M. Begoña Santos

M. Begoña Santos
Instituto Español de Oceanografia | IEO · Centro Oceanográfico de Vigo

PhD

About

216
Publications
75,496
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6,095
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Publications

Publications (216)
Article
Full-text available
Parasite biodiversity in cetaceans represents a neglected component of the marine ecosystem. This study aimed to investigate the distribution and genetic diversity of anisakid nematodes of the genus Anisakis sampled in cetaceans from the Northeast Atlantic Ocean and the Mediterranean Sea. A total of 478 adults and pre-adults of Anisakis spp. was id...
Article
Full-text available
Species Distribution Models are commonly used with surface dynamic environmental variables as proxies for prey distribution to characterise marine top predator habitats. For oceanic species that spend lot of time at depth, surface variables might not be relevant to predict deep-dwelling prey distributions. We hypothesised that descriptors of deep-w...
Preprint
Full-text available
Species Distribution Models are commonly used with surface dynamic environmental variables as proxies for prey distribution to characterise marine top predator habitats. For oceanic species that spend lot of time at depth, surface variables might not be relevant to predict deep-dwelling prey distributions. We hypothesised that descriptors of deep-w...
Article
Full-text available
Marine mammals have been proposed as ecosystem sentinels due to their conspicuous nature, wide ranging distribution, and capacity to respond to changes in ecosystem structure and functioning. In southern European Atlantic waters, their response to climate variability has been little explored, partly because of the inherent difficulty of investigati...
Article
Full-text available
In habitat modelling, environmental variables are assumed to be proxies of lower trophic levels distribution and by extension, of marine top predator distributions. More proximal variables, such as potential prey fields, could refine relationships between top predator distributions and their environment. In situ data on prey distributions are not a...
Article
Common dolphins (Delphinus delphis) are top predators, feeding on a wide variety of prey species, several of which are also targeted by fisheries. The last remaining healthy group of the endangered Mediterranean common dolphin subpopulation is located in the Alboran Sea. Their feeding grounds overlap with the fishing grounds of trawlers targeting E...
Technical Report
Full-text available
Maturity parameters of the megrim (Lepidorhombus whiffiagonis) and the four spot megrim (L. boscii) stocks in Atlantic Iberian waters (Div. 8.c-9.a) and in Celtic Seas and northern Bay of Biscay (Div. 7.b-k, 8.abd) Abstract The maturity ogives of megrim (L whiffiagonis) and four spot megrim (L. boscii) stocks in Atlantic Iberian waters (ICES Div. 8...
Article
Protected areas (PAs) are increasingly being used worldwide for the conservation and management of wildlife. Systematic conservation planning (SCP) aims at ensuring biodiversity persistence while minimizing the threats faced by the species and/or the economic costs related to protection. To account for spatio‐temporal interactions between species a...
Article
Effective conservation and management measures are needed to face the unprecedented changes that marine ecosystems, and particularly marine megafauna, are suffering. These measures require the identification of high-value biodiversity areas (HVBAs) which in turn require the identification of the essential ocean variables (EOVs) that shape the envir...
Article
In marine ecosystems, seabird populations are well monitored, thus allowing their use as indicators of system fluctuations at multiple spatio-temporal scales. Population abundance estimates are essential features of any conservation and management measures and initiatives. Population abundances can be used to delineate the distribution range and fo...
Article
Full-text available
Distribution maps of cetaceans and seabirds at basin and monthly scales are needed for conservation and marine management. These are usually created from standardised and systematic aerial and vessel surveys, with recorded animal densities interpolated across study areas. However, distribution maps at basin and monthly scales have previously not be...
Article
The marine environment faces an increasing number of threats, mainly driven by anthropogenic activities, that are causing growing impacts on marine species and processes. In Europe, the EU Marine Strategy Framework Directive (MSFD) aims to achieve or maintain Good Environmental Status (GES) of the European waters by 2020. The Directive specifically...
Article
In the last few decades, there has been a remarkable development of niche models to help understand the ecological response of species to current rapid environmental changes. In the present study, we applied niche modelling to the megafauna community of shelf waters of the northwestern (NW) and northern Iberian Peninsula in order to analyse the coe...
