Floodplain rivers and human affairs
9 important questions on Floodplain rivers and human affairs
What is a headwater river? And what does it do?
What are the four gradual changes in a river (erosive river to depositional river)
at the edges swamps are created: deposited sediment
River becomes larger: water is retained which leads to an increase in plankton community (first zooplankton then phytoplankton) --> submerged plants recolonize the edges
Sediments create floodplains during floods
Why do the roots of submerged plants play no role in the uptake of nutrients?
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What are the disadvantages of submerged plants?
low diffusion rates of gases in water
a lot of shadow underwater (less light available)
turbulent waters
What do submerged plants need?
What role can submerged- and emergent plants play in the river ecosystem?
the plants catch organic matter like leaves that fell in
take up nitrate from environment, and take care of bacteria in the biofilm
What is the difference between swamps, marshes and bogs
A marsh almost has no woody plants and contains mostly grasses or rushes. (veel russen en cypergrassen te vinden)
A bog is mostly found in colder regions. They occur when the groundwater is acidic and low in nutrients. They accumulate peat as a deposit, often mosses are found here.
How is it possible that swamps are mostly anaerobic?
huge production (uses a lot of oxygen)
huge bacterial and animal respiration
What are some benefits of floodplains?
regulates water and improves water quality
protects us from flooding hazards
The question on the page originate from the summary of the following study material:
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