Plant-animal interactions and fruit production in a neotropical herb

a path analysis

D. W. Schemske, Carol C Horvitz

Research output: Contribution to journalArticle

139 Citations (Scopus)

Abstract

Used path analysis to estimate the direct and indirect effects of antguards, an ant-tended herbivore, and pollinators, on flower and fruit production in Calathea ovandensis (Marantaceae), a neotropical herb. Natural variation in these plant-animal interactions was quantified for individual plants in Veracruz, Mexico. Antguards had a positive direct effect on flower number and, because of the positive effect on flower number on fruit number, had a positive indirect effect on mature fruit number. The herbivore had a negative direct effect on flower number and mature fruit number. The composition of the pollinator community was very different in 2 study years, with a marked increase in the number of visits by efficient pollinators in 1985. This change was reflected in between-year differences in the effects of pollinators on number of initiated fruits. In 1984, pollinators had no significant effect on initiated fruit number, while the 2 pollinators that increased in abundance in 1985 had significant effects on initiated fruit number in that year. -from Authors

Original languageEnglish
Pages (from-to)1128-1137
Number of pages10
JournalEcology
Volume69
Issue number4
StatePublished - Dec 1 1988
Externally publishedYes

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path analysis
fruit production
pollinators
herb
herbs
pollinator
fruits
fruit
animal
flowers
animals
flower
herbivores
Calathea
Marantaceae
herbivore
effect
Formicidae
Mexico
ant

ASJC Scopus subject areas

  • Ecology

Cite this

Plant-animal interactions and fruit production in a neotropical herb : a path analysis. / Schemske, D. W.; Horvitz, Carol C.

In: Ecology, Vol. 69, No. 4, 01.12.1988, p. 1128-1137.

Research output: Contribution to journalArticle

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