Pollen Flora of North-west Himalaya

Pollen Flora of North-west Himalaya PDF Author: Hari P. Gupta
Publisher:
ISBN:
Category : Botany
Languages : en
Pages : 224

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Flora of the District Garhwal, North West Himalaya

Flora of the District Garhwal, North West Himalaya PDF Author: R. D. Gaur
Publisher: Transmedia
ISBN:
Category : Botany
Languages : en
Pages : 834

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Applications of Palynology in Stratigraphy and Climate Studies

Applications of Palynology in Stratigraphy and Climate Studies PDF Author: Bandana Samant
Publisher: Springer Nature
ISBN: 3031518772
Category :
Languages : en
Pages : 351

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The Forest Flora of North-West and Central India

The Forest Flora of North-West and Central India PDF Author: Anonymous
Publisher: BoD – Books on Demand
ISBN: 3368831828
Category : Fiction
Languages : en
Pages : 682

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Reprint of the original, first published in 1874.

The forest flora of north-west and central India: commenced by J.L. Stewart, continued and completed by D. Brandis. [With] Illustrations, drawn by W. Fitch

The forest flora of north-west and central India: commenced by J.L. Stewart, continued and completed by D. Brandis. [With] Illustrations, drawn by W. Fitch PDF Author: John Lindsay Stewart
Publisher:
ISBN:
Category :
Languages : en
Pages : 692

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The Forest Flora of North-west and Central India

The Forest Flora of North-west and Central India PDF Author: John Lindsay Stewart
Publisher:
ISBN:
Category : Botany
Languages : en
Pages : 660

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An Introduction to Pollen Analysis

An Introduction to Pollen Analysis PDF Author: G. Erdtman
Publisher: Read Books Ltd
ISBN: 1447494768
Category : Science
Languages : en
Pages : 424

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It has long been the custom among those making pollen surveys to expose microscope slides coated with a suitable adhesive and examine them for the pollen grains caught. The counts of the various species are tabulated each day and at the end of the season drawn into a graph or pollen spectrum, as it is called , which gives a clear picture of the relative amounts of the different kinds of pollen which are floating in the air from day to day throughout the growing season If done in the north temperate zone such a spectrum will show the pollen of the early flowering trees, at first a trickle, as the junipers, alders and hazels flower, then a deluge as the birches, oaks and pines and many other trees cast their pollen to the air. This is generally followed by a long stream of grass pollen, fluctuating from week to week as the various species come into flower, reach their zenith, then die out giving way to succeeding species And toward the end of the summer pollens of the late flowering weeds make their appearance, nowadays in most places completely dominated by that of the ragweed. If the record is repeated the following year the spectrum will be nearly the same The succession can be counted on to repeat itself with subtle change from year to year for many years to come, unless some cataclysm changes the surrounding vegetation which contributes to the pollen spectrum, for it is always a faithful representation of the surrounding vegetation.

World Pollen and Spore Flora

World Pollen and Spore Flora PDF Author:
Publisher:
ISBN:
Category : Palynotaxonomy
Languages : en
Pages : 164

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The Forest Flora of North-West and Central India: a handbook of the indigenous trees and srhubs of those countries

The Forest Flora of North-West and Central India: a handbook of the indigenous trees and srhubs of those countries PDF Author: John Lindsay Stewart
Publisher:
ISBN:
Category :
Languages : en
Pages : 686

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Journal of Palynology

Journal of Palynology PDF Author:
Publisher:
ISBN:
Category : Palynology
Languages : en
Pages : 172

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