ocean ecosystem hosts high biodiversity and plays a critical role for humans through the ecosystem services it provides, such as fisheries and climate regulation. However, high longevity, late reproduction, and low fecundity of many organisms living in the deep ocean make them particularly vulnerable to fishing and climate change. A better...
Article
Connectivity between spawning grounds and recruitment areas of marine fish species drives population structure and dynamics, and may be affected by climate-induced changes in oceanographic processes. We analysed the variability in recruitment success of larvae to estuarine nursery areas along the Iberian Atlantic coast of four fish species with dis...
Article
Sclerochronological approaches using fish otoliths provide a powerful and cost-effective means to evaluate fish responses to environmental variations in regions where there is a paucity of long-term data. We hypothesised that the dynamism in the environmental conditions associated with El Niño Southern Oscillation (ENSO) events in the Southern Atla...
Article
The complexity and spatio‐temporal scale of populations’ dynamics influence how populations respond to large‐scale ecological pressures. Detecting and attributing synchrony (i.e. temporally coincident fluctuations in populations’ parameters) is key as synchronous populations can become more vulnerable to stochastic events that can affect the viabil...
Article
Full-text available
Variations in otolith elemental composition are widely used to reconstruct fish movements. However, reconstructing habitat use and environmental histories of fishes within estuaries is still a major challenge due to the dynamic nature of these coastal environments. In this study, we performed a laboratory experiment to investigate the effects of va...
Article
Climate change and fishing are drastically impacting marine ecosystems. Comprehending the biological consequences of these effects on commercially exploited fish is especially challenging. Here, we developed a 43-year otolith increment width-based growth chronology for one of the most important commercially exploited fish species in the Northeast A...
Article
Environmental change often combined with selective harvesting has profound and diverse impacts on marine fish populations. Unlocking the biological consequences of these effects on wild fish is notoriously challenging, especially in highly productive but naturally variable systems with uncertain futures such as Eastern Boundary current systems. Her...
Article
Full-text available
Processes regulating population connectivity are complex, ranging from extrinsic environmental factors to intrinsic individual based features, and are a major force shaping the persistence of fish species and population responses to harvesting and environmental change. Here we developed an integrated assessment of demographic and genetic connectivi...
Article
Reconstructing habitat use and environmental histories of fish via otolith chemistry relies on linking otolith chemical composition to the surrounding environment, as well as disentangling the consequences of ontogenetic or physiological effects that may mask environmental signals. We used multiple linear and linear mixed models to analyse the impo...
Article
Short-term variability in condition factor: relative condition factor Kn; biochemical condition: RNA:DNA and protein content; and instantaneous growth rates were determined in estuarine and coastal fish. Dicentrarchus labrax, Solea senegalensis and Pomatoschistus microps were sampled in the Tejo estuary, while Trachurus trachurus was sampled in an...
Article
Full-text available
Otolith microchemistry (Sr:Ca, Ba:Ca) was used to evaluate habitat use patterns of the endangered dusky grouper Epinephelus marginatus in southern Brazil. Individual Sr:Ca profiles exhibited low variation, with an overall tendency to increase with age. Interestingly, individual Ba:Ca profiles presented 3 contrasting patterns: the first comprised mo...
Article
Estuaries are highly valuable ecosystems that provide various goods and services to society, such as food provision and supporting nursery habitats for various aquatic species. Estuarine habitat quality assessment is thus critical in managing both ecological and economic value. In this work, various biological and non-biological indicators of habit...
Conference Paper
A better understanding of population dynamics including the identification of reproductive areas and their contribution to the maintenance of fish stocks is essential for population conservation. Dusky grouper, Epinephelus marginatus, is a broadly distributed fish species, usually found in marine rocky bottoms. It is currently listed as “endangered...
Article
Connectivity is a critical property of marine fish populations as it drives population replenishment, determines colonization patterns and the resilience of populations to harvest. Understanding connectivity patterns is particularly important in species that present ontogenetic migrations and segregated habitat use during their life history, such a...
Article
Connectivity and population structure are influenced by physical, biological and ecological processes and interactions that impact over a range of temporal scales. Therefore the best inference on population connectivity may be achieved by using multiple and potentially complementary techniques that integrate over different spatio-temporal scales. I...
Article
Full-text available
Otolith elemental signatures (Li:Ca, Mg:Ca, Mn:Ca, Cu:Ca, Sr:Ca, Ba:Ca and Pb:Ca) of age-0 juveniles of flounder Platichthys flesus and sea bass Dicentrarchus labrax, collected from estuarine systems along the Portuguese coast in 2006 and 2009 were used as baseline signatures to identify the estuarine nursery of age-3+ and 2+ coastal fish matching...
Article
Elemental composition of fish otoliths provides a valuable means to retrospectively determine a fish's environmental history over time. However, to reconstruct the patterns of fish movement and migration using otolith chemistry it is essential to establish the link between changing environmental variables, in particular, temperature, salinity and e...
Article
A better understanding of connectivity patterns between estuarine and coastal areas is fundamental towards sustainable management of estuarine associated fish and identification of ecologically important habitats. Otolith geochemistry (Li:Ca, Mg:Ca, Mn:Ca, Sr:Ca, Ba:Ca, Pb:Ca) determined in juveniles of Solea solea and Solea senegalensis in two yea...
Article
Population structure of European hake (Merluccius merluccius) remains poorly understood despite the need for such information for effective fisheries management of the species. Otolith geochemistry was used to examine movements of individuals among local populations and test the accuracy of current stock boundaries for the species. Age-1 European h...
Article
Full-text available
Otolith geochemistry is used increasingly as a natural tag to retrospectively determine habitat use in marine fishes. It is necessary to first conduct a thorough assessment of spatio-temporal variability before attempting to use the approach to determine estuarine residency or natal origins. In particular, knowledge of temporal variation at differe...
