Distribution patterns in British and Irish liverworts and hornworts

Autor:	Mark O. Hill, Colin A. Harrower, Christopher D. Preston
Rok vydání:	2011
Předmět:	Scapania undulata biology Phaeoceros laevis Single species Scapania Botany Pellia epiphylla Plant Science biology.organism_classification Moerckia blyttii Phytogeography Anastrepta orcadensis Ecology Evolution Behavior and Systematics
Zdroj:	Journal of Bryology. 33:3-17
ISSN:	1743-2820 0373-6687
DOI:	10.1179/1743282010y.0000000001
Popis:	The 300 species of British and Irish liverworts and hornworts are classified into 10 groups, based on their recorded presence in 10×10 km grid squares (hectads). A two-stage classification (CLUSTASPEC) initially amalgamated single species into clusters and then systematically removed the smallest clusters, redistributing their species until only 10 clusters remained; in the second stage, species were reassigned to the cluster to which they showed the greatest similarity until they all remained stationary. The groups were named after the species with distributions which were most similar to that of the cluster as a whole (Pellia epiphylla, Phaeoceros laevis sens. lat., Cladopodiella fluitans, Lophocolea heterophylla, Scapania undulata, Anastrepta orcadensis, Harpalejeunea molleri, Moerckia blyttii, Scapania degenii, Marsupella condensata). Most groups are nested within at least one other group but the south-eastern L. heterophylla cluster is distinctive. Four groups, Phaeoceros laevis, Cladopodiella fluita...
Databáze:	OpenAIRE
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