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Introduction
Publications
Publications (71)
Background: Syngnathid fishes (Actinopterygii, Syngnathidae) are flagship species strongly associated with seaweed
and seagrass habitats. Seahorses and pipefishes are highly vulnerable to anthropogenic and environmental
disturbances, but most species are currently Data Deficient according to the IUCN (2019), requiring more biological
and ecological...
The productivity of intertidal shellfish banks is affected by a wide variety of environmental parameters. In this study, a battery of multivariate analyses including generalized linear mixed models, hierarchical cluster analysis and principal component analysis were performed to define the spatial organization of sandbanks and to identify the varia...
Evaluation of biogeochemical processes in Anthropocene deep-sea sediments require accurate dating techniques. Here we show the results of an approach using high resolution low level background gamma spectrometry with two simultaneous hyper-pure germanium (HPGe) detectors. The quantitative role of the deepest zones (>3000 m depth) of the Irminger Ba...
Ten sites (2- 20 m depth), along the West coast of Cíes Archipelago (Atlantic
Islands National Park, NW Spain), were surveyed twice in spring and summer 2016 to study distribution, habitat, genetic diversity and stable isotope signatures of Syngnathids
(seahorses and pipefishes), a Family of vulnerable fish species. Most bottoms were
characterized...
Intertidal shellfish banks in estuarine areas are influenced by a wide variety of environmental conditions, including the physical and chemical characteristic of the water that floods the grounds. In this study we carry out a cross-comparison of the hydrographic characteristics and nutrient fertilization patterns of the waters that laps the shellfi...
The Galicia Interior Basin (GIB; NW Iberian Peninsula) is located near a critical transition between the subtropical (temperate) and subpolar (cold) gyres of the North Atlantic. It therefore witnesses oceanographic changes driven by global climatic events. This study reports on the recent (latest Pleistocene) sedimentary, palaeoceanographic and pal...
This work presents a detailed study of CONTOURIBER and Integrated Ocean Drilling Program 339 sediment data targeting sand-rich contourites in the Eastern Gulf of Cadiz. All of the collected sediments are interpreted as contourites (deposited or reworked by bottom currents) on the basis of oceanographic setting, seismic and morphometric features and...
The 5th Assessment Report of the Intergovernmental Panel on Climatic Change (AR5, IPCC, 2014) suggests that the increase of greenhouse gas emissions from anthropic sources, in the last decades (particularly since 1970), is responsible for the Climate Change. Climate Change has been producing adverse effects on the oceans and coastal areas, such as...
In this study we combine textural and compositional information to characterize the intertidal sediments from three relevant shellfishing banks located in the Rías Altas (Vilarrube, Lombo das Navallas) and Rías Baixas (Playa America) of Galicia (NW Spain). The purpose of this study is to explore the relevance of the sediment characteristics as a ke...
Proyecto basado en el análisis y contraste de ecosistemas diversos marcados por las diferentes condiciones biogeografías y ambientales como son los ecosistemas costeros y marinos Atlánticos y Mediterráneos a través de una metodología enmarcada en el aprendizaje activo.
Acidification of the oceans is one of the consequences of ongoing increasing atmospheric CO2 concentrations. The effects on organisms that build their shells of calcium carbonate are not sufficiently studied and might be detrimental. Simulating ocean acidification scenarios in the laboratory is a reasonable way to study their response to decreased...
We report, for first time, the occurrence of cold-water coral mounds and large number of living Lophelia reefs along the Galicia Bank (Atlantic NW Iberian margin). Detection and mapping of living coral reefs and mounds have been carried out by means of multibeam bathymetry, backscatter images, ultra-high resolution and high-resolution multichannel...
Geological guide of the Atlantic Islands of Galicia National Park (Spain), in which the materials as well as the geological and geomorphological processes in the territory of the archipelagos covered by the National Park are described. The most representative geological itineraries of each island are also included.
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An extensive terrace comprising sandy sheeted drifts characterises the proximal sector (close to the Straits of Gibraltar) of the Contourite Depositional System (CDS) of the Gulf of Cadiz and the western continental margin of Portugal. A novel morphosedimentary study over this terrace has been executed based on new multibeam echosounder data, seism...
Compositional, mineralogical and grain size data from 13 superficial samples recovered
between 490 and 1144 m water depth in three Contourite Depositional Systems (CDSs): the Gulf of Cadiz, Ortegal Spur and El Cachucho are presented. First surficial centimeter was analysed in different contourite features: depositional (drifts), erosive (moats) and...
