Katalog - Lichenological literature

2209

Knoph J.-G. & Leuckert C. (1997): Chemotypes and distribution patterns of the non-saxicolous species of Lecidella (Lecanoraceae, Lecanorales), Bibliotheca Lichenologica, 68: 129-134

The chemistry and geographical distribution of the non-saxicolous species of Lecidella are reviewed. The genus is characterised chemically by the abundant occurrence of chlorinated xanthones. The chemotypes of the taxa are listed. Although most species occur in both hemispheres, several species are restricted to either the Northern or Southern Hemisphere. The centre of diversity of non-saxicolous species of Lecidella is in the Northern Hemisphere. Five new combinations are proposed: Lecidella … Read more...

2208

Hestmark G. (1997): Species diversity and reproductive strategies in the family Umbilicariaceae on high equatorial mountains - with remarks on global patterns, Bibl. Lichenol., 68: 195-202

The species diversity of the family Umbilicariaceae on the equatorial high mountains of South America and Africa is comparatively low. The northern hemisphere at intermediate latitudes has by far the greatest number of species. Around the Equator there is a marked reduction in the diversity. At intermediate southern latitudes it rises slightly again and then falls towards the continental Antarctic. These diversity gradients mainly seem to reflect the latitudinal differences in area of dry land and … Read more...

2207

Grube M. & Matzer M. (1997): Taxonomic concepts of lichenicolous Arthonia species, Bibliotheca Lichenologica, 68: 1-17

Taxonomic concepts of lichenicolous Arthonia species are presented. Species taxonomy is based on a range of 'new' and traditional characters. The potential of epifluorescence- and confocal laser scanning microscopy for the evaluation of new characters and a better circumscription of species is emphasized. Together with their lichenized relatives, more closely related lichenicolous Arthonia species are assigned to species groups with putative monophyletic origin. This offers a more natural classification … Read more...

2206

Glenn M. G. & Webb S. L. (1997): Lichens as indicators of forest integrity, Bibl. Lichenol., 68: 155-164

The species richness and abundance of corticolous lichens was studied as a function of distance from an anthropogenic edge, in three forest types. Lichens and light were sampled systematically in transects from the edge to 45 m into the interior, in natural forests of Pinus resinosa, P. banks iana and in hardwood forests in NW Minnesota, and in two hardwood forests 100 km from New York City. Three-fold greater species richness per tree in MN, compared to the East is likely due to air pollution. Light … Read more...

2205

Dietrich M. & Scheidegger C. (1997): A representative survey of frequency of epiphytic lichens at the regional and national levels and its use for the red list of Switzerland, Bibl. Lichenol., 68: 145-154

Consistency and objectivity in red lists are difficult to achieve. Therefore, the new IUCN conservation categories focus on the actual decline of populations using a probabilistic analysis. The application of these categories however, requires information on actual abundance and distribution. As little is known on the population biology of lichens, a national inventory is being carried out in order to assess representative data on frequency and distribution of all species for the official, regionalized … Read more...

2204

Diederich P. (1997): Lichenicolous fungi in the tropics, Bibl. Lichenol., 68: 215-221

The tropical lichenicolous fungi are poorly known. Recent studies in Papua New Guinea show that this biological group of fungi is well represented in the tropics, but most common at higher altitudes or on foliicolous lichens. Most species recorded in the tropics are either cosmopolitan, or they grow on hosts restricted to the tropics Read more...

2203

Cengia-Sambo M. (1931): Il microclima di una valle alpina attraverso i licheni. Osservazioni fitogeografiche nella Campagna lichenologica in Val Badia, Archivio Botanico, 8(3-4): 193-206

2202

Cengia-Sambo M. (1933): Fragmenta Lichenologica II. Una nueva sezione del Gen. Caloplaca Th.Fr. Ed altre entita nuove, Nuovo Giornale Botanico Italiano, 40: 281-287

2201

Cengia-Sambo M. (1937): Osservazioni lichenologiche sul gruppo del M. Ferrato, Nuovo Giornale Botanico Italiano, 44: 1-17

2200

Cengia-Sambo M. (1937): Contributo alla conoscenza dei licheni dell A.O., Atti delTerzo di Studi Coloniali, 15: 68-75