What drives dispersal
This presentation is the property of its rightful owner.
Sponsored Links
1 / 23

What drives dispersal? PowerPoint PPT Presentation


  • 67 Views
  • Uploaded on
  • Presentation posted in: General

What drives dispersal?. Mark Andruskiw. Costs & benefits. Traditional hypotheses:. Competition for resources Competition for mates Inbreeding avoidance. Berteaux and Boutin 2000. Cone abundance:. Population density:. mom. kids. Philopatry vs. dispersal:. Berteaux and Boutin 2000.

Download Presentation

What drives dispersal?

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


What drives dispersal

What drivesdispersal?

Mark Andruskiw


Costs benefits

Costs & benefits


Traditional hypotheses

Traditional hypotheses:

  • Competition for resources

  • Competition for mates

  • Inbreeding avoidance


What drives dispersal

Berteaux and Boutin 2000


Cone abundance

Cone abundance:


Population density

Population density:


Philopatry vs dispersal

mom

kids

Philopatry vs. dispersal:

Berteaux and Boutin 2000


Model mom s decision

Model mom’s decision:


Model mom s decision1

Model mom’s decision:

where:

Y = mother’s behavior

(keep, share, bequeath)

X1..Xn = explanatory variables


Model mom s decision2

Model mom’s decision:


Model mom s decision3

Model mom’s decision:

Individual level


Model mom s decision4

Model mom’s decision:

Individual level

Weight by quality

Expand neighborhood


Model mom s decision5

Model mom’s decision:

Individual level

Weight by quality

Expand neighborhood


Survival cost

Probability

Survival cost:


Model kid s decision

Model kid’s decision:

where:

Y = dispersal distance

X1..Xn = explanatory

variables


Model kid s decision1

Model kid’s decision:


Manipulations

Manipulations:

r10

male

r2

fem

r1

male

r4

fem

r9

fem

r3

male

F

r8

fem

r5

fem

r6

fem

r7

male


Core squirrel data

Core squirrel data:

  • Family information

  • Paternity

  • Midden ownership (vacancy, disp. dist)

  • Cone counts

  • Seen sheets (predators, alternate prey)


Links to other projects

Links to other projects:


Logistic needs

Logistic needs:

1 technician

35+ radios

1 telemetry flight (?)

2 receivers


2005 papers

2005 papers:

Nest switching in relation to flea load


2005 papers1

2005 papers:

Dad?

Kin recognition in red squirrels


  • Login