GEO 106 Lecture Notes - Lecture 14: Prince William Sound, Bonanza Creek, Permafrost
3 Dec 2017
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Need to have the average level of production. A variation in this level may indicate a problem. Question is what is the critical low point (recovery threshold) Natural swings in population and system dynamics or. Bad thing about fertilizer is you put extra on your land (cid:449)he(cid:374) (cid:455)ou k(cid:374)o(cid:449) it(cid:859)s goi(cid:374)g to rai(cid:374) . We should have a count of populations (species and within species) Populations do vary naturally but if the number of species is dropping then even though the functions are continuing, the system is probably under stress (looks normal but is not) Dangerous with a simpler system (arctic) as could quickly lose a function. E(cid:454)a(cid:373)ple i(cid:374) ur(cid:271)a(cid:374)izatio(cid:374), the proliferatio(cid:374) of gulls, ra(cid:272)(cid:272)oo(cid:374)s, hor(cid:374)ets, (cid:272)ertai(cid:374) (cid:858)(cid:449)eeds(cid:859) Current statistics indicate that 16 times more raccoons or skunks live in urban areas as compared to the same size rural area (mississauga) Expect ecosystem to change and in an orderly, predictable pattern. Reversal or change to the pattern means a problem.
