Iosu Paradinas

Iosu Paradinas
Asociación Ipar Perspective

PhD in statistics and BSc in marine biology

About

35
Publications
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417
Citations

Publications

Publications (35)
Preprint
Full-text available
Combining data has become an indispensable tool for managing the current diversity and abundance of data. But, as data complexity and data volume swell, the computational demands of previously proposed models for combining data escalate proportionally, posing a significant challenge to practical implementation. This study presents a sequential cons...
Article
Full-text available
Estimating changes in the biomass of a fish stock is crucial for successful management. However, fishery assessment may be affected by the quality of the inputs used in stock assessment models. Survey biomass indices derived from fishery-independent and catch per unit effort (CPUE) biomass indices derived from fishery-dependent data are key inputs...
Article
Full-text available
Effective and sustainable management of small-scale fisheries (SSF) is challenging. We describe a novel approach to identify important fishing grounds for SSF, by implementing a habitat modelling approach, using environmental predictors and Automatic Identification System (AIS)-B data coupled with logbook and First Sales Notes data, within the SE B...
Preprint
Full-text available
European hake Merluccius merluccius is a commercially important fish species that is known to have a marked bathymetric preference. No other environmental variable has yet been identified to drive the distribution of hake. This study looked into different climatic variables at different depths and identified sea bottom temperature, sea bottom disso...
Preprint
Full-text available
Continuous space species distribution models (SDMs) have a long-standing history as a valuable tool in ecological statistical analysis. Geostatistical and preferential models are both common models in ecology. Geostatistical models are employed when the process under study is independent of the sampling locations, while preferential models are empl...
Article
Full-text available
Species Distribution Models often include spatial effects which may improve prediction at unsampled locations and reduce Type I errors when identifying environmental drivers. In some cases ecologists try to ecologically interpret the spatial patterns displayed by the spatial effect. However, spatial autocorrelation may be driven by many different u...
Preprint
Full-text available
In ecology we may find scenarios where the same phenomenon (species occurrence, species abundance, etc.) is observed using two different types of samplers. For instance, species data can be collected from scientific surveys with a completely random sample pattern, but also from opportunistic sampling (e.g., whale or bird watching fishery commercial...
Article
Full-text available
Species Distribution Models are pivotal for fisheries management. There has been an increasing number of fishery data sources available, making data integration an attractive way to improve model predictions. A wide range of methods have been applied to integrate different datasets in different disciplines. We focus on the use of Integrated Species...
Technical Report
Full-text available
The objective of WKFISHDISH2 was to develop a standardized and open-source way of routinely using trawl survey data to produce distribution maps which can be easily updated. To do so, workshop participants (i) reviewed models that can produce distribution maps from survey data in DATRAS and MEDITS formats, (ii) considered best practice guidance for...
Technical Report
The objective of WKFISHDISH2 was to develop a standardized and open-source way of routinely using trawl survey data to produce distribution maps which can be easily updated. To do so, workshop participants (i) reviewed models that can produce distribution maps from survey data in DATRAS and MEDITS formats, (ii) considered best practice guidance for...
Article
Full-text available
Marine protected areas (MPAs) are a promising management tool for the conservation and recovery of marine ecosystems, as well as fishery management. MPAs are generally established as permanent closures but marine systems are dynamic, which has generated debate in favour of more dynamic designs. As a consequence, the identification of priority areas...
Article
The common sole (Solea solea) is a species of flatfish of great commercial relevance in the northern Atlantic Iberian waters. Although many studies investigated the early life-stage of this species, little is known on the adult phases and the size structure of the population. Here we provide an analysis of the spatiotemporal distribution of adult’s...
Article
Full-text available
In this work, we discuss the use of a methodological approach for modelling spatial relationships among species by means of a Bayesian spatial coregionalized model. Inference and prediction is performed using the integrated nested Laplace approximation methodology to reduce the computational burden. We illustrate the performance of the coregionaliz...
Preprint
Full-text available
Fishery restricted areas (FRAs) are pivotal for the mitigation of fishery impacts, but the designation of optimum FRAs is complex, and currently there is no quantitative guideline to assess the spatio-temporal variability of conservation priority areas. Fishery systems are naturally dynamic, and shifts may at two different levels, the species level...
Article
Full-text available
The protection of fish nurseries has been recognized as a useful tool to efficiently manage fisheries given that protected areas enhance the recruitment of target species. To identify and locate potential nursery areas, a solid understanding of species-environment relationships and their spatio-temporal dynamics is needed. Within this context, in t...
