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, 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 Andrade, Luis E.O.C. AragãoAlejandro Araujo Murakami, Peter S. Ashton, Timothy R. Baker, Jos Barlow, Jean François Bastin, Erika Berenguer, Lilian Blanc, Katrin Böhning-Gaese, Damien Bonal, Frans Bongers, Matt Bradford, Fabian Brambach, Francis Q. Brearley, Jose L.C. Camargo, David G. Campbell, Carolina V. Castilho, Damien Catchpole, Carlos E. Cerón Martínez, Shengbin Chen, Connie Clark, Murray Collins, James A. Comiskey, Massiel Nataly Corrales Medina, Flávia R.C. Costa, Heriberto David-Higuita, Jhon del Aguila-Pasquel, Géraldine Derroire, Anthony Di Fiore, Jean Louis Doucet, Aurélie Dourdain, Donald R. Drake, Andreas Ensslin, Terry Erwin, Corneille E.N. Ewango, Robert M. Ewers, Sophie Fauset, Ted R. Feldpausch, Joice Ferreira, Leandro Valle Ferreira, Markus Fischer, Janet Franklin, Gabriella M. Fredriksson, Thomas W. Gillespie, Martin Gilpin, Christelle Gonmadje, Arachchige Upali Nimal Gunatilleke, Khalid Rehman Hakeem, Jefferson S. Hall, Keith C. Hamer, David J. Harris, Rhett D. Harrison, Andrew Hector, Andreas Hemp, Bruno Herault, Carlos Gabriel Hidalgo Pizango, Eurídice N.Honorio Coronado, Wannes Hubau, Mohammad Shah Hussain, Faridah Hanum Ibrahim, Nobuo Imai, Carlos A. Joly, Shijo Joseph, Kuswata Kartawinata, Justin Kassi, Timothy J. Killeen, Kanehiro Kitayama, Bente Bang Klitgård, Nicolas Labrière, Yves Laumonier, Susan G. Laurance, William F. Laurance, Michael J. Lawes, Aurora Levesley, Janvier Lisingo, Thomas Lovejoy, Jon C. Lovett, Xinghui Lu, Anne Mette Lykke, William E. Magnusson, Ni Putu Diana Mahayani, Yadvinder Malhi, Asyraf Mansor, Jose Luis Marcelo Peña, Ben H. Marimon-Junior, Andrew R. Marshall, Karina Melgaco, Casimiro Mendoza Bautista, William Milliken, Abel Lorenzo Monteagudo Mendoza, Badru Mugerwa, Laszlo Nagy, Naret Seuaturien, Marcelo T. Nascimento, David A. Neill, Luiz Menini Neto, Rueben Nilus, Mario Percy Núñez Vargas, R. Nazaré O. de Araújo, Onrizal Onrizal, Walter A. Palacios, Sonia Palacios-Ramos, Marc Parren, Paulo S. Morandi, R. Toby Pennington, Georgia Pickavance, Nigel C.A. Pitman, Erny Poedjirahajoe, Lourens Poorter, John R. Poulsen, P. Rama Chandra Prasad, Adriana Prieto, Lan Qie, Carlos A. Quesada, Hirma Ramírez-Angulo, Jean Claude Razafimahaimodison, Edilson J. Requena-Rojas, Carlos Reynel Rodriguez, Anand Roopsind, Andes Rozak, Agustín Rudas Lleras, Ervan Rutishauser, Gemma Rutten, Ruwan Punchi-Manage, Rafael P. Salomão, Hoang Van Sam, Swapan Kumar Sarker, Manichanh Satdichanh, Juliana Schietti, Christine B. Schmitt, Beatriz Schwantes Marimon, Feyera Senbeta, Douglas Sheil, Javier E. Silva-Espejo, Marcos Silveira, Bonaventure Sonké, Marc K. Steininger, Robert Steinmetz, Tariq Stévart, Raman Sukumar, Aisha Sultana, Terry C.H. Sunderland, Hebbalalu Satyanarayana Suresh, Jianwei Tang, Edmund Tanner, Hans ter Steege, John W. Terborgh, Ida Theilade, Jonathan Timberlake, Armando Torres-Lezama, Peter Umunay, María Uriarte, Luis Valenzuela Gamarra, Ima Célia Guimarães Vieira, Simone A. Vieira, Jeanneth Villalobos Cayo, Ophelia Wang, Campbell O. Webb, Edward L. Webb, Timothy J.S. Whitfeld, Serge Wich, Simon Willcock, Susan K. Wiser, Kenneth R. Young, Rahmad Zakaria, Runguo Zang, Charles E. Zartman, Irié Casimir Zo-Bi, Henrik Balslev

*Corresponding author af dette arbejde

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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.

OriginalsprogEngelsk
TidsskriftGlobal Ecology and Biogeography
Vol/bind29
Nummer9
Sider (fra-til)1495-1514
Antal sider20
ISSN1466-822X
DOI
StatusUdgivet - sep. 2020

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