Volcanic ash deposition as a selection mechanism towards woodiness

被引：4

作者：

Carl Beierkuhnlein

Manuel Nogales

Richard Field

Ole R. Vetaas

Anna Walentowitz

Frank Weiser

Reinhold Stahlmann

María Guerrero-Campos

Anke Jentsch

Félix M. Medina

Alessandro Chiarucci

机构：

[1] Biogeography, University of Bayreuth, Universitätsstr. 30, Bayreuth

[2] Instituto de Productos Naturales y Agrobiología (IPNA-CSIC), La Laguna, Canary Islands, Tenerife

[3] School of Geography, University of Nottingham, Nottingham

[4] Department of Geography, University of Bergen, Bergen

[5] Área de Medio Ambiente, Gestión y Planeamiento Territorial y Ambiental (GesPlan S. A.), Canary Islands, Tenerife

[6] Disturbance Ecology, University of Bayreuth, Universitätsstr. 30, Bayreuth

[7] Consejería de Medio Ambiente, Cabildo Insular de La Palma, Canary Islands, Santa Cruz de La Palma

[8] BIOME Lab, Department of Biological, Geological & Environmental Sciences, Alma Mater Studiorum—University of Bologna, Bologna

来源：

npj Biodiversity | / 2卷 / 1期

关键词：

D O I：

10.1038/s44185-023-00018-2

中图分类号：

学科分类号：

摘要：

The high proportion of woody plant species on oceanic islands has hitherto been explained mainly by gradual adaptation to climatic conditions. Here, we present a novel hypothesis that such woodiness is adaptative to volcanic ash (tephra) deposition. Oceanic islands are subject to frequent eruptions with substantial and widespread ash deposition on evolutionary time scales. We postulate that this selects for woodiness through an increased ability to avoid burial of plant organs by ash, and to re-emerge above the new land surface. We sense-checked using observations of plant occurrences and distributions on La Palma (Canary Islands) in April 2022, 4 months after the end of the eruptions of the Tajogaite volcano (Cumbre Vieja ridge). In contrast to herbs and grasses, most woody plants persisted and were already in full flower in areas with 10+ cm ash deposition. Remarkably, these persisting woody plants were almost exclusively endemics. © The Author(s) 2023.

引用

共 104 条

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