Post doc project
This presentation is the property of its rightful owner.
Sponsored Links
1 / 32

Post doc project PowerPoint PPT Presentation


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

Post doc project. links between physiology, behaviour, and life history ecological implications of physiology physiological mechanisms of ecology. Community Ecology. Population Ecology. Life History. Behaviour. Physiology. Cell Biology. Molecular Biology. Basic design.

Download Presentation

Post doc project

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


Post doc project

  • links between physiology, behaviour, and life history

  • ecological implications of physiology

  • physiological mechanisms of ecology


Community Ecology

Population Ecology

Life History

Behaviour

Physiology

Cell Biology

Molecular Biology


Basic design

  • natural and experimentally-induced variation in autumn hoard size

  • winter behaviour and metabolism

  • spring behaviour and metabolism

  • reproductive success


a) Metabolic requirements of foraging in a cold environment

  • reduced hoard size increases cold exposure

  • increases thermogenic requirements

  • increased Summit MR – FMR – RMR in winter


b) Links between RMR, FMR, and SMR

  • repeated winter and reproductive metabolic measurements

  • quantified and experimentally manipulated food availability


d) Metabolic consequences of early reproduction

  • timing of parturition important

  • natural (and experimentally induced?) variation in parturition date

  • predict early breeders have higher FMR (and RMR?), lower production efficiency, but higher RS


Community Ecology

Population Ecology

Life History

Behaviour

Physiology

Cell Biology

Molecular Biology


I. Autumn Hoarding Behaviour


Autumn 2001 Hoarding Observations

SU/KL Cone Count = 19.5

Average = 1170

Number

of

Individuals

Estimated Number of Cones Hoarded


Autumn 2002 Hoarding Observations

SU/KL Cone Count = 35.0

Average = 5020

Number

of

Individuals

Estimated Number of Cones Hoarded


Autumn 2003 Hoarding Observations

SU/KL Cone Count = 9

Average = 5020

Number

of

Individuals

Estimated Number of Cones Hoarded


Hoarding Functional Response

Estimated Number

of

Cones Hoarded

Number of Cones per Tree


Juveniles (avg= 2950)

Ad. Females (avg= 5020)

Ad. Males (avg= 8645)

Within Year Variation by Age and Sex Class

Autumn 2002 Hoarding Observations

SU/KL Cone Count = 35.0

Number

of

Individuals

Estimated Number of Cones Hoarded


Scatterhoarding vs. Larderhoarding

Proportion of

Cones Hoarded

to 1o Midden


Mushrooms/Truffles vs. Cones

Number

of

Individuals

Frequency of Mushroom/Truffle Hoarding

(proportion of total # of hoarded items)


Midden Surface Cone Counts

2001

2002


Midden Surface Cone Counts

2001 & 2002 Combined

r2 = 0.32, p < 0.001


II. Winter & Reproductive Energetics


Winter Resting Metabolic Rate (RMR)

n = 36, r2 = 0.11, p = 0.047

Winter

Resting

Metabolic

Rate

(kJ/day)

Body Mass (g)


Winter Resting Metabolic Rate (RMR)

Winter

Resting

Metabolic

Rate

(kJ/day)

Avg =

140 kJ/day


p = 0.23

Winter Resting Metabolic Rate (RMR)


Winter Field Metabolic Rate (FMR or DEE)

n = 51, r2 = 0.190, p = 0.001

Winter

Daily

Energy

Expenditure

(kJ/day)

Body Mass (g)


Winter Field Metabolic Rate (FMR or DEE)

Winter

Daily

Energy

Expenditure

(kJ/day)

Avg =

200 kJ/day


Winter FMR vs. Winter RMR

n = 28, r= 0.012, p = 0.95

Winter

FMR

(kJ/day)

Winter RMR (kJ/day)


Winter FMR vs. Winter RMR

Winter

Daily

Energy

Expenditure

(x RMR)

Avg =

1.45xRMR


Winter FMR and Lactating FMR

Daily

Energy

Expenditure

(kJ/day)


Lactating FMR

n = 46, r= 0.001, p = 0.94

Lactating

Daily

Energy

Expenditure

(kJ/day)

Body Mass (g)


Lactating FMR

Lactating

Daily

Energy

Expenditure

(kJ/day)


Lactating FMR

Lactating

Daily

Energy

Expenditure

(kJ/day)


FMR Summary

Daily

Energy

Expenditure

(kJ/day)

LL Food Add

KL/SU Control

LL Control


SourceSum-of-SquaresdfMean-SquareF-ratioP

SEASON278658.1571278658.15742.3280.000

TREAT32509.834216254.9172.4690.090

SEASON*TREAT63555.514231777.7574.8270.010

BODYMASS4225.12614225.1260.6420.425

Error592497.575906583.306

Daily

Energy

Expenditure

(kJ/day)

LL Food Add

KL/SU Control

LL Control


FMR Summary

1994 Control (following mast year)

Daily

Energy

Expenditure

(kJ/day)

LL Food Add

KL/SU Control

LL Control


  • Login