ArticleAmerican journal of botany2026
A mosaic of colors: The influence of biotic and abiotic factors shaping flower color diversity across a tropical mountain ecosystem.
Article in American journal of botany, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Decoupled accumulation of chlorophylls and total carotenoids between floral and vegetative organs in Dendrobium.BMC plant biology · 2026Article
- Paradigm shifts in flower color: An introduction.American journal of botany · 2026Article
- A mosaic of colors: The influence of biotic and abiotic factors shaping flower color diversity across a tropical mountain ecosystem.American journal of botany · 2026Article
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Authors and funding
5 authors.
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Abstract
premiseFlower color diversity within communities is shaped by biotic and abiotic factors. Pollinators often prefer specific colors, and floral pigments also help protect against abiotic factors such as ultraviolet (UV) radiation, precipitation, and temperature. Along altitudinal gradients, variations in biotic and/or abiotic conditions can drive the spatial distribution of flower color diversity at the community level.
methodsAcross five vegetation types in the Brazilian campo rupestre, a highly diverse tropical mountain grassland with an environmental mosaic of vegetation types, we surveyed floral color traits of 179 plant species from 180 plots distributed along an altitudinal gradient (808-1427 m). We related flower color traits to pollination systems, abiotic factors (soil type, temperature, and precipitation), and elevation to investigate their influence on flower color diversity.
resultsAn association between flower colors and pollination systems was coupled with a functional divergence of color traits along the environmental mosaic, indicating that both, biotic and abiotic factors, shape color diversity in the campo rupestre. Despite this functional divergence, flower color diversity levels were similar across vegetation types and decreased slightly with elevation. Such maintenance of functional diversity contrasts with the sharp reductions in color diversity observed with elevation in temperate mountains.
conclusionsOur results indicate that flower color diversity is maintained across environmental gradients when pollination systems are unconstrained by elevation, a characteristic of old tropical mountain systems.
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