Plant Ecology

, Volume 216, Issue 7, pp 963–974 | Cite as

Costs and benefits of reproducing under unfavorable conditions: an integrated view of ecological and physiological constraints in a cerrado shrub

  • Fernando A. O. SilveiraEmail author
  • Jean C. Santos
  • Edivani V. Franceschinelli
  • Leonor Patrícia C. Morellato
  • G. Wilson Fernandes


Disentangling the relative importance of biotic and abiotic constraints in plant reproduction is a major challenge in reproductive ecology. Here, we tested the ‘resource limitation hypothesis’ that predicts a high-level ovule abortion under resource scarcity; the ‘flowering displacement hypothesis’ that predicts low levels of pollen limitation driven by relaxed competition for pollinators; and the ‘herbivory escape hypothesis’ that predicts low impact by natural enemies during unfavorable conditions. We followed reproductive phenology, measured the seasonal variation in resource abundance, and calculated initial ovule budgets to estimate the relative importance of each limiting factor on final reproductive output. Ovule fate was determined of ovules in different positions within the pods, and a germination experiment was conducted to identify bottlenecks at the germination stage. Despite marked decreases in resource availability during the dry season, reproduction consistently occurred during mid-to-late dry season. Destruction by natural enemies and abortion were the most likely ovule fates, with only 2.2 % of flower buds converted into ripe fruits. Ovule fates were not random along fruit positions, with higher likelihood of well-formed seeds in fruit tips and higher likelihood of ovule abortion and non-fertilized ovules near the fruit bases. The benefits derived from flowering displacement to the dry season include reduced competition for pollinators and synchronization of seedling establishment with the onset of the rainy season. However, we found no support for the herbivory escape hypothesis. We argue that a cost–benefit approach is a useful framework to understand the evolutionary ecology of phenological strategies in seasonal environments.


Cerrado Ovule fate Phenology Pollen limitation Pre-dispersal seed predation Resource limitation 



The authors thank M. Quesada, A. L. Teixido, J.P. Lemos-Filho, E.A. Fischer, and J. Olensen for suggestions on early versions of the manuscript. Two anonymous reviewers also provided criticism that improved manuscript quality. We thank ICMBIO for logistic support and INMET for providing the climatic data. Financial support was provided by CNPq (486742/2012-1), and FAPEMIG. FAOS, LPCM, and GWF receive a research productivity fellowship from CNPq. This paper is part of the M.Sc. thesis of FAOS in the Graduate Program of Plant Biology at UFMG.

Conflict of interest

The authors declare that they have no conflict of interest.

Supplementary material

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Supplementary material 2 (DOCX 13 kb)


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Copyright information

© Springer Science+Business Media Dordrecht 2015

Authors and Affiliations

  • Fernando A. O. Silveira
    • 1
    Email author
  • Jean C. Santos
    • 2
  • Edivani V. Franceschinelli
    • 3
  • Leonor Patrícia C. Morellato
    • 4
  • G. Wilson Fernandes
    • 5
    • 6
  1. 1.Departamento de Botânica, Instituto de Ciências BiológicasUniversidade Federal de Minas GeraisBelo HorizonteBrazil
  2. 2.Instituto de BiologiaUniversidade Federal de UberlândiaUberlândiaBrazil
  3. 3.Departamento de BotânicaUniversidade Federal de GoiásGoiâniaBrazil
  4. 4.Departamento de Botânica, Instituto de BiociênciasUNESP Univ Estadual PaulistaRia ClaroBrazil
  5. 5.Ecologia Evolutiva & BiodiversidadeUniversidade Federal de Minas GeraisBelo HorizonteBrazil
  6. 6.Department of BiologyStanford UniversityStanfordUSA

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