Se presentan los resultados multidisciplinares que combinan aspectos de hidrografía y dinámica de las aguas continentales y marinas que se mezclan en las rias, de la composición química de la columna de agua, de la granulometría y composición actual y pasada de los sedimentos de los bancos marisqueros, de la toxicidad de las aguas y sedimentos y de...
Biological and habitat characterization of the non-indigenous invasive species Xenostrobus securis was undertaken in the Ria de Vigo. This study included genetic identification of mussel samples collected from introduced
and endemic areas, and the assessment of mussel size, population abundance, geographic distribution, pathological condition,
and...
This contribution aims to illustrate the Ortegal Cape Contourite Depositional System (OCCDS), a new example of contourites located on the northern Galicia margin generated by the Mediterranean Outflow Water (MOW) influence. This work is based on several datasets collected during two multidisciplinary cruises, including: single echosounder and swath...
The mesotidal (2–4 m) Rías Bajas of Galicia are fault-bounded depressions drowned by the sea during the Flandrian transgression to form elongate coastal embayments, which are being infilled by land-derived siliciclastic detritus and locally produced biogenic carbonate. Small fluvio-tidal bay-head deltas have developed at the landward extremities wh...
Ladeira Beach is a north-south, 1.3 km long and 88-120 m wide dune-beach complex, which protects a 0.88 km 2 intertidal area, which at high tide forms a lagoon. The beach is a low-tide terrace reflective beach. Three rivers enter the complex, merging and connecting the open sea by a narrow inlet at the north. An ebb tidal delta is developed at the...
Beach management and consequent beach understanding become necessary in coastal areas due to the high pressure that they are nowadays standing. Management plan objective is the protection of particular areas, coastal areas in this case. The three islands of the Cies Archipelago, where we have developed this work, have been recently included in the...
The Tagus Prodelta (W Portugal) and the Muros Ría (NW Spain) are areas of high deposition rates registering high-resolution palaeoclimatic records for western Iberia. We compare the climatic conditions of the two areas over the last two millennia based on proxies of temperature (sea surface temperatures and oxygen isotopes), continental input (grai...
The internal structure of a modern baymouth barrier is analyzed in detail, including its historical evolution and the factors controlling it. Historical evolution was reconstructed using available aerial photographs from 1956 to 2003. Detailed geophysical data were acquired using ground-penetrating radar (GPR) and analyzed along with airphotos to r...
Sand barriers are dynamic constructions with a natural environmental trend that can be altered by human activities. Along this paper we present a case of study where sand mining activities have brought about the change of inlet position. The work is focused on the evolution and influence over sediment budget of the tidal inlet developed at Rodas Sa...
PÉREZ-ARLUCEA, M.; CARTER, A.; CLEMENTE, F.; GONZÁLEZ, D.; NOMBELA, M. 2005. Multi-approach long and short-term denudation rate calculations for the Galician coast (Ría de Vigo, Spain): AFTD, DEM analysis, river loads and sediment budgets. Journal of Coastal Research, SI 49 (Proceedings of the 2 nd Meeting in Marine Sciences, 9 – 14. Valencia -Spai...
The morphology of low-energy beaches is inherited from high-energy events showing a non equilibrium state with the prevailing conditions. An example of a sheltered, low-energy beach (Rodas Beach, NW-Iberian Peninsula) is examined in this paper. The evolution of six beach profiles was analysed during three years in order to investigate the response...
The aim of this study is to provide a budget study with calculated erosion rates. Three methods have been used to calculate sediment yield and denudation rates in the Ria de Vigo: (1) measurements of sediment loads, (2) measurements of sediment accumulation rates at the coast, (3) theoretical calculations of potential denudation. Sediment loads and...
The aim of this study is to provide a budget study with calculated erosion rates. Three methods have been used to calculate sediment yield and denudation rates in the Ria de Vigo: (1) measurements of sediment loads, (2) measurements of sediment accumulation rates at the coast, (3) theoretical calculations of potential denudation. Sediment loads and...
Benthic foraminifera assemblages from the outer sector of the ría de Muros have been analyzed in order to obtain a detailed reconstruction of Holocene environmental evolution. The studied core (EUGC-3B: 42' 45.10'N; 9' 02.23'W, at 38 m.b.s.l. and 410 cm length) consists of muddy sand from the core bottom (8200 cal yr BP) to 200 cm (2700 cal yr BP)...
Carbon and oxygen stable isotopes and ICP-OES elemental ratio concentrations (Mg/Ca, Sr/Ca, Ba/Ca) from core EUGC-3B (42 45.10'N; 9 02.23'W, at 38 m.b.s.l. and 410 cm length) were measured over monospecific benthic foraminiferal samples (Nonion fabum) ranging over the last 4500 yr BP. From the oldest analysed sample (289 cm) to the core top, stable...
