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ABIOTIC FACTORS (Temperature (among the most important determinants of…
ABIOTIC FACTORS
Temperature
among the most important determinants of species distribution
confine/limiting plants and animals distribution
control rate of internal and external processes
Homoiotherms/ homeotherms
body temperature constant
warm blooded animals (mainly birds and mammals)
automatic physiological mechanisms for keeping constant of body temperature
Water abundance and salinity
moisture
soil moisture
evaporation rate (humidity,temperature and wind)
vapor pressure
rate of water loss from the surface of an organisms depends on the difference of vapor pressure between the surface and the air
include exponentially with temperature
temperature of the organisms ↑ than the air, water loss will be ↑
water balance & salinity
in plant
Therophytes
Geophytes
Hemicryptophytes
Chamaephytes
Phanerophytes
Xerophytes
Mesophytes
Hydrophytes
Halophytes
in animals
Isotonic
Hypotonic
Hypertonic
Poikilotherms
cold blooded animals and plants
no internal physiological mechanisms
internal temperature varies along with that of the ambient environmental temperature
