Knowra Flood pulse Flood pulse A recurring rise and spread of water through a river and its floodplain. Its timing, duration, and extent shape exchanges of water, nutrients, organisms, and organic matter.
River floodplain : Low-lying land beside a river that is periodically inundated by river water. It is the landscape across which a flood pulse spreads and deposits water and materials.
Flood pulse concept : An ecological framework explaining how predictable river floods sustain productivity and biodiversity in connected floodplains. It applies the flood-pulse idea to explain recurring patterns in river-floodplain ecosystems.
Amazon River : A South American river system with the world's greatest discharge and an extensive seasonally flooded basin. Its annual water-level cycle inundates vast forests and links aquatic and terrestrial habitats.
River regulation : Human control of river flows through dams, diversions, levees, and related infrastructure. Regulation can alter the magnitude, timing, and duration of natural flood pulses.
Hydrograph : A graph showing how water level or discharge changes over time at a location. Its rising and falling limbs describe the timing and duration of a river's flood pulse.
Environmental flow : The quantity, timing, and quality of water flows needed to sustain freshwater ecosystems and human livelihoods. Environmental-flow plans can preserve flood timing and extent altered by water infrastructure.
Pantanal : A vast tropical wetland in South America, fed by seasonal flooding from several rivers. Its ecosystem depends on the timing and duration of recurrent flood pulses.
Flood pulse alteration : A human-driven change to the timing, magnitude, duration, or extent of recurring river floods. It names the disruption of the defining flow pattern described by the flood-pulse concept.
River discharge : The volume of water flowing through a river cross-section per unit time. Discharge changes drive the rise and recession that produce a flood pulse.
Dam : A barrier built across a river to store, divert, or regulate water. Dams can flatten seasonal discharge variation and interrupt downstream flood pulses.
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