Palaeoenvironmental research at Rexidora Cave: New evidence of cold and dry conditions in NW Iberia during MIS 3

Álvarez-Lao, Diego J.; Ruiz-Zapata, M.B.; Gil-García, María José; Ballesteros, Daniel; Jiménez-Sánchez, Montserrat

doi:10.1016/j.quaint.2015.04.062

Cited by 22 publications

(16 citation statements)

References 51 publications

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“…Finally, cold‐adapted large fauna sites in karst caves of the Asturian Coast developed after the erosion of the alluvial fans. Cold‐adapted large fauna sites older than 50 ka have not been discovered yet, but previous studies in the nearby Jou Puerta and La Rexidora Caves (Figure ), as well as in other Cantabrian sites, suggest that this fauna should have arrived on the Cantabrian Coast prior to 50 ka (Álvarez‐Lao, ; Álvarez‐Lao et al , ; Álvarez‐Lao and Méndez, ). The lack of MIS 5–4 sites is consistent with the presence of alluvial fans covering the karst surface during the phase 4 of the speleogenetical model.…”

Section: Discussionsupporting

confidence: 70%

“…Among these sites, 17 caves like the Altamira Cave (Rose, ) have been declared Word Heritage sites since 1985. The Cantabrian Coast also contains several caves, such as La Rexidora and Jou Puerta caves in the Asturias region (Figure ), with palaeontological remains of large cold‐adapted mammals that came from Northern Europe during the Upper Pleistocene (Álvarez‐Lao and García, ; Álvarez‐Lao, , ; Álvarez‐Lao et al , ; Álvarez‐Lao and Méndez, ). Nevertheless, the cold fauna record is normally younger than 50 ka suggesting that global or regional changes could have occurred at this age.…”

Section: Introductionmentioning

confidence: 99%

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New evidence of sea‐level lowstands and paleoenvironment during MIS 6 and 4 in the Cantabrian coastal karst: the Cobiheru cave (North Iberia)

Ballesteros

Rodríguez‐Rodríguez

González-Lemos

et al. 2017

Earth Surf Processes Landf

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The geomorphological evolution of the Cobiheru Cave shows the influence of the non‐carbonate coastal mountain ranges on coastal karst evolution, as well as the temporal distribution of the cold‐adapted fauna sites in the Cantabrian Coast. Geomorphological observation and uranium/thorium (U/Th) dating lead to the construction of an evolution model. The model comprises two episodes of cave deposition occurring at c. 60–70 and 130–150 ka, linked to cold climate conditions, global sea‐level lowstands and the erosion of alluvial fans that covered the karst. Moreover, the comparison between the Cobiheru record and some raised beaches identified in previous studies sets the beginning of the sea‐level lowering in the Cantabrian Sea during the marine isotope stages (MIS) 5–4 transition. Two palaeoenvironments are inferred based on finding Equus ferus and Elona quimperiana. A wet deciduous forest would have developed on the emerged marine terrace of the Cobiheru Cave since at least the Middle Pleistocene, and an open landscape with scarce vegetation would have been present at c. 65 ka. The erosional event identified in the Cobiheru Cave helps to understand the temporal distribution of cold‐adapted mammals located in the Asturias region. The probable sites of cold‐adapted fauna developed in caves and alluvial fans would have disappeared after 65 ka. Therefore, palaeontological and palaeoclimate research based on cold‐adapted mammals suggests the occurrence of an hiatus in the palaeontological record prior to 50 ka. Copyright © 2017 John Wiley & Sons, Ltd.

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Section: Discussionsupporting

confidence: 70%

Section: Introductionmentioning

confidence: 99%

New evidence of sea‐level lowstands and paleoenvironment during MIS 6 and 4 in the Cantabrian coastal karst: the Cobiheru cave (North Iberia)

Ballesteros

Rodríguez‐Rodríguez

González-Lemos

et al. 2017

Earth Surf Processes Landf

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“…We used a landscape composed of 46,292 squared demes (subpopulations) of 0.1 km 2 each (see Figure 1 and Figure S1) that covers all the demes above 1400 m, considering that below this altitude Chorthippus cazurroi individuals were not found. We assumed that the range expansion started from a single deme (Urriellu, Figure 1 and Figure 2) based on the combination of high values of genetic diversity found on this locality (Table S1) and its close situation to putative areas with potential habitat for grasshoppers during the Pleistocene [47]. We simulated population genetics parameters by sampling from prior distributions defined according to previous studies (see Table S2).…”

Section: Methodsmentioning

confidence: 99%

Gradual Distance Dispersal Shapes the Genetic Structure in an Alpine Grasshopper

Illera

Arenas

López-Sánchez

et al. 2019

Genes

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The location of the high mountains of southern Europe has been crucial in the phylogeography of most European species, but how extrinsic (topography of sky islands) and intrinsic features (dispersal dynamics) have interacted to shape the genetic structure in alpine restricted species is still poorly known. Here we investigated the mechanisms explaining the colonisation of Cantabrian sky islands in an endemic flightless grasshopper. We scrutinised the maternal genetic variability and haplotype structure, and we evaluated the fitting of two migration models to understand the extant genetic structure in these populations: Long-distance dispersal (LDD) and gradual distance dispersal (GDD). We found that GDD fits the real data better than the LDD model, with an onset of the expansion matching postglacial expansions after the retreat of the ice sheets. Our findings suggest a scenario with small carrying capacity, migration rates, and population growth rates, being compatible with a slow dispersal process. The gradual expansion process along the Cantabrian sky islands found here seems to be conditioned by the suitability of habitats and the presence of alpine corridors. Our findings shed light on our understanding about how organisms which have adapted to live in alpine habitats with limited dispersal abilities have faced new and suitable environmental conditions.

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“…9) decreased between 38 and 17 ka (Moreno et al, 2010), 4cryogenic processes took place in the Belbin depression from 37 to 29 ka (Fig. 9) (Nieuwendam et al, 2015); and (5) the development of dry and cold conditions during the MIS 3-2 in the Cantabrian Mountains (Álvarez-Lao et al, 2015;Uzquiano et al, 2016).…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Quaternary regional evolution based on karst cave geomorphology in Picos de Europa (Atlantic Margin of the Iberian Peninsula)

et al. 2019

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Palaeoenvironmental research at Rexidora Cave: New evidence of cold and dry conditions in NW Iberia during MIS 3

Cited by 22 publications

References 51 publications

New evidence of sea‐level lowstands and paleoenvironment during MIS 6 and 4 in the Cantabrian coastal karst: the Cobiheru cave (North Iberia)

New evidence of sea‐level lowstands and paleoenvironment during MIS 6 and 4 in the Cantabrian coastal karst: the Cobiheru cave (North Iberia)

Gradual Distance Dispersal Shapes the Genetic Structure in an Alpine Grasshopper

Quaternary regional evolution based on karst cave geomorphology in Picos de Europa (Atlantic Margin of the Iberian Peninsula)

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