Palaeoenvironmental reconstruction of the late Miocene macroflora of La Bisbal d'Empordà (Catalonia, Spain). Comparison with small mammals
Tosal, Aixa (Universitat de Barcelona. Institut de Recerca de la Biodiversitat (IRBio))
Coward, Sophie Roselyn (Universitat de Barcelona. Institut de Recerca de la Biodiversitat (IRBio))
Casanovas i Vilar, Isaac (Institut Català de Paleontologia Miquel Crusafont)
Martín-Closas, Carles (Universitat de Barcelona. Institut de Recerca de la Biodiversitat (IRBio))

Data:	2022
Resum:	The late Miocene flora from La Bisbal d'Empordà (Catalonia, Spain) provides significant data for characterising the coastal vegetation from the north-eastern Iberian Peninsula during a key period in Neogene climatic evolution. To this end, a historical leaf collection from La Bisbal d'Empordà was re-examined, analysed from a palaeoenvironmental viewpoint and compared with data provided by the associated small mammal fauna. This flora dates from 9. 6-9. 7 Ma in age (early Tortonian) according to small mammal biostratigraphy. The fossil-bearing beds were deposited in the floodplain of a meandering river system. Three palaeoecological assemblages were recognized: 1) Helophytic plant stems related to a wetland community. 2) Torn leaves of Fraxinus sp. , Ulmus sp. , Zelkova sp. , Cedrelospermum sp. Populus balsamoides, Alnus gaudinii, Carpinus sp. , Platanus sp. , Acer tricuspidatum, Daphnogene sp. and, Laurophyllum sp. which would have belonged to a riparian forest located beyond the wetland community, with Fraxinus being the plant growing in closest proximity; 3) Isolated complete Paliurus seeds, interpreted as mainly wind-transported, which provide evidence of an open and more arid landscape situated distally from the floodplain. The small mammal assemblages associated with this flora are consistent with this palaeoenvironmental interpretation. The paucity of small arboreal mammal taxa and insectivores suggests limited forested vegetation areas, while the more common terrestrial species indicate better developed open landscapes. Our results show a more heterogeneous environment than previously thought and that the riverine processes impinged the flora, somewhat limiting the climatic conclusions that might be derived from leaf physiognomic analyses such as CLAMP.
Ajuts:	Agencia Estatal de Investigación PID2020-113912GB-I00 Agencia Estatal de Investigación PID2020-117289GB-I00 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-824 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-116 Ministerio de Economía y Competitividad RYC-2013-12470
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.
Llengua:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Matèria:	Neogene ; Riverine vegetation ; Taphonomy ; Paleoecology ; Micromammals ; South Europe
Publicat a:	Review of Palaeobotany and Palynology, Vol. 297 (February 2022) , art. 104583, ISSN 0034-6667

DOI: 10.1016/j.revpalbo.2021.104583

Postprint 76 p, 4.4 MB

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