Biodiversity of the Zambezi Basin Wetlands: Main report PDF Download
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Author: Jonathan Timberlake
Publisher:
ISBN:
Category : Biodiversity
Languages : en
Pages : 316
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Book Description
Author: Jonathan Timberlake
Publisher:
ISBN:
Category : Biodiversity
Languages : en
Pages : 316
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Book Description
Author: Jonathan Timberlake
Publisher:
ISBN:
Category : Biodiversity conservation
Languages : en
Pages : 108
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Book Description
Author: Ainsworth, R., Cowx, I.G., Funge-Smith, S.J.
Publisher: Food & Agriculture Org.
ISBN: 9251338264
Category : Technology & Engineering
Languages : en
Pages : 325
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Book Description
This review presents summary information on 45 river and great lake basins of the world, which support inland fisheries. The information presented is drawn from published information in peer-reviewed journals as well as grey literature. Each basin summary is presented in a common format, covering the description of the fishery, estimates of catch and numbers of people engaged in the fishery, important biodiversity features and threats to the fishery. An analysis of the replacement costs of inland fish of the basin is also presented. This is expressed in terms of the water, land and greenhouse gas footprint that would arise if the inland fish that are currently produced had to be replaced with other forms of food (such as aquaculture fish, livestock or field crops).
Author: Jonathan Timberlake
Publisher:
ISBN:
Category : Biodiversity
Languages : en
Pages : 94
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Book Description
Author: Jane Turpie
Publisher:
ISBN:
Category : Wetlands
Languages : en
Pages : 374
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Book Description
Author: Zambezi Watercourse Commission
Publisher:
ISBN:
Category : Africa, Southern
Languages : en
Pages : 324
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Book Description
Author: McCartney, M.
Publisher: IWMI
ISBN: 9290907630
Category :
Languages : en
Pages : 64
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Book Description
By affecting evapotranspiration and influencing how water is routed and stored in a basin, forests, wetlands and floodplains play a crucial role in the hydrological cycle. Although they are widely attributed a major role in regulating flows (i.e., both attenuating floods and maintaining flow during dry periods), these services are rarely factored into the planning and management of water resources. One reason for the failure to include them is lack of understanding. Very often the extent to which natural regulating functions really occur is unclear. Against this background, this report describes a simple, pragmatic approach for quantifying the flow regulating functions of natural ecosystems. The method has been applied at 14 locations in the Zambezi River Basin.
Author: Eric J. Hiscock
Publisher: Iucn-World Conservation Union
ISBN:
Category : Business & Economics
Languages : en
Pages : 194
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Author: Elenestina Mwelwa-Mutekenya
Publisher: CRC Press
ISBN: 0429610726
Category : Technology & Engineering
Languages : en
Pages : 190
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Book Description
The Middle Zambezi, host to a rich biodiversity, is located in the central part of the Zambezi River Basin which covers eight Southern African Countries. The area is located downstream of three hydropower schemes. In the last decades, the floodplain riparian tree, the Faidherbia albida, vital for the local wild life, has shown a worrying decrease in its regeneration rates. This thesis explores establishing the environmental flow regime for the Middle Zambezi reach in order to minimise the impact of the upstream hydropower schemes on the river environment, using the Faidherbia albida tree as a biological indicator. The research identified that the current dam operations have completely altered the natural hydrological rhythm from pre-Kariba dam dry season flows of 100-200 m3/s increasing to 1,000-1,500 m3/s. The sudden closure of the dam floodgates can be linked to the observed river channel-widening phenomenon. In addition, the Faidherbia albida tree now experiences longer flood residence over the floodplain, making it inaccessible to animals to allow for regeneration. In order to save the F. albida tree, a two-pronged environmental flow regime is proposed of releasing a moderate flood of 5,800 m3/s once in 5 years, for 5 to 6 weeks in the months of February to March, and phasing the spillway gates closure over a period of 3 to 4 weeks to keep the floodplain wet enough until the months of May and June. Phasing of the spillway gate closure would also mitigate the excessive bank erosion.
Author:
Publisher: WorldFish
ISBN: 9832346614
Category :
Languages : en
Pages : 301
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Book Description
