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  3. Hyperdominance And Rarity In Amazonian Secondary Forests.
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  3. Hyperdominance And Rarity In Amazonian Secondary Forests.

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Hyperdominance and Rarity in Amazonian Secondary Forests.

Fernando Elias1, Joice Ferreira2, Erika Berenguer3,4

  • 1Botany Coordination, LEAF, Museu Paraense Emílio Goeldi, Belém, Pará, Brazil.

Global Change Biology
|June 16, 2026

View abstract on PubMed

Summary
This summary is machine-generated.

A few tree species dominate Amazonian secondary forests, controlling abundance and carbon storage. Understanding these hyperdominant species is key for forest restoration and management strategies.

Keywords:
AmazonAmazôniaSucessão ecológicaarmazenamento de carbonocarbon storageecologia da restauraçãoecological successionflorestas secundáriashiperdominânciahyperdominancenatural regenerationregeneração naturalrestoration ecologysecondary forests

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Area of Science:

  • Ecology
  • Forest Science
  • Tropical Biology

Background:

  • Undisturbed Amazonian forests exhibit dominance by a few tree species in abundance and carbon storage.
  • This pattern of species dominance in regrowing (secondary) forests after deforestation is not well understood.
  • Identifying dominant species in secondary forests is crucial for understanding ecosystem function and guiding restoration.

Purpose of the Study:

  • To assess hyperdominance in tree and palm abundance and carbon storage during secondary forest recovery.
  • To compare unweighted and plot-weighted approaches for analyzing dominance patterns.
  • To identify consistent hyperdominant species across different regions and successional stages in the eastern Amazon.

Main Methods:

  • Utilized data from 102 plots across four eastern Amazonian regions.
  • Applied both unweighted and novel plot-weighted methods to analyze species abundance and carbon storage.
  • Examined dominance patterns across various successional stages and stem size classes (including diameter at breast height ≥ 10 cm).

    • Main Results:

    • Secondary forests exhibit high hyperdominance, with 3%-6% of species accounting for over 50% of abundance and carbon storage.
    • A consistent core of hyperdominant species (e.g., Annona exsucca, Cecropia palmata) was identified across regions and successional stages.
    • Larger-stemmed hyperdominant species (≥ 10 cm DBH) had lower wood density than non-hyperdominant species, indicating distinct ecological strategies.

    Conclusions:

    • Secondary forest ecosystems are largely structured and function by a limited set of hyperdominant species.
    • These findings provide a framework for future research, including ecophysiology and remote sensing of canopy traits.
    • The identification of key species can inform effective forest restoration and management planning in the Amazon.