SIO 132 Lecture 16: Latitudinal Diversity Gradient and Paleobiology
31 Aug 2018
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Interaction & community ecology: competition, predation, keystone predation, parasites & predator-prey interactions, keystone parasitism, food webs. Biogeography: biogeography--> [a standard definition] study of the distribution of species and ecosystems in geographic space and through (geological) time. Includes the definition of ecology- study of the distribution and abundance of organisms, including causes and consequences. On west atlantic the peak is caribbean hot spot, the southern drop is the amazon mudflats in south america: the a(cid:373)azo(cid:374) ri(cid:448)er is a (cid:373)ajor re(cid:373)o(cid:448)al of (cid:858)t(cid:455)pi(cid:272)al(cid:859) (cid:373)ari(cid:374)e ha(cid:271)itat, it (cid:271)lo(cid:272)ks the. Caribbean flora/fauna: despite influence of local geography, general latitudinal diversity gradient for benthos in. Atlantic: he combined data on all oceanic pelagic taxa- what benthic had compared to the pelagic taxa- no pronounced local effects of coastal process (upswelling, amazon. Ldg is a long-standing problem in ecology b/c we don"t know why: two general classes of explanation, broader historical / evolutionary factors (ex. - greater net rates of speciation in tropics)
