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WATER QUALITY IN AQUACULTURE Introduction

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WATER QUALITY IN AQUACULTURE Introduction ... there have been some problems and setbacks, such as the destruction of mangrove forests for shrimp farms ... – PowerPoint PPT presentation

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Title: WATER QUALITY IN AQUACULTURE Introduction


1
WATER QUALITY IN AQUACULTURE Introduction Part 2
Auburn University Department of Fisheries and
Allied Aquacultures
2
Classification of aquaculture systems
  • Salinity of culture water.
  • Producer/consumer relationship.
  • Type of culture unit.
  • Species
  • Management intensity

3
Salinity
  • Fresh water has a low salinity (i.e. streams,
    rivers, ponds and lakes).
  • Salt water has a high salinity (ocean waters).
  • Brackish water has a salinity between fresh water
    and salt water
  • ( estuaries ).

4
Producer/consumer relationship
  • Commercial
  • aquaculture
  • Subsistence
  • aquaculture

5
Type of culture unit
  • Many different culture units are used to grow
    aquatic organisms.
  • The culture unit selected is based on economic
    concerns, and space and water availability.
  • The type and size of the culture unit will
    determine water quality management.

6
Type of culture unit
Earthen Pond
Levee ponds
Reservoir Pond
7
Type of culture unit Cage/Pen
Cages in lake
Cages in ocean
Pen
8
Type of culture unit Tank
Rectangular tank
Circular tank
9
Raceway culture
Trout farms using raceways
10
Species
  • The species cultured will determine stocking
    density, water quality levels desired and the
    most appropriate system to use.

11
Management intensity
Extensive management no control of water
quality
Semi-intensive management partial control of
water quality
Intensive management complete control of water
quality
12
Extensive management
Marine shrimp
13
Semi-intensive management
Chemical fertilizer
Supplemental feeds
Animal manures
14
Intensive management
Aeration in ponds
Water exchange in tanks
Nutritionally complete
pelleted feeds
15
Public perceptions of aquaculture
  • Water quality concerns
  • Water pollution
  • Salinization
  • Sedimentation
  • Spread of disease
  • Other concerns
  • Wetland destruction
  • Wasteful of resources
  • Biodiversity
  • Land conversion
  • Social impacts

16
Water quality concerns
Shrimp pond effluent in Thailand
Cages in Indonesia
17
Other concerns
Preservation of saltwater mangrove
Preservation of freshwater wetlands
18
End of Unit
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