eileen zerba: princeton university (ezerba@princeton)

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Eileen Zerba: Princeton University ([email protected]). Eileen Zerba: Princeton University ([email protected]). Fate of solar energy impinging on an animal with a coat of fibrous insulation. Walsberg and Campbell, (1978). - PowerPoint PPT Presentation

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Page 1: Eileen Zerba: Princeton University (ezerba@princeton)
Page 2: Eileen Zerba: Princeton University (ezerba@princeton)

* * * * * * * * * * * * * * * * * * * ** * * * * * * * * * * * * *

W inter Sum m er

W ind profile

Tem perature profile

Thermal radiation

Sky therm al radiation

Thermal radiation

Convection

Conduction

HighLow

EvaporationHigh

* * * * * * * * * * * * * * * * * * * ** * * * * * * * * * * * * *

W inter Sum m er

W ind profile

Tem perature profile

Thermal radiation

Sky therm al radiation

Thermal radiation

Convection

Conduction

HighLow

EvaporationHigh

Energy Expenditures of Animals in Relation to TheirEnergy Expenditures of Animals in Relation to TheirThermal EnvironmentsThermal Environments

Eileen Zerba: Princeton University ([email protected])

Page 3: Eileen Zerba: Princeton University (ezerba@princeton)

Other OrganismsOther Organisms

Animals Live in a MosaicAnimals Live in a Mosaicof Thermal Microhabitatsof Thermal Microhabitats

Energy Expenditures:Energy Expenditures:MaintenanceMaintenance

ThermoregulationThermoregulationLocomotionLocomotion

MicrohabitatMicrohabitatSelectionSelection

ResourcesResources

Environmental Constraint:Environmental Constraint:COLD STRESSCOLD STRESS

Eileen Zerba: Princeton University ([email protected])

Page 4: Eileen Zerba: Princeton University (ezerba@princeton)

Fate of solar energy impinging on an animal with a coat of fibrous insulation

Walsberg and Campbell, (1978)

Page 5: Eileen Zerba: Princeton University (ezerba@princeton)

Heat load imposed on a black and white bird in relation to various wind speeds experienced in nature

Walsberg and Campbell, 1978)

Page 6: Eileen Zerba: Princeton University (ezerba@princeton)
Page 7: Eileen Zerba: Princeton University (ezerba@princeton)

Examples of temperature differences in animal microclimates below ground level