Für welche Pflanzenarten hat die Schweiz eine internationale Verantwortung?

Abstract

Eggenberg S. and Landolt E. 2006. For which plant species does Switzerland have an international responsibility? Bot. Helv. 116: 119 -133.Priorities in plant species conservation are often based on national Red Lists. In an international context, however, the Red List status (threat) of a species within a limited territory may be misleading because the local disappearance of a species may or may not have serious implications for its global persistence. A second important aspect to consider in species conservation is therefore the responsibility of a country for the species, i.e. the importance of the conservation of local populations for the persistence of the species worldwide. In this contribution, we assess the responsibility of Switzerland for its vascular flora using three biogeographical criteria: (1) the Swiss portion of the species range (high responsibility for species with a large fraction of the range in Switzerland), (2) the degree of endemism (high responsibility for species with a small total range) and (3) the degree of isolation (high responsibility for isolated outposts, which may contain a large part of a species genetic variation). The three criteria were derived for each species from global and European distribution maps, and were then combined to an overall index of responsibility. On this basis, 397 taxa for which Switzerland has an intermediate to high international responsibility were identified. These are almost 15% of the whole vascular flora of Switzerland. Of the 397 taxa, 75% are endemic species of the Alps, and 48% are threatened taxa within Switzerland. The Responsibility List can be used together with the Red List to set priorities in plant conservation or to identify areas of particular floristic value.

Some like it cold: distribution, ecology and phylogeny of Arenaria bernensis Favarger (Caryophyllaceae) from the western Prealps in Switzerland

“…This unique specialization accompanied by its restricted distribution area and the very small number of populations and individuals makes A. bernensis a potential candidate for extinction due to forecasted global warming. Thus, prealpine narrow endemics, such as A. bernensis, are of great importance for understanding the effect of global change on ecosystems in the peripheral Alps and merit further research efforts and a special conservation status (Eggenberg and Landolt 2006).…”

“…Arenaria bernensis Favarger (Caryophyllaceae) is a poorly studied endemic taxon occurring exclusively in the western Prealps (Eggenberg and Landolt 2006;Landolt 2006). The presence of A. bernensis and some other endemic and sub-endemic taxa in the western Prealps (e.g., Papaver occidentale, Anacamptis pyramidalis var.…”

Distribution et régression de la petite massette (Typha minima) dans les Alpes

“…C'est le cas par exemple de la Suisse où cette espèce ne reçoit aucune responsabilité internationale en terme de conservation (Eggenberg et Landolt 2006). Trois raisons peuvent expliquer cet état de fait.…”

Global conservation status assessment of the threatened aquatic plant genus Baldellia (Alismataceae): challenges and limitations

“…Faced with low resource availability for conservation activities and with growing management costs for endangered species and habitats, priority setting has become one of the most widely discussed topics in conservation biology (Master 1991;Wilcove and Chen 1998;Marris 2007b). Therefore, many governments and organizations are planning to create new priority lists of endangered species while taking their global conservation status into consideration (Welk 2001;Eggenberg and Landolt 2006). Such global estimation is not simple, and scientists as well as private and governmental agencies lack essential knowledge of target species (Rodrigues 2006;Kozlowski 2008).…”