Flora of the hot deserts: emerging patterns from phylogeny-based diversity studies
Author
dc.contributor.author
Scherson Vicencio, Rosa
Author
dc.contributor.author
Luebert Bruron, Federico
Author
dc.contributor.author
Pliscoff, Patricio
Author
dc.contributor.author
Fuentes Castillo, Taryn
Admission date
dc.date.accessioned
2021-04-10T21:17:49Z
Available date
dc.date.available
2021-04-10T21:17:49Z
Publication date
dc.date.issued
2020
Cita de ítem
dc.identifier.citation
American Journal of Botany 107(11): 1467–1469, 2020
es_ES
Identifier
dc.identifier.other
10.1002/ajb2.1555
Identifier
dc.identifier.uri
https://repositorio.uchile.cl/handle/2250/179058
Abstract
dc.description.abstract
Relatively recent increases in molecular and geographic data for
many taxa in different areas of the world have provided scientists
with tools to evaluate biodiversity using evolutionary or phylogeny-based indices (reviewed by Laffan, 2018). These measures
provide quantitative estimates of the portion of the tree of life
contained in a taxon or community, aiming to answer the question
of what percentage of the phylogeny would be lost if that taxon
or community is not conserved (Faith, 1992; Purvis et al., 2000).
One of the most widely used phylogenetic indices is phylogenetic
diversity (PD), which measures the evolutionary history captured
by a set of species (or any biodiversity unit) on the tree of life
(Faith, 1992). A higher PD value can represent either a set of taxa
that represent longer branches than expected and/or are overdispersed in the phylogeny (Fig. 1A, B). Use of PD was proposed
more than two decades ago (Faith, 1992) as a method for finding
sets of taxa that could be highlighted as priorities for conservation
and has recently been proposed as a biodiversity metric by several
international conservation organizations (see IPBES, 2019). For
example, the International Union for the Conservation of Nature
(IUCN) has recently established a Phylogenetic Diversity Task
Force (https://www.iucn.org/commissions/ssc-groups/disciplina
ry-groups/phylogenetic-diversity-task-force), a global expert
group, aimed at incorporating PD into practical conservation
strategies.