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Plant Life History. Terms. Life history terms: - r- selected vs K- selected - Early successional vs late successional - Annual, perennial, biennial (two forms, not always two years) Iteroparous (polycarpic) vs. semelparous (monocarpic) Shade tolerant, intermediate, intolerant
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Terms • Life history terms: • - r- selected vs K- selected • - Early successional vs late successional • - Annual, perennial, biennial (two forms, not always two years) • Iteroparous (polycarpic) vs. semelparous (monocarpic) • Shade tolerant, intermediate, intolerant • Deciduous vs. evergreen • Broadleaved vs. needle leaved • vernal herbs (spring wildflowers), summer green species, • late flowering species
8.1 Digitalis purpurea is a biennial—a short-lived monocarpic perennial
8.7 Grime’s triangular or C-S-R model • Grimes life history (ecological) classification
8.8 Grime’s characterizations of large groups of plants according to his C-S-R model
8.11 “Masting” Reproductive synchrony in Astragalus in 3 populations in Idaho and Montana (2)
Question: What are the seasonal patterns of species dominance and diversity in the herbaceous layer of an old-growth deciduous forest
Question: What are the seasonal patterns of species dominance and diversity in the herbaceous layer of an old-growth deciduous forest
Question: Does this species have a different phenology than native shrubs?
Native species Leaf development is much earlier.
Native species Leaf senescence is much later
Question: Is climate change altering seasonal patterns in the local flora?