Abstract

New Caledonia is a global biodiversity hotspot known for its metal hyperaccumulator plants. X-ray fluorescence technology (XRF) has enabled non-destructive and quantitative determination of elemental concentrations in herbarium specimens from the ultramafic flora of the island. Specimens belonging to six major hyperaccumulator families (Cunoniaceae, Phyllanthaceae, Salicaceae, Sapotaceae, Oncothecaceae and Violaceae) and one to four specimens per species of the remaining ultramafic taxa in the herbarium were measured. XRF scanning included a total of c. 11 200 specimens from 35 orders, 96 families, 281 genera and 1484 species (1620 taxa) and covered 88.5% of the ultramafic flora. The study revealed the existence of 99 nickel hyperaccumulator taxa (65 known previously), 74 manganese hyperaccumulator taxa (11 known previously), eight cobalt hyperaccumulator taxa (two known previously) and four zinc hyperaccumulator taxa (none known previously). These results offer new insights into the phylogenetic diversity of hyperaccumulators in New Caledonia. The greatest diversity of nickel hyperaccumulators occur in a few major clades (Malphigiales and Oxalidales) and families (Phyllanthaceae, Salicaceae, Cunoniaceae). In contrast, manganese hyperaccumulation is phylogenetically scattered in the New Caledonian flora.

中文翻译：

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勘误表：亚马逊森林之外：亚马逊热带稀树草原的生物地理和植物关系

摘要

新喀里多尼亚是全球生物多样性热点，以其金属超蓄积植物而闻名。X射线荧光技术（XRF）使该岛超镁铁质植物区系的标本室标本中的元素浓度得以无损和定量测定。测量了标本中属于六个主要超蓄积家族（杜鹃花科，菊科，水杨科，沙棘科，菊苣科和堇菜科）的标本，每种标本中每种剩余的超镁铁生物分类的一到四个标本被测量。XRF扫描共包括Ç。来自35个目，96个科，281属和1484个物种（1620个分类单元）的11200个标本覆盖了88.5％的超镁铁质菌群。研究发现存在99种镍超蓄积类群（先前已知65种），74种锰超蓄积类群（先前已知11种），8种钴超蓄积类群（先前已知两种）和4种锌超蓄积类群（先前未知）。这些结果提供了新喀里多尼亚超蓄积系统发生多样性的新见解。镍超蓄积物的最大多样性出现在几个主要进化枝（Malphigiales和Oxalidales）和家族（菊科，柳柳科，木犀科）中。相反，锰的过度积累在系统上散布在新喀里多尼亚的植物区系中。