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Novel vegetation and establishment of Chihuahuan Desert communities in response to late Pleistocene moisture availability in the Cuatrociénegas Basin, NE Mexico

Thomas A Minckley, Nicholas Felstead Orcid Logo, Silvia Gonzalez

The Holocene, Volume: 29, Issue: 3, Pages: 457 - 466

Swansea University Author: Nicholas Felstead Orcid Logo

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DOI (Published version): 10.1177/0959683618816490

Abstract

With over 200 pools, lakes and rivers supporting over 70 species of endemic flora and fauna, the Cuatrociénegas Basin (CCB), Coahuila, NE Mexico, is an extremely important area for conservation studies. However, the palaeoenvironment of this unique area has been relatively neglected. Here, pollen da...

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Published in: The Holocene
ISSN: 0959-6836 1477-0911
Published: SAGE Publications 2019
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URI: https://cronfa.swan.ac.uk/Record/cronfa48618
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first_indexed 2019-01-29T20:02:46Z
last_indexed 2019-08-09T16:23:13Z
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spelling v2 48618 2019-01-29 Novel vegetation and establishment of Chihuahuan Desert communities in response to late Pleistocene moisture availability in the Cuatrociénegas Basin, NE Mexico 1f9e71499a69cbf9b18962bc2bb6c39e 0000-0001-6369-6832 Nicholas Felstead Nicholas Felstead true false 2019-01-29 SGE With over 200 pools, lakes and rivers supporting over 70 species of endemic flora and fauna, the Cuatrociénegas Basin (CCB), Coahuila, NE Mexico, is an extremely important area for conservation studies. However, the palaeoenvironment of this unique area has been relatively neglected. Here, pollen data are presented alongside U-series dating and 14C AMS dating techniques from a 15-m sediment core taken from Poza Tierra Blanca in the CCB. These data suggest the CCB contains palaeoenvironmental information spanning at least the late Pleistocene (84.5 ka BP) to the present and has undergone extensive environmental change, possibly controlled by stadial–interstadial cycles. The CCB is currently functioning as a hydrologically closed system, established around 4 ka BP synchronously with regional drying of the Chihuahuan Desert. Pollen data suggest similar closed hydrology conditions from ~33 to 23.13 ka BP – before the onset of full glacial conditions at the LGM. Hydrologically open system characteristics with a dominance of wetter, winter monsoon climate punctuate the long-term record. The wetter conditions observed in these units appear to have facilitated the downslope movement of montane taxa and the expansion of wetland taxa. These data illustrate that novel vegetation assemblages are not just products of deglaciation but represent the interaction of the individualistic response of taxa with the unique climate spaces formed by millennial-scale variability during both glacial and interglacial times. Journal Article The Holocene 29 3 457 466 SAGE Publications 0959-6836 1477-0911 1 3 2019 2019-03-01 10.1177/0959683618816490 http://dx.doi.org/10.1177/0959683618816490 COLLEGE NANME Geography COLLEGE CODE SGE Swansea University 2023-05-31T11:14:50.5409393 2019-01-29T15:13:19.6413824 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Geography Thomas A Minckley 1 Nicholas Felstead 0000-0001-6369-6832 2 Silvia Gonzalez 3 0048618-04022019093726.pdf 48618.pdf 2019-02-04T09:37:26.3330000 Output 887975 application/pdf Accepted Manuscript true 2019-02-03T00:00:00.0000000 true eng
title Novel vegetation and establishment of Chihuahuan Desert communities in response to late Pleistocene moisture availability in the Cuatrociénegas Basin, NE Mexico
spellingShingle Novel vegetation and establishment of Chihuahuan Desert communities in response to late Pleistocene moisture availability in the Cuatrociénegas Basin, NE Mexico
Nicholas Felstead
title_short Novel vegetation and establishment of Chihuahuan Desert communities in response to late Pleistocene moisture availability in the Cuatrociénegas Basin, NE Mexico
title_full Novel vegetation and establishment of Chihuahuan Desert communities in response to late Pleistocene moisture availability in the Cuatrociénegas Basin, NE Mexico
title_fullStr Novel vegetation and establishment of Chihuahuan Desert communities in response to late Pleistocene moisture availability in the Cuatrociénegas Basin, NE Mexico
title_full_unstemmed Novel vegetation and establishment of Chihuahuan Desert communities in response to late Pleistocene moisture availability in the Cuatrociénegas Basin, NE Mexico
title_sort Novel vegetation and establishment of Chihuahuan Desert communities in response to late Pleistocene moisture availability in the Cuatrociénegas Basin, NE Mexico
author_id_str_mv 1f9e71499a69cbf9b18962bc2bb6c39e
author_id_fullname_str_mv 1f9e71499a69cbf9b18962bc2bb6c39e_***_Nicholas Felstead
author Nicholas Felstead
author2 Thomas A Minckley
Nicholas Felstead
Silvia Gonzalez
format Journal article
container_title The Holocene
container_volume 29
container_issue 3
container_start_page 457
publishDate 2019
institution Swansea University
issn 0959-6836
1477-0911
doi_str_mv 10.1177/0959683618816490
publisher SAGE Publications
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Geography{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Geography
url http://dx.doi.org/10.1177/0959683618816490
document_store_str 1
active_str 0
description With over 200 pools, lakes and rivers supporting over 70 species of endemic flora and fauna, the Cuatrociénegas Basin (CCB), Coahuila, NE Mexico, is an extremely important area for conservation studies. However, the palaeoenvironment of this unique area has been relatively neglected. Here, pollen data are presented alongside U-series dating and 14C AMS dating techniques from a 15-m sediment core taken from Poza Tierra Blanca in the CCB. These data suggest the CCB contains palaeoenvironmental information spanning at least the late Pleistocene (84.5 ka BP) to the present and has undergone extensive environmental change, possibly controlled by stadial–interstadial cycles. The CCB is currently functioning as a hydrologically closed system, established around 4 ka BP synchronously with regional drying of the Chihuahuan Desert. Pollen data suggest similar closed hydrology conditions from ~33 to 23.13 ka BP – before the onset of full glacial conditions at the LGM. Hydrologically open system characteristics with a dominance of wetter, winter monsoon climate punctuate the long-term record. The wetter conditions observed in these units appear to have facilitated the downslope movement of montane taxa and the expansion of wetland taxa. These data illustrate that novel vegetation assemblages are not just products of deglaciation but represent the interaction of the individualistic response of taxa with the unique climate spaces formed by millennial-scale variability during both glacial and interglacial times.
published_date 2019-03-01T11:14:49Z
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