Modelling the mid-late Holocene evolution of the Huelva Estuary and its human colonization, South-Western Spain

The major changes that occurred in the southwestern estuaries of the Spanish Atlantic coast during the last 6500 yr BP were simultaneous to human settlement and therefore the understanding of their coastal evolution will help interpreting human patterns in these areas. The study of the morpho-sedimentary features of new outcrops appearing in the middle sector of Saltés Island (Huelva Estuary, Spain) has been used to develop a model to understand the complex evolution of sand barriers than can be applied to similar inlets along the Atlantic Iberian coast. The first human settlements (6000–4000 yr BP) in the early Huelva Estuary (Tinto and Odiel rivers) were located in the ancient coastal banks or in the nearby hills. From 4000 yr BP onwards, the estuarine sediments started to emerge as sand barriers and chenier plains, prograding towards the mouth. As the littoral strands stabilized morphologically, they were colonized by human settlements in successive periods, the oldest inland (Almendral) and more recent outward (Cascajera). The study of the upper sedimentary layers of La Cascajera barrier display a tempestitic sequence of landward progradational washover-fans. The calibrated and modelled AMS dates in marine shells provide a storminess time range between the second half of first century BCE and the entire first century CE. Sedimentary records are useful to evaluate environmental changes, either from natural or anthropogenic causes, such as global and climate change. The interrelationship between the archaeological findings (mainly salting fish factories and old ports) and the morpho sedimentary evolution at the mouth of the Tinto and Odiel rivers allows us to highlight not only the Huelva Estuary's dynamics evolution, but also the possible regional patterns of human habitation from the beginning of the present sea-level highstand (middle Holocene).Ministerio de Economía y Competitividad CGL2010-15810/BTEEuropean Union (UE) EU Excellence Project of the Andalusia Board SEJ-477

El contraste micropaleontológico de la Historia: el Lacus Ligustinus romano

Durante el periodo romano (siglo III a.C.-siglo V d.C.), las zonas próximas a la actual desembocadura del río Guadalquivir estaban ocupadas por una laguna interior con conexión marina, a partir de la interpretación paleoambiental de las asociaciones de foraminíferos bentónicos obtenidos en un sondeo situado en el Parque Nacional de Doñana. Sus zonas internas estaban ocupadas por llanuras mareales arcillosas, que sufrieron los efectos de una tormenta hacia finales del siglo I d.C. La comparación con los ostrácodos del mismo sondeo confirma esta recons­trucción y los datos paleogeográficos aportados por diversos cronistas, si bien estos microcrustáceos detectan de manera más precisa los cambios paleoambientales en estos medios litorales.Junta de Andalucía-RNM-238, RNM-293 y RNM-349Plan Propio de Investigación de la Universidad de Huelva-UHU-126029

Imprints of historical pollution and the 218-60 BCE tsunamigenic period in southwestern Spain

The Doñana National Park is a Biosphere Reserve located within the estuary of the Guadalquivir River (SW Spain). It is mainly composed of extensive fluvio-tidal marshes partially protected by an elongated sandy spit. Three phases have been distinguished in the late Holocene evolution of this spit based on textural, geochemical, palaeontological and, chronological data recorded in a long core (31 m). Phase 1 (890 BCE-218 BCE) is characterized by the alternation of lagoonal silty sediments and slightly polluted marsh deposits, the latter with contamination from thousand-year-old mining. Phase 2 (218 BCE-90 CE) is characterized by several historical tsunamis, which caused the erosion of previous dune systems and the deposit of these sandy sediments on the adjacent bottom of the lagoon. Phase 3 (90 CE-Present) includes a regressive sequence (lagoonal bottommarsh-dune system), with the pollution of lagoonal sediments due to Roman mining activities.El Parque Nacional de Doñana es una Reserva de la Biosfera localizada dentro del estuario del río Guadalquivir (S.O. de España). Esta Reserva está formada principalmente por marismas fluvio-mareales parcialmente protegidas por una flecha arenosa alargada. Se han diferenciado tres fases en la evolución holocena tardía de esta flecha, con base en el análisis multidisciplinar (textura, geoquímica, paleontologíca, cronología) de un testigo largo (31 m). La fase 1 (890 BCE-218 BCE) se caracteriza por la alternancia de sedimentos lagunares limosos y depósitos de marisma levemente contaminados por metales pesados debido a una actividad minera milenaria. La fase 2 (218 BCE-90 CE) se distingue por la acción de varios tsunamis históricos, que causaron la erosión de sistemas dunares previos, así como el depósito de estos sedimentos arenosos sobre el fondo arcilloso de la laguna adyacente. La fase 3 (90 CE-actual) incluye una secuencia regresiva (laguna-marisma-sistema dunar) con una nueva contaminación de los sedimentos lagunares debido a las actividades mineras romanas.Dirección General de Investigación Científica y Técnica de España (DGYCIT)-CTM2006-06722/MAR y CGL2006-01412Plan Nacional de I+D+i de España-DEATLANTIR II-HAR2017-89154-

Palaeoenviromental evolution of a Late Holocene peat bog in the southwestern sector of the Doñana National Park (SW Spain)

