Phylogeography of a widespread species: pre-glacial vicariance, refugia,
occasional blocking straits and long-distance migrations

Santiso, Xabier; López, Lúa; Retuerto, Rubén; Barreiro, Rodolfo

doi:10.1093/aobpla/plw003

Cited by 21 publications

(11 citation statements)

References 67 publications

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“…; Santiso et al . ), but similar patterns of genetic variation have recently also been reported for species with a wider distribution range, reaching Central or even Northern Europe, such as the calcareous grassland species Hippocrepis comosa (Leipold et al . ), the sandy grassland species Corynephorus canescens (Harter et al .…”

Section: Discussionsupporting

confidence: 64%

Molecular markers provide evidence for a broad‐fronted recolonisation of the widespread calcareous grassland species Sanguisorba minor from southern and cryptic northern refugia

2017

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Calcareous grasslands belong to the most species-rich and endangered habitats in Europe. However, little is known about the origin of the species typically occurring in these grasslands. In this study we analysed the glacial and post-glacial history of Sanguisorba minor, a typical plant species frequently occurring in calcareous grasslands. The study comprised 38 populations throughout the whole distribution range of the species across Europe. We used molecular markers (AFLP) and applied Bayesian cluster analysis as well as spatial principal components analysis (sPCA) to identify glacial refugia and post-glacial migration routes to Central Europe. Our study revealed significant differences in the level of genetic variation and the occurrence of rare fragments within populations of S. minor and a distinct separation of eastern and western lineages. The analyses uncovered traditional southern but also cryptic northern refugia and point towards a broad fronted post-glacial recolonisation. Based on these results we postulate that incomplete lineage sorting may have contributed to the detected pattern of genetic variation and that S. minor recolonised Central Europe post-glacially from Iberia and northern glacial refugia in France, Belgium or Germany. Our results highlight the importance of refugial areas for the conservation of intraspecific variation in calcareous grassland species.

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Section: Discussionsupporting

confidence: 64%

Molecular markers provide evidence for a broad‐fronted recolonisation of the widespread calcareous grassland species Sanguisorba minor from southern and cryptic northern refugia

2017

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“…The species’ survival depends on the speed of dispersal, especially in fragmented landscapes, to keep up with climate change [41]. Indeed, according to Santiso et al [44], A . unedo reveals a considerable ability to disperse, migrating over thousands of kilometers, and this will be very helpful under future climate changes scenarios.…”

Section: Discussionmentioning

confidence: 99%

“…unedo , during the Last Glacial Maximum (LGM) [16, 52]. Moreover, Santiso and colleagues [44] in a phylogeographic study of the species, refer that the strawberry tree survived the late quaternary, in the western Mediterranean, due to the existence of ancestral haplotypes, restricted to that region. Indeed, during the Pleistocene, the regions with lower latitudes in Europe were cooler, and the Iberian Peninsula coastal areas were less glaciated, compared to inland regions ([8] and references therein).…”

Section: Discussionmentioning

confidence: 99%

Bioclimatic modeling in the Last Glacial Maximum, Mid-Holocene and facing future climatic changes in the strawberry tree (Arbutus unedo L.)

et al. 2019

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Increasing forest wildfires in Portugal remain a growing concern since forests in the Mediterranean region are vulnerable to recent global warming and reduction of precipitation. Therefore, a long-term negative effect is expected on the vegetation, with increasing drought and areas burnt by fires. The strawberry tree (Arbutus unedo L.) is particularly used in Portugal to produce a spirit by processing its fruits and is the main income for forestry owners. Other applications are possible due to the fruit and leaves’ anti-oxidant properties and bioactive compounds production, with a potential for clinical and food uses. It is a sclerophyllous plant, dry-adapted and fire resistant, enduring the Mediterranean climate, and recently considered as a possibility for afforestation, to intensify forest discontinuity where pines and eucalypts monoculture dominate the region. To improve our knowledge about the species’ spatial distribution we used 318 plots (the centroid of a 1 km2 square grid) measuring the species presence and nine environmental attributes. The seven bioclimatic variables most impacting on the species distribution and two topographic features, slope and altitude, were used. The past, current and future climate data were obtained through WorldClim. Finally, the vulnerability of the strawberry tree to the effects of global climate change was examined in the face of two emission scenarios (RCP 4.5 and 8.5), to predict distribution changes in the years 2050 and 2070, using a species distribution models (MaxEnt). The reduction of suitable habitat for this species is significant in the southern regions, considering the future scenarios of global warming. Central and northern mountainous regions are putative predicted refuges for this species. Forest policy and management should reflect the impact of climate change on the usable areas for forestry, particularly considering species adapted to the Mediterranean regions and wildfires, such as the strawberry tree. The distribution of the species in the Last Glacial Maximum (LGM) and Mid-Holocene (MH) agrees with previous genetic and paleontological studies in the region, which support putative refuges for the species. Two in the southern and coastal-central regions, since the LGM, and one in the east-central mountainous region, considered as cryptic refugia.

