Pollen

Buying and Maintaining Nail Lacquer for Laboratory Use: A Practical Guide for Palynologists

by Maria Caffrey

Co-authored with Sally P. Horn

Fire and vegetation change during the Early Pleistocene in southeastern Australia

by Kale Sniderman

Early Pleistocene vegetation change in upland south-eastern Australia

by Kale Sniderman

A late-Holocene palaeoecological record from Ambra Crater in the highlands of Papua New Guinea and implications for agricultural history

by Kale Sniderman

Contiguous multi‐proxy analyses (X‐radiography, diatom, pollen, and microcharcoal) of Holocene archaeological features at Kuk Swamp, Upper Wahgi Valley, Papua …

by Kale Sniderman

Denk, T., Grímsson, F., Zetter, R. Símonarson, L. A. 2011. Late Cainozoic Floras of Iceland. 15 Million Years of Vegetation and Climate History in the Northern North Atlantic. Topics in Geobiology 35, 870 pp. Springer, Dordrecht. ISBN 978-94-007-0371-1

by Thomas Denk

Denk, T., Grimm, G. W. 2009a. Significance of pollen characteristics for infrageneric classification and phylogeny in Quercus (Fagaceae). International Journal of Plant Sciences 170: 926–940.

by Thomas Denk

Denk, T., Tekleva, M. V. 2006. Comparative pollen morphology and ultrastructure of Platanus: Implications for phylogeny and evaluation of the fossil record. Grana 45: 195–221.

by Thomas Denk

Denk, T. 2003. Phylogeny of Fagus L. (Fagaceae) based on morphological data. Plant Systematics and Evolution 240: 55–81.

by Thomas Denk

Anthropisation du paysage végétal dans la vallée des Baux: Premiers résultats de prélèvements paléopolliniques effectués durant l'opération artère du midi

by Santiago Riera

Cambios en el paisaje del Valle de Ordino al inicio del Holoceno: evolución geomorfológica, paleovegetal e incendios de época Mesolítica (NW del Principado de Andora, Pirineos Orientales)

by Santiago Riera

S.Riera, V.Turú
Resúmenes AEQUA. Andorra. pp. 201-204

Estimaciones precoces de la producción de uva en la DO Valdepeñas mediante la aplicación del método aeropolínico

by Santiago Riera

Pardo, C.; Ciruelos, A.; Riera, S.; Gallego, B.
Departamento de Biología Vegetal II. Facultad de Farmacia. Universidad Complutense de Madrid.

El método aeropolínico de estimación de cosechas se basa en una idea relativamente sencilla: la concentración polínica... more El método aeropolínico de estimación de cosechas se basa en una idea relativamente sencilla: la concentración polínica atmosférica (CPA) durante el período de floración es una medida de la cantidad de polen producido por un cultivo. A su vez, esta cantidad de polen está fuertemente vinculada a la cantidad de flores y, por tanto, de fruto. Además, la CPA es también una medida de la evolución fenológica, del estado sanitario, de las condiciones climáticas preflorales, así como del vigor de la planta, incluso, en base a nuestra experiencia, puede reflejar cambios significativos en la estructura de los cultivos.

ESTIMACIÓN PRECOZ DEL VOLUMEN DE PRODUCCIÓN DE VINO EN ESPAÑA MEDIANTE LA APLICACIÓN DEL MÉTODO AEROPOLÍNICO AMPLIADO

by Santiago Riera

CIRUELOS ORTEGA, A.; RIERA MORA, S.; PARDO MARTÍN, C.
Departamento de Biología Vegetal II. Facultad de Farmacia. Universidad Complutense de Madrid. Plaza Ramón y Cajal, s/n. 28040, Madrid. España. E-mail: sriera@eucmax.sim.ucm.es; cpardo@eucmax.sim.ucm.es