Article
Population structure of European hake (Merluccius merluccius) remains poorly understood despite the need for such information for effective fisheries management of the species. Otolith geochemistry was used to examine movements of individuals among local populations and test the accuracy of current stock boundaries for the species. Age-1 European h...
Article
Stable carbon and nitrogen isotopes (δ¹³C, δ¹⁵N) were used to analyse food web dynamics of two of the main estuaries of the Portuguese coast: Tejo and Mira. The ultimate sources of organic matter supporting production of some of the most abundant and commercially important fish species were determined; and seasonal, inter- and intra- estuarine diff...
Article
A description of variations in the chemical composition of fish otoliths at different spatial scales and life history stages is a prerequisite for their use as natural tags in fish population connectivity and migration studies. Otolith geochemistry of juvenile common sole (Solea solea), a marine migrant species collected in six Portuguese estuaries...
Article
The present study assessed condition of pouting (Trisopterus luscus Linnaeus, 1758) in nursery areas and other coastal areas along the Portuguese coast using different indices. Condition factor Fulton’s K, RNA : DNA ratio and total protein content were determined for 0-group pouting collected in three shallow nursery grounds. Adult pouting were sam...
Article
Connectivity between estuarine fish nurseries and coastal adult habitats can be affected by variations in juvenile growth and survival. Condition indices are renowned proxies of juvenile nutritional status and growth rates and are valuable tools to assess habitat quality. Biochemical (RNA:DNA ratio) and morphometric (Fulton's condition factor K) co...
Article
Connectivity is a critical property of marine populations, particularly for species with segregated juvenile and adult habitats. Knowledge of this link is fundamental in understanding population structure and dynamics. Young adults of commercially important fish species Solea solea, Solea senegalensis, Platichthys flesus, Diplodus vulgaris and Dice...
Article
Full-text available
Chemical composition of otoliths may provide valuable information in establishing connectivity between nursery grounds and marine coastal stocks. Juveniles of the commercially important fish species Solea solea, S. senegalensis, Platichthys flesus, Diplodus vulgaris and Dicentrarchus labrax were captured in 8 estuarine nursery grounds along the Por...

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Projects

Projects (6)
Project
Nowadays, seafood product chemical signatures are considered to be promising tools for the determination of food provenance, to tackle fraud, promote sustainable harvesting and production and build consumer trust, making the development of innovative tools and frameworks enabling us to determine seafood provenance crucial. These tools can include approaches using a suite of chemical natural tags such as element and isotopic compositions of soft tissues and hard biogenic structures (e.g., otoliths and shells), organic molecule chemical profiles (e.g., fatty acid profiles) or genomic approaches. In addition, a wide range of statistical chemometric approaches, including artificial intelligence (AI) and machine learning algorithms, can also be used to gather all the seafood product chemical characteristics from different provenances, and support the development of classification tools to validate the chemical profile from seafood products originating from different geographical origins, having the potential to refine provenance appraisals and generate outcomes not always readily anticipated by single markers. These chemical profiles also provide nutritional information regarding the seafood product, while simultaneously supporting certification frameworks for an added value of food products. Within this framework, this Special Issue will cover review articles, short communications and research papers addressing the application of chemical, biochemical and elemental tags with the purpose of tracking seafood product provenance and production methods, as well as statistical and chemometric approaches to improve the identification of the origin of seafood. https://www.mdpi.com/journal/molecules/special_issues/tags_seafood Deadline for manuscript submissions: 31 July 2022
Project
In a human-altered marine environment, fragmented and subjected to unprecedented climate change, planning sustainable strategies for development requires to understand the distribution of marine biodiversity and how its variations impact ecosystem functioning and the evolution of species. Functional Connectivity characterizes the migratory flows of organisms in the landscape. As such, it determines the ecological and evolutionary interdependency of populations, and ultimately the fate of species and ecosystems. Gathering effective knowledge on Marine Functional Connectivity (MFC) can therefore improve predictions of environmental change impacts and help refine management and conservation strategies for the Seas. This is challenging though, because marine ecosystems are particularly difficult to access and survey. Currently, >50 institutions investigate MFC in Europe, by using complementary methods from multiple research fields to describe the ecology and genetics of marine species. SEA-UNICORN aims at coordinating their research to unify the varied approaches to MFC and integrate them under a common conceptual and analytical framework for improved management of marine resources and ecosystems. For this, it will bring together a diverse group of scientists in order to collate existing MFC data, identify knowledge gaps, reduce overlap among disciplines, and devise common approaches to MFC. It will promote their interaction with connectivity theoreticians and ecosystem modelers, to facilitate the incorporation of MFC data into the projection models used to identify priorities for marine conservation. Lastly, it will forge strong working links between scientists, policy-makers and stakeholders to promote the integration of MFC knowledge into decision support tools for marine management and environmental policies.
Project
Understanding mechanisms of ecological resilience in a changing world is crucial to reach sustainable development and to prioritize conservation efforts. ReefNets will use an ecological network modelling approach (based on multiple communities, their interactions and functional traits) to improve the current knowledge on biodiversity response to human impacts on rocky reefs. To achieve this aim, ReefNets will assess functional trait-environment relationships and redundancy among multiple taxonomic groups and the ecological processes driving the coexistence of species. Network models will be then used to predict changes in marine communities under different scenarios of anthropogenic impacts (e.g. climate change, fishing, pollution), while investigating how ecological resilience is affected by the complexity of the network. Based on these results, ReefNets will ultimately define suitable ecological indicators useful to further monitor status and impacts on rocky reef habitats.