Abstract
Carici-Genistetea lobelii Klein 1972 corresponds to cyrno-sardinian oromediterranean cushion scrub and related grasslands. In France, this class is only present in Corsica and the syntaxonomic scheme is debated among phytosociologists. The aim of this paper is to highlight the main plant associations of Carici-Genistetea lobelii Klein 1972 and to define the diagnostic species for each phytosociological unit. We compiled 519 vegetation plots and we applied EuropeanVegetationChecklist expert system for the classes of European vegetation to retain only vegetation plots belonging to Carici-Genistetea lobelii. We obtained a dataset with 189 vegetation plots and we classified them with Modified TWINSPAN classification. Our analyses recognized 6 plant associations and 3 sub-associations already described in the literature; and to describe a new alliance corresponding to the supra-mediterranean vegetations (Genistion salzmannii), a new association (Brimeuro fastigiatae-Juniperetum nanae) and its sub-association (alnetosum suaveolentis). For each of them, we identified diagnostic, constant and dominant species and produced their distribution map. Formal definitions were then written for each phytosociological unit (from subassociation to class) and grouped in an expert system to automatically classify the vegetations of Carici-Genistetea lobelii.
Highlights
Corsican oromediterranean cushion-scrubs and related grasslands represent the main plant communities of the mountain landscapes of Corsica (Gamisans 1977, 1979, 1991)
We propose some changes in the syntaxonomic scheme of EuroVegChecklist
According to the recent literature (Jeamonod & Gamisans, 2013; Tison & de Foucault, 2014), Genista lobelii is absent from Corsica; Genista salzmannii is the species that has been retained for Corsica
Summary
Corsican oromediterranean cushion-scrubs and related grasslands represent the main plant communities of the mountain landscapes of Corsica (Gamisans 1977, 1979, 1991). Cervicornis) (Gamisans, 1977; Reymann et al, 2016) This class is debated among phytosociologists, which can be summarised as follows, in chronological order: – L itardière and Malcuit (1926) were the first to assign subalpine and alpine (lower horizon) scrubland and grassland to the Carici caryophylleae-Genistetea lobelii class from a phytosociological point of view. They described the Juniperetum nanae which corresponds to spiny xerophytes vegetation that covers scorched slopes, and they described the Plantaginetum insularis for alpine meso-xeric grasslands. He proposed a single order, the Carici caryophylleae-Genistetalia lobelii, comprising two Mediterranean Botany 42, e68062, 2021
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