INVESTIGADORES
QUIROGA Maria paula
artículos
Título:
Biogeographically Significant Units in conservation, A new integrative concept for conserving ecological and evolutionary processes
Autor/es:
M. PAULA QUIROGA; LUCIA CASTELLO; VILMA QUIPILDOR; ANDREA C. PREMOLI
Revista:
ENVIRONMENTAL CONSERVATION
Editorial:
CAMBRIDGE UNIV PRESS
Referencias:
Lugar: Cambridge; Año: 2019
ISSN:
0376-8929
Resumen:
We combined tools ofphylogeography, population genetics, and biogeographical interpretation toanalyze a group of phylogenetically independent lineages (animals and plants)that coexist within the same geographical region, yet under markedly differentenvironments, to identify barriers for gene flow. We tested the hypothesis thatmajor geographic features have produced a concordant genetic structure in phylogeneticallyindependent lineages. A rigorous bibliographic search was performed selecting availablemolecular information from six taxa occupying the southern biomes of SouthAmerica: Yungas, Prepuna, Puna and north of Monte. We estimatedwithin-population genetic diversity, the genetic structure, and haplotypephylogenies to assemble distribution maps of genetic barriers for each species.We found a strong association between genetic variation and latitudinaldistribution of populations. We detected a major barrier for six taxa at 27°Slatitude and a second one for a group of three species at 25º?26°S. Twoalternative non-exclusive hypotheses, geology and/or climate, explainconcordant genetic barriers in divergent lineages. We suggest the term biogeographicalsignificant units (BGSUs) to portray a group of populations of phylogeneticallyunrelated taxa that inhabit the same geographic region that were similarlyimpacted by major physical events, that can be used to identify priority areasin landscape conservation.