Managing Aquatic Vegetation in the Volta basin: Utilization as a (management) tool - PowerPoint PPT Presentation

Loading...

PPT – Managing Aquatic Vegetation in the Volta basin: Utilization as a (management) tool PowerPoint presentation | free to download - id: 444982-ZGMyY



Loading


The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
About This Presentation
Title:

Managing Aquatic Vegetation in the Volta basin: Utilization as a (management) tool

Description:

Managing Aquatic Vegetation in the Volta basin: Utilization as a (management) ... including diseases, and preventing the full utilization of other aquatic resources. – PowerPoint PPT presentation

Number of Views:76
Avg rating:3.0/5.0
Slides: 21
Provided by: ictdUgEd
Category:

less

Write a Comment
User Comments (0)
Transcript and Presenter's Notes

Title: Managing Aquatic Vegetation in the Volta basin: Utilization as a (management) tool


1
Managing Aquatic Vegetation in the Volta basin
Utilization as a (management) tool
  • Ted Yemoh Annang
  • Volta Basin Research Project
  • University of Ghana

2
Introduction
  • Aquatic plants
  • Form an important component of the aquatic
    ecosystem
  • Replenish oxygen stock

3
Introduction contd
  • Others
  • Higher evapo-transpiration rates
  • Provide refuge for other aquatic organisms
    including snail hosts of Schistosomiasis.
  • Affect navigation and recreation (tourism).

4
(No Transcript)
5
Research findings
  • Appreciable levels of nutrients and other
    essential substances (nitrogen, potassium and
    phosphorus) and crude protein have been found in
    dominant aquatic plants species in the Volta
    basin such as Ceratophyllum demersum, Echinochloa
    sp., Ludwigia stolonifera, Vossia cupsidata.

6
Contd
  • Biochemical analyses of the dry matter of these
    dominant plants also indicate useable levels of
    these nutrient elements and fibre.
  • These findings give credence to the idea of
    utilizing these plants for economic benefits,
    e.g. as soil additives and fodder.

7
Present situation
  • Currently, most of the shoreline of the river is
    covered by luxuriant vegetation dominated by
    grasses and the submerged plants, causing much
    nuisance, including diseases, and preventing the
    full utilization of other aquatic resources.

8
(No Transcript)
9
(No Transcript)
10
(No Transcript)
11
Control/Management Options
  • There are three management options
  • Chemical
  • Biological
  • Manual/Physical

12
Control measures contd
  • Physical /manual option cheaper and most favoured
    worldwide
  • Either with harvesters or with hand held removers
    like cutlass and other implements
  • VBRP proposes harvest and use of plant material.

13
Composting
  • Composting involves the decomposition of
    harvested aquatic plants to release
    nutrients/other materials held in their body.
  • In this case other natural nutrient sources,
    like wood ash and animal droppings are added to
    enrich the manure.

14
Composting contd
  • Composting using aquatic plants can be done at
    different levels
  • small-scale at community/household levels, for
    subsistence farming/horticulture
  • commercial scale as done at VREL banana farms

15
Subsistence
16
Commercial
17

18
Socio-economic impact of tool
  • The socio-economic gains of composting as a tool
    for managing aquatic vegetation are many.
  • Reduce aquatic vegetation to reduce adverse
    impact especially prevalence of schistosomiasis
  • communities have observed that composting
    could enhance soil nutrients and agricultural
    lands,
  • rejuvenate such lands/soils for increased food
    production in an environmentally friendly
    manner.
  • It holds key to promoting organic farming and
    generate income

19
Conclusion
  • Composting as a management tool will help
  • Increase utilization of water resources
  • Reduce disease incidence
  • Make the Volta Basin the hub of organic farming
  • Therefore generate health and wealth

20
(No Transcript)
About PowerShow.com