BIO SCI E182 Lecture : Lec 2
2 Mar 2014
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Document Summary
Read the abstract, introduction, and conclusion, and results. He"ll tell us which scientific names to memorize. Fig 5. 6: the similarities between these communities of california and med basin is chile. Plant adaptations in mediterranean climates specialized leaves (drought-resistant: annuals (life cycle is yearly) Black safe: seasonally recurl leaves to avoid water loss. Prickly pear cactus: more prominent down south. Strategies plants use to avoid the summer drought in mte"s: annuals are dead during the dry season and bloom during the wet season. Soil nutrients: chile and the med basin have very rich soils, south africa and australia have poor soils. Serotiny: closed seed structure that opens in the presence of heat and then seeds are dispersed. Basin perennial exotic roots 5 foot deep problems because they displace the native community. About 1/3 of the species are non-native species. California demographic future 1997 vs. 2020: the broader the base = the more rapid its growing.
