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Senita cactus - senita moth
A pollination-seed predator
mutualism…
Lophocereus
schotii Upiga virescens
egg
Holland and DeAngelis (2002) model of the
Lophocereus-Upiga mutualism
dP/dt>0
dM/dt<0
dM/dt<0
dP/dt<0
dM/dt>0
# Plants
# M
oth
s
Lophocereus
schottii Upiga virescens
Figure 17_07
competition?
Figure 17_07
Figure 17_08
Apparent competition
Food webs
Paine 1966
Charles
Elton
El Verde rainforest web - trophic (not taxonomic) species
“Keystone species” effect of trophic structure on
species diversity
Lubchenco 1978
Figure 17_09
Figure 17_10
El Verde rainforest web - trophic (not taxonomic) species
Patterns of connectance in food webs (Martinez 1992)
More detailed, dynamical foodwebs
Jonsson, Cohen,
Carpenter (2005)
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