Chapter 9 Flashcards
1
Q
trophic level
A
organisms in food web hat are the same number of steps from the original energy source
2
Q
autochthonous
A
instream photosynthesis, biofilm, mosses, macrophytes
3
Q
allocthonous
A
terrestrial photsynthesis, leaves, twigs…
4
Q
shear stress
A
force acting parallel to a surface (current)
5
Q
phytoplankton
A
suspended in the water column, drift with the current, dinoflagellates
6
Q
epilithic
A
growth on rocks
7
Q
epizooic
A
growth on other animals
8
Q
river continuum concept
A
changes in the river from headwater to higher order.
- canopy opening increases as you go downstream
- leaf addition decreases as you go downstream, primary productivity (sun) increases, then declines because of turbidity
9
Q
secondary production
A
Energy= Change in body-(respiration+waste)
10
Q
inbreeding depression
A
lack of genes
11
Q
outbreeding depression
A
loss of genes due to breeding with other populations
