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Assessing intraspecific phenological synchrony in zoochorous trees from the monsoon forests of northern Australia

Franklin, Donald C. and Bach, Christine S. (2006). Assessing intraspecific phenological synchrony in zoochorous trees from the monsoon forests of northern Australia. Journal of Tropical Ecology,22(4):419-429.

Document type: Journal Article
Citation counts: Scopus Citation Count Cited 3 times in Scopus Article | Citations

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IRMA ID 73283902xPUB57
Title Assessing intraspecific phenological synchrony in zoochorous trees from the monsoon forests of northern Australia
Author Franklin, Donald C.
Bach, Christine S.
Journal Name Journal of Tropical Ecology
Publication Date 2006
Volume Number 22
Issue Number 4
ISSN 0266-4674   (check CDU catalogue open catalogue search in new window)
Scopus ID 2-s2.0-33745905291
Start Page 419
End Page 429
Total Pages 11
Place of Publication Cambridge, U.K
Publisher Cambridge University Press
Field of Research 0501 - Ecological Applications
0602 - Ecology
HERDC Category C1 - Journal Article (DEST)
Abstract Intraspecific synchrony in the phenology of tropical forest trees has implications for satiation of browsers and seed predators. pollination, dispersal and interpreting plant responses to environmental cues and stresses. Community phenological studies have been constrained in their consideration of these issues by the lack of concise quantitative measures of intraspecific synchrony. We propose a novel application of Colwell's predictability indices to overcome this deficiency. Its application is demonstrated by evaluating the leaf and reproductive phenologies of 8-16 individuals of each of 2 0 monsoon forest tree species from northern Australia monthly for 3 0 mo. The indices yielded substantial additional information over that provided by summaries averaged amongst conspecifics. Marked intraspecific asynchronies in leaf flush or flowering occurred in five evergreen species and two deciduous fig species, and were associated with prolonged individual commitments to these states. Five partly deciduous species exhibited marked intraspecific variation in the seasonal extent of leaf loss. We interpret the observed variation in intraspecific synchrony in terms of contrasting water-use and pollination strategies. The synchronicity indices are concise and robust to small and variable sample sizes. and may thus enhance studies of species-rich assemblages.
Keywords ficus
intraspecific asynchrony
leaf flush
moisture limitation
tropical deciduous forest
leaf phenology
seed production
dry season
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