Organisms Diversity & Evolution

, Volume 17, Issue 1, pp 11–28

Climatic niche evolution in the Andean genus Menonvillea (Cremolobeae: Brassicaceae)

Original Article

DOI: 10.1007/s13127-016-0291-5

Cite this article as:
Salariato, D.L. & Zuloaga, F.O. Org Divers Evol (2017) 17: 11. doi:10.1007/s13127-016-0291-5
  • 174 Downloads

Abstract

The study of how climatic niches change over evolutionary time has recently attracted the interest of many researchers. Different methodologies have been employed principally to analyze the temporal dynamics of the niche and specially to test for the presence of phylogenetic niche conservatism. Menonvillea, a genus of Brassicaceae including 24 species, is distributed primarily along the Andes of Argentina and Chile, with some taxa growing in southern Patagonia and others in the Atacama Desert and the Chilean Matorral. The genus is highly diversified morphologically but also presents a remarkably wide ecological range, growing from the high Andean elevations, to the dry coastal deserts in Chile, or the Patagonia Steppe in Argentina. In this study, we used molecular phylogenies together with climatic data to study climatic niche evolution in the genus. The results show that the main climatic niche shifts in Menonvillea occurred between the sections Cuneata-Scapigera and sect. Menonvillea throughout the Mid-Late Miocene, and associated with the two main geographical distribution centers of the genus: the highlands of the central-southern Andes and the Atacama Desert-Chilean Matorral, respectively. Climatic niches in these lineages were mainly differentiated by the aridity and potential evapotranspiration, the minimum temperatures of the coldest month, and the temperature annual range and seasonality. Niche evolution in Menonvillea deviated from a Brownian motion process, with most of the climatic dimension best-fitting to an Ornstein-Uhlenbeck model of multiple adaptive peaks. Our results also indicated that higher aridity levels and lower annual temperature ranges were associated with the evolution of the annual habit, as exemplified by the distribution of sect. Menonvillea. Finally, the results suggested that climatic niche evolution in Menonvillea exhibited some degree of phylogenetic niche conservatism, fundamentally within the two main lineages (sect. Menonvillea and sects. Cuneata-Scapigera).

Keywords

Andes Atacama Desert Cruciferae Patagonian steppe Phylogenetic niche conservatism Species distribution modeling 

Supplementary material

13127_2016_291_MOESM1_ESM.pdf (1.7 mb)
Fig. S1Values for the main variables associated to the first five principal components in the studied area. A. PC1: Potential Evapo-transpiration (PET) and Aridity index (IA). B. Min Temperature of Coldest Month (BIO6), Altitude (ALT). C. PC3: Precipitation Seasonality (BIO15), Isothermality (BIO3). D. PC4: Temperature Annual Range (BIO7), Temperature Seasonality (BIO4). E. PC5: Mean Temperature of Driest Quarter (BIO9), Precipitation of Warmest Quarter (BIO18). F. Distribution of Menonvillea in South America and studied area represents by the minimum convex polygons. Red, black, and blue dots correspond to species of sects. Cuneata, Scapigera, and Menonvillea, respectively. (PDF 1780 kb)
13127_2016_291_MOESM2_ESM.pdf (357 kb)
Fig. S2Climatic niche of Menonvillea species included in sects. Cuneata and Scapigera, produced by the two main axes of the PCA-env. For each section, the grey-to-black shading represents the grid cell density of the species occurrence (black being the highest density). The first dashed line represents the 50 % of the available environment and the solid line represents the 100 %. Lower three taxa are included in the sect. Scapigera, the remaining species belong to sect. Cuneata. (PDF 356 kb)
13127_2016_291_MOESM3_ESM.pdf (297 kb)
Fig. S3Climatic niche of Menonvillea species included in sect. Menonvillea, produced by the two main axes of the PCA-env. For each section, the grey-to-black shading represents the grid cell density of the species occurrence (black being the highest density). The first dashed line represents the 50 % of the available environment and the solid line represents the 100 %. (PDF 297 kb)
13127_2016_291_MOESM4_ESM.pdf (642 kb)
Fig. S4Predicted suitable climatic conditions (logistic output) from the MaxEnt model for species included in Menonvillea sects. Cuneata and Scapigera using the five first principal components as climatic variables. (PDF 642 kb)
13127_2016_291_MOESM5_ESM.pdf (478 kb)
Fig. S5Predicted suitable climatic conditions (logistic output) from the MaxEnt model for species included in Menonvillea sect. Menonvillea using the five first principal components as climatic variables. (PDF 478 kb)
13127_2016_291_MOESM6_ESM.pdf (31 kb)
Fig. S6Maximum clade credibility tree (MCCT) estimated from nuclear ribosomal ITS and three chloroplast DNA regions (trnL-F, trnH-psbA, rps16 intron) using the concatenated method implemented in BEAST, uncorrelated log-normal relaxed clock model, and two secondary calibrations under normal prior distributions. Shaded horizontal bars show the 95 % highest posterior densities of divergence times and stars indicate nodes used for secondary calibration. Bayesian posterior support values >50 % are given at each node. (PDF 31 kb)
13127_2016_291_MOESM7_ESM.pdf (52 kb)
Fig. S7Ancestral state reconstructions of main climatic PCs for Menonvillea. X-axis represents divergence times (My) and the y-axis represents the reconstructed character values based on PC scores. Species of sects. Cuneata, Scapigera, and Menonvillea are colored in red, green, and blue, respectively. (PDF 51 kb)
13127_2016_291_MOESM8_ESM.docx (20 kb)
ESM 1(DOCX 20 kb)
13127_2016_291_MOESM9_ESM.docx (18 kb)
ESM 2(DOCX 18 kb)
13127_2016_291_MOESM10_ESM.xlsx (99 kb)
ESM 3(XLSX 99 kb)

Copyright information

© Gesellschaft für Biologische Systematik 2016

Authors and Affiliations

  1. 1.Instituto de Botánica Darwinion (CONICET–ANCEFN)San IsidroArgentina

Personalised recommendations