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Home The River Basin People and the River Governance Resource Management
The Limpopo River Basin
 Introduction
Geography
Climate and Weather
Hydrology
Water Quality
Ecology and Biodiversity
 Ecology
 Aquatic Ecology
 Building Blocks
 Aquatic Habitats
 Life in Aquatic Ecosystems
 Food Chains and Webs
 Biomass and Production
Classification of Organisms
 Micro-organisms
 Plants
 Invertebrates
 Vertebrates
 Fish Species of the Limpopo
 Factors Affecting Ecosystems
 Wetlands
 Biodiversity
 Millennium Ecosystem Assessment
Sub-basin Summaries
 References

 



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Aquatic Ecosystems: Classification of Organisms  

Aquatic organisms can be classified into four major groups, varying in biological characteristics, habitat, and adaptations, but linked within a complex network of ecological roles and relationships:

The aquatic ecosystem of a river system is generally comprised of its fish, aquatic invertebrates, riparian plants, and microorganism components. Key issues related to aquatic habitat and riparian vegetation are described below, in terms of system drivers and habitat response to stressors.

Nile Crocodile, an example of a vertebrate predator.
Source: McCans 2006
( click to enlarge )

 



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Explore the sub-basins of the Limpopo River


Explore the interactions of living organisms in aquatic environments


Examine how the hydrologic cycle moves water through and around the earth


Tour video scenes along the Limpopo related to The River Basin Theme