Chapter 1: General Introduction ................................. 7
Chapter 2: Dispersal and seed limitation affect diversity and
productivity of montane grasslands .................. 15
Chapter 3: Impact of invertebrate herbivory in grasslands
depends on productivity and species diversity ....... 31
Chapter 4: Interactive effects of mycorrhizae and a
hemiparasite on plant community productivity
and diversity ....................................... 51
Chapter 5: Native plant diversity reduces invasibility in
montane grasslands .................................. 73
Chapter 6: General discussion .................................. 89
Chapter 7: Summary / Zusammenfassung ........................... 97
References .................................................... 105
Appendix ...................................................... 125
Acknowledgements .............................................. 133
Curriculum vitae .............................................. 135
Authors' contributions to the manuscripts ..................... 139
Ehrenwortliche Erklarung ...................................... 141
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