The global abundance of tree palms

Robert Muscarella*, Thaise Emilio, Oliver L. Phillips, Simon L. Lewis, Ferry Slik, William J. Baker, Thomas L.P. Couvreur, Wolf L. Eiserhardt, Jens Christian Svenning, Kofi Affum-Baffoe, Shin Ichiro Aiba, Everton C. de Almeida, Samuel S. de Almeida, Edmar Almeida de Oliveira, Esteban Álvarez-Dávila, Luciana F. Alves, Carlos Mariano Alvez-Valles, Fabrício Alvim Carvalho, Fernando Alzate Guarin, Ana AndradeLuis E.O.C. Aragão, Alejandro Araujo Murakami, Luzmila Arroyo, Peter S. Ashton, Gerardo A.Aymard Corredor, Timothy R. Baker, Plinio Barbosa de Camargo, Jos Barlow, Jean François Bastin, Natacha Nssi Bengone, Erika Berenguer, Nicholas Berry, Lilian Blanc, Katrin Böhning-Gaese, Damien Bonal, Frans Bongers, Matt Bradford, Fabian Brambach, Francis Q. Brearley, Steven W. Brewer, Jose L.C. Camargo, David G. Campbell, Carolina V. Castilho, Wendeson Castro, Damien Catchpole, Carlos E. Cerón Martínez, Shengbin Chen, Phourin Chhang, Percival Cho, Eurídice N.Honorio Coronado

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

66 Citations (Scopus)

Abstract

Aim: Palms are an iconic, diverse and often abundant component of tropical ecosystems that provide many ecosystem services. Being monocots, tree palms are evolutionarily, morphologically and physiologically distinct from other trees, and these differences have important consequences for ecosystem services (e.g., carbon sequestration and storage) and in terms of responses to climate change. We quantified global patterns of tree palm relative abundance to help improve understanding of tropical forests and reduce uncertainty about these ecosystems under climate change. Location: Tropical and subtropical moist forests. Time period: Current. Major taxa studied: Palms (Arecaceae). Methods: We assembled a pantropical dataset of 2,548 forest plots (covering 1,191 ha) and quantified tree palm (i.e., ≥10 cm diameter at breast height) abundance relative to co-occurring non-palm trees. We compared the relative abundance of tree palms across biogeographical realms and tested for associations with palaeoclimate stability, current climate, edaphic conditions and metrics of forest structure. Results: On average, the relative abundance of tree palms was more than five times larger between Neotropical locations and other biogeographical realms. Tree palms were absent in most locations outside the Neotropics but present in >80% of Neotropical locations. The relative abundance of tree palms was more strongly associated with local conditions (e.g., higher mean annual precipitation, lower soil fertility, shallower water table and lower plot mean wood density) than metrics of long-term climate stability. Life-form diversity also influenced the patterns; palm assemblages outside the Neotropics comprise many non-tree (e.g., climbing) palms. Finally, we show that tree palms can influence estimates of above-ground biomass, but the magnitude and direction of the effect require additional work. Conclusions: Tree palms are not only quintessentially tropical, but they are also overwhelmingly Neotropical. Future work to understand the contributions of tree palms to biomass estimates and carbon cycling will be particularly crucial in Neotropical forests.

Original languageEnglish
Pages (from-to)1495-1514
Number of pages20
JournalGlobal Ecology and Biogeography
Volume29
Issue number9
DOIs
Publication statusPublished - 1 Sept 2020

Keywords

  • above-ground biomass
  • abundance patterns
  • Arecaceae
  • local abiotic conditions
  • Neotropics
  • pantropical biogeography
  • tropical rainforest
  • wood density

Fingerprint

Dive into the research topics of 'The global abundance of tree palms'. Together they form a unique fingerprint.

Cite this