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“…2014; Santiso et al . 2016), as well as the ecological specialization of Mediterranean elements (Thompson et al . 2005).…”

Section: Introductionmentioning

confidence: 99%

“…Previous studies have explored species-climate relationships for a wide variety of organisms in this area (e.g. Petit et al 2005;Youssef et al 2011;Planas et al 2014;Santiso et al 2016), as well as the ecological specialization of Mediterranean elements (Thompson et al 2005). The Mediterranean biogeographical pattern is also one of the 16 major patterns identified in lichens (Galloway 2008).…”

Section: Introductionmentioning

confidence: 99%

Ecological specialization of lichen congeners with a strong link to Mediterranean-type climate: a case study of the genusSolenopsorain the Apennine Peninsula

Guttová¹,

Fačkovcová²,

Martellos

et al. 2019

The Lichenologist

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An ecological biogeographical perspective provides an understanding of the factors that shape the geographical distribution of organisms, their biodiversity and ecological speciation. Focusing on members of the lichen genus Solenopsora, which are strongly linked to a Mediterranean-type climate, we aimed to depict their environmental niches in the Apennine Peninsula. This area represents their ecological optima, as well as the biogeographical centre of distribution. On the basis of occurrences of Solenopsora congeners, we identified the key ecological factors that shape their environmental niches. Applying an ensemble approach, which merges the results of Random Forest, GLM and MaxEnt algorithms, suitability maps were developed. These are mainly influenced by geological substratum, temperature and precipitation. Occurrence of Solenopsora taxa seems to be mainly governed by low variability in diurnal temperature and tolerance to dryness, with precipitation in the range of 0–20 mm in the driest month and a minimum temperature of >5 °C in the coldest month. The sensitivity to diurnal temperature, an important indicator for climate change, suggests that the taxa confined to Mediterranean bioclimatic types (i.e. Solenopsora grisea, S. marina, S. olivacea subsp. olbiensis and S. olivacea subsp. olivacea) might be good indicators of climatic stability. The geological substratum was a strong limiting factor and separated the taxa into three groups: those growing on calcareous, siliceous and ultramafic substrata. Limited co-occurrence of species confined to one of the three categories suggests that the level of niche differentiation is on a microhabitat level. Accounting for ecological requirements, the taxa differ in their tolerance to sub-optimal conditions. The ecological niches of a sister subspecies pair with different reproduction strategies, fertile S. olivacea subsp. olivacea and sorediate S. olivacea subsp. olbiensis, overlap strongly. However, habitat suitability for S. olivacea subsp. olbiensis is greater in areas with higher precipitation in the driest month, whereas S. olivacea subsp. olivacea is more restricted to warmer and drier areas. We also report new regional records for Italy and the first records of S. cesatii in Serbia and Ukraine, and of S. liparina in Serbia.

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Phylogeography of a widespread species: pre-glacial vicariance, refugia, occasional blocking straits and long-distance migrations

Cited by 21 publications

References 67 publications

Molecular markers provide evidence for a broad‐fronted recolonisation of the widespread calcareous grassland species Sanguisorba minor from southern and cryptic northern refugia

Molecular markers provide evidence for a broad‐fronted recolonisation of the widespread calcareous grassland species Sanguisorba minor from southern and cryptic northern refugia

Bioclimatic modeling in the Last Glacial Maximum, Mid-Holocene and facing future climatic changes in the strawberry tree (Arbutus unedo L.)

Ecological specialization of lichen congeners with a strong link to Mediterranean-type climate: a case study of the genusSolenopsorain the Apennine Peninsula

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