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Saxicolous and terricolous lichens from the foothills of northern Oman

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To date, 36 species of lichens have been recorded from the Sultanate of Oman, a rather short list in view of the number of potential suitable habitats. During a field trip to the foothills of northern Oman, twenty-four morphologically distinct taxa were found, 20 of which have been positively determined to specific level. Seventeen of these species are new records for the country. The majority of species (13) are cyanobacterial lichens. Most species occurred on compacted soil, mainly in partially shaded habitats such as in crevices in rocks, but occasionally, some species were found in sun-exposed situations on open ground (Heppia adglutinata). A few species were found growing on limestone rock. All species recorded during this study have been found in various countries of the Arabian Peninsula, and a marked similarity is evident with the lichen flora of southern Yemen.

Bislang waren Vorkommen von lediglich 36 Flechtenarten aus dem Sultanat Oman bekannt. Die Zahl erscheint klein in Anbetracht der Vielfalt der potentiellen Lebensräume. Im Zuge von Feldarbeiten im Hügelland des nördlichen Omans konnten nun 24 Flechten nachgewiesen und 20 davon bis zur Art bestimmt werden. 17 Arten sind Neufunde für das Sultanat Oman. Es dominierten cyanobakterielle Flechten. Bevorzugte Habitate waren Bodenkrusten in zum Teil beschatteten Felslücken. Gelegentlich wurden auch offene, sonnenexponierte Bodenkrusten besiedelt (Heppia adglutinata). Einige wenige Arten kamen direkt auf Kalkstein vor. Alle Flechten, die im Rahmen der vorliegenden Studie gefunden wurden, waren bereits aus verschiedenen Teilen der Arabischen Halbinsel bekannt. Es bestehen v.a. aber markante Übereinstimmungen in der Artenzusammensetzung mit der Flechtenflora des südlichen Jemen.
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Document Type: Research Article

Publication date: August 1, 2002

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  • Nova Hedwigia is an international journal publishing original, peer-reviewed papers on current issues of taxonomy, morphology, ultrastructure and ecology of all groups of cryptogamic plants, including cyanophytes/cyanobacteria and fungi. The half-tone plates in Nova Hedwigia are known for their high quality, which makes them especially suitable for the reproduction of photomicrographs and scanning and transmission electron micrographs.
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