Botanical features of the Algerian Sahara

About this eBook

Author

Cannon, William Austin, 1870-1958

Original Publication

United States: Carnegie Institution of Washington, 1913.

Credits

Galo Flordelis (This file was produced from images generously made available by The Internet Archive)

Language

English

LoC Class

QK: Science: Botany

Subject

Roots (Botany)

Category

Text

Project Gutenberg

eBook-No. 70581

Release Date

April 18, 2023

Copyright

Public domain in the USA.

Contents

1. 1.BOTANICAL FEATURES OF THE ALGERIAN SAHARA
2. 2.CONTENTS.
3. 3.LIST OF ILLUSTRATIONS.
4. 4.INTRODUCTION.
5. 5.GEOGRAPHICAL CHARACTERISTICS OF ALGERIA.
6. 6.CLIMATE OF ALGERIA. — Table 1.— Seasonal distribution of rain. — Table 2.— Rainfall at Ouargla, in millimeters. — Table 3.— Seasonal distribution, in percentages, of rain. — Table 4.— Mean relative humidity, in percentages. — Table 5.— Evaporation in millimeters , 1908. — Table 6.— Evaporation-rainfall ratio, monthly , 1908. — Table 7.— Evaporation-rainfall ratio, seasonal , 1908. — Table 8.— Maximum daily range in temperature , 1904. — Table 9.— Absolute daily range in temperature. — Table 10.— Average maximum temperatures. — Table 11.— Sums of the daily maximum temperatures. — Table 12.— Soil and air temperatures, Ghardaia, July 2-11, 1911.
7. 7.SOME CHARACTERISTICS OF THE VEGETATION OF THE TELL.
8. 8.THE FORESTS OF ALGERIA.
9. 9.THE HIGH PLATEAU.
10. 10.BOGHARI TO LAGHOUAT.
11. 11.DJELFA TO LAGHOUAT.
12. 12.LAGHOUAT. — THE OASIS OF LAGHOUAT. — THE PLAIN. — THE DUNES NEAR LAGHOUAT. — THE MOUNTAINS ABOUT LAGHOUAT. — EFFECTS OF GRAZING ON VEGETATION NEAR LAGHOUAT.
13. 13.FROM LAGHOUAT TO GHARDAIA. — REGION OF THE DAYAS. — DAYA OF TILREMPT. — THE CHEBKA.
14. 14.GHARDAIA. — THE OASIS OF GHARDAIA. — THE PLAIN (HAMADA) OF GHARDAIA. — THE MOUNTAINS ABOUT GHARDAIA. — THE VALLEY OF THE M’ZAB. — PROTECTED AREAS NEAR GHARDAIA. — ROOT-HABITS IN THE GHARDAIA REGION. — LEAF-HABITS IN THE GHARDAIA REGION. — GROWTH AND FLOWERING HABITS IN THE GHARDAIA REGION.
15. 15.GHARDAIA TO TOUGGOURT. — GHARDAIA TO OUARGLA—VEGETATION.
16. 16.OUARGLA TO TOUGGOURT—VEGETATION.
17. 17.TOUGGOURT TO BISKRA—PHYSICAL FEATURES AND VEGETATION.
18. 18.THE BISKRA REGION. — TOPOGRAPHY. [29] — PLANT HABITATS OF THE BISKRA REGION. — VEGETATION OF THE BISKRA REGION.
19. 19.GENERAL SUMMARY AND CONCLUSIONS. — THE ENVIRONMENTAL CONDITIONS OF PLANTS IN ARID REGIONS. — ENVIRONMENTAL FEATURES OF THE FLORA OF ALGERIA. — SOME EFFECTS OF TEMPERATURE AND RAINFALL IN SOUTHERN ALGERIA. — THE SOIL RELATION IN SOUTHERN ALGERIA. — ROOT-CHARACTERS AND SPECIES DISTRIBUTION IN SOUTHERN ALGERIA. — THE BIOTIC FACTOR. — COMPARISON OF SOME GENERAL FEATURES OF THE VEGETATION OF SOUTHERN ALGERIA AND OF SOUTHERN ARIZONA.
20. 20.FOOTNOTES:
21. 21.Transcriber's note:

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