Global monocot diversification: geography better explains variation in species richness than environment or biology

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Title: Global monocot diversification: geography better explains variation in species richness than environment or biology
Author(s): Tang, CQ
Orme, CDL
Bunnefeld, L
Jones, FA
Powell, S
Chase, MW
Barraclough, TG
Savolainen, V
Item Type: Journal Article
Abstract: Monocots account for a quarter of angiosperm species richness and are among the most economically and culturally important plants, including cereals (grasses), palms, orchids and lilies. Previous investigations of correlates of monocot species diversity have varied in scale and usually concentrated on a few drivers of diversification. Here, to disentangle the correlates of monocot diversity, we reconstructed a genus-level phylogenetic tree (1987 of the 2713 genera) and compiled an extensive database of abiotic, biotic and geographical characteristics to assess whether differences in these traits correlate with the vast asymmetrical species richness among genera present in this clade. Our results support several classical biodiversity theories, including species–area relationships, and latitudinal and elevational diversity gradients. Furthermore, interactions among these factors explain an additional 10% of the variation (compared to 36% from the main effects alone). We conclude that higher species richness among monocot genera is associated with geographical variables, especially larger ranges and lower elevations, rather than physical environment or physiology.
Publication Date: 2-Nov-2016
Date of Acceptance: 2-Sep-2016
URI: http://hdl.handle.net/10044/1/39821
DOI: https://dx.doi.org/10.1111/boj.12497
ISSN: 0024-4074
Publisher: Wiley
Start Page: 1
End Page: 15
Journal / Book Title: Botanical Journal of the Linnean Society
Volume: 183
Issue: 1
Copyright Statement: © 2016 The Linnean Society of London
Sponsor/Funder: The Leverhulme Trust
Natural Environment Research Council (NERC)
The Leverhulme Trust
Funder's Grant Number: F/07 058/AV
NE/J012696/1
RF-2016-373/2
Keywords: Science & Technology
Life Sciences & Biomedicine
Plant Sciences
biodiversity
correlates of diversity
elevational diversity gradient
latitudinal diversity gradient
phylogenetic generalised least squares analysis
species-area relationship
DARWINS ABOMINABLE MYSTERY
LARGE PHYLOGENETIC TREES
LATITUDINAL GRADIENTS
GENE FLOW
ANGIOSPERM DIVERSIFICATION
PLANT DIVERSIFICATION
BIODIVERSITY HOTSPOT
AREA RELATIONSHIP
FLOWERING PLANTS
SOUTHERN AFRICA
0607 Plant Biology
Evolutionary Biology
Publication Status: Published
Appears in Collections:Faculty of Natural Sciences



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