Diaspore bank

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As a seed bank means all in one location existing keimungsfähigen plant propagation units (will diasporas ) called; for sexually reproducing seed plants , the use of a seed bank is more common; however, it is misleading as it is also used for man-made conservation collections . Diaspores can be of generative ( fruits , seeds , spores ) or vegetative (e.g. shoot parts or rhizomes ) origin. Depending on the species, the diaspores are short (one to two years old) or long-lived (up to several thousand years).

There are several methods of checking the occurrence and abundance of species in the diaspore bank. For example, with the germination method, soil samples are spread out in shallow dishes and the sprouts that then emerge are determined and counted.

Depending on the occurrence and distribution mechanisms of the plants , the diaspores are not evenly distributed in a landscape. The diaspore bank (society) is therefore heterogeneous and spotty in terms of species composition, individual density and thus diversity .

Are common among seed bank and the diasporas of a particular type called, all the while at a particular location overlapping diasporas of various kinds as diasporas society are called.

literature

  • John L. Harper : Population biology of plants . Academic Press, London et al. 1977, ISBN 0-12-325850-2 .
  • Robert L. Simpson, Mary Allessio Leck, V. Thomas Parker: Seed Banks: General Concepts and Methodological Issues. In: Mary Allessio Leck, V. Thomas Parker, Robert L. Simpson (Eds.): Ecology of Soil Seed Banks. Academic Press, San Diego CA et al. 1989, ISBN 0-12-440405-7 , pp. 3-8.
  • Rudolf Schubert , Günther Wagner : Botanical dictionary. Plant names and botanical terms (=  Uni-Taschenbuch . No. 1476 ). 10th edition. Ulmer et al., Stuttgart 1991, ISBN 3-8001-2640-0 .