Succession and stable isotope composition of gastropods in Holocene semi-arid alluvial sequences (Bardenas Reales, Ebro Basin, NE Spain)
Palaeoenvironmental implications
Datos Bibliográficos
| ID | 12265752 |
|---|---|
| Autores | Xabier Murelaga-Bereicua (0000-0001-8049-4917, University of the Basque Country, autor de correspondencia), X MURELAGA (Universidad del País Vasco UPV/EHU, Spain), Luis Ángel Ortega Cuesta (0000-0002-8929-0328, University of the Basque Country), LA Ortega (Universidad del País Vasco UPV/EHU, Spain), Carlos Sancho (0000-0002-2662-1070, Universidad de Zaragoza), A Munoz (0000-0002-5869-0652, Universidad de Zaragoza), Arsenio Muñoz Jiménez (0000-0001-5700-6495, Universidad de Zaragoza), Cinta Osácar (Universidad de Zaragoza), Mariano Larraz (Universidad de Navarra) |
| Año | 2012 |
| Volumen | 22 |
| Número | 9 |
| Páginas | 1047-1060 |
| Fecha de publicación | 2012-03-21 |
| Peer Reviewed | Sí |
| Open Access | Sí |
| Tipo | ARTICLE |
| Revista | The Holocene (JOURNAL) |
| Identificadores de la revista | ISSN: 0959-6836 • E-ISSN: 1477-0911 |
| Editorial | SAGE Publishing (PUBLISHER • US) |
| DOI | 10.1177/0959683612437869 |
| OpenAlex | W2060053287 |
| Idioma | EN |
| Citas recibidas | 2 |
| Referencias citadas | 60 |
Three alluvial units, ranging from the middle to late Holocene in age, were distinguished in Bardenas Reales Natural Park (Ebro Basin, NE Spain) based on morphosedimentary analysis and radiocarbon data. In this sensitive Mediterranean alluvial system, the succession and isotopic composition of gastropods greatly contribute to establishing the prevailing palaeoenvironmental conditions. The oldest unit (4763±87 to 2848±55 cal. yr BP) represents fluvial channels and swamped areas, includes the greatest proportion of aquatic gastropods ( Ancylus fluviatilis and Lymnaea truncatula) and marsh species ( Vallonia pulchella) and presents the most negative values of δ 18 O (mean −2.21‰ PDB). The intermediate unit (1403±60 to 836±65 cal. yr BP) shows a high rate of alluvial activity related to irregular torrential rainfall, with sedimentary features of aridity, and this unit includes only dry open ground gastropods ( Xeroplexa sp., Chondrinidae indet. and Granopupa granum) and presents the least negative values of δ 18 O (mean −1.17‰ PDB). The youngest unit (191±97 to 127±82 cal. yr BP) exhibits a recurrence of flooding events, mostly includes marsh ( Truncatellina callicratis and Lauria cylindracea) and aquatic ( Lymnae truncatula) species and shows a very heterogeneous isotopic signal, with −1.83‰ PDB as the mean value of δ 18 O. As a consequence, a palaeoenvironmental pattern comprised of an early wetter/colder phase followed by a warmer/drier period and, finally, an increase in both cold conditions and hydrological variability, is deduced for the middle to late Holocene in the Ebro Basin. Gastropod shell δ 13 C values, related to vegetation, can also be linked to palaeoenvironmental changes. The succession and stable isotope composition of gastropods in alluvial sequences are revealed as very sensitive indicators of rapid Holocene climatic changes in fragile semi-arid landscape systems
Alluvial fan · Alluvial plain · Alluvium · Arid · Biology · Ecological succession · Geography · Holocene · Physical geography · Radiocarbon dating · Structural basin · Archaeology and ancient environmental studies · Geology and Paleoclimatology Research · Isotope Analysis in Ecology · Ecology · Geology · Paleontology
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| Obras citantes distintas | 2 |
|---|---|
| Citas por año | 0,15 |
| Intervalo de citas | 2013 - 2023 (11) |
| Velocidad de citación | historical |
| Altamente citado | No |
| Tipos de cita | Neutras: 2 |