Coastal deposits are not prominent in the Ria de Vigo, high cliffs dominate the coast line, but several well-preserved sedimentary areas are observed. Beach and aeolian sand dunes are preserved in protected bays along margins between low cliffs, as Playa America, Patos and Samil. Several rivers form prominent estuaries such as the Verdugo-Oitaven,...
The Ensenada de San Simón is the inner part of the Rı́a de Vigo, one of the major mesotidal rı́as of the Galician coast, NW Spain. The geochemistry of its surface sediments, and the river sediments which drain into it from a granitic and metamorphic hinterland, are described. Multivariate statistical analysis of the sediment compositions (using rid...
ABSTRACT
Sediment load concentrations have been measured in the Lagares and Miñor
rivers at the south slope of Ría de Vigo during two periods: 97/98 and 00/01. Suspended
and dissolved loads were about 2 to 3 times higher in the second period due to peak
discharges accompanying an extremely anomalous pluviometric year.
Minimum and maximum erosion ra...
The indiscriminate use of cluster analysis to distinguish contaminated and non-contaminated sediments has led us to make a comparative evaluation of different cluster analysis procedures as applied to heavy metal concentrations in subtidal sediments from the Ría de Vigo, NW Spain. The use of different cluster algorithms and other transformations fr...
Ria de Vigo is a funnel-shaped, fault-bounded coastal embayment in Galicia, NW Spain. There are a number of important centres of population and industrial activity along its margins, which serve as sources of pollution. Sixty-six subtidal sediment samples have been collected in the Ria. The samples have been subjected to a total digestion technique...
RESUMEN En este trabajo se presenta la comparación de los sedimentos superficiales de la plataforma proximal de tres complejos playeros situados en las inmedia-ciones de la embocadura de la Ría de Muros y Noia. En cada uno de ellos, se han identificado las distintas poblaciones sedimentarias en función de los aná-lisis granulométricos realizados. L...
Five rivers that flow into the Ria de Vigo were sampled during a period of 2 years from January 1995 to February 1997. Their catchment area approximates 45.3% of the total drainage into the Ria de Vigo. Flow rates and suspended matter (sm) data were recorded to calculate the volume of runoff. The mineralogy was studied using XRD. Three of the five...
En este trabajo se presenta la comparación de los sedimentos superficiales de la plataforma proximal de tres complejos playeros situados en las inmedia-ciones de la embocadura de la Ría de Muros y Noia. En cada uno de ellos, se han identificado las distintas poblaciones sedimentarias en función de los aná-lisis granulométricos realizados. La aplica...
La valoración de la contaminación de un área dada depende en gran medida de la determinación precisa de los denominados valores de fondo o naturales. Numerosos autores han aportado valores de fondo para las Rías basándose en distintos análisis estadísticos y de muestras superficiales. En este trabajo se re-visan y proponen nuevos valores de fondo b...
The relative space distributions of single mineral constituents in mixed terrigenous-carbonated sediments of the Bayona Bay have been analysed. In order to determine the existence of different mixing mechanisms, a study comparing the general sedimentary trends resulting from the average patterns and the single mineral behaviour, reflected in the si...
The Corrubedo beach-lagoon complex is situated in an embayment on the northwestern coast of Spain. The 4.1 m tidal range and southwesterly winds are the main agents of sediment transportation. The sediments are hybrid arenites (siliciclastic + bioclastic), with carbonate percentages ranging from 27.36 to 54.10%; silt, clay and organic matter occur...
Four characteristic sequences have been distinguished: permanently active channels, channels active only during extreme spring tides, abandoned channels and external tidal inlets. They have a complex internal organization without clear upwards fining or coarsening trends in grain-size. Two sedimentary features are particularly characteristic of the...
Sampling stations were chosen to reflect the different exposures and energy: high energy (open zones) and low energy (inner zones). Morphology of 15 beaches was determined by topographic profiling, with an average of 3 samples between high-water mark and low-water mark in each profile. The carbonate content range is 20-40% in open zones, whereas th...
[ES] El complejo costero de Corrubedo (Provincia de La Coruña) es un sistema playa-barrera-lagoon, en avanzado estado de evolución. En el presente trabajo se distinguen 8 subambientes de sedimentación y se describen los procesos actuantes y los sedimentos característicos de cada uno de ellos. Se distinguen también las etapas de evolución en época r...
The indiscriminate use of cluster analysis to distinguish contaminated and non-contaminated sediments has led us to make a comparative evaluation of different cluster analysis procedures as applied to heavy metal concentrations in subtidal sediments from the Ría de Vigo, NW Spain. The use of different cluster algorithms and other transformations fr...
