Опубликована: Янв. 1, 2024
Riparian zones fulfil many ecosystem functions and are biodiversity hotspots, as they rich in plant species facilitate other species. They largely shaped by the flow regime, which scours away vegetation supplies propagules for regrowth. Water-borne seed dispersal, hydrochory, is an important building block of riparian communities. These can become richer throughout catchments, seeds may accumulate with distance travelled. Seeds, however, do not get deposited equally across lakes, slow-flowing reaches rapids, main geomorphological domains northern Swedish streams. Their respective types hydrogeomorphological stress co-determine establish come to form vegetation. In this thesis, I have studied how different human activities affect vegetation, dispersal environmental filtering communities boreal zones. Human both regime local habitat, but their combined effects unclear. used trap data, soil bank samples inventories study geomorphology composition. Hydrochory occurs year-round free-flowing rivers, most during peak flow. That difference larger rapids than especially at greater from waterline. banks quite composition When compared two, neither followed clear accumulation patterns or was linked variation. a catchment, found higher richness increasing stream order, differences between regulated river were limited. Degree regulation tributary remediation played role there, could be taken into account when designing management conservation.
Язык: Английский