The relationship between the seed bank and species composition of plant communities in two British salt marshes
The relationship between the seed bank and species composition of plant communities in two British salt marshes
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DOI:
10.2307/3236080
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发表时间:
1993-08
影响因子:
2.8
通讯作者:
I. Ungar;S. R. J. Woodell
中科院分区:
文献类型:
--
作者:
I. Ungar;S. R. J. Woodell
The composition of the seed bank was compared with that of the above-ground vegetation in two British salt marshes. Vegetation and seed banks were sampled in autumn and spring. There was a relatively low correlation between seed bank and vegetation in most perennial-dominated zones. Percentage annual plant cover was significantly positively correlated to percentage similarity value between vegetation and seed bank. Cluster analysis indicated that the zones domi- nated by annuals and by Suaeda vera on the ungrazed Nod Marsh in Norfolk formed groups between seed bank and vegetation, whereas on the Llanrhidian Marsh in Wales the seed bank of four of the six zones formed a group. bank in either upper or lower marshes (Jefferies, Davy & Rudmik 1981; Davy & Smith 1988). Our aim was to determine the level of correlation between the above-ground plant communities and the seed banks in two differing salt-marsh types in Britain. The relationship between species longevity and seed bank presence was analyzed to determine how close is