During 1988, the EU brought into service a network of Aeropalynological Stations (EA), to look for early and reliable... more During 1988, the EU brought into service a network of Aeropalynological Stations (EA), to look for early and reliable forecasting of the grape and olive production at European level, through the Aeropalynological Method of Crop Forecasting (MAP). Now, after 10 years of use, it is possible to evaluate the application of the MAP to the Spanish vintages. The MAP only takes into consideration the CPA variable (Absolute Pollen Concentration) for the forecasting of grape production; additionally the forecast is done at the beginning of July and the prediction provides a 14% average deviation against the Real Production (PRR) for the total of the Spain, and 20% for the province of Ciudad Real.
The comparison between the Spanish and French forecasting shows that the estimates are less reliable in the first country, mainly due to the effect that the postfloral factors have on the PRR in Spain, and especially to the hydric availability during the summer months, which coincides with fruit development.
In this work, we propose a first approximation to build up an aeropolinological extended model of forecasting (MAAP) which, on top of the CPA, takes into consideration other climatic and fitosanitary variables. The MAAP has been tested on the province of Ciudad Real (Castilla - La Mancha).
The new MAAP model considers the following variables: CPA, P JJ (rainfall during June and July), LEVE and GRAVE for the postfloral fitoclimatic incidences. The forecasting, achieved during the first week of August, shows a 15% of average deviation against the Real Production in the province of Ciudad Real.

Mayor fiabilidad de las estimaciones aeropolínicas de producción de uva en regiones vitícolas secas. Aplicación a la provincia de Ciudad Real (La Mancha, España)

by Santiago Riera

C. Pardo-Martín; A. Ciruelos-Ortega; S. Riera-Mora; B. Gallego-Rodríguez
Viticultura/Enología Profesional
nº 114 • enero | febrero 2008

Great reliability of aeropalynological forecast of grape production in dry vineyards. Application in the province of... more Great reliability of aeropalynological forecast of grape production in dry vineyards. Application in the province of Ciudad Real (La Mancha–Spain).
Aeropalynological method applied to early crop forecast is based on the demonstrated relation between pollen grain and fruit amounts produced by vines. Current 17–year long pollen record available at the Valdepeñas Pollen Station (Ciudad Real, La Mancha) allows us to evaluate the reliability of pollen forecast method applied to Spanish vineyards, subjected to a water shortage.
The analysis of these data allowed us to design complex forecasting models that incorporate new variables, besides the atmospheric pollen concentration. These variables estimate the weight of post floral factors, mainly the soil water reserve,
and their impact on the grape production.
The application of new models to wine production in the province of Ciudad Real (La Mancha, Spain) allowed to forecast crops with deviations lower that 8%, 30 to 40 days before the vintage. In conclusion, these models contribute to increase the reliability of the aeropalynological forecast method, making it useful to the Spanish wine sector.
Key words: Airborne pollen concentration, Spain, Crop forecast, Pollen, Grape production, Soil water reserve, Valdepeñas, Vineyard.

Grill, S.; A.M. Borromei; G. Martínez; M. Gutiérrez, M.E. Cornou y D. Olivera. 2007. Palynofacial analysis in alkaline soils - Paso Otero 5 archaeological site - (Necochea district, Buenos Aires province, Argentina). Journal of South American Earth Sciences 24:34-47