El análisis multidisciplinar de un perfil descubierto por las tormentas invernales en el litoral del Parque Nacional de Doñana ha permitido reconstruir la evolución de su sector occidental durante el Holoceno superior. Se han definido 3 fases que reflejan el paso desde una marisma de aguas salobres (FA-1) a una laguna de aguas dulces transformada en turbera (FA-2), para finalizar con el depósito de cordones dunares (FA-3).The multidisciplinary analysis of a profile discovered by the winter storms on the coast of the Doñana National Park has allowed us to reconstruct the evolution of its western sector during the Late Holocene. Three phases have been defined, which reflect the transition from a brackish water marsh (FA-1) to a freshwater lagoon transformed into peat bog (FA-2), to end with the deposit of dune systems (FA-3

Holocene palaeoenvironmental evolution of Saltés Island, Tinto and Odiel estuary, SW Spain, during the Roman period, 1st century BC–5th century AD

A multidisciplinary analysis of Holocene sediments from Saltés Island (Tinto-Odiel estuary, SW Spain) has allowed to differentiate eigth sedimentary facies, according to their textural characteristics, internal structure, paleontology and archaeological content. Its interpretation and the chronological datings carried out reconstruct a transition from a sandy tidal plain to a fnal occupation by a Roman salting (cetaria) between the 1st century BC to 5th century A. This evolution includes the deposit of washover fans derived from high-energy events between the 1st century BC to 3th century AD. The integration of these new data with others from previous research has allowed partially complete the palaeoenviromental reconstruction of the marine domain of the Tinto-Odiel estuary.El análisis multidisciplinar de sedimentos holocenos procedentes de la isla Saltés, situada en el estuario de los ríos Tinto y Odiel (SO de España), ha permitido diferenciar ocho facies sedimentarias, de acuerdo a sus características texturales, estructura interna, contenido paleontológico y restos arqueológicos presentes. Su interpretación y las dataciones cronológicas efectuadas han permitido reconstruir una transición desde una llanura mareal arenosa a la ocupación fnal de la zona por una factoría romana de salazones (cetaria) entre los siglos I BC y V AD. Esta evolución incluye el depósito de washover fans derivados de la acción de eventos de alta energía entre los siglos I BC y III AD. La integración de estos nuevos datos con otros procedentes de investigaciones previas ha permitido completar parcialmente la reconstrucción paleoambiental del dominio marino del estuario de los ríos Tinto y Odiel.Junta de Andalucía (España) project ´Roman cities of the Baetica. CORPVS VRBIVM BAETICARVM (I) (CUB)´Junta de Andalucía (España) HUM-132Junta de Andalucía (España) RNM-23

The Origin and Evolution of Late Holocene Tsunamiites in the Doñana National Park (SW Spain): Trace Elements as Geochemical Proxies

The elemental content—mainly trace elements—of samples from two boreholes (PLN, CM) with evidence of tsunamiites, located in the Doñana National Park (SW Spain), were studied. The geochemical variations of the REE, LILE, HFSE, and other elements (Al, Ti, S, Na, Br, Sc, Co, Cr) were interpreted according to the mineralogy present in the samples. The results obtained show the geochemical complexity of the estuarine paleoenvironments, in this case with the existence of three Holocene-age tsunamigenic deposits (around 4.25, 3.56 and 2.2–2 kyr BP). The statistical analysis of the samples’ geochemistry, by means of linear correlation and factor analysis, made it possible to differentiate two associations. The first is representative of an inherited mineralogy (REE-Y-Rb-Sr-Cs-Th-U-Hf-Al-Ti-Co-Cr-Sc); the second includes elements (Br-Na) linked to mineral formation under evaporite conditions (halite). The trace element geochemistry of sediments thus becomes an excellent tool to identify tsunamiites in the studied zone, especially those elements that are clear proxies for marine incursions (Na, Br, Sr) and high energy events (Hf, Ti). The parent area of the provenance of the materials is mainly of felsic composition

Facies analysis, foraminiferal record and chronostratigraphy of Holocene sequences from Saltés Island (Tinto-Odiel estuary, SW Spain): The origin of high-energy deposits

A multidisciplinary analysis of Holocene sediments from La Cascajera (Tinto-Odiel estuary, SW Spain) has al lowed to differentiate five sedimentary facies (sandy tidal flat, clayey tidal flat, washover fan, salt marsh, edaphic horizon), according to their granulometric characteristics, internal structure, mineralogical composi tion, clay mineral assemblage and paleontological record. These data, coupled to 14C AMS dating, suggest an evolution from a sandy tidal plain to a chenier before 2100 cal yr BP. This initial chenier was partially eroded later by regional storms between 2100 cal yr BP and 1900 cal yr BP, leading to the deposition of two washover fans. These facies have been eroded in the last centuries by the action of an ebb-tide channelJunta de Andalucía CORPVS VRBIVM BAETICARVM (I) (CUB)Ministerio de Economía, Industria y Competitividad DEATLANTIR II - HAR2017-89154-

Данные секвенирования транскриптома Armillaria borealis

организм Armillaria borealis (опёнок сибирский)Аннотированный транскриптом.Объект авторского права размещён на платформе IPUniversity по адресу https://ipuniversity.ru/object/IPC-RU.IPU.GN.2018-0JE0O4KG.5Sugar-phosphate isomerase, RpiB/LacA/LacB family. Работа выполнена в лаборатории лесной геномики СФУ