Ecosystems
Rivers
Light
Water
Stratification
100
A spatially explicit unit of the earth that includes all of the organisms along with all components of the abiotic environment within its boundaries
What is an ecosystem
100
Systematic framework to describe the biological function of streams from the headwaters to the mouth
What is the River Continuum Concept
100
This order stream is characterized by low light from high canopy cover
What is a first order stream
100
Water is densest at this temperature
What is 4 degrees C
100
The top mixed layer in a lake
What is the epilimnion
200
The open water zone in a lake
What is the limnetic OR pelagic zone
200
A plot of discharge vs. time
What is a hydrograph
200
k, a measure of the loss of light over depth
What is the light attenuation coefficient
200
The color/wavelength of light that is attenuated first in the water column
What is red light
200
The depth at which the temperature change in the greatest over 1 m depth
What is the thermocline
300
A component of the ecosystem AND a process occurring in the ecosystem.
What is ecosystem structure and function
300
Valley-deepening process caused by stream bed erosion
What is down-cutting
300
The range of light from 400-700 nm
What is PAR (photosynthetically active radiation)
300
The goal of this legislation was to restore and maintain the physical, chemical, and biological integrity of the nation's waters
What is the Clean Water Act
300
A lake that mixes twice during the year and is stratified in winter and summer
What is dimictic
400
Quantitative accounting of all the inputs, outputs, and storage of carbon, water, nutrients, or energy flows; uses the first law of thermodynamics
What is mass balance
400
When a meander is cut-off by a change in channel flow and is isolated
What is the formation of an oxbow lake
400
The three controls on light attenuation
What is reflection, scattering, and absorption
400
Ecosystem service that controls processes that could harm humans such as disease and flood control.
What is regulating services
400
A lake with a lower, saline layer that rarely, or never, mixes
What is meromictic
500
Long term studies, spatial comparison, experimentation, and theory
What are the 4 approaches to studying ecosystems
500
Zone of saturated sediments along the stream bottom
What is the hyporheic zone
500
Light scattering and absorption due to organic or inorganic suspended matter
What is turbidity
500
Water use that includes the domestic water supply and water for agriculture and industry
What is consumptive water use
500
A lake that mixes once a year and stratifies during the summer months
What is warm monomictic
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