Zonation of submerged vegetation in Lake Kariba, Zimbabwe and its ecological interpretation
The submerged vegetation of Lake Kariba is described in relation to degree of slope (lake morphometry), depth and light transparency. The direct gradient analysis technique - canonical correspondence analysis and the TWINSPAN classification programs were used to analyse the data set. The western end of the lake with low transparency has a low species diversity (with Vallisneria aethiopica dominating). Species diversity increases with increased transparency in the other parts of the lake. The classification revealed monospecific communities for all species as well as mixed communities with Lagarosiphon as the associate species with the broadest distribution. The ordination revealed a first axis strongly related to the depth and transparency gradients and the second axis related to slope.
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Format: | monograph biblioteca |
Language: | English |
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Department of National Parks and Wild Life Management
1987-12
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Subjects: | Biology, Ecology, Environment, Zimbabwe, Lake Kariba, vertical distribution, ecological zonation, aquatic plants, |
Online Access: | http://hdl.handle.net/1834/24969 |
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dig-aquadocs-1834-249692021-06-30T02:01:42Z Zonation of submerged vegetation in Lake Kariba, Zimbabwe and its ecological interpretation Machena, C. Biology Ecology Environment Zimbabwe Lake Kariba vertical distribution ecological zonation aquatic plants The submerged vegetation of Lake Kariba is described in relation to degree of slope (lake morphometry), depth and light transparency. The direct gradient analysis technique - canonical correspondence analysis and the TWINSPAN classification programs were used to analyse the data set. The western end of the lake with low transparency has a low species diversity (with Vallisneria aethiopica dominating). Species diversity increases with increased transparency in the other parts of the lake. The classification revealed monospecific communities for all species as well as mixed communities with Lagarosiphon as the associate species with the broadest distribution. The ordination revealed a first axis strongly related to the depth and transparency gradients and the second axis related to slope. 2021-06-24T16:17:29Z 2021-06-24T16:17:29Z 1987-12 monograph http://hdl.handle.net/1834/24969 en Lake Kariba Fisheries Research Institute Project Report application/pdf application/pdf 23 Department of National Parks and Wild Life Management Kariba, Zimbabwe http://aquaticcommons.org/id/eprint/8174 424 2012-03-09 07:04:11 8174 Lake Kariba Fisheries Research Institute, Zimbabwe |
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Biology Ecology Environment Zimbabwe Lake Kariba vertical distribution ecological zonation aquatic plants Biology Ecology Environment Zimbabwe Lake Kariba vertical distribution ecological zonation aquatic plants |
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Biology Ecology Environment Zimbabwe Lake Kariba vertical distribution ecological zonation aquatic plants Biology Ecology Environment Zimbabwe Lake Kariba vertical distribution ecological zonation aquatic plants Machena, C. Zonation of submerged vegetation in Lake Kariba, Zimbabwe and its ecological interpretation |
description |
The submerged vegetation of Lake Kariba is described in relation to degree of slope (lake morphometry), depth and light transparency. The direct gradient analysis technique - canonical correspondence analysis and the TWINSPAN classification programs were used to analyse the data set. The western end of the lake with low transparency has a low species diversity (with Vallisneria aethiopica dominating). Species diversity increases with increased transparency in the other parts of the lake. The classification revealed monospecific communities for all species as well as mixed communities with Lagarosiphon as the associate species with the broadest distribution. The ordination revealed a first axis strongly related to the depth and transparency gradients and the second axis related to slope. |
format |
monograph |
topic_facet |
Biology Ecology Environment Zimbabwe Lake Kariba vertical distribution ecological zonation aquatic plants |
author |
Machena, C. |
author_facet |
Machena, C. |
author_sort |
Machena, C. |
title |
Zonation of submerged vegetation in Lake Kariba, Zimbabwe and its ecological interpretation |
title_short |
Zonation of submerged vegetation in Lake Kariba, Zimbabwe and its ecological interpretation |
title_full |
Zonation of submerged vegetation in Lake Kariba, Zimbabwe and its ecological interpretation |
title_fullStr |
Zonation of submerged vegetation in Lake Kariba, Zimbabwe and its ecological interpretation |
title_full_unstemmed |
Zonation of submerged vegetation in Lake Kariba, Zimbabwe and its ecological interpretation |
title_sort |
zonation of submerged vegetation in lake kariba, zimbabwe and its ecological interpretation |
publisher |
Department of National Parks and Wild Life Management |
publishDate |
1987-12 |
url |
http://hdl.handle.net/1834/24969 |
work_keys_str_mv |
AT machenac zonationofsubmergedvegetationinlakekaribazimbabweanditsecologicalinterpretation |
_version_ |
1756077967053684736 |