21 research outputs found

    The Eurasian Modern Pollen Database (EMPD), version 2

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    The Eurasian (née European) Modern Pollen Database (EMPD) was established in 2013 to provide a public database of high-quality modern pollen surface samples to help support studies of past climate, land cover, and land use using fossil pollen. The EMPD is part of, and complementary to, the European Pollen Database (EPD) which contains data on fossil pollen found in Late Quaternary sedimentary archives throughout the Eurasian region. The EPD is in turn part of the rapidly growing Neotoma database, which is now the primary home for global palaeoecological data. This paper describes version 2 of the EMPD in which the number of samples held in the database has been increased by 60 % from 4826 to 8134. Much of the improvement in data coverage has come from northern Asia, and the database has consequently been renamed the Eurasian Modern Pollen Database to reflect this geographical enlargement. The EMPD can be viewed online using a dedicated map-based viewer at https://empd2.github.io and downloaded in a variety of file formats at https://doi.pangaea.de/10.1594/PANGAEA.909130 (Chevalier et al., 2019)Swiss National Science Foundation | Ref. 200021_16959

    The Eurasian Modern Pollen Database (EMPD), version 2

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    The Eurasian (nee European) Modern Pollen Database (EMPD) was established in 2013 to provide a public database of high-quality modern pollen surface samples to help support studies of past climate, land cover, and land use using fossil pollen. The EMPD is part of, and complementary to, the European Pollen Database (EPD) which contains data on fossil pollen found in Late Quaternary sedimentary archives throughout the Eurasian region. The EPD is in turn part of the rapidly growing Neotoma database, which is now the primary home for global palaeoecological data. This paper describes version 2 of the EMPD in which the number of samples held in the database has been increased by 60% from 4826 to 8134. Much of the improvement in data coverage has come from northern Asia, and the database has consequently been renamed the Eurasian Modern Pollen Database to reflect this geographical enlargement. The EMPD can be viewed online using a dedicated map-based viewer at https://empd2.github.io and downloaded in a variety of file formats at https://doi.pangaea.de/10.1594/PANGAEA.909130 (Chevalier et al., 2019).Peer reviewe

    69. Targuist mire (Central Rif, Morocco)

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    This work was supported by Consejería de Economía, Innovación, Ciencia y Empleo, Junta de Andalucía: [Grant Number A-RNM-688-UGR20]; Consejería de Transformación Económica, Industria, Conocimiento y Universidades: [Grant Number P18-RT-4963]; Ministerio de Ciencia e Innovación: [Grant Number RTI2018-101714-B-I00]Peer reviewe

    Characterisation of the airborne pollen spectrum in Guadalajara (central Spain) and estimation of the potential allergy risk

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    Aerobiological research into airborne pollen diversity and seasonal variations in pollen counts has become increasingly important over recent decades due to the growing incidence of asthma, rhinitis and other pollen-related allergic conditions. Airborne pollen in Guadalajara (Castilla-La Mancha, Spain) was studied over a 6-year period (2008–2013) using a Hirst-type volumetric spore trap. The highest pollen concentrations were recorded from February to June, coinciding with the pollen season of the pollen types that most contribute to the local airborne pollen spectrum: Cupressaceae 32.2 %), Quercus (15.1 %), Platanus (13.2 %), Olea (8.3 %), Populus (7.8 %) and Poaceae (7.2 %). These are therefore critical months for allergy sufferers. The pollen calendar was typically Mediterranean and comprised 25 pollen types. Between January and March, Cupressaceae pollen concentrations exceeded allergy risk thresholds on 38 days. Other woody species such as Olea and Platanus have a shorter pollen season, and airborne concentrations exceeded allergy risk thresholds on around 13 days in each case. Poaceae pollen concentrations attained allergy risk levels on 26 days between May and July. Other highly allergenic pollen types included Urticaceae and Chenopodiaceae-Amaranthaceae, though these are less abundant than other pollen types in Guadalajara and did not exceed risk thresholds on more than 3 and 5 days, respectively

