Colonisation of kelp imitations by epiphyte and holdfast fauna; a study of mobility patterns |
| |
Authors: | Email author" target="_blank">K?M?NorderhaugEmail author H?Christie E?Rinde |
| |
Institution: | (1) Department of Biology, University of Oslo, P.O. Box 1069, 0316 Oslo, Norway;(2) Norwegian Institute for Nature Research, P.O. Box 736, 0105 Oslo, Norway |
| |
Abstract: | The kelp Laminaria hyperborea provides a habitat for a diverse invertebrate community. Invertebrate abundance is particularly high in the kelp holdfasts
and associated with epiphytes on the stipes. We investigated colonisation patterns of this fauna on artificial substrata (holdfast
and epiphyte mimics) exposed for short time periods in the kelp forest in two seasons, summer and late autumn. Within 7 days,
99 taxa common on natural kelp substratum colonised the artificial substrata in large numbers, demonstrating high mobility
and indicating that there may be a rapid exchange of individuals and species among algae. Gastropods and amphipods were the
most abundant colonisers. In summer, a specific “epiphyte fauna” could be distinguished from a “holdfast fauna”, and species
associated with epiphytes were significantly more abundant on the artificial substrata. Colonisation was more rapid in summer
than in late autumn, which may be related to animal population density. The high dispersal rate can facilitate the interaction
with other communities and with higher trophic levels in the kelp-forest food web.
Published online: 13 August 2002 |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|