Population dynamics of the waterhyacinth (Eichhornia crassipes (Mart.) Solms): with special references to the Sudan
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Buch |
| Sprache: | English |
| Veröffentlicht: |
Hohenheim
Univ., Fachgebiet Herbologie
1979
|
| Schriftenreihe: | Berichte aus dem Fachgebiet Herbologie der Universität Hohenheim
17 |
| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | 132 Seiten Diagramme, Karten 2 Beilagen |
Internformat
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| 100 | 1 | |a Freidel, J. W. |e Verfasser |4 aut | |
| 245 | 1 | 0 | |a Population dynamics of the waterhyacinth (Eichhornia crassipes (Mart.) Solms) |b with special references to the Sudan |c by J. W. Freidel |
| 264 | 1 | |a Hohenheim |b Univ., Fachgebiet Herbologie |c 1979 | |
| 300 | |a 132 Seiten |b Diagramme, Karten |e 2 Beilagen | ||
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| 490 | 1 | |a Berichte aus dem Fachgebiet Herbologie der Universität Hohenheim |v 17 | |
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Datensatz im Suchindex
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Titel: Population dynamics of the waterhyacinth (Eichhornia crassipes (Mart.) Solms)
Autor: Freidel, Jürgen W
Jahr: 1979
CONTENTS
page
I. INTRODUCTION 1
1. General Aspects 1
2. Background and Justification 6
3. Abbreviations 8
II. DESCRIPTION OF THE INFESTED AREA 9
1. Geography 10
2. Climate 16
3. Hydrology 20
III. POPULATION DYNAMICS OF THE WATERHYACINTH 34
1. Distribution 34
1.1. Total Infestation 35
Method 36
Results and Discussion 37
1.2. Infestation on the Bahr el Jebe!
and White Nile 40
Method 40
Results and Discussion 43
1.3. Supply from Sidechannels
and Tributeries 50
2. Change of Distribution 52
2.1. Growth 52
2.2. Reproduction 55
2.2.1. Sexual Reproduction 56
2.2.2. Vegetative Reproduction 57
2.2.2.1. Density-independent Propagation 59
a) Influence of Nutrients 60
Method 60
Results and Discussion 62
b) Influence of Leaf Area 62
Method 63
Results and Discussion 63
page
c) Influence of Temperature and rel.
Humidity 65
Method 66
Results and Discussion 67
d) Field Studies 71
Method 71
ResultsandDiscussion 73
- Malakal (winter 1974/75) 73
- Malakal (summer 1975) 73
- JAD (winter 1975) 74
- Khartoum (summer 1975) 74
2.2.2.2. Density-dependent Propagation 76
a) Greenhouse Experiment (summer 1974) 76
Method 76
Results and Discussion 76
b) Greenhouse Experiment (summer 1976
and winter 1977/78) 77
Method 77
ResultsandDiscussion 77
c) Field Experiments- (summer 1975) 80
Method 81
Results and Discussion 81
2.2.2.3. Significance of the Results for
the Sudan 82
a) Transferability of Growth Chamber
Results to the Sudan 82
- Nutrients 82
- Mechanical Disturbances 83
- Light 83
- Temperature and re. Humidity 84
b) Comparison of the Climatic Data 84
Method 85
Results and Discussion 87
page
2.3. Mortality 87
a) Greenhouse Experiment 88
Method 88
ResultsandDiscussion 89
fa) Investigations in the Field 90
2.4. Migration 93
2.4.1. Drift 93
a) Influence óf the Wind 96
b) Influence of the Littoral Zone 97
c) Investigation of the Short Distance
Drift 98
Method 98
ResultsandDiscussion 98
d) Investigation of the Medium Distance
Drift 99
e) Summery 100
2.4.2. Migration 100
a) Emigration from BWH 102
Method 102
Results and Discussion 102
b) Interaction of Propagation and
Emigration 103
c) Reasons for the Change of BWH 106
2.4.3. Immigration 111
IV. POPULATION DYNAMICS OF THE WH IN THE SUDAN 113
- Growth 114
- Reproduction-sexual 114