Article
Full-text available
Aim During their migration, highly mobile species cross multiple jurisdictional boundaries and multiple not‐specific marine protected areas (MPAs). When identifying the critical habitats where individuals aggregate, these areas can be ideal candidates for MPAs. This study was focused on the endangered fin whale (Balaenoptera physalus) for which the...
Article
Plastic debris is currently recognised as one of the major global threats to marine life. However, few data exist on the presence and abundance of microplastics (plastics < 5 mm in size) in marine mammals. This is the first record of the presence of microplastics in the digestive tracts of marine mammals from the Iberian Peninsula. This study made...
Technical Report
Full-text available
This document, the MRR, includes the description of the criteria and species assessed, along with compilation of the results obtained during the implementation of the pilot monitoring programmes under the MSFD for marine birds, mammals and turtles in the three Macaronesian archipelagos (Azores, Madeira and Canary Islands) but also from other additi...
Article
Aim Deep‐diving cetaceans are oceanic species exposed to multiple anthropogenic pressures including high intensity underwater noise, and knowledge of their distribution is crucial to manage their conservation. Due to intrinsic low densities, wide distribution ranges and limited presence at the sea surface, these species are rarely sighted. Pooling...
Article
This Special Issue on Crustacean Genomics arises from the TCS 2017 conference held in Barcelona, Spain, between 19 and 22 June, 2017. Applications of next generation sequencing have expanded rapidly over recent years, unveiling many new and exciting areas of genomic research. This includes novel insights into physiology, reproductive biology, respo...
Poster
Los análisis de los contenidos estomacales de mamíferos marinos proporcionan información valiosa sobre su dieta, ecología y uso de hábitat, además de ayudar a entender posibles conflictos con la pesca. Aunque las dietas de otras especies de cetáceos en el noroeste de la Península Ibérica se han estudiado en detalle, hay muy poca información disponi...
Conference Paper
Full-text available
In the last few decades, there has been a remarkable development of niche models to help understand the ecological response of species to current rapid environmental changes. In the present study, we applied niche modelling to the predator community of the northern and northwestern shelf waters of the Iberian Peninsula to analyse the coexistence of...
Poster
Full-text available
The intensity of threats that marine habitats are suffering is increasing and they are mostly driven by anthropogenic pressures (e.g. overfishing or pollution). In addition, non-directly anthropogenic driven threats are also becoming serious threats due to global changes (e.g. extreme weather events or increasing of temperatures). In Europe, the EU...
Data
This repository, developed under the ICES Science Fund Project, includes detailed and innovative information about the different human uses and impacts on the oceans and their drivers. Research on marine social-ecological systems (SES) and sustainability goes with calls for deep social change (Steffen et al. 2015). Most of the research done on mar...
Conference Paper
Full-text available
In habitat modelling, environmental variables (e.g. depth, slope, sea surface temperature) are assumed to be good indicators of lower trophic levels distribution and thus good proxies of top predator’s distribution. However, as marine top predators are supposed to be mostly sensitive to prey abundance, the use of more proximal variables, such as pr...
Article
The Mediterranean subpopulation of common dolphin (Delphinus delphis) is classified as endangered by the IUCN. Still, information about their diet in the Mediterranean is scarce. Stomach contents of 37 common dolphins stranded in the Alboran Sea and Strait of Gibraltar were analyzed. A total of 13,634 individual prey of 28 different taxa were ident...
Conference Paper
Full-text available
Knowledge on the distribution patterns of deep-diving cetaceans, here beaked whales and sperm whales, is limited. They are oceanic species threatened by anthropogenic activities which produce high intensity submarine noise. To mitigate the impact of these activities, good knowledge on their distribution is crucial. However, due to their low densiti...
Poster
Full-text available
La identificación de áreas marinas importantes para los mamíferos marinos es crucial para desarrollar guías de conservación espacial para estas especies protegidas y la posibilidad de su monitoreo anual es esencial para comprender mejor los cambios en su distribución y abundancia. Cada año, las campañas multidisciplinares JUVENA se llevan a cabo co...
