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dc.contributor.authorHobohm, Carsten
dc.contributor.authorJanišová, Monika
dc.contributor.authorSteinbauer, Manuel
dc.contributor.authorLandi, Sara
dc.contributor.authorField, Richard
dc.contributor.authorVanderplank, Sula
dc.contributor.authorBeierkuhnlein, Carl
dc.contributor.authorGrytnes, John-Arvid
dc.contributor.authorVetaas, Ole Reidar
dc.contributor.authorFidelis, Alessandra
dc.contributor.authorde Nascimento, Lea
dc.contributor.authorClark, Vincent Ralph
dc.contributor.authorFernández-Palacios, José María
dc.contributor.authorFranklin, Scott
dc.contributor.authorGuarino, Riccardo
dc.contributor.authorHuang, Jihong
dc.contributor.authorKrestov, Pavel V.
dc.contributor.authorMa, Keping
dc.contributor.authorOnipchenko, Vladimir G.
dc.contributor.authorPalmer, Michael W.
dc.contributor.authorFragomeni Simon, Marcelo
dc.contributor.authorStolz, Christian
dc.contributor.authorChiarucci, Alessandro
dc.PublishedHobohm C, Janišová M, Steinbauer M, Landi S, Field R, Vanderplank, Beierkuhnlein C, Grytnes J, Vetaas OR, Fidelis A, de Nascimento L, Clark, Fernández-Palacios JM, Franklin, Guarino R, Huang, Krestov PV, Ma K, Onipchenko VG, Palmer MW, Fragomeni Simon, Stolz, Chiarucci A. Global endemics-area relationships of vascular plants. Perspectives in Ecology and Conservation (PECON). 2019;17(2):41-49eng
dc.description.abstractEndemics–Area Relationships (EARs) are fundamental in theoretical and applied biogeography for understanding distribution patterns and promoting biodiversity conservation. However, calculating EARs for vascular plant species from existing data is problematic because of biased knowledge of endemic species distributions and differences between taxonomies. We aimed to overcome these challenges by developing a new standardized global dataset based on expert knowledge to produce a set of global EARs. We developed a nested circle design, with grain sizes of 104, 105, 106, 107, and 108 km2, respectively, and a global distribution of plots based on a stratified random scheme. The number of vascular plant species endemic to each circle was then estimated independently by five experts randomly chosen from a pool of 23, as both a minimum and a maximum value (lower and upper bounds of the estimation), taking into account the limitations of current knowledge and varied species concepts in existing taxonomies. This procedure resulted in a dataset of 3000 expert estimates. Based on the data, we produced three global EARs for endemic species richness using minimum, maximum and average estimates. As a validation, we used all three models to extrapolate to the entire world, producing estimates of 284,493 (minimum), 398,364 (maximum) and 312,243 (average) vascular plant species. These figures conform to the range of taxonomists’ estimates. From the models, we calculated the average area needed to harbour a single endemic species as 12,875 km2 (range 9675–20,529). The global vascular plant EARs we calculated represent the first standardized, quantitative expectations of plant endemism at any given scale (sampling unit size). These EARs allow us to provide a clear answer to a long-standing but elusive biogeographical question: how to assess whether any area on the surface of the Earth is rich or poor in endemics relative to the average.en_US
dc.rightsAttribution CC BY-NC-NDeng
dc.titleGlobal endemics-area relationships of vascular plantsen_US
dc.typePeer reviewed
dc.typeJournal article
dc.rights.holderCrown Copyright 2019en_US
dc.source.journalPerspectives in Ecology and Conservation (PECON)

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