Hydrochory, seed availability and species diversity in riparian landscapes
Aim of the present thesis was to analyse hydrochory (dispersal by water), its partial processes and their effects on species diversity in riparian landscapes. Single steps of hydrochorous dispersal (seed transport, deposition, germination and establishment) were regarded for the colonisation of riparian habitats with respect to their function as seed source as well as ecological filter. Quality, quantity and germination ability of seeds transported in the river or deposited with sediments or drift lines took centre stage in the investigations. Also the seasonal dynamic of hydrochorous transport and coherences with (extreme) flooding events as well as (morphological and ecological) species traits, which are assumed to enhance species ability for hydrochorous seed dispersal, were investigated.