Data from: Hard and soft selection on phenology through seasonal shifts in the general and social environments: a study on plant emergence time
| Main Authors: | Weis, Arthur E., Turner, Kyle M., Petro, Bergita, Austen, Emily J., Wadgymar, Susana M. |
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| Format: | info dataset Journal |
| Terbitan: |
, 2015
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/4951107 |
Daftar Isi:
- The timing of transition out of one life history phase determines where in the seasonal succession of environments the next phase is spent. Shifts in the general environment (e.g., seasonal climate) affect the expected fitness for particular transition dates. Variation in transition date also leads to temporal variation in the social environment. For instance, early transition may confer a competitive advantage over later individuals. If so, the social environment will impose frequency- and density-dependent selection components. In effect, the general environment imposes hard selection while the social environment imposes soft selection on phenology. We examined hard and soft selection on seedling emergence time in an experiment on Brassica rapa. In monoculture (uniform social environment), early emergence results in up to a 1.5-fold increase in seed production. In bi-cultures (heterogeneous social environment), early-emerging plants capitalized on their head start, suppressing their late neighbors and increasing their fitness advantage to as much as 38-fold, depending on density. We devised a novel adaptation of contextual analysis to partition total selection (i.e., Cov(ω, z)) into the hard and soft components. Hard and soft components had similar strengths at low density, whereas soft selection was five times stronger than hard at high density.
- Experiment to estimate hard and soft selection on seedling emergence timeThe experiment explored the impact of the general environment (climate) and the social environment (density and frequency of alternate phenotypes) on the selective advantage of early seedling emergence. Two emergece phenotype, early and late, were generated by planting seeds on two dates weeks apart. File contains indentifiers, stem size, leaf size and final seed pod production data by desinty, frequency and individual phenotype classes.BASIC.DATA.Sep2104.txt