Patch distribution and dispersal limitation of four plant species in Swedish semi-natural grasslands |
| |
Authors: | Franzén Daniel Eriksson Ove |
| |
Institution: | (1) Department of Botany, Stockholm University, Stockholm, SE-106 91, Sweden |
| |
Abstract: | This study examined whether the patch distribution of four plant species Agrimonia eupatoria, Carlina vulgaris, Hypochoeris maculata and Plantago media were affected by dispersal limitation. Analysis of the patch size/isolation relationship was combined with a seed sowing
experiment examining the recruitment of the species. Patch size was negatively correlated to isolation in Carlina, Hypochoeris and indicating that dispersal processes might affect the distribution pattern. Patch size of Agrimonia was not correlated, or in one case positively correlated, to isolation. Agrimonia was also the only species among the four where the recruitment not was affected by disturbance treatment or locality. The
recruitment of Carlina, Hypochoeris and Plantago was higher in disturbed plots compared to undisturbed, and the latter two species were also affected by locality. This suggests
that Agrimonia is less sensitive to isolation (and the ongoing fragmentation of the landscape) compared to the other three species, probably
due to better dispersal and recruitment ability. We conclude in a discussion how different management strategies could serve
to maintain viable populations of these species.
This revised version was published online in August 2006 with corrections to the Cover Date. |
| |
Keywords: | Distribution pattern Fragmentation Isolation Management regime Semi-natural grasslands |
本文献已被 SpringerLink 等数据库收录! |
|