    Conidios de 'alternaria', factor de riesgo de alegria en Castilla-La Mancha

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    In this work study the seasonal behaviour of the conidia of Alternaria, as well as the main locations in the Castilla-La Mancha region where the levels of these conidia in the air may pose a risk of allergy for people who are sensitised to them. The study was conducted in 5 sampling stations belonging to the Castilla-La Mancha Aerobiological Network (Red Aerocam): Albacete, Ciudad Real, Cuenca, Guadalajara and Toledo, in 2008. The pollen traps and the sampling methodology used follow the guidelines of the Spanish Aerobiology Network (REA). Alternaria conidia are detected in the atmosphere of Castilla-La Mancha all year round, although the highest concentrations are obtained in May, June and July. The greatest annual concentrations are detected in the cities of Ciudad Real, Toledo y Guadalajara with 5.624 conidia, 4.527 conidia and 4.173 conidia respectively, followed by Albacete and Cuenca. Some locations sampled showed high maximum daily values on a considerable number of days: examples include the levels recorded in Ciudad Real on 20 March (722 conidia/m3), Toledo on 18 June (324 conidia/m3), and Guadalajara on 26 June (220 conidia/m3).En este trabajo se estudia el comportamiento estacional de los conidios de Alternaria en la atmósfera de Castilla-La Mancha, cuyo inte- rés se basa en que los niveles en el aire de estos conidios suponen un riesgo de alergia para las personas sensibilizadas a los mismos. El estudio se ha llevado a cabo en cinco estaciones de muestreo pertenecientes a la Red de Aerobiología de Castilla-La Mancha (Red Aerocam): Albacete, Ciudad Real, Cuenca, Guadalajara y Toledo, durante el año 2008. Los captadores utilizados y la metodología de muestreo siguen las directrices de la Red Española de Aerobiología (REA). Los conidios de Alternaria se detectan en la atmósfera de Castilla-La Mancha durante todo el año, aunque los meses de mayores concentraciones se obtienen en mayo, junio y julio. Ciudad Real, Toledo y Guadalajara son las ciudades en las que se detecta una mayor concentración anual, con 5.624 conidios, 4.527 conidios y 4.173 conidios, respectivamente, seguidas de Albacete y de Cuenca. En algunas de las localidades muestreadas, los valores máximos diarios han sido elevados en un importante número de días, destacamos los registrados en Ciudad Real el 20 de marzo (722 conidios/m3), en Toledo el 18 de junio (324 conidios/m3) y en Guadalajara el 26 de junio (220 conidios/m3)

    Conidia of Alternaria, allergy risk factor in Castilla-La Mancha

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    En este trabajo se estudia el comportamiento estacional de los conidios de Alternaria en la atmósfera de Castilla-La Mancha, cuyo inte- rés se basa en que los niveles en el aire de estos conidios suponen un riesgo de alergia para las personas sensibilizadas a los mismos. El estudio se ha llevado a cabo en cinco estaciones de muestreo pertenecientes a la Red de Aerobiología de Castilla-La Mancha (Red Aerocam): Albacete, Ciudad Real, Cuenca, Guadalajara y Toledo, durante el año 2008. Los captadores utilizados y la metodología de muestreo siguen las directrices de la Red Española de Aerobiología (REA). Los conidios de Alternaria se detectan en la atmósfera de Castilla-La Mancha durante todo el año, aunque los meses de mayores concentraciones se obtienen en mayo, junio y julio. Ciudad Real, Toledo y Guadalajara son las ciudades en las que se detecta una mayor concentración anual, con 5.624 conidios, 4.527 conidios y 4.173 conidios, respectivamente, seguidas de Albacete y de Cuenca. En algunas de las localidades muestreadas, los valores máximos diarios han sido elevados en un importante número de días, destacamos los registrados en Ciudad Real el 20 de marzo (722 conidios/m3), en Toledo el 18 de junio (324 conidios/m3) y en Guadalajara el 26 de junio (220 conidios/m3).In this work study the seasonal behaviour of the conidia of Alternaria, as well as the main locations in the Castilla-La Mancha region where the levels of these conidia in the air may pose a risk of allergy for people who are sensitised to them. The study was conducted in 5 sampling stations belonging to the Castilla-La Mancha Aerobiological Network (Red Aerocam): Albacete, Ciudad Real, Cuenca, Guadalajara and Toledo, in 2008. The pollen traps and the sampling methodology used follow the guidelines of the Spanish Aerobiology Network (REA). Alternaria conidia are detected in the atmosphere of Castilla-La Mancha all year round, although the highest concentrations are obtained in May, June and July. The greatest annual concentrations are detected in the cities of Ciudad Real, Toledo y Guadalajara with 5.624 conidia, 4.527 conidia and 4.173 conidia respectively, followed by Albacete and Cuenca. Some locations sampled showed high maximum daily values on a considerable number of days: examples include the levels recorded in Ciudad Real on 20 March (722 conidia/m3), Toledo on 18 June (324 conidia/m3), and Guadalajara on 26 June (220 conidia/m3)