Data
A multi-species model for fisheries-cetaceans interactions was developed focusing on the southern stock of the European hake (Merluccius merluccius) and two cetacean species identified to be important hake predators: common dolphin (Delphinus delphis) and bottlenose dolphin (Tursiops truncatus). We explored the effects of fisheries management measu...
Article
Monitoring and assessment of the status of marine mammal populations is a requirement of the European Marine Strategy Framework Directive (MSFD). Due to the difficulty of collecting data in the marine environment and because many populations of these highly mobile species inhabit waters of several Member States, monitoring of marine mammals is part...
Article
The trophic position of sardine (Sardina pilchardus) in spring was determined from the analysis of the natural abundance of stable nitrogen isotopes in the southern Bay of Biscay between 1998 and 2014. Mesozooplankton (200-500. μm) was employed as the reference baseline, as its isotopic signature tracked the seasonal development of phytoplankton bl...
Article
Full-text available
The incidence of cetacean strandings is expected to depend on a combination of factors, including the distribution and abundance of the cetaceans, their prey, and causes of mortality (e.g. natural, fishery bycatch), as well as currents and winds which affect whether carcasses reach the shore. We investigated spatiotemporal patterns and trends in th...
Conference Paper
The fin whale (Balaenoptera physalus) is a cosmopolitan species occurring in all major oceans usually in temperate and polar latitudes. This species performs latitudinal migrations and their study in southern European areas remains scarce, such as in the Bay of Biscay. Despite their large distribution range, obtaining precise spatial estimations of...
Article
Full-text available
In addition to crustaceans, remains from 17 individual squid were found in the stomach of a 58 cm slender sunfish Ranzania laevis from Australia, adding a new prey item to their little studied diet. Taken together with existing data from the literature, crustaceans appear to be a common prey item, with larger R. laevis (26-65 cm) also taking small...
Conference Paper
The application of genetic/molecular markers to nematodes of the genus Anisakis, parasites of cetaceans in all world’s seas and oceans, has advanced the understanding of their systematics, taxonomy, ecology and phylogeny. These methodologies have allowed the detection of new species and outline the co-evolutionary processes between Anisakis and the...
Article
In spite of their oceanic habitat, deep diving cetacean species have been found to be affected by anthropogenic activities, with potential population impacts of high intensity sounds generated by naval research and oil prospecting receiving the most attention. Improving the knowledge of the distribution and abundance of this poorly known group is a...
Article
Concentrations of thirty two polychlorinated biphenyls (PCBs) were determined in the blubber of five sympatric species of odontocetes stranded or by-caught along the Northwest coast of the Iberian Peninsula: common dolphin (Delphinus delphis), long-finned pilot whale (Globicephala melas), harbour porpoise (Phocoena phocoena), striped dolphin (Stene...
Article
Full-text available
Unfortunately, the name of the author “Maria Begoña Santos” was incorrectly published in the original version, which is corrected in this erratum.
Conference Paper
The goblin shark Mitsukurina owstoni Jordan, 1898 (Chondrichthyes: Lamniformes:Mitsukurinidae) is a poorly known deepwater shark. The species is distributed worldwide in deep waters down to 1500 m and most records are at upper slopes, submarine canyons and ridges. This shark is very characterized by a long and well depressed paddle-like snout, slen...
Article
Full-text available
The genus Octopoteuthis includes squids inhabiting meso- and bathypelagic waters worldwide. Of the seven presently named species distributed in the world’s oceans, only Octopoteuthis sicula has been reported for certain in the Mediterranean Sea to date. However, mixed and confusing descriptions of the systematic characters useful for identifying th...
Conference Paper
Full-text available
The Spanish multidisciplinary survey PELACUS is carried out annually to study pelagic marine ecosystem and evaluate fishing resources of the North and Northwest shelf waters of the Iberian Peninsula. Linear transects perpendicular to the coast distant 8 nm each and up to the 1000 m isobath are prospected acoustically at a speed of 10 knots between...
