An Introduction to Pollen Analysis
eBook - ePub

An Introduction to Pollen Analysis

  1. 248 pages
  2. English
  3. ePUB (mobile friendly)
  4. Available on iOS & Android
eBook - ePub

An Introduction to Pollen Analysis

About this book

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.

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Yes, you can access An Introduction to Pollen Analysis by G. Erdtman in PDF and/or ePUB format, as well as other popular books in Biological Sciences & Science General. We have over one million books available in our catalogue for you to explore.

Table of contents

  1. Cover
  2. Half title
  3. Title
  4. Copyright
  5. Foreword
  6. Editor’s Preface
  7. Preface
  8. Contents
  9. Chapter 1: Introduction
  10. Chapter 2: Chemistry of Peat
  11. Chapter 3 : Pollen Preparations
  12. Chapter 4: Preparation of Fossil Pollen-Bearing Material:Collecting of Peat Samples
  13. Chapter 5: Pollen and Spore Morphology
  14. Chapter 6: Pollen Morphology—Monocotyledons
  15. Chapter 7: Pollen Morphology—Dicotyledons
  16. Chapter 8: Pollen Morphology—Dicotyledons
  17. Chapter 9: Pollen Morphology—Gymnosperms
  18. Chapter 10: Spore Morphology—Pteridophytes
  19. Chapter 11: Pollen Analyses and the Graphic Presentation of Their Results
  20. Chapter 12: Correlations
  21. Chapter 13: Output and Dissemination of Pollen
  22. Chapter 14: Surface Samples
  23. Chapter 15: Pollen Flora of Peat Samples
  24. Chapter 16: Geographical Survey—Pollen-Statistical Investigations in Different Countries
  25. Chapter 17 Tertiary Deposits:
  26. Chapter 18 Pollen Analysis of Honey and Drugs
  27. Author Index
  28. Index of Plant Names