Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/27321
Appears in Collections:Biological and Environmental Sciences Journal Articles
Peer Review Status: Refereed
Title: Annual cycles are the most common reproductive strategy in African tropical tree communities
Author(s): Adamescu, Gabriela S
Plumptre, Andrew J
Abernethy, Katharine A
Polansky, Leo
Bush, Emma R
Chapman, Colin A
Shoo, Luke P
Fayolle, Adeline
Janmaat, Karline R L
Robbins, Martha M
Ndangalasi, Henry J
Cordeiro, Norbert J
Gilby, Ian C
Jeffery, Kathryn
White, Lee
Contact Email: k.a.abernethy@stir.ac.uk
Keywords: Africa
annual cycles
flowers
fruits
phenology
seasonality
tropical forest
Issue Date: 31-May-2018
Citation: Adamescu GS, Plumptre AJ, Abernethy KA, Polansky L, Bush ER, Chapman CA, Shoo LP, Fayolle A, Janmaat KRL, Robbins MM, Ndangalasi HJ, Cordeiro NJ, Gilby IC, Jeffery K & White L (2018) Annual cycles are the most common reproductive strategy in African tropical tree communities, Biotropica, 50 (3), pp. 418-430. https://doi.org/10.1111/btp.12561.
Abstract: Abstract We present the first cross‐continental comparison of the flowering and fruiting phenology of tropical forests across Africa. Flowering events of 5446 trees from 196 species across 12 sites and fruiting events of 4595 trees from 191 species across 11 sites were monitored over periods of 6 to 29 years and analyzed to describe phenology at the continental level. To study phenology, we used Fourier analysis to identify the dominant cycles of flowering and fruiting for each individual tree and we identified the time of year African trees bloom and bear fruit and their relationship to local seasonality. Reproductive strategies were diverse, and no single regular cycle was found in >50% of individuals across all 12 sites. Additionally, we found annual flowering and fruiting cycles to be the most common. Sub‐annual cycles were the next most common for flowering, whereas supra‐annual patterns were the next most common for fruiting. We also identify variation in different subsets of species, with species exhibiting mainly annual cycles most common in West and West Central African tropical forests, while more species at sites in East Central and East African forests showed cycles ranging from sub‐annual to supra‐annual. Despite many trees showing strong seasonality, at most sites some flowering and fruiting occurred all year round. Environmental factors with annual cycles are likely to be important drivers of seasonal periodicity in trees across Africa, but proximate triggers are unlikely to be constant across the continent.
DOI Link: 10.1111/btp.12561
Rights: This item has been embargoed for a period. During the embargo please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study. This is the peer reviewed version of the following article: Adamescu GS, Plumptre AJ, Abernethy KA, Polansky L, Bush ER, Chapman CA, Shoo LP, Fayolle A, Janmaat KRL, Robbins MM, Ndangalasi HJ, Cordeiro NJ, Gilby IC, Jeffery K & White L Annual cycles are the most common reproductive strategy in African tropical tree communities, Biotropica, 50, pp. 418-430, which has been published in final form at https://doi.org/10.1111/btp.12561. This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.
Notes: Additional co-authors: Roman M. Wittig, Thomas Breuer, Mireille Breuer‐Ndoundou Hockemba, Crickette M. Sanz, David B. Morgan, Anne E. Pusey, Badru Mugerwa, Baraka Gilagiza, Caroline Tutin, Corneille E. N. Ewango, Douglas Sheil, Edmond Dimoto, Fidèle Baya, Flort Bujo, Fredrick Ssali, Jean‐Thoussaint Dikangadissi, Kim Valenta, Michel Masozera, Michael L. Wilson, Robert Bitariho, Sydney T. Ndolo Ebika, Sylvie Gourlet‐Fleury, Felix Mulindahabi, Colin M. Beale

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