-vegetative 115
- Mortality 115
- Migration
V. RECOMMENDATIONS FOR WORK IN THE FIELD 117
VI. FUTURE PROSPECTS
1. WH-Project
2. Jonglei Canal
VII. SUMMERY
VIII.LITERATURE
124
124
125
126
129 |
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| illustrated | Not Illustrated |
| indexdate | 2024-08-10T01:41:10Z |
| institution | BVB |
| language | English |
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| physical | 132 Seiten Diagramme, Karten 2 Beilagen |
| publishDate | 1979 |
| publishDateSearch | 1979 |
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| publisher | Univ., Fachgebiet Herbologie |
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| series | Berichte aus dem Fachgebiet Herbologie der Universität Hohenheim |
| series2 | Berichte aus dem Fachgebiet Herbologie der Universität Hohenheim |
| spelling | Freidel, J. W. Verfasser aut Population dynamics of the waterhyacinth (Eichhornia crassipes (Mart.) Solms) with special references to the Sudan by J. W. Freidel Hohenheim Univ., Fachgebiet Herbologie 1979 132 Seiten Diagramme, Karten 2 Beilagen txt rdacontent n rdamedia nc rdacarrier Berichte aus dem Fachgebiet Herbologie der Universität Hohenheim 17 Wasserhyazinthe (DE-588)4189210-0 gnd rswk-swf Populationsdynamik (DE-588)4046803-3 gnd rswk-swf Sudan (DE-588)4058378-8 gnd rswk-swf Sudan (DE-588)4058378-8 g Wasserhyazinthe (DE-588)4189210-0 s Populationsdynamik (DE-588)4046803-3 s DE-604 Berichte aus dem Fachgebiet Herbologie der Universität Hohenheim 17 (DE-604)BV001900212 17 HBZ Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=006384620&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Freidel, J. W. Population dynamics of the waterhyacinth (Eichhornia crassipes (Mart.) Solms) with special references to the Sudan Berichte aus dem Fachgebiet Herbologie der Universität Hohenheim Wasserhyazinthe (DE-588)4189210-0 gnd Populationsdynamik (DE-588)4046803-3 gnd |
| subject_GND | (DE-588)4189210-0 (DE-588)4046803-3 (DE-588)4058378-8 |
| title | Population dynamics of the waterhyacinth (Eichhornia crassipes (Mart.) Solms) with special references to the Sudan |
| title_auth | Population dynamics of the waterhyacinth (Eichhornia crassipes (Mart.) Solms) with special references to the Sudan |
| title_exact_search | Population dynamics of the waterhyacinth (Eichhornia crassipes (Mart.) Solms) with special references to the Sudan |
| title_full | Population dynamics of the waterhyacinth (Eichhornia crassipes (Mart.) Solms) with special references to the Sudan by J. W. Freidel |
| title_fullStr | Population dynamics of the waterhyacinth (Eichhornia crassipes (Mart.) Solms) with special references to the Sudan by J. W. Freidel |
| title_full_unstemmed | Population dynamics of the waterhyacinth (Eichhornia crassipes (Mart.) Solms) with special references to the Sudan by J. W. Freidel |
| title_short | Population dynamics of the waterhyacinth (Eichhornia crassipes (Mart.) Solms) |
| title_sort | population dynamics of the waterhyacinth eichhornia crassipes mart solms with special references to the sudan |
| title_sub | with special references to the Sudan |
| topic | Wasserhyazinthe (DE-588)4189210-0 gnd Populationsdynamik (DE-588)4046803-3 gnd |
| topic_facet | Wasserhyazinthe Populationsdynamik Sudan |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=006384620&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
| volume_link | (DE-604)BV001900212 |
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