EPSC 181 Lecture Notes - Lecture 12: Capelin, Chlorophyll, Overfishing
6 Nov 2018
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Document Summary
Because of the drop, canada wanted to control the access to cod. Wasn"t just overfishing of the cod, but also capelin, which is the preferred prey of the cod. Regime shift: invertebrates have taken over the cod"s (and the food fish for the cod) role in the food chain. Continued fishing for big cod and cod taken due to bycatch. The first collapse was due to other countries, but after canada took control, the second collapse was because of canada. Deciduous plants lose their leaves because it"s a disadvantage in times of water shortage, it doesn"t need so much of the sun. Light isn"t the only factor, it doesn"t need the extra light. By throwing away the most abundant light, it can manage everything else. It absorbed green and reflected red and blue. Chlorophyll can use light more efficiently, when it was able to use it, it took over. The distance between branches is a measure of genetic dissimilarity.
