Plant life in West Africa:
Gespeichert in:
| Beteilige Person: | |
|---|---|
| Format: | Buch |
| Sprache: | Englisch |
| Veröffentlicht: |
Accra
Ghana Univ. Press
1985
|
| Ausgabe: | 2. ed. |
| Schlagwörter: | |
| Links: | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=003802128&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
| Umfang: | VIII, 138 S. Ill., Kt. |
| ISBN: | 9964301189 |
Internformat
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| 245 | 1 | 0 | |a Plant life in West Africa |c G. W. Lawson |
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| 264 | 1 | |a Accra |b Ghana Univ. Press |c 1985 | |
| 300 | |a VIII, 138 S. |b Ill., Kt. | ||
| 336 | |b txt |2 rdacontent | ||
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| 650 | 4 | |a Botany |z Africa, West | |
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Datensatz im Suchindex
| _version_ | 1819356547430481920 |
|---|---|
| adam_text | Titel: Plant life in West Africa
Autor: Lawson, George W.
Jahr: 1985
CONTENTS
Preface to the First Edition vii
Preface to the Second Edition vii i
Acknowledgements ix
1. INTRODUCTION i
The naming of plants—The early botanical explorers—
Opportunities for the non-professional botanist—Bota-
nical gardens—Herbaria—The economic importance
of plant life
2. THE VEGETATION ZONES OF WEST AFRICA n
Forest and savanna—The principal zones—Minor
vegetation types—Factors causing zonation—Rainfall
—Atmospheric humidity
3. THE FOREST 16
Layering of the vegetation—Special features of forest
trees—Dominance by trees—Classification of tropical
forests—Epiphytic plants—The age of trees—Composi-
tion of the forests—Montane forest—Regeneration
4. THE SAVANNAS 34
Effect of rainfall—-Effect of fire—Seasonal changes—
Zonation of savanna types—Guinea savanna—Sudan
savanna—Sahel savanna—Soil factors—-Riverine forest
—Coastal savanna—Termite mounds and vegetation-
Derivation from forest—Creation of derived savanna—
Origin of the savanna»
5. THE DESERT 51
Importance of water—Reduction in leaf area—Re-
sistance to wilting—Ephemeral plant»—Succulents—
Earlier life in the Sahara
6. LIFE ON THE SEASHORE 55
Factors affecting coastal vegetation—Zonation—Coastal
ecotypes—Wind trimming of coastal shrubs—The cause
of zonation—Erosion and deposition of sand—The in-
tertidal vegetation—Tides—Wave action—Condition» of
life—Structural features of the coast—Exposure to wave
action—Classification of algae—Shelter from wave
action—Features of marine algae—Geographical dis-
tribution of marine algae—Ocean currents—Coastal
lagoons—Mangroves—Zonation around lagoons—Plant
succession around lagoons
7. PLANTS AND SOIL 69
Analysis of soil—Colloidal properties of soil—Soil pore
space—Soil formation—Forest soils—Savanna soils-
Soil erosion—soils and agriculture—Mineral deficiencies
VI PLANT LIFE IN WEST AFRICA
in forest crops—Mineral deficiencies in savanna crops—
—Relative amounts of nutrients in the soil and vegeta-
ta ti on
8. HOW PLANTS ARE SPREAD 79
Reproduction—Fruit and seed dispersal—Water dis-
persal—Wind dispersal—Animal dispersal—Competition
—Weeds
9. THE BIOLOGY OF REPRODUCTION 84
Self-sterility mechanisms—Wind pollination—Insect
pollination—Bird and bat pollination
10. THE HISTORY OF WEST AFRICAN VEGETA- 88
TION
Evidence for past changes—Establishing a time-scale—
Pollen analysis—Past movements across the Sahara-
Present-day vegetation—Lack of homogeneity in the
vegetation—Vicarious species—Discontinuous distribu-
tion—Differences within the Savanna belt of Africa
north of the equator—Differences between the savanna
belts north and south of the equator—An explanation
of discontinuous distribution—Causes of floristic diffe-
rences
11. PLANT BEHAVIOUR IN THE TROPICS 101
Factors affecting tropical plant life—Gregarious flower-
ing—Periodic growth of trees—Photoperiodism—Mo-
dification of photoperiodism by temperature—Leaf
Movements
12. NON-FLOWERING PLANTS 108
Algae—Fungi—Termites and toadstools—Rust fungi—
Bacteria—Lichens—Mosses — Liverworts — Ferns — The
life-cycle of ferns—The fern allies—Cone-bearing plants
15. THE FUTURE 120
Agriculture and ecology—The effect of hydro-electric
schemes—Phytoplankton—Mineral nutrients—Aquatic
weeds—Methods of control—The disappearing forest—
Conservation
Botanical Index 131
General Index 134
|
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| dewey-full | 966 |
| dewey-hundreds | 900 - History & geography |
| dewey-ones | 966 - West Africa and offshore islands |
| dewey-raw | 966 |
| dewey-search | 966 |
| dewey-sort | 3966 |
| dewey-tens | 960 - History of Africa |
| discipline | Biologie Geschichte |
| edition | 2. ed. |
| format | Book |
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| id | DE-604.BV006037800 |
| illustrated | Illustrated |
| indexdate | 2024-12-20T08:42:17Z |
| institution | BVB |
| isbn | 9964301189 |
| language | English |
| oai_aleph_id | oai:aleph.bib-bvb.de:BVB01-003802128 |
| oclc_num | 17588679 |
| open_access_boolean | |
| owner | DE-703 DE-824 DE-188 |
| owner_facet | DE-703 DE-824 DE-188 |
| physical | VIII, 138 S. Ill., Kt. |
| publishDate | 1985 |
| publishDateSearch | 1985 |
| publishDateSort | 1985 |
| publisher | Ghana Univ. Press |
| record_format | marc |
| spellingShingle | Lawson, George W. Plant life in West Africa Botany Africa, West |
| title | Plant life in West Africa |
| title_auth | Plant life in West Africa |
| title_exact_search | Plant life in West Africa |
| title_full | Plant life in West Africa G. W. Lawson |
| title_fullStr | Plant life in West Africa G. W. Lawson |
| title_full_unstemmed | Plant life in West Africa G. W. Lawson |
| title_short | Plant life in West Africa |
| title_sort | plant life in west africa |
| topic | Botany Africa, West |
| topic_facet | Botany Africa, West |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=003802128&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
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