Article
Full-text available
Understanding the spatiotemporal persistence of fish distributions is key to defining fish hotspots and effective fisheries restricted areas (FRAs). Hierarchical Bayesian spatiotemporal models provide an excellent framework to understand these distributions as they can accommodate different spatiotemporal behaviour in the data, primarily due to the...
Article
Full-text available
As Uhlman et al. (2014) say, discard rates are highly variable at European level and are more heterogeneous across regions than in different fisheries. Therefore, it is known that there are variations at the regional level, but it is unknown if these differences are given to Mesoscale, in a radius of approximately 200km. The objective of the presen...
Chapter
Full-text available
A sensible approach to minimize discards is to avoid areas or seasons where unwanted catch may be present. The implementation of a Marine Spatial Planning (MSP) approach to discard management requires the understanding of marine biological processes, as well as fishing conditions at a defined spatial scale. Mathematical models that analyze the spat...
Article
Full-text available
Species Distribution Models (SDMs) are now being widely used in ecology for management and conservation purposes across terrestrial, freshwater, and marine realms. The increasing interest in SDMs has drawn the attention of ecologists to spatial models and, in particular, to geostatistical models, which are used to associate observations of species...
Technical Report
Full-text available
This study compared different spatio-temporal model structures to infer the distributional patterns of Mullus barbatus in the GSA06 of the Spanish Mediterranean using MEDITS trawl survey data, whic is performed every year in spring. Results indicate that Mullus barbatus follows a very persistent distribution at this time of the year.
Technical Report
Full-text available
This study compared different spatio-temporal model structures to infer the distributional patterns of Lophius budegassa the GSA06 of the Spanish Mediterranean using MEDITS trawl survey data, which is performed every year in spring. Results indicate that Lophius budegassa follows a rather opportunistic distribution at this time of the year.
Technical Report
Full-text available
This study compared different spatio-temporal model structures to infer the distributional patterns of Illex coindetii in the GSA06 of the Spanish Mediterranean using MEDITS trawl survey data, whic is performed every year in spring. Results indicate that Illex coindetii follows a rather opportunistic distribution at this time of the year.
Technical Report
Full-text available
This study compared different spatio-temporal model structures to infer the distributional patterns of Mullus barbatus in the GSA06 of the Spanish Mediterranean using MEDITS trawl survey data, which is performed every year in spring. Results indicate that Mullus barbatus follows a very persistent distribution at this time of the year.
Technical Report
Full-text available
This study compared different spatio-temporal model structures to infer the distributional patterns of Merluccius merluccius the GSA06 of the Spanish Mediterranean using MEDITS trawl survey data, whic is performed every year in spring. Results indicate that Merluccius merluccius follows a progressive distribution, with certain persistence, at this...
Technical Report
Full-text available
This study compared different spatio-temporal model structures to infer the distributional patterns of Lophius piscatorius the GSA06 of the Spanish Mediterranean using MEDITS trawl survey data, which is performed every year in spring. Results indicate that Lophius piscatorius follows a opportunistic distribution at this time of the year.
Article
Full-text available
Many ecological processes are measured as proportions and are spatially sampled. In all these cases the standard procedure has long been the transformation of proportional data with the arcsine square root or logit transformation, without considering the spatial correlation in any way. This paper presents a robust regression model to analyse this k...
Article
Understanding the spatio-temporal dynamism and environmental relationships of species is essential for the conservation of natural resources. Many spatio-temporally sampled processes result in continuous positive [0, ∞) abundance datasets that have many zero values observed in areas that lie outside their optimum niche. In such cases the most commo...
Poster
Atlantic bluefin tuna, managed by the International Commission for the Conservation of Atlantic Tunas (ICCAT), is a top predator emblematic species with a key role in marine ecosystems. In spring bluefin tuna adults travel a long distance to reproduce in very confined areas such as the Balearic Sea, a major spawning ground worldwide located in the...
Article
The spatial management of fisheries has been repeatedly proposed as a discard mitigation measure. A number of studies have assessed the fishing suitability of an area based on units of by-catch or discard per unit effort. However, correct identification of fishing-suitable areas should assess biomass loss with respect to the benefits. This study th...
Article
Full-text available
Spatial and temporal closures of fish nurseries have recently been recognized as useful tools for an efficient fisheries management, as they preserve the reproductive potential of populations and increase the recruitment of target species. In order to identify and locate potential spatio-temporal closures, a solid knowledge of species-environment r...

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