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Spatiotemporal strategies that facilitate recruitment in a habitat specialist tree species

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ABSTRACT

Species restricted to specialized, rare habitats such as Myristica fatua cannot afford to send propagules too far and risk arriving in inhospitable habitats. We followed the fate of seeds from fruiting till seedling establishment to examine ecological strategies such species employ to escape from seed predators and find the right germination sites. We found that M. fatua bears few large-sized seeds and fruits for extended periods of time such that few seeds are produced at any point of time, thus escaping detection of seed predators. Hornbills and crabs facilitate this by dispersing heavy seeds only to short distances within swamps.

No MeSH data available.


Number of seeds dispersed via frugivores and those passively detached from M. fatua trees over the fruiting months (28 May to 31 September, 2013). The error bars indicate SE values. Inset shows an aril-intact seed (non-dispersed) and an aril-removed (dispersed) seed.
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plw033-F1: Number of seeds dispersed via frugivores and those passively detached from M. fatua trees over the fruiting months (28 May to 31 September, 2013). The error bars indicate SE values. Inset shows an aril-intact seed (non-dispersed) and an aril-removed (dispersed) seed.

Mentions: Capsules are large, hard and dehisce partially while still attached to the tree exposing the bright reddish-orange aril that covers a single large oblong seed (Fig. 1). Seeds that fell on the ground arrived there via two routes: (i) dispersal by frugivores that consumed the aril and dropped seeds intact (henceforth dispersed seeds), and (ii) seeds with intact arils that detached passively upon maturity (henceforth non-dispersed seeds; Fig. 1).Figure 1.


Spatiotemporal strategies that facilitate recruitment in a habitat specialist tree species
Number of seeds dispersed via frugivores and those passively detached from M. fatua trees over the fruiting months (28 May to 31 September, 2013). The error bars indicate SE values. Inset shows an aril-intact seed (non-dispersed) and an aril-removed (dispersed) seed.
© Copyright Policy - creative-commons
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4940510&req=5

plw033-F1: Number of seeds dispersed via frugivores and those passively detached from M. fatua trees over the fruiting months (28 May to 31 September, 2013). The error bars indicate SE values. Inset shows an aril-intact seed (non-dispersed) and an aril-removed (dispersed) seed.
Mentions: Capsules are large, hard and dehisce partially while still attached to the tree exposing the bright reddish-orange aril that covers a single large oblong seed (Fig. 1). Seeds that fell on the ground arrived there via two routes: (i) dispersal by frugivores that consumed the aril and dropped seeds intact (henceforth dispersed seeds), and (ii) seeds with intact arils that detached passively upon maturity (henceforth non-dispersed seeds; Fig. 1).Figure 1.

View Article: PubMed Central - PubMed

ABSTRACT

Species restricted to specialized, rare habitats such as Myristica fatua cannot afford to send propagules too far and risk arriving in inhospitable habitats. We followed the fate of seeds from fruiting till seedling establishment to examine ecological strategies such species employ to escape from seed predators and find the right germination sites. We found that M. fatua bears few large-sized seeds and fruits for extended periods of time such that few seeds are produced at any point of time, thus escaping detection of seed predators. Hornbills and crabs facilitate this by dispersing heavy seeds only to short distances within swamps.

No MeSH data available.