BIOL 3130 Lecture Notes - Lecture 3: Genetic Marker, Extinction Event, Flowering Plant
27 Oct 2017
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B. eco regions: old emphasis on species, new emphasis on species aggregations (broad-scale eco regions, assumption: captures multiple species, and the processes that maintain them. Many different ways that diversity can be defined and managed. More species than solutions with often limited demographic info. More species than solutions with often limited distributional info (e. g. whiteholes) The species classification challenge- classic vs. dna- based techniques, with their pros and cons. Finding ways to protect species and the mechanisms that maintain them (where births>deaths) While dealing with change (the five riders) Diversity the dynamic balance between speciation and extinction: massive extinction events have occurred before, extinctions tend to be followed by pulses in speciation, the frequency of extinction has gradually slowed with time. Massive extinction events: very rare: 5 times in 3 billion years. 2: triggered by, mass extinction (recovery=10 my, evolution of new life form and types of species interactions (ex.
