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Chapter 10: Population Dynamics
B A 13 C D
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Chapter 10: Population Dynamics
12 t Nt = Noert Nt = No
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Consequences? Why?
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Sea Lamprey Invasion
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Sea Lamprey Invasion 1
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Lamprey and Lake Trout Populations
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5 Chinch Bug (Blissus leucopterus)
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Fig in Ricklefs 2000
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Populations are Dynamic!!
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DISPERSAL 10 i - immigration e - emmigration
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= f (b, d, i, e) N
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“The Wild, Wacky World of Dispersal”
Fig in Molles 2006
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Dispersal: Drift
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Dispersal: Drift Fremont Cottonwood
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Dispersal: Animal Vectors
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Dispersal: Explosive 7 8 Zygomycete Fungus: Pilobolus
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Dispersal: Natal 12 11
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Measuring Dispersal Rates
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Measuring Dispersal Rates
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Expanding Populations (Anthropogenic Factors)
European Starling (Sturnus vulgaris) 12
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Expanding Populations (Anthrogenic Factors)
European Honeybee Hybrid: Africanized Honey Bee African Honeybee Queen
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Expanding Populations (Anthrogenic Factors)
Africanized Honey Bee Fig in Molles 2006
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Expanding Populations (Anthrogenic Factors)
Green Alga Pest: Caulerpa
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Expanding Populations (Anthrogenic Factors)
Jacques Cousteau Institue (Monaco)
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Eurasian Collared Dove: Introduction into Bahamas: mid-1970s
Expanding Populations: Anthropogenic Factors Eurasian Collared Dove: Introduction into Bahamas: mid-1970s 2
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Expanding Populations
(NON-Anthropogenic Factors) Eurasian Collared Dove: Spread into Europe from Turkey after 1900 Fig in Molles 2006
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Expanding Populations: Non-Anthropogenic Factors
10 11 12 Mechanism: Natal Dispersal
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Rates of Expansion Fig in Molles 2006
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Dispersal in Response to Climate Change
Eastern Hemlock (Tsuga canadensis) Sugar Maple (Acer saccharum) 13 14
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~ 20,000 Years Ago
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Dispersal in Response to Climate Change
Fig in Molles 2006
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DISPERSAL: Response to
Short-Term Changes in Food Abundance European Kestrel (Falco tinnunculus) Voles (Microtis sp.)
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NUMERICAL RESPONSE Fig. 10.7 in Molles 2006
Change in Predator Population Density In Response to Prey Population Density Fig in Molles 2006
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NUMERICAL RESPONSE MECHANISM:
Increased Reproduction OR Increased Dispersal 15 16
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Metapopulation (Subpopulations living on Habitat Patches connected by Exchange of Individuals among Patches) 18 Rocky Mountain Parnassian Butterfly (Parnassius smintheus) 19
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18 20 Alpine Meadow Habitat
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Patch Size and Population Density
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Metapopulations and Conservation Management
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7 http://io.uwinnipeg.ca/~simmons/16cm05/1116/31-08-Pilobolus.jpg
1 inv_spp_summ/petromyzon_marinus5.JPG 2 XDwW_0acrf2Y=&h=375&w=500&sz=95&hl=en&start=20&tbnid=ohqI0m QF-Py3IM:&tbnh=98&tbnw=130&prev=/images%3Fq%3Dturtle%2Bnotched %2Bshell%26gbv%3D2%26hl%3Den%26sa%3DG 3 &usg=__TAlqcRFEO2Ln-BJiQeXqY7S6q-w=&h=629&w=579&sz=140&hl=en& start=29&um=1&tbnid=-4in4-eY61RRpM:&tbnh=137&tbnw=126&prev=/images %3Fq%3Deurasian%2Bcollared%2Bdistribution%2Bunited%2Bstates%26start %3D20%26ndsp%3D20%26um%3D1%26hl%3Den%26sa%3DN 4 5 6 Fur_cn jpg 7 8 Pilobolus2.jpg
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10 http://www.hamiltonnature.org/birds/images/CollaredDove1.jpg
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