Topic 9: Putting Ecological Interactions Together Flashcards
1
Q
ecological network
A
the interactions that occur among co-occuring species in a community
2
Q
food web
A
a summary of the feeding relationships within an ecological community
3
Q
keystone species
A
species that despite low biomass, exert strong effects on the structure of the communities they inhabit.
4
Q
trophic cascade
A
change in abundance that propagates beyond the two trophic levels.
- Trophic cascades are powerful indirect interactions that can control entire ecosystems. Trophic cascades occur when predators limit the density and or behaviour of their prey and thereby enhance survival of the next lower trophic level.
