Low phylogenetic beta diversity and geographic neo-endemism in amazonian white-sand forests
Juan Ernesto Guevara
(1, 2)
,
Gabriel Damasco
(3)
,
Christopher Baraloto
(4)
,
Paul V. A. Fine
(5)
,
Maria Cristina Penuela
(6)
,
Carolina Castilho
(7)
,
Alberto Vincentini
(8)
,
Dairon Cardenas
(9)
,
Florian Wittmann
(10)
,
Natalia Targhetta
(8)
,
Oliver Phillips
(11)
,
Juliana Stropp
(12)
,
Ieda Amaral
(13)
,
Paul Maas
(14)
,
Abel Monteagudo
(15)
,
Eliana M. Jimenez
(16)
,
Rachel Thomas
(17)
,
Roel Brienen
(11)
,
Alvaro Duque
(18)
,
William Magnusson
(8)
,
Cid Ferreira
(8)
,
Euridice Honorio
(19)
,
Francisca de Almeida Matos
(8)
,
Freddy R. Arevalo
(20)
,
Julien Engel
(4)
,
Pascal Petronelli
(4)
,
Rodolfo Vasquez
(15)
,
Hans ter Steege
(21)
1
Department of Integrative Biology
2 Museo Ecuatoriano de Ciencias Naturales
3 Department of Integrative Biology
4 UMR ECOFOG - Ecologie des forêts de Guyane
5 UC Berkeley - University of California [Berkeley]
6 Universidad Regional Amazonica Ikiam
7 Centro de Pesquisa Agroflorestal de Roraima
8 Coordenac Bao de Pesquisas em Ecologia
9 Instituto SINCHI
10 Department of Biochemistry [Mainz]
11 School of Geography [Leeds]
12 Institute of Biological and Health Sciences
13 Projeto TEAM-Manaus
14 Department of Botany
15 Missouri Botanical Garden
16 IKIAM
17 Iwokrama International Centre for Rainforest Conservation and Development
18 Departamento de Ciencias Forestales
19 IIAP - Instituto de Investigaciones de la Amazonía Peruana
20 UNAP - Universidad Nacional de la Amazonía Peruana [Loreto, Perou]
21 Naturalis Biodiversity Center [Leiden]
2 Museo Ecuatoriano de Ciencias Naturales
3 Department of Integrative Biology
4 UMR ECOFOG - Ecologie des forêts de Guyane
5 UC Berkeley - University of California [Berkeley]
6 Universidad Regional Amazonica Ikiam
7 Centro de Pesquisa Agroflorestal de Roraima
8 Coordenac Bao de Pesquisas em Ecologia
9 Instituto SINCHI
10 Department of Biochemistry [Mainz]
11 School of Geography [Leeds]
12 Institute of Biological and Health Sciences
13 Projeto TEAM-Manaus
14 Department of Botany
15 Missouri Botanical Garden
16 IKIAM
17 Iwokrama International Centre for Rainforest Conservation and Development
18 Departamento de Ciencias Forestales
19 IIAP - Instituto de Investigaciones de la Amazonía Peruana
20 UNAP - Universidad Nacional de la Amazonía Peruana [Loreto, Perou]
21 Naturalis Biodiversity Center [Leiden]
Juan Ernesto Guevara
- Fonction : Auteur correspondant
Oliver Phillips
- Fonction : Auteur
- PersonId : 763132
- ORCID : 0000-0002-8993-6168
- IdRef : 071202331
Julien Engel
- Fonction : Auteur
- PersonId : 740115
- IdHAL : julien-engel
- ORCID : 0000-0002-8078-9309
Résumé
Over the past three decades, many small-scale floristic studies of white-sand forests across the Amazon basin have been published. Nonetheless, a basin-wide description of both taxonomic and phylogenetic alpha and beta diversity at regional scales has never been achieved. We present a complete floristic analysis of white-sand forests across the Amazon basin including both taxonomic and phylogenetic diversity. We found strong regional differences in the signal of phylogenetic community structure with both overall and regional Net Relatedness Index and Nearest Taxon Index values found to be significantly positive leading to a pattern of phylogenetic clustering. Additionally, we found high taxonomic dissimilarity but low phylogenetic dissimilarity in pairwise community comparisons. These results suggest that recent diversification has played an important role in the assembly of white-sand forests causing geographic neo-endemism patterns at the regional scale.