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@article{860330,
author = {Chytrý, Milan and Wild, Jan and Pyšek, Petr and Tichý, Lubomír and Danihelka, Jiří and Knollová, Ilona},
article_location = {Praha},
article_number = {3},
keywords = {altitude; archaeophyte; distribution; exotic species; habitat types; invasive species; land cover; neophyte; non-native species; plant community},
language = {eng},
issn = {0032-7786},
journal = {Preslia},
title = {Maps of the level of invasion of the Czech Republic by alien plants},
url = {http://www.sci.muni.cz/botany/chytry/Chytry_etal2009_Preslia.pdf},
volume = {81},
year = {2009}
}
TY - JOUR
ID - 860330
AU - Chytrý, Milan - Wild, Jan - Pyšek, Petr - Tichý, Lubomír - Danihelka, Jiří - Knollová, Ilona
PY - 2009
TI - Maps of the level of invasion of the Czech Republic by alien plants
JF - Preslia
VL - 81
IS - 3
SP - 187-207
EP - 187-207
PB - Česká botanická společnost
SN - 00327786
KW - altitude
KW - archaeophyte
KW - distribution
KW - exotic species
KW - habitat types
KW - invasive species
KW - land cover
KW - neophyte
KW - non-native species
KW - plant community
UR - http://www.sci.muni.cz/botany/chytry/Chytry_etal2009_Preslia.pdf
N2 - A series of maps showing the level of invasion of the Czech Republic by alien plants was developed based on a quantitative assessment of the level of invasion of 35 terrestrial habitat types at different altitudes. The levels of invasion were quantified for 18,798 vegetation plots, using two measures: proportion of the species that are aliens and total cover of alien species. Separate assessments were made for archaeophytes and neophytes. Within each habitat, the level of invasion was related to altitude using generalized linear models. The level of invasion, depending on the measure used, decreased with altitude in 16 out of 20 habitats for archaeophytes and 18 out of 23 for neophytes. In two habitats, one measure of the level of invasion increased with altitude for archaeophytes. The values of the level of invasion predicted by generalized linear models for particular combinations of habitats and altitudes were projected onto a land-cover map and digital elevation map of the country. Four maps showing the level of invasion were produced, based on the proportion of the species that are archaeophytes or neophytes, and cover of archaeophytes and neophytes. The maps show that both archaeophytes and neophytes are most common in lowland agricultural and urban areas, whereas they are sparsely represented in mountainous areas. At middle altitudes, agricultural areas are more invaded than forested areas. Outside agricultural and urban areas, high levels of invasion are found especially in lowland sandy areas and river corridors.
ER -
CHYTRÝ, Milan, Jan WILD, Petr PYŠEK, Lubomír TICHÝ, Jiří DANIHELKA and Ilona KNOLLOVÁ. Maps of the level of invasion of the Czech Republic by alien plants. \textit{Preslia}. Praha: Česká botanická společnost, 2009, vol.~81, No~3, p.~187-207. ISSN~0032-7786.
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