e-journal

Are phylogenies derived from family-level supertrees robust for studies on macroecological patterns along environmental gradients?

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Ecologists frequently use a supertree method to generate phylogenies in ecological studies. However,
the robustness of research results based on phylogenies generated with a supertree method has not been well
evaluated. Here, we use the angiosperm tree flora of North America as a model system to test the robustness of
phylogenies generated with a supertree method for studies on the relationship between phylogenetic properties
and environment, by comparing the relationship between phylogenetic metrics and environmental variables
derived from a phylogeny reconstructed with a supertree method to that derived from a phylogeny resolved at
species level. North America was divided into equal area quadrats of 12 100 km2. Nine indices of phylogenetic
structure were calculated for angiosperm tree assemblages in each quadrat using two phylogenies resolved at
different levels (one resolved at the family level and the other resolved at the species level). Scores of phylogenetic
indices were related to two major climatic variables (temperature and precipitation) using correlation and
regression analyses. Scores of phylogenetic indices resulting from the two phylogenies are perfectly or nearly
perfectly correlated. On average, there is no difference in the variation explained by the two climatic variables
between scores of phylogenetic indices derived from the two phylogenies. Our study suggests that a phylogeny
derived from a well resolved family-level supertree as backbone with genera and species attached to the backbone
as polytomies is robust for studies investigating the relationship between phylogenetic structure and environment
in biological assemblages at a broad spatial scale.

Key words: phylogenetic diversity, phylogenetic niche conservatism, phylogenetic resolution, phylogenetic structure, phylomatic,polytomy, supertree.

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Ketersediaan

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Informasi Detail

Judul Seri

J. Syst. Evol.

No. Panggil

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Penerbit

: Institute of Botany., 2016

Deskripsi Fisik

J. Syst. Evol. 54 (1): 29–36, 2016

Bahasa

English

ISBN/ISSN

doi: 10.1111/jse.121

Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

BIOLOGI

Info Detail Spesifik

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Pernyataan Tanggungjawab

Wati/Agus

Versi lain/terkait

Lampiran Berkas

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