Please use this identifier to cite or link to this item: http://buratest.brunel.ac.uk/handle/2438/4300
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dc.contributor.authorDjamali, M-
dc.contributor.authorde Beaulieu, JL-
dc.contributor.authorCampagne, P-
dc.contributor.authorAkhani, H-
dc.contributor.authorAndrieu-Ponel, V-
dc.contributor.authorPonel, P-
dc.contributor.authorLeroy, SAG-
dc.date.accessioned2010-05-05T12:40:23Z-
dc.date.available2010-05-05T12:40:23Z-
dc.date.issued2009-
dc.identifier.citationReview of Palaeobotany and Palynology. 153 (3-4) 272-281en
dc.identifier.issn0034-6667-
dc.identifier.urihttp://bura.brunel.ac.uk/handle/2438/4300-
dc.description.abstractPollen rain-vegetation relationships were studied over a forest-steppe transect in Golestan National Park, NE Iran. The surface pollen percentages were compared to the vegetation composition of the respective vegetation types in 18 sampling points using both descriptive and numerical approaches. Hyrcanian lowland forests are characterized by pollen assemblages dominated by Quercus, Carpinus betulus and low frequencies of Zelkova carpinifolia. Both Parrotia persica and Zelkova carpinifolia show a very low pollen representation in modern surface samples, an under-representation that should be taken into account in the interpretation of past vegetation records. Transitional communities between the forest and steppe including Acer monspessulanum subsp. turcomanicum, Crataegus and Paliurus scrubs, Juniperus excelsa woodlands and shrub-steppe patches are more difficult to distinguish in pollen assemblages, however, they are characterized by higher values of the dominant shrub species. The transitional vegetation communities at the immediate vicinity of the forest show also a substantial amount of grass pollen. Many insect-pollinated taxa are strongly under-represented in the pollen rain including most of the rosaceous trees and shrubs, Rhamnus, Paliurus, Acer and Berberis. Artemisia steppes are characterized by very high values of Artemisia pollen and the near absence of tree pollen.en
dc.language.isoenen
dc.publisherElsevieren
dc.subjectModern pollen rain-vegetation relationshipen
dc.subjectPollen representationen
dc.subjectEcotoneen
dc.subjectGolestan National Parken
dc.subjectIranen
dc.titleModern pollen rain–vegetation relationships along a forest–steppe transect in the Golestan National Park, NE Iranen
dc.typeResearch Paperen
Appears in Collections:Environment
Institute for the Environment

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