Date:10/7/2011

eophytes, i.e. alien species introduced since the beginning of Neolithic agriculture up to 1500 A. D., are affected positively by the extent of arable land that was in place at the time of the reserve establishment at low altitudinal ranges. Though it may be questioned whether species of alien origin should be a part of red lists, endangered archaeophytes are perceived by botanists as elements of local nature, typical of traditional cultural landscapes in Europe and considered as species of cultural and historical importance. This suggests that for endangered archaeophytes it might have been difficult to adapt to changing agricultural practices, and shrubland might act as a refugium for them.

Forty-six of the 155 neophyte species (introduced after 1500 A.D.) recorded in the reserves are classified as invasive. The reserves thus harbour 67% of the 69 invasive neophytes recorded in the country, and particularly warning is that among the most invasive species are many shrubs and trees, a life form that is known to account for widespread invasions with high impacts. The results thus strongly suggest that in Prague nature reserves there is a warning potential for future invasions.

'/>"/>

Contact: Vojtech Jarosik jarosik@cesnet.cz 420-221-951-854 Pensoft Publishers Source:Eurekalert

0 GOOD

Page: 1 2
Related biology news :

1. Sirtris review of sirtuin therapeutics for diseases of aging in Nature Reviews Drug Discovery
2. Extreme nature helps scientists design nano materials
3. Nature study demonstrates that bacterial clotting depends on clustering
4. Nature Medicine study shows Peregrines bavituximab can cure lethal virus infections
5. Unifying the animate and the inanimate designs of nature
6. CIC Teams With Industry Leader iPipeline to Provide Electronic Signature Platform to the Nations Top Insurance Carriers
7. Researchers find natures shut-off switch for cellulose production
8. Researchers push nature beyond its limits to create higher-density biofuels
9. Scientists make strides toward defining genetic signature of Alzheimers disease
10. New genetic markers for ulcerative colitis identified, researchers report in Nature Genetics
11. CIC to Host Webinar Featuring Independent Research Firm: Enabling Straight Through Processing - Why the Insurance Industry Needs Electronic Signature Technology