Fruit production is influenced by tree size and size-asymmetric crowding in a wet tropical forest

Ecology and Evolution
David M Minor, Richard K Kobe

Abstract

In tropical forest communities, seedling recruitment can be limited by the number of fruit produced by adults. Fruit production tends to be highly unequal among trees of the same species, which may be due to environmental factors. We observed fruit production for ~2,000 trees of 17 species across 3 years in a wet tropical forest in Costa Rica. Fruit production was modeled as a function of tree size, nutrient availability, and neighborhood crowding. Following model selection, tree size and neighborhood crowding predicted both the probability of reproduction and the number of fruit produced. Nutrient availability only predicted only the probability of reproduction. In all species, larger trees were more likely to be reproductive and produce more fruit. In addition, number of fruit was strongly negatively related to presence of larger neighboring trees in 13 species; presence of all neighboring trees had a weak-to-moderate negative influence on reproductive status in 16 species. Among various metrics of soil nutrient availability, only sum of base cations was positively associated with reproductive status, and for only four species. Synthesis Overall, these results suggest that direct influences on fruit production tend to be medi...Continue Reading

References

May 23, 2006·Ecological Applications : a Publication of the Ecological Society of America·Charles D CanhamMark J Twery
Sep 2, 2006·Oecologia·Janice M Lord, Mark Westoby
Nov 17, 2006·Molecular Ecology·Santiago C González-MartínezRicardo Alía
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Sep 17, 2013·The New Phytologist·Mariah S CarboneAndrew D Richardson

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Citations

Jan 18, 2020·Global Change Biology·Mario B PesendorferMarcos Fernández-Martínez
Feb 25, 2021·Nature Communications·James S ClarkRoman Zlotin
Aug 15, 2021·Scientific Reports·Sarah FischerJane A Catford
Aug 18, 2021·Proceedings of the National Academy of Sciences of the United States of America·Tong QiuJames S Clark

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Software Mentioned

RMulti
R package yaImpute
WinBUGS
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