Two new species of Otoba (Myristicaceae) from Colombia

Santamaría-Aguilar, Daniel; Lagomarsino, Laura P.

doi:10.3897/phytokeys.178.64564

Cited by 2 publications

(1 citation statement)

References 27 publications

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“…Sequence capture success was variable; half of the 20 samples recovered fewer than 10 loci, and only 3 samples recovered more than 100 (Appendix S4). Due to large amounts of missing data in both nuclear and chloroplast regions, the following samples were excluded from all phylogenetic analyses: O. gracilipes _DC884, O. novogranatensis _EB500, O. parvifolia _DN9151, O. vespertilio , and two recently described species (Santamaría‐Aguilar & Lagomarsino, 2021) (i.e. O. sp.…”

Section: Resultsmentioning

confidence: 99%

Neotropical niche evolution of Otoba trees in the context of global biogeography of the nutmeg family

Frost

Santamaría-Aguilar

Singletary

et al. 2021

Journal of Biogeography

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Aim Plant distributions are influenced by species’ ability to colonize new areas via long‐distance dispersal and propensity to adapt to new environments via niche evolution. We use otobas, a clade of ecologically dominant trees found in low‐to mid‐elevation wet forests, as a system to understand the relative importance of these processes within the Neotropics. Location Neotropics and global. Taxon Otoba and entire Myristicaceae. Methods We resolve the first phylogeny of Otoba the Angiosperms353 loci and plastome sequences from 13 accessions representing seven species. We pair this with the most densely sampled phylogeny of Myristicaceae to date, inferred using publicly available plastid data. We then use environmental niche modelling, biogeographical reconstruction, phylogenetic principle components analysis and Ornstein–Uhlenbeck models to infer biogeography and examine patterns of niche evolution. Results Myristicaceae has an Old World origin, with a single expansion into the Americas. Divergence dates, fossil evidence and a notable lack of long‐distance dispersal are consistent with a Boreotropical origin of Neotropical Myristicaceae. Mirroring the rarity of dispersal at the family level, Otoba's biogeography is marked by few biogeographical events: two expansions into Central America from a South American ancestor and a single dispersal event across the Andes. This limited movement contrasts with rapid climatic niche evolution, typically occurring across geographically proximate habitats. Main conclusion Contrasting with previous studies, long‐distance dispersal does not need to be invoked to explain the pantropical distribution of Myristicaceae, nor the biogeography of Otoba. This likely results from the family's relatively large seeds that are dispersed by large‐bodied vertebrates. Instead, rapid niche evolution in Otoba has facilitated its occurrence throughout mesic habitats of the northern Neotropics, including the Amazon rainforest and Andean montane forests. Otoba adds to a growing group of Neotropical plant clades in which climate adaptation following local migration is common, implying an important role of niche evolution in the assembly of the Neotropical flora.

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Section: Resultsmentioning

confidence: 99%

Neotropical niche evolution of Otoba trees in the context of global biogeography of the nutmeg family

Frost

Santamaría-Aguilar

Singletary

et al. 2021

Journal of Biogeography

Self Cite

View full text Add to dashboard Cite

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Vertebrate seed predation can limit recruitment of later‐successional species in tropical forest restoration

Joyce,

Ramos,

Zahawi

et al. 2024

Biotropica

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The effects of vertebrate seed predation on the regeneration of restored forests are not well understood because most past studies have focused on seed predation within the first few years after restoration and have measured seed removal without quantifying subsequent seedling establishment of seeds that avoid predation. Quantifying the establishment of seeds that escape predation in restored forests at later stages of regrowth is crucial for anticipating longer‐term recovery trajectories. Here, we evaluated the potential role of vertebrate seed predators in limiting recruitment of later‐successional tree species in nine forests actively restored ≥15 years prior and in four paired remnant forest fragments embedded in an agricultural landscape in southern Costa Rica. We conducted seed addition experiments with four tree species inside and outside vertebrate exclosures and used camera trapping to detect seed predators. To determine the fate of seeds that avoided predation, we also measured seedling establishment after 1 year, given that other mortality factors may compensate in the absence of vertebrate seed predation. We detected two species of birds and five species of granivorous mammals removing seeds. Seed tagging indicated that most removal resulted in predation. For three of the four tree species tested, vertebrate seed predation reduced seedling establishment. The magnitude of this effect depended on species' susceptibility to other causes of mortality during the seed‐to‐seedling transition. Our study demonstrates that vertebrate seed predators can substantially reduce later‐successional seedling recruitment in restored forests and should be considered alongside dispersal limitation and microsite conditions as factors slowing forest recovery.Abstract in Spanish is available with online material.

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Two new species of Otoba (Myristicaceae) from Colombia

Cited by 2 publications

References 27 publications

Neotropical niche evolution of Otoba trees in the context of global biogeography of the nutmeg family

Neotropical niche evolution of Otoba trees in the context of global biogeography of the nutmeg family

Vertebrate seed predation can limit recruitment of later‐successional species in tropical forest restoration

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