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- Title
A novel littoral habitat from a riparian invader: implications on stream secondary production and riparian management.
- Authors
Jayawardana, J. M. C. K.
- Abstract
Understanding the functional role of invasive species is important for better management of ecosystems. Exotic willows (Salix spp.) are widespread riparian trees of temperate Australia and New Zealand. Despite being classed as weeds of national significance, little is known of their effects on ecosystem function. Extensive growth of complex willow root mats in streams they infest has created a novel littoral habitat. Spatial and temporal changes of macroinvertebrates in willow root mats and bare bank habitats were examined in three central Victorian rivers to gain an understanding of their effects on this faunal group. Macroinvertebrate richness, abundance, biomass and diversity were significantly higher (p<0.05) in willow root habitats compared to open bank habitats. This suggests willow root mats have created a new niche for macroinvertebrate communities in willow-infested streams in Australia and emphasises the need for concurrent habitat enrichment programs when removal of exotic vegetation takes place.
- Subjects
HABITATS; INTRODUCED species; RIPARIAN areas management; ECOSYSTEM management; WILLOWS; BIODIVERSITY
- Publication
Victorian Naturalist, 2015, Vol 132, Issue 4, p96
- ISSN
0042-5184
- Publication type
Article