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April 30, 2014 00:21
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Document Title: The rate of adaptation in a changing environment | |
Document Abstract: Global warming is a major threat to biodiversity that goes beyond precedent. Historically, many species survived by shifting their range, but now human-induced habitat loss and fragmentation commonly restricts range shifts, forcing species to adapt in situ or face extinction. Simulations, using a model integrating population dynamics, mutation, environmental variance, and genetic change, examine the relationship between maximum phenotypic and genetic rates of change. Not surprisingly, small populations of range-bound species (103 or less) will be severely limited in their long-term response to very rapid climate change; however, linked populations can adapt effectively if gene flow between neighboring reserves is adequate. | |
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LDA: | |
Topic probability mixture: [(1, 0.17777699974199171), (8, 0.53028986267597322), (13, 0.082995289717649731), (14, 0.11302491942000358)] | |
Maximally probable topic LDA: topic #8 | |
Topic words: 0.004*population/NN + 0.004*gene/NN + 0.004*selection/NN + 0.004*species/NN + 0.004*trait/NN + 0.003*genetic/JJ + 0.003*host/NN + 0.003*genome/NN + 0.003*model/NN + 0.003*evolution/NN | |
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LSI: | |
Topic probability mixture: [(0, 0.19095872453284773), (1, -0.029421180336698931), (2, -0.033784489196095349), (3, 0.079273934728420065), (4, -0.050618139121001736), (5, -0.053609953630495602), (6, -0.047147854711587896), (7, 0.042336783810746237), (8, 0.10108371064019277), (9, 0.026514890601087374), (10, 0.01315336253307409), (11, -0.025262887847362792), (12, 0.041834106537507486), (13, -0.028811587271448429), (14, 0.039479328911613716), (15, 0.097007021341476915), (16, -0.046006412540476958), (17, -0.034557663936889929), (18, 0.068708019902468276), (19, 0.029343571775927196)] | |
Maximally probable topic LSI: topic #0 | |
Topic words: 0.141*"population/NN" + 0.132*"gene/NN" + 0.128*"selection/NN" + 0.114*"trait/NN" + 0.109*"species/NN" + 0.101*"genetic/JJ" + 0.096*"sexual/JJ" + 0.093*"genome/NN" + 0.093*"divergence/NN" + 0.090*"host/NN" | |
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