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Provider: Czech digital library/Česká digitální knihovna - Institution: Academy of Sciences Library/Knihovna Akademie věd ČR - Data provided by Europeana Collections- All metadata published by ...Europeana are available free of restriction under the Creative Commons CC0 1.0 Universal Public Domain Dedication. However, Europeana requests that you actively acknowledge and give attribution to all metadata sources including Europeana
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Provider: Czech digital library/Česká digitální knihovna - Institution: Academy of Sciences Library/Knihovna Akademie věd ČR - Data provided by Europeana Collections- All metadata published by ...Europeana are available free of restriction under the Creative Commons CC0 1.0 Universal Public Domain Dedication. However, Europeana requests that you actively acknowledge and give attribution to all metadata sources including Europeana
Provider: Czech digital library/Česká digitální knihovna - Institution: Academy of Sciences Library/Knihovna Akademie věd ČR - Data provided by Europeana Collections- All metadata published by ...Europeana are available free of restriction under the Creative Commons CC0 1.0 Universal Public Domain Dedication. However, Europeana requests that you actively acknowledge and give attribution to all metadata sources including Europeana
Recent comprehensive data provided through the DAISIE project (www.europe-aliens.org) have facilitated thedevelopment of the first pan-European assessment of the impacts of alien plants, vertebrates, ...and invertebrates –in terrestrial, freshwater, and marine environments – on ecosystem services. There are 1094 species with documentedecological impacts and 1347 with economic impacts. The two taxonomic groups with the most speciescausing impacts are terrestrial invertebrates and terrestrial plants. The North Sea is the maritime region that suffersthe most impacts. Across taxa and regions, ecological and economic impacts are highly correlated. Terrestrialinvertebrates create greater economic impacts than ecological impacts, while the reverse is true for terrestrialplants. Alien species from all taxonomic groups affect “supporting”, “provisioning”, “regulating”, and “cultural”services and interfere with human well-being. Terrestrial vertebrates are responsible for the greatest range ofimpacts, and these are widely distributed across Europe. Here, we present a review of the financial costs, as the firststep toward calculating an estimate of the economic consequences of alien species in Europe.
Many invasive species are benign in their native region-are there interactions between their key traits and the new habitats that explain invasion success? The giant perennial herb Heracleum ...mantegazzianum is a problematic invader in Europe and is also naturalized in North America. We compared its population structure and reproductive behavior in the native (W. Caucasus) and invaded (Czech Republic) areas in managed (pastures) and unmanaged sites. The age structure of the populations and age at flowering were analyzed using herb-chronology, a method based on counting annual rings in the secondary xylem of roots. The species was strictly monocarpic; most plants in unmanaged sites in the invaded range flowered in the third and fourth yr (maximum 12 yr). In unmanaged habitats, plants from the native range flowered later than those from the invaded range. In both ranges, flowering was delayed in managed sites where the population density was higher and most plants flowered around the fifth year. Reproductive output of individual plants was neither related to population density nor to age at flowering. More favorable climatic conditions in the invaded region, together with increased chances for dispersal in a densely colonized central Europe, seemed to allow the massive invasion. PUBLICATION ABSTRACT
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