GEO 702 Lecture Notes - Lecture 8: Passenger Pigeon, Manifest Destiny, Conservation Movement
12 Oct 2016
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What changes this in favor of concern for the environment. By the late 1800s have empirical view, darwinism, malthus. At the same time have social commentators writing about poor living conditions i. e. dickens social consequence (easy to apply to environmental concerns) because people do(cid:374)"t read scholarly literature unless you put it in something popular. This is also a period of tremendous growth and therefore of environmental exploration. Ma(cid:272)do(cid:374)ald (cid:862)do(cid:272)tri(cid:374)e of useful(cid:374)ess(cid:863)- if it works, do it. Examples: o(cid:272)ea(cid:374) fish (cid:374)u(cid:373)(cid:271)ers o(cid:374) (cid:862)(cid:271)ri(cid:374)k of (cid:272)ollapse(cid:863) The amount o fish in the oceans has halved since 1970, some populations (tuna, mackerel) have fallen by 75% according to the study by wwf. Question is not about the process but about what humans are ding to the process - speed. Probably 99% of all species are now extinct. When all local populations are eliminated, they cannot be replaced with migration and the species dies out. Inability to adapt to new diseases o predators (ex.