by Gustavo Martínez

The combination of the palynofacial and sedimentological analyses constitutes a valuable method for paleoenvironmental... more The combination of the palynofacial and sedimentological analyses constitutes a valuable method for paleoenvironmental and paleoclimatic reconstructions, specially when fossil pollen information is scarce or absent. This methodology is used to study a late Pleistocene/Holocene sequence at Paso Otero 5 archaeological site, middle basin of the Quequén Grande river, Necochea district, Buenos Aires province, Argentina. Although the main factor responsible for the destruction of pollen grains is pH, the biochemical and chemical oxidation, and mechanical damage contribute to the deterioration of the material as well. The site sequence indicates that extremely arid climatic conditions without vegetation cover prevailed during the late Pleistocene (ca.12,000 14C yr BP). After this period the climate changed to semiarid conditions associated with disturbed environment due to strong eolian activity (Palynofacies 1 and 2; pre-10,400 14C yr BP). During the Pleistocene/Holocene transition (Palynofacies 3 and 4; ca. 10,400-9400 14C yr BP), loamy facies, associated with paleosoils, reflected stable conditions and temporary ponds (spring deposits). Similar conditions are registered towards the end of early Holocene (Palynofacies 5,6,7,8 and 9, ca. 6600 14C yr BP). Sandy and silty facies are associated with flood margin of streams or rivers for the  middle Holocene (Palynofacies 10, 11, 12, 13 and 14, ca. 6600-4200 14C yr BP). The top of the sequence (Palynofacies 15 and 16), represent alluvium sediments, and reflect locally humid conditions and modern vegetation with anthropic influence.

2008. Medina, M.; S. Grill y M.L. López. “Palinología, Subsistencia y Movilidad en el Prehispánico Tardío de las Sierras de Córdoba (Argentina)”. Comechingonia Virtual 3: 145-158. Revista Electrónica de Arqueología, http://www.comechingonia.com, Área de Arqueología y Etnohistoria, Centro de Estudios Históricos “Prof. Carlos S.A. Segreti”, Unidad Asociada al CONICET, Córdoba.

by Matías E. Medina

A 12,000-year Record of Vegetation and Climate Change from the Sierra de Los Cuchumatanes, Guatemala

by Maria Caffrey

Co-authored with Matthew Taylor and Donald Sullivan

Relatively few Holocene climate change studies in the Guatemala highlands have been completed. This study uses proxy... more Relatively few Holocene climate change studies in the Guatemala highlands have been completed. This study uses proxy records of climate change from Miqul Meadow, a high elevation (3147 m) site near Huehuetenango in the Sierra de los Cuchumantanes. Changes in vegetation and fire were reconstructed using pollen and charcoal from a sediment core dated ca. 12,000–2100 cal yr BP. Changes in forest taxa indicate that periods of drier climate were observable ca. 12,000–10,000 years ago, and later in the Holocene. Our results show that the climate was gradually drying around Miqul Meadow before the rise of the Maya in the lowlands.

2008. Medina, M.; S. Grill y M.L. López. “Palinología Arqueológica: Su Implicancia para el Estudio del Período Prehispánico Tardío de las Sierras de Córdoba (Argentina)”. Intersecciones en Antropología 9: 99-112. Facultad de Ciencias Sociales, Universidad Nacional del Centro de la Provincia de Buenos Aires, Olavarría.

by Matías E. Medina

Dynamics of protein expression during pollen germination in canola (Brassica napus)

by Eric Pedersen

Paleolimnology of Laguna Saladilla, Dominican Republic inferred from diatoms and other paleoenvironmental proxies

by Maria Caffrey

Co-authored with Sally P. Horn, Kurt H. Haberyan, and Donald G. Sullivan. Poster presented at the American Society of Limnology and Oceanography (ASLO) aquatic sciences meeting, San Juan Puerto Rico (2011).

Laguna Saladilla is a large (ca. 200 ha), freshwater coastal lake (pH 7.7) located approximately 5 km inland from the... more Laguna Saladilla is a large (ca. 200 ha), freshwater coastal lake (pH 7.7) located approximately 5 km inland from the Atlantic coast of the Dominican Republic, near the border with Haiti. Surface sediment diatoms from across the modern lake were compared to water chemistry (e.g. pH and alkalinity) and physical parameters (e.g. temperature, clarity, and depth). Diatoms and other geochemical data from an 8.5 m sediment core were used to produce a record of changes in lake conditions, particularly lake depth and paleosalinity. Geochemical data suggest that salinity was high from ca. 8031 to 3650 cal yr BP, possibly with greater stratification of the water column. Salinity gradually decreased until ca. 2500 cal yr BP, when a large increase in manganese deposition was followed by a greater abundance of freshwater diatom species.