    Paleoambiente y sociedad en la Edad del Bronce de La Mancha: la Motilla del Azuer

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    A partir del estudio paleopalinológico se realiza la reconstrucción paleoambiental y paleoclimática del entorno de la Motilla del Azuer (Daimiel, Ciudad Real) durante la Edad del Bronce. A lo largo de la secuencia del yacimiento, que se sitúa entre el 2200 y el 1350 cal BC y se divide en cuatro grandes fases, se documenta el evento 4.2 ka cal BP con una serie de os- cilaciones climáticas centradas en un período excepcionalmente árido (fase II, entre el 2000 y el 1800 cal BC). Se plantean nuevos argumentos para demostrar la importancia del clima árido y el especial ambiente hidrológico de La Mancha como factores que ayudan a explicar la construcción de las “motillas”, asentamientos organizados en torno a pozos que explotan el freático y cuyas fortif icaciones circulares ejercieron un claro control sobre la producción subsistencial y el agua en el territorio manchego.Peer reviewe

    Paleoenvironment and Society in La Mancha Bronze Age: the Motilla Azuer

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    RESUMEN: A partir del estudio paleopalinológico se realiza la reconstrucción paleoambiental y paleocli-mática del entorno de la Motilla del Azuer (Daimiel, Ciudad Real) durante la Edad del Bronce. A lo largo de la secuencia del yacimiento, que se sitúa entre el 2200 y el 1350 cal BC y se divide en cuatro grandes fases, se documenta el evento 4.2 ka cal BP con una serie de os-cilaciones climáticas centradas en un período excepcionalmente árido (fase II, entre el 2000 y el 1800 cal BC). Se plantean nuevos argumentos para demostrar la importancia del clima árido y el especial ambiente hidrológico de La Mancha como factores que ayudan a explicar la construcción de las “motillas”, asentamientos organizados en torno a pozos que explotan el freático y cuyas fortif icaciones circulares ejercieron un claro control sobre la producción subsistencial y el agua en el territorio manchegoABSTRACT: A paleoenvironmental and paleoclimatic reconstruction of the Motilla del Azuer’s (Daimiel, Ciudad Real) area during the Bronze Age is proposed from a paleo-palynological study. Throughout the site sequence, which ranges between 2200 and 1350 cal BC and it is divided into four main phases, the 4.2 ka cal BP event is recorded. Several climatic oscillations in an exceptionally arid period (phase II between 2000 and 1800 cal BC) are documented in. New arguments are presented to show the importance of the arid climate and the special hydrological features of La Mancha as factors that partially explain the construction of the “motillas”, i.e. settlements structured around wells exploiting the water table and whose circular fortifications exercised a clear control on subsistence production and water management in La Mancha territory
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