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Home The River Basin People and the River Governance Resource Management
The River Basin
Climate and Weather
Water Quality
Ecology & Biodiversity
 Aquatic Ecology
 Building Blocks
 Aquatic Habitats
 Life in Aquatic Ecosystems
 Food Chains & Webs
 Biomass & Production
Classification of Organisms
 Factors Affecting Aquatic Ecosystems



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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 in the following pages, in terms of system drivers and habitat response to stressors.




Explore the sub-basins of the Kunene River

Video Interviews about the integrated and transboundary management of the Kunene River basin

Explore the interactions of living organisms in aquatic environments

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