GEO 702 Lecture Notes - Lecture 12: The Maritimes, Ecotourism, Biomagnification
2 Nov 2016
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No doubt the system is in trouble. Academic theory seemingly backed up by the facts of real life. New bare subtrate -> colonizing stage -> successions stage -> climax stage. Change is normal and self created (successions stage) Therefore, changes created by humans difficult to isolate. Pcbss are groups of organic compounds that are soluble in fat, not water, linked to cancers. From graph: lake ontario, erie, huron, superior have concentrations of pcbs and. Evidence may have to be different than our normal expectations the fish does as well. In 2015 in st lawrence 60% is restricted to eat. I(cid:374) (cid:1005)8(cid:1009)(cid:1008), it took (cid:1005)(cid:1006)(cid:1004)(cid:1004) lo(cid:271)sters to fill a fishi(cid:374)g s(cid:373)a(cid:272)k"s well i(cid:374) chesapeake bay. By 1880 it took 8000 fisherman were finishing when the population was younger. The older, mature fish were not there anymore. Cod needs to be 6-7 years old to reproduce. If you catch it before that time they will not reproduce, and the population will decline.
