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Die Samenbank unterschiedlicher Feuchtgrünland‐Gesellschaften Schleswig‐Holsteins und ihre Bedeutung für den Artenschutz
Author(s) -
Drückhammer A.,
Wried S.
Publication year - 1996
Publication title -
feddes repertorium
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.24
H-Index - 25
eISSN - 1522-239X
pISSN - 0014-8962
DOI - 10.1002/fedr.19961070313
Subject(s) - juncus , vegetation (pathology) , biology , ecology , forestry , agronomy , geography , wetland , medicine , pathology
The seedbank of widespread humid meadowland communities has been examined by means of germination experiments. The entire density of seed amounted between 6000 and 85000 (grains of) seed/mr 2 . On principle there were more species to be found in the seedbanks than in the covering of vegetation. Most species of the actual vegetation were also, registered in the seedbank. Supplementary species appeared, which have not appeared in the stocks of the testing areas. This is explained by their seedbank‐characteristics. Typical humid‐meadows species, which were missing in the rezent vegetation could be detected in the seedpotential as exceptions only. The examined seedbanks are dominated by a few species only. Juncus effusus predominated in almost all sampling areas. The correspondence of the species' spectrum with that of the seedbank is greater in the upper 4,5 cm ground than it is in the following layers. Only a few species show greater amounts of seed in deeper layers than close to the surface. For the restoration of humid meadows with a large number of species the seedbank of the examined stocks offers unfavourable conditions. This is due to its combination of species and the dominations within.