BIOL 2060 Lecture Notes - Lecture 4: Cornu Aspersum, Drug Tolerance
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What cli(cid:373)ate a species occurs i(cid:374) depe(cid:374)ds o(cid:374) that species" physiological tolera(cid:374)ce: s(cid:198)limit of temperature that, that organism can survive, physiological tolerance is estimated using performance curves (also called activity curves. Thermal performance curves for boreal moss and desert shrub: desert plants have optimal photosynthetic performance at a higher temperature than boreal forest plants. The temperature at which performance is optimal reflects the climate in which each species occurs. Distinguishing between adaptation and acclimation to the physical environment using common garden experiments: rear organisms from differe(cid:374)t populatio(cid:374)s or species i(cid:374) a co(cid:373)(cid:373)o(cid:374) e(cid:374)viro(cid:374)(cid:373)e(cid:374)t (cid:894)aka (cid:862)co(cid:373)(cid:373)o(cid:374) garde(cid:374)(cid:863)(cid:895, estimate their performance curves. If organisms still have different performance curves when reared in a common environment, then conclude that differences in curves are the result of adaptation. If differences in performance curves are not maintained in a common environment, then conclude that differences in curves are the result of acclimation.