<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><p>The directional element is a local determinant of spatial diversity of flora of a given country, within widely understood geographical elements. In Poland, a country situated in the middle of Europe, most species belong to the transitional element (with no range limit in our country). Besides the transitional element, the directional northern element (with its southern limit in Poland) is present. It can be divided into two distinct groups: species that have their absolute southern range limit in Poland and those that have both southern and northern limits with a significant disjunction in Central Poland. Although they are two different groups, they will be discussed within the combined study. The first one constitutes 1.9% of the directional element, the second one 1.3%. As far as general ranges are concerned, Circumboreal and Eurosiberian species prevail in the first group, with a significant share of the taxa of geographical connective element. European-temperate taxa are the most numerous in the second group. The two above-mentioned groups will also be distinguished by their species belonging to the higher syntaxonomical units. Such a small share of the northern element in the flora of Poland confirms that our country belongs to the Central European Province, where the North-European element is, to a large extent, a relict of the earlier periods of the Holocene.</p></abstract>

The directional element is a local determinant of spatial diversity of flora of a given country, within widely understood geographical elements. In Poland, a country situated in the middle of Europe, most species belong to the transitional element (with no range limit in our country). Besides the transitional element, the directional northern element (with its southern limit in Poland) is present. It can be divided into two distinct groups: species that have their absolute southern range limit in Poland and those that have both southern and northern limits with a significant disjunction in Central Poland. Although they are two different groups, they will be discussed within the combined study. The first one constitutes 1.9% of the directional element, the second one 1.3%. As far as general ranges are concerned, Circumboreal and Eurosiberian species prevail in the first group, with a significant share of the taxa of geographical connective element. European-temperate taxa are the most numerous in the second group. The two above-mentioned groups will also be distinguished by their species belonging to the higher syntaxonomical units. Such a small share of the northern element in the flora of Poland confirms that our country belongs to the Central European Province, where the North-European element is, to a large extent, a relict of the earlier periods of the Holocene.

Directional northern element in the flora of vascular plants of Poland

Institute of Botany, Jagiellonian University, Kopernika 27, 31-501 Kraków, Poland

Biodiversity Research and Conservation

{"article-title":"Directional northern element in the flora of vascular plants of Poland"}

The directional element is a local determinant of spatial diversity of flora of a given country, within widely understood geographical elements. In Poland, a...

Directional northern element in the flora of vascular plants of Poland

Publié en ligne: 20 oct. 2011

Pages: 19 - 26

DOI: https://doi.org/10.2478/v10119-011-0004-z

Mots clés
directional northern element, flora of Poland, vascular plants

This content is open access.

Directional northern element in the flora of vascular plants of Poland

Publié en ligne: 20 oct. 2011

Pages: 19 - 26

DOI: https://doi.org/10.2478/v10119-011-0004-z

Mots clésdirectional northern element, flora of Poland, vascular plants

This content is open access.

Mots clés
directional northern element, flora of Poland, vascular plants