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Estibaliz Díaz

Estibaliz Díaz
AZTI · Marine Research Division

PhD

About

53
Publications
8,841
Reads
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202
Citations
Citations since 2017
14 Research Items
140 Citations
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201720182019202020212022202301020304050
Additional affiliations
May 2004 - present
AZTI-Tecnalia Sukarrieta, Spain
Position
  • Senior Researcher
October 1997 - September 2002
Universidad del País Vasco / Euskal Herriko Unibertsitatea
Position
  • PhD Student

Publications

Publications (53)
Technical Report
Full-text available
This report presents the calibration of the EDA model in France, Spain and Portugal during the SUDOANG project. The objective was to predict escapement of silver eel. https://sudoang.eu/en/task-groups/. Some of the outputs are detailed in the Atlas. https://www.researchgate.net/publication/357909065_Atlas_of_European_eel_distribution_Anguilla_angui...
Technical Report
Full-text available
The Joint EIFAAC/ICES/GFCM Working group on eels (WGEEL) met by correspondence and video conference from September 7 – 10 September and 27 September – 4 October in 2021 to assess the state of the European eel and its fisheries, investigate the effects of contaminants on the reproductive capacity of the eel stock, discuss the findings of WKFEA, furt...
Article
Full-text available
Anguillid eels are found globally in fresh, transitional and saline waters and have played an important role in human life for centuries. The population status of several species is now of significant concern. The threats to populations include direct exploitation at different life stages, blockages to migratory routes by dams and other structures,...
Technical Report
Full-text available
The SUDOANG project aims at providing common tools to managers to support eel conservation in the SUDOE area (Spain, France and Portugal). VISUANG is the SUDOANG Interactive Web Application that will host all these tools. The application consists of an eel distribution atlas (GT1), assessments of mortalities caused by turbines and an atlas showing...
Article
Full-text available
Mistrust between scientists and non-scientist stakeholders is a key challenge in fishery management. The support of management with complex models is difficult, as these models cannot easily communicate their results to end users, resulting in a lack of confidence. As an example, the complex life cycle of the European eel raises problems of coordin...
Preprint
Mistrust between scientists and non-scientist stakeholders is a key challenge in fishery management. This problem is exacerbated with the use of complex models to support management: these models suffer from difficulties in communicating their results and a lack of confidence from end users. The European eel is an illustrative example; its complex...
Technical Report
Full-text available
The Joint EIFAAC/ICES/GFCM Working group on eels (WGEEL) met by correspondence and video conference from September 21–28 in 2020 to assess the state of the European eel, investigate the effects of habitat loss on the eel stock and its management, review and update the Stock Annex, prepare the 2021 Data Call and report on any updates to the scientif...
Technical Report
Full-text available
The diversity of detrimental factors impacting the European eel and the number of involved stakeholders pose a challenge for an effective stock management. Knowledge on the economic consequences of single management measures is required to better assess their implications for the involved sectors. This study summarizes the current knowledge on thre...
Article
Full-text available
European eels (Anguilla anguilla) migrate between the southwestern Sargasso Sea and the European and Mediterranean coasts. In a recent paper in Current Biology, Naisbett-Jones et al. [1] claim to “provide the first evidence that they [eels] derive positional information from the Earth's magnetic field” and that this information guides their migrati...
Article
Full-text available
European eel (Anguilla anguilla) recruitment has been declining at least since the early 1980s at the scale of its distribution area. Since the population is panmictic, its stock assessment should be carried out on a range-wide basis. However, assessing the overall stock during the continental phase remains difficult given its widespread distributi...
Poster
Full-text available
Factors as commercial exploitation, habitat loss, dam and weir construction, hydropower, pumping stations and surface water abstractions are mentioned to explain the critical eel population situation. But, oceanic and climatic factors should also be considered since they influence the first eel stages and larval migration. Thus, the assessment of t...
Conference Paper
The status of European eel is critical; the annual recruitment of glass eel to European waters in 2015 was 8.4% of the 1960–1979 level in the central southern European estuaries (ICES 2015). The causes of the decline are unclear, it has been hypnotized that it is linked to a strong reduction in the spawning stock due to overfishing, habitat destruc...
Conference Paper
The stock of the European eel A. anguilla is outside safe biological limits (ICES 1999 and thereafter). According to EU legislation launched in 2008, EU countries have to implement an eel management plan (EMP) including measures that allow 40 % of adult eels to escape from inland waters to the sea, where they can spawn. However, according to the la...
