Larson, Daniel
- Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences
Abstract
We evaluated one-sided competition from the floating-leaved plant Nymphoides peltata (non-indigenous in Sweden) on three submerged plant species, Ceratophylluin demersum, Elodea canadensis and Ranunculus circinatus, in a controlled experiment. The three submerged species were allowed to grow for 21 days in the absence of N. peltata and with the species present at densities of approximately 33, 66 and 100% cover. All species retained a positive relative growth rate (RGR) based on length at all N. peltata densities, but responded with negative growth based on weight for several treatments. C. demersum achieved RGR of 0.03 day(-1) in the absence of N. peltata, RGR of 0.02 day(-1) in the lowest N. peltata density but negative RGR in the two denser treatments. E. canadensis responded similarly with RGR of 0.04 day(-1) in the absence of N. peltata, RGR of 0.01 day(-1) in the lowest N. peltata density and negative RGR in the two denser treatments. R. circinatus, on the other hand, never achieved positive RGR based on weight. These results suggest that one-sided competition from floating-leaved plants has a profound effect on the submerged plant community. (c) 2006 Elsevier B.V. All rights reserved
Published in
Aquatic Botany
2007, volume: 86, number: 3, pages: 280-284
Publisher: ELSEVIER SCIENCE BV
SLU Authors
UKÄ Subject classification
Environmental Sciences and Nature Conservation
Fish and Aquacultural Science
Publication identifier
- DOI: https://doi.org/10.1016/j.aquabot.2006.10.007
Permanent link to this page (URI)
https://res.slu.se/id/publ/14001