Ch 5

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factors affecting temperature
what aspects of topography affect temperature
- -slope aspecy
- -degree of slope (tilt angle)
- -cold-air drainage
factors of temperature
topography slope aspect

a flat surface will generate a higher temperature
factors of temperature
degree of slope

the more a slope tilts the more temperature it will generate
factors of temperature
cold air drainage
- when you stick your hand out the window
- -cold air collects in low areas
microclimate
ground color

darker colors absorb more visinle light
microclimate
vegetation

shading also reduces temperature and temperature fluctuations (shrubs in desert)
microclimate
water depth

deeper water has less temperature variation
microclimate
water flow

mixing causes temperature to be more constant
temperature distribution in organisms
temperature is a critical variable affecting what

the distribution of organisms (the cactus in desert)
temperature distribution in organmisms
in organisms that have a large distribution, variations in temperature can what

result in the development of locally adapted populations called ecosystems
temperature effects on photosyntesis
extreme rates usually what

reduce the rate of phptosynthesis
temperature effects on photosynthesis
different plants have different what

optimal temperatures
temperature effects on photosynthesis
what is acclimation
- physiological changes in response to temperature
- -a plant may shift its optimal temperature for photosynthesis to match seasonal changes in environment
temperature effects on microbial activity
like plants micrpbes (bacteria and fungi) do what in reference to optimal temperature

they have an optimal temperature for growth and activity and some are able to accumulate to variations in temperature
temperature effects on animals
are animals able to acclimate

limited ability
temperature effects in animals
what is the effect of temperature affected by in animals
- if they are
- -ectothermic- relies mainly on external energy sojrces to regulate body temperature
- -endothermic-relies heavily on metabolic energy to regulate body temperature
temperature effects on animals
ectothermic

poikilothermic
temperature effects on animals
endothermic

homeothermic
energy balance
formula for energy balance
- some men cant do certain virtues religiously everyday
- hs=hm+-hcd+-hcv+-hr-he
- hs-total heat stored in an organism
- hm- gained via metabolim
- hcd-gained/lost via conductiom
- hcv-gained/lost via convection
- hr-gained/lost via electromagnetic radiation
- he-lost via evaporation
temperature regulation in plants
formula

some cant do certain virtues religiously everyday
temeperature regulation in plants
whats a benefit to having lighter leaves

have higher reflection that dissipates heat by hr
temperature regulation in plants
vertically oriented plants have what advantage

dissipate heat by hr
temperature regulation by plants
dissipating heat by he is effected when

when there is sufficient water
temperature regulation in plants
convection

open growth forms have more exposure to wind and more energy lost
temperature regulation in plants
what does cushion growth intercept, gain

hr and hcd
temperature regulation by ectothermic animals
formula and what they can do for each
- hs=hcd+-hcv+-hr-he
- hcd-stilting, basking in the sun
- hcv-stilting increases wind exposure
- hr-basking, seeking shade, burrowing, variation in body color
- he-evaporation not an important pathway of heat dissipation for ectoderms
temperature regulation for endothermic animals
formula

hs=hm+-hcd+-hcv+-hr-he
temperate regulation by endothermic animals
what is especially important for endothermic animals

heat gained or lost frlm metabolism
temperature regulation for endothermic animals
what is the thermal neutral zone

the range of environmental temperature over which the metabolic rate of homeothermic animals does not change.

Author

misskatrina99

237691

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Ch 5

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Ch 5

Updated

9/29/2013, 9:19:20 PM

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