Conference Paper
In 1999 the ICES working Group on eel stated that the stock of the European eel was outside safe biological limits. In 2007, the EU launched the regulation (1100/2007) forcing countries to implement an eel management plan (EMP) including measures that would allow 40 % of adult eels to escape from inland waters to the sea, where they can spawn. Ac...
Conference Paper
There is a great heterogeneity in the manner in which landing data are reported in each country, which makes the european eel fishery overall trend analysis a complicate task. Some countries have an official system, which then reports either total landings or landings split by Management Unit or Region. Some countries do not have any centralized sy...
Conference Paper
Since Schmidt identified the presumed spawning area of European eel in 1920, scientists have tried to discover how glass eels and silver eels performed the round trip of at least 6000 km to the North African and European coasts. The availability of new technics has allowed solving partially some of the mysteries. During this communication, we will...
Article
Full-text available
The size of the European eel population is below safe biological limits. To assess the status of the stock properly, it is necessary to increase the number of recruitment series based on scientific monitoring. In this study, the spatio-temporal variation in glass eel density in a South European Atlantic estuary, the Oria, has been examined using ex...
Conference Paper
The objective of the European Commission Eel Recovery Plan (CR No 1100/2007) to protect and restore the European eel stock is to allow the escapement to the sea of at least 40% of the silver eel biomass relative to the pristine biomass. The Member states must submit a management plan progress report to the Commission every three years starting in 2...
Conference Paper
The aim of the present study is to test viability of restocking Anguilla anguilla (L. 1758) in the Oria river basin which must be implemented inside the Eel Management Plan of the Basque Country. The project is supported by Fundación Biodiversidad (Public Foundation of Spanish Ministry), Provincial Council of Gipuzkoa and the Basque Water Agency. T...
Article
Full-text available
Sardine larvae are forced to grow as fast as possible to reduce larval mortality. Thus, changes in biochemical composition during the first steps of sardine larval growth are intended to maximize larval growth rate efficiency and survival. Protein and RNA weight-specific growth rates were the highest and their corresponding doubling times the short...
Article
Full-text available
La anguila europea (Anguilla anguilla), un animal que posee una de las "biografías" más interesantes y ajetreadas del mundo, se encuentra en un momento crucial para su conservación. El reclutamiento de angulas en Europa ha sufrido un intenso declive durante los últimos 25 años, por lo que en 2007 el Consejo de Ministros Europeo adoptó unas medidas...
Article
Full-text available
The growth strategies of pelagic larvae of 3 fish species from the Bay of Biscay belonging to 2 different shape groups, the eel-like anchovy Engraulis encrasicolus and sardine Sardina pilchardus, and the tadpole-like horse mackerel Trachurus trachurus, are compared in terms of changes in their biochemical composition and energy allocation. In ancho...
Article
Full-text available
Growth and condition of larval Engraulis encrasicolus larvae in the Bay of Biscay were analysed relative to their biochemical composition. Protein, carbohydrate, lipid, DNA and RNA contents of larvae were quantified during larval ontogeny to analyse changes associated with growth. Proteins were the main organic component of E. encrasicolus at every...
Article
The nutritional environment for fish larvae is analysed for the Basque continental shelf (Bay of Biscay), during the main anchovy-spawning period (spring) over two years. The quantity and quality of Suspended Particulate Matter (seston) is analysed for total particles, microparticles (20–200 μm) and mesoparticles (200–1000 μm). Separately, the char...
Article
The reproductive response involving egg number and size was studied for the egg carrying copepod Euterpina acutifrons in two estuaries with different nutritional environment (Bilbao and Mundaka). To characterise the available food for copepods, the concentration of particulate organic matter (POM), the combined concentration (PGL) and proportion of...

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Projects

Projects (2)
Project
Within the SUDOANG project we aim at developping the EDA model to France, Spain and Portugal More info at www.sudoang.eu
Project
General objective is to provide tools and joint methods that support the conservation of the european anguilla and its habitat to managers in the sudoe area. The Specific objectives are 1. To provide joint evaluation and management tools for european eel and its habitat to the agents of the sudoe area. 2. To design a strategy in order to obtain data for a long-term and coordinated monitoring of the population of anguila in the sudoe area. 3. To strengthen the cooperation of the agents involved in the governance of eel and its habitat in the sudoe area. More info at www.sudoang.eu