a bugs life
DESCRIPTION
Seminar on research by my graduate students on plant-insect interactions.TRANSCRIPT
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A bug’s life: trophic implications of plant invasions.
Spafford, Reid, & Lortie
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bugs have friends too
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theory community invasion trophic
methods iPod dust buster contrasts
trophic implicationresearch
interactions pollinators drivers
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integrated community concept
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The sum of all direct and indirect, positive and negative influences which change in a non-proportional manner
along productivity gradients.
net interactions
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wave particle duality
+
-
light community
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keystone
module
non-keystone
module
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+ -
diversity
predator
H
h
L
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disturbanceEICAENERfacilitationfluctuating resource availabilitynovel weaponspropagule pressure
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flip & extend this to invertebrates
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nano with camera
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sweeps
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iPod nanos anewpaired invasive-native
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sweeps, pitfall, & pans
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uninvaded
sweeps, pitfall, & pans
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indicator species analysis
sweeps, pitfall, & pans
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sweeps, pitfall, &
pans
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pre post0
1
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7vi
sita
tion
rate
/hr
invasive
native
invasive flowering peak
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pre post0
100
200
300
400
500
600
mea
n vi
sit t
ime
(sec
)
invasive
native
invasive flowering peak
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pre post0
1
2
3
4ta
xa ri
chne
ss
invasive
native
invasive flowering peak
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entire arthropod communities shift – not just herbivoresnow, need to decouple effect & response
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however, given wide shift in all arthropod guilds,subsequent community less resistant
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www.youtube.com/user/metachristopher
www.ecoblender.org
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