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Recruitment and facilitation in Pinus hartwegii, a Mexican alpine treeline ecotone, with potential responses to climate warming

Claudia C. Astudillo-Sánchez, Mike Fowler Orcid Logo, José Villanueva-Díaz, Angel R. Endara-Agramont, Leroy Soria-Díaz

Trees

Swansea University Author: Mike Fowler Orcid Logo

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DOI (Published version): 10.1007/s00468-019-01844-3

Abstract

Alpine treelines in Mexico are represented by high-elevation forests dominated by P. hartwegii Ldl. To address the degree to which the presence of suitable microsite facilitators are factors for successful recruitment within the treeline ecotone of P. hartwegii and modulate their responses to climat...

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Published in: Trees
ISSN: 0931-1890 1432-2285
Published: 2019
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URI: https://cronfa.swan.ac.uk/Record/cronfa49972
first_indexed 2019-04-15T09:29:09Z
last_indexed 2019-06-10T20:52:54Z
id cronfa49972
recordtype SURis
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spelling 2019-06-10T16:32:47.1903992 v2 49972 2019-04-11 Recruitment and facilitation in Pinus hartwegii, a Mexican alpine treeline ecotone, with potential responses to climate warming a3a29027498d4b43a3f082a0a5ba16b4 0000-0003-1544-0407 Mike Fowler Mike Fowler true false 2019-04-11 BGPS Alpine treelines in Mexico are represented by high-elevation forests dominated by P. hartwegii Ldl. To address the degree to which the presence of suitable microsite facilitators are factors for successful recruitment within the treeline ecotone of P. hartwegii and modulate their responses to climate warming, year of natural tree establishment, number of trees recruited, and the presence of shelter elements at different exposures of Monte Tlaloc (in the Trans-Mexican Volcanic System) were recorded. For tree recruitment and microsite facilitation we recorded each tree and the type of potentially protective elements that may improve microsite conditions within a total of 32 circular plots (r = 18 m) in the alpine treeline ecotone (above 4000 m). Temperatures for Monte Tlaloc at 4000 m were estimated using the thermal gradient for the study area, and standard dendrochronological methods and a regression model were used to date tree recruitment. Vector generalized linear models show that maximum growing season temperatures have significantly influenced the temporal pattern of tree recruitment in this system over the past 50 years, but this influence was mediated by the presence (or absence) of specific shelter elements (shrubs, soil depressions, rocks or bare soil) within a specific treeline ecotone exposure, also shaping the spatial pattern of tree recruitment. The response of the treeline ecotone to climate warming at local scales is qualitatively modified by the presence of microscale features, requiring sufficient soil moisture to be available on the site of recruitment. Journal Article Trees 0931-1890 1432-2285 31 12 2019 2019-12-31 10.1007/s00468-019-01844-3 COLLEGE NANME Biosciences Geography and Physics School COLLEGE CODE BGPS Swansea University 2019-06-10T16:32:47.1903992 2019-04-11T13:35:52.9627105 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Biosciences Claudia C. Astudillo-Sánchez 1 Mike Fowler 0000-0003-1544-0407 2 José Villanueva-Díaz 3 Angel R. Endara-Agramont 4 Leroy Soria-Díaz 5 0049972-21052019205349.pdf AstudilloSanchez_etal_2019_Trees_authorversion.pdf 2019-05-21T20:53:49.2600000 Output 1530702 application/pdf Accepted Manuscript true 2020-03-26T00:00:00.0000000 true eng
title Recruitment and facilitation in Pinus hartwegii, a Mexican alpine treeline ecotone, with potential responses to climate warming
spellingShingle Recruitment and facilitation in Pinus hartwegii, a Mexican alpine treeline ecotone, with potential responses to climate warming
Mike Fowler
title_short Recruitment and facilitation in Pinus hartwegii, a Mexican alpine treeline ecotone, with potential responses to climate warming
title_full Recruitment and facilitation in Pinus hartwegii, a Mexican alpine treeline ecotone, with potential responses to climate warming
title_fullStr Recruitment and facilitation in Pinus hartwegii, a Mexican alpine treeline ecotone, with potential responses to climate warming
title_full_unstemmed Recruitment and facilitation in Pinus hartwegii, a Mexican alpine treeline ecotone, with potential responses to climate warming
title_sort Recruitment and facilitation in Pinus hartwegii, a Mexican alpine treeline ecotone, with potential responses to climate warming
author_id_str_mv a3a29027498d4b43a3f082a0a5ba16b4
author_id_fullname_str_mv a3a29027498d4b43a3f082a0a5ba16b4_***_Mike Fowler
author Mike Fowler
author2 Claudia C. Astudillo-Sánchez
Mike Fowler
José Villanueva-Díaz
Angel R. Endara-Agramont
Leroy Soria-Díaz
format Journal article
container_title Trees
publishDate 2019
institution Swansea University
issn 0931-1890
1432-2285
doi_str_mv 10.1007/s00468-019-01844-3
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 - Biosciences{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Biosciences
document_store_str 1
active_str 0
description Alpine treelines in Mexico are represented by high-elevation forests dominated by P. hartwegii Ldl. To address the degree to which the presence of suitable microsite facilitators are factors for successful recruitment within the treeline ecotone of P. hartwegii and modulate their responses to climate warming, year of natural tree establishment, number of trees recruited, and the presence of shelter elements at different exposures of Monte Tlaloc (in the Trans-Mexican Volcanic System) were recorded. For tree recruitment and microsite facilitation we recorded each tree and the type of potentially protective elements that may improve microsite conditions within a total of 32 circular plots (r = 18 m) in the alpine treeline ecotone (above 4000 m). Temperatures for Monte Tlaloc at 4000 m were estimated using the thermal gradient for the study area, and standard dendrochronological methods and a regression model were used to date tree recruitment. Vector generalized linear models show that maximum growing season temperatures have significantly influenced the temporal pattern of tree recruitment in this system over the past 50 years, but this influence was mediated by the presence (or absence) of specific shelter elements (shrubs, soil depressions, rocks or bare soil) within a specific treeline ecotone exposure, also shaping the spatial pattern of tree recruitment. The response of the treeline ecotone to climate warming at local scales is qualitatively modified by the presence of microscale features, requiring sufficient soil moisture to be available on the site of recruitment.
published_date 2019-12-31T04:43:22Z
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score 11.390808

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