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Sept,24th,2013.docx

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Department
Biology
Course Code
BIOLOGY 2F03
Professor
Dr

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Sept,24 ,2013 – bio 2fo3 Habitat differences -first bar in grph refers to air temperature Smaller bar shows shallow riffle and the biggest ... - differences in temrpatre that habitats experience in the river - the reason is because of Riffle: heat with air Question: how does stream temp affect Chinock salmon Wuestion: can organisms optimize their physiology and growth for the typical range of temperatures - wehen we go on vactio nwe suffer alot -buthoe that live there don’t Specific adaitons  Diffefent plants perfom diffently  Good comparison and photsynthic rate of 2 plants  One plant is boreal moss is northern must  Dersert shrub  As you incfrase temp the broal moss can photosynthesize and grow  Desert shrub has mitminze 15 degress, as it goes up, photsynteis goes up and then it shrub dies at 50 degrees Optima sihift wher you are expected to live There will be bacgteria to live at like 80 dgrees and some may live and reproduce in 0 degrees and can do negatie if ther is pressure Acclimation  Respone of indivuals species to exposure in development or some point of life  We also can switch between different temprtrus and optimize our perforamcde  Easy exper we cna do is to cutting of palnt so like desert shrub and grow it in diff temp  Look at rate of photsyntheiss  Plant that grow at cold changer ,  Differences is 8 * C Thermal regulation: maint erms  Metabolic hat—combustion in body  Radiation hat—when your radiant , so like sitting infront of ire, we radiate as well , radition is not visible and is long waves ,  Evaporation--- stealing of fluid then goews into air Body temp  Poiklothermss ---Don’t want ot be in too hot or to ocold enviornemtns , can affect body temp, so can change colour ,  Grass hoppers exp cold , hav pigment in skin to precoess slower solar energy ,  Indivuals can rapidly regulate temp  Become darker, they heat up faser so the ycan , don’t have the obp Hairs  Many creatures / plants have hairs  Plants not to warm it up, to reflect hte sun , to reduce heating  Waxes: difffernt external materials that serve to cover tissue , to prevent water loss, and atomatcally recues cooling and evaprotinn  Antifreezes—deals with temp,  Clustering – hugging together , snakes do it  They generate some body heat  Bees stay warm during winter , warm enough not to freeze Behavioural methods  Have ability to influence  Impat on body temp  Air temp i blue  Green is area , grasshoppers have acess to light , orange red area is body temp of grasshoppers
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