7 research outputs found

    Demography and Dispersal Ability of a Threatened Saproxylic Beetle: A Mark-Recapture Study of the Rosalia Longicorn (Rosalia alpina)

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    The Rosalia longicorn or Alpine longhorn (Coleoptera: Cerambycidae) is an endangered and strictly protected icon of European saproxylic biodiversity. Despite its popularity, lack of information on its demography and mobility may compromise adoption of suitable conservation strategies. The beetle experienced marked retreat from NW part of its range; its single population survives N of the Alps and W of the Carpathians. The population inhabits several small patches of old beech forest on hill-tops of the Ralska Upland, Czech Republic. We performed mark-recapture study of the population and assessed its distribution pattern. Our results demonstrate the high mobility of the beetle, including dispersal between hills (up to 1.6 km). The system is thus interconnected; it contained ∼2000 adult beetles in 2008. Estimated population densities were high, ranging between 42 and 84 adult beetles/hectare a year. The population survives at a former military-training ground despite long-term isolation and low cover of mature beech forest (∼1%). Its survival could be attributed to lack of forestry activities between the 1950s and 1990s, slow succession preventing canopy closure and undergrowth expansion, and probably also to the distribution of habitat patches on conspicuous hill-tops. In order to increase chances of the population for long term survival, we propose to stop clear-cuts of old beech forests, increase semi-open beech woodlands in areas currently covered by conifer plantations and active habitat management at inhabited sites and their wider environs

    New geomorphologic regionalization of the Czech republic – 2005

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    In Agency of Nature Conservation and Landscape Protection of Czech Republic decided to create new digital map of geomorphological regions of Czech Republic using ArcView GIS methodology. The scale 1:500 000 was chosen for a new map based on digital map product ArcČR 500. The authors distinguished 10 geomorphological systems, 27 geomorphological subsystems, 93 regions, 268 subregions and 935 wards. The map was printed in colours and will be part of prepared second edition of Geographical Gazetteers of Czech Republic – Lowlands and Mountains and of Landscape Atlas of Czech Republic

    Geomorphologic units of the Czech Republic – new geomorphologic regionalization of state territory

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    In Agency of Nature Conservation and Landscape Protection of Czech Republic decided to create new digital map of geomorphological regions of Czech Republic using ArcView GIS methodology. The scale 1:500 000 was chosen for a new map based on digital map product ArcČR 500. The authors distinguished 10 geomorphological systems, 27 geomorphological subsystems, 93 regions, 268 subregions and 935 wards. The map was printed in colours and will be part of prepared second edition of Geographical Gazetteers of Czech Republic – Lowlands and Mountains and of Landscape Atlas of Czech Republic

    Geomorphological Regions of the Czech Republic 2005: using ArcView GIS Methodology

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    In 2005 was in Agency of Nature Conservation and Landscape Protection of Czech Republic decided to create new digital map of geomorphological regions of Czech Republic using ArcView GIS methodology. Authors distinguished 10 geomorphological systems, 27 geomorphological subsystems, 93 regions, 268 subregions and 935 wards
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