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globalchange > 过去全球变化的重建

DOI:	10.1371/journal.pone.0132091
论文题名:	Biogeography of Mediterranean Hotspot Biodiversity: Re-Evaluating the 'Tertiary Relict' Hypothesis of Macaronesian Laurel Forests
作者:	Paulina Kondraskov; Nicole Schütz; Christina Schüßler; Miguel Menezes de Sequeira; Arnoldo Santos Guerra; Juli Caujapé-Castells; Ruth Jaén-Molina; Águedo Marrero-Rodríguez; Marcus A. Koch; Peter Linder; Johanna Kovar-Eder; Mike Thiv
刊名:	PLOS ONE
ISSN:	1932-6203
出版年:	2015
发表日期:	2015-7-14
卷:	10, 期:7
语种:	英语
英文关键词:	Forests ; Phylogenetic analysis ; Pleistocene epoch ; Paleogenetics ; Pliocene epoch ; Miocene epoch ; Phylogenetics ; Fossils
英文摘要:	The Macaronesian laurel forests (MLF) are dominated by trees with a laurophyll habit comparable to evergreen humid forests which were scattered across Europe and the Mediterranean in the Paleogene and Neogene. Therefore, MLF are traditionally regarded as an old, 'Tertiary relict' vegetation type. Here we address the question if key taxa of the MLF are relictual. We evaluated the relict hypothesis consulting fossil data and analyses based on molecular phylogenies of 18 representative species. For molecular dating we used the program BEAST, for ancestral trait reconstructions BayesTraits and Lagrange to infer ancestral areas. Our molecular dating showed that the origins of four species date back to the Upper Miocene while 14 originated in the Plio-Pleistocene. This coincides with the decline of fossil laurophyllous elements in Europe since the middle Miocene. Ancestral trait and area reconstructions indicate that MLF evolved partly from pre-adapted taxa from the Mediterranean, Macaronesia and the tropics. According to the fossil record laurophyllous taxa existed in Macaronesia since the Plio- and Pleistocene. MLF are composed of species with a heterogeneous origin. The taxa dated to the Pleistocene are likely not 'Tertiary relicts'. Some species may be interpreted as relictual. In this case, the establishment of most species in the Plio-Pleistocene suggests that there was a massive species turnover before this time. Alternatively, MLF were largely newly assembled through global recruitment rather than surviving as relicts of a once more widespread vegetation. This process may have possibly been triggered by the intensification of the trade winds at the end of the Pliocene as indicated by proxy data.
URL:	http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0132091&type=printable
Citation statistics:
资源类型:	期刊论文
标识符:	http://119.78.100.158/handle/2HF3EXSE/20618
Appears in Collections:	过去全球变化的重建影响、适应和脆弱性科学计划与规划气候变化与战略全球变化的国际研究计划气候减缓与适应气候变化事实与影响

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作者单位:

Botany Department, State Museum of Natural History Stuttgart, Stuttgart, Germany;Dept. Biodiversity und Plant Systematics, University of Heidelberg, Heidelberg, Germany;Botany Department, State Museum of Natural History Stuttgart, Stuttgart, Germany;Botany Department, State Museum of Natural History Stuttgart, Stuttgart, Germany;Dept. Biodiversity und Plant Systematics, University of Heidelberg, Heidelberg, Germany;Universidade da Madeira, Centro de Ciências da Vida, Funchal, Madeira, Portugal;Unidad de Botánico (ICIA), Puerto de la Cruz, Tenerife, Spain;Jardin Botanico Canario;Jardin Botanico Canario;Jardin Botanico Canario;Dept. Biodiversity und Plant Systematics, University of Heidelberg, Heidelberg, Germany;Institute of Systematic Botany, University of Zurich, Zurich, Switzerland;Botany Department, State Museum of Natural History Stuttgart, Stuttgart, Germany;Botany Department, State Museum of Natural History Stuttgart, Stuttgart, Germany

Recommended Citation:

Paulina Kondraskov,Nicole Schütz,Christina Schüßler,et al. Biogeography of Mediterranean Hotspot Biodiversity: Re-Evaluating the 'Tertiary Relict' Hypothesis of Macaronesian Laurel Forests[J]. PLOS ONE,2015-01-01,10(7)

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