Phylogenetic biome conservatism on a global scale

Date

2009

Authors

Crisp, Michael
Arroyo, Mary T.K.
Cook, Lynette Gai
Gandolfo, Maria A.
Jordan, Gregory J.
McGlone, M
Weston, Peter H.
Westoby, Mark
Wilf, Peter
Linder, H. Peter

Journal Title

Journal ISSN

Volume Title

Publisher

Macmillan Publishers Ltd

Abstract

How and why organisms are distributed as they are has long intrigued evolutionary biologists. The tendency for species to retain their ancestral ecology has been demonstrated in distributions on local and regional scales, but the extent of ecological conservatism over tens of millions of years and across continents has not been assessed. Here we show that biome stasis at speciation has outweighed biome shifts by a ratio of more than 25:1, by inferring ancestral biomes for an ecologically diverse sample of more than 11,000 plant species from around the Southern Hemisphere. Stasis was also prevalent in transocean colonizations. Availability of a suitable biome could have substantially influenced which lineages establish on more than one landmass, in addition to the influence of the rarity of the dispersal events themselves. Conversely, the taxonomic composition of biomes has probably been strongly influenced by the rarity of species transitions between biomes. This study has implications for the future because if clades have inherently limited capacity to shift biomes, then their evolutionary potential could be strongly compromised by biome contraction as climate changes.

Description

Keywords

Keywords: biome; climate change; evolution; phylogeny; Southern Hemisphere; taxonomy; article; biodiversity; biome; cladistics; ecological niche; ecological specialization; environmental protection; evolutionary adaptation; nonhuman; phylogeny; plant; priority jour

Citation

Source

Nature

Type

Journal article

Book Title

Entity type

Access Statement

License Rights

DOI

10.1038/nature07764

Restricted until

2037-12-31