10.5061/DRYAD.MS06B
Ingram, Travis
University of British Columbia
Harmon, Luke J.
University of Idaho
Shurin, Jonathan B.
University of California, San Diego
Data from: When should we expect early bursts of trait evolution in
comparative data? Predictions from an evolutionary food web model
Dryad
dataset
2012
Brownian motion
evolutionary assembly model
Ornstein-Uhlenbeck model
early burst model
2012-06-19T18:15:30Z
2012-06-19T18:15:30Z
en
https://doi.org/10.1111/j.1420-9101.2012.02566.x
50603 bytes
1
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Conceptual models of adaptive radiation predict that competitive
interactions among species will result in an early burst of speciation and
trait evolution followed by a slowdown in diversification rates. Empirical
studies often show early accumulation of lineages in phylogenetic trees,
but usually fail to detect early bursts of phenotypic evolution. We use an
evolutionary simulation model to assemble food webs through adaptive
radiation, and examine patterns in the resulting phylogenetic trees and
species' traits (body size and trophic position). We find that when
foraging trade-offs result in food webs where all species occupy integer
trophic levels, lineage diversity and trait disparity are concentrated
early in the tree, consistent with the early burst model. In contrast, in
food webs in which many omnivorous species feeding at multiple trophic
levels, high levels of turnover of species' identities and traits
tends to eliminate the early burst signal. These results suggest testable
predictions about how the niche structure of ecological communities may be
reflected by macroevolutionary patterns.
simulation_dataParameter values and summary data for each of the 240 food
webs simulated using the evolutionary assembly model and analyzed in the
present paper and in Ingram et al. (2009).