a bugs life

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DESCRIPTION

Seminar on research by my graduate students on plant-insect interactions.

TRANSCRIPT

A bug’s life: trophic implications of plant invasions.

Spafford, Reid, & Lortie

bugs have friends too

theory community invasion trophic

methods iPod dust buster contrasts

trophic implicationresearch

interactions pollinators drivers

integrated community concept

The sum of all direct and indirect, positive and negative influences which change in a non-proportional manner

along productivity gradients.

net interactions

wave particle duality

+

-

light community

keystone

module

non-keystone

module

+ -

diversity

predator

H

h

L

disturbanceEICAENERfacilitationfluctuating resource availabilitynovel weaponspropagule pressure

flip & extend this to invertebrates

nano with camera

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sweeps

iPod nanos anewpaired invasive-native

sweeps, pitfall, & pans

uninvaded

sweeps, pitfall, & pans

indicator species analysis

sweeps, pitfall, & pans

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sweeps, pitfall, &

pans

pre post0

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7vi

sita

tion

rate

/hr

invasive

native

invasive flowering peak

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100

200

300

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500

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mea

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sit t

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(sec

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invasive

native

invasive flowering peak

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4ta

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invasive

native

invasive flowering peak

entire arthropod communities shift – not just herbivoresnow, need to decouple effect & response

however, given wide shift in all arthropod guilds,subsequent community less resistant

www.youtube.com/user/metachristopher

www.ecoblender.org

+ =

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