Conference Paper
Full-text available
In Galicia, NW Spain, a stranding network run by the non-governmental organisation CEMMA since 1990. The common dolphin (Delphinus delphis) is the most frequently stranded cetacean and a total of more than 2600 common dolphins has been recorded on the 25 years that the stranding network has been operational. Most marine debris (composed mainly of p...
Conference Paper
Full-text available
In several parts of the NE Atlantic cetacean strandings monitoring has been ongoing for the last two and a half decades, providing long series of stomach contents data, especially for harbour porpoise and common dolphin but also to a lesser extent for several other small cetacean species. Interpretation of such data can be challenging due to hetero...
Data
Full-text available
In Galicia, NW Spain, a stranding network run by the non-governmental organisation CEMMA since 1990. The common dolphin (Delphinus delphis) is the most frequently stranded cetacean and a total of more than 2600 common dolphins has been recorded on the 25 years that the stranding network has been operational. Most marine debris (composed mainly of p...
Conference Paper
Full-text available
Existe muy poca información sobre la dieta del delfín listado (Stenella coeruleoalba) en aguas del sur de España. En este estudio se analizaron los estómagos de 61 delfines varados en Andalucía en los últimos ocho años (2007-2014). Diez estómagos estaban vacios y de los 51 individuos restantes, 35 vararon en la costa del Mar de Alborán y 11 en el G...
Conference Paper
Full-text available
El objetivo de las Estrategias Marinas es permitir el uso sostenible del medio marino mediante la gestión de las actividades y presiones humanas siguiendo un enfoque ecosistémico. La evaluación del estado de conservación de las especies marinas y su monitorización para determinar si alcanza el Buen Estado Ambiental (BEA) son sus pilares básicos. Pa...
Conference Paper
Full-text available
In relation to species, descriptor 1 (biodiversity) of the MSFD refers to three criteria: abundance, distribution and population condition. For marine mammals, indicator development has focused on the former two criteria, along with measuring bycatch mortality, based on large-scale surveys and on-board observers on fishing vessels. Strandings monit...
Article
Full-text available
There is an increasing demand for highly skilled workers in all advanced industrialised economies. Although most jobs require occupation-specific skills to carry them out, it is widely recognised that generic skills are ever more needed by job seekers, to increase job opportunities and maintain employability; this applies to all sectors of the econ...
Article
Full-text available
The stomach contents of 12 bottlenose dolphins were examined. Ten of the 11 samples originated from dolphins that stranded on the west coast of Ireland between 1999 and 2011, while the remaining dolphin was bycaught. Ten of the stomachs contained food remains, mainly fish bones and otoliths; two stomachs were empty. A total of 37 prey taxa were ide...
Article
The Marine Strategy Framework Directive has become the key instrument for marine conservation in European seas. We review its implementation, focusing on cetacean biodiversity, using the examples of Spain and the Regional Seas Convention, OSPAR. The MSFD has been widely criticised for legal vagueness, lack of coordination, uncertainty about funding...
Conference Paper
Full-text available
Common dolphins (Delphinus delphis) are one of the most abundant species of small cetacean in Northeast Atlantic Ocean and the most abundant in Atlantic shelf waters of the Iberian Peninsula. However, the abundance, distribution and population trends in the recent years of this species are poorly known, but such information is needed to develop pop...
Technical Report
Full-text available
Marine mammals have been included in whole ecosystem models (e.g. EwE) and in minimum realistic models (e.g. GADGET), among others, in studies principally fo-cused on trophic relationships, resource competition between fisheries and marine mammals, and consequences for fish stocks. There is the potential to add fishery by-catch mortality of marine...
Article
Growth increments in the lapilli otoliths of the black anglerfish (Lophius budegassa) were used to investigate its early life history. Assuming that the primary increments are deposited daily, age and hatch dates were determined by counting these increments in the lapilli of 33 juvenile fish collected during autumn bottom trawl surveys in the Bay o...
Conference Paper
Full-text available
The short-beaked common dolphin (Delphinus delphis) is the most abundant small cetacean in the north eastern Atlantic and in some regions of its range, bycatch mortality is considered to be unsustainable. To help inform conservation measures and allow the quantification of the impact of bycatch, population models are needed to explore how the popul...