IMIS | Flanders Marine Institute
 

Flanders Marine Institute

Platform for marine research

IMIS

Publications | Institutes | Persons | Datasets | Projects | Maps
[ report an error in this record ]basket (0): add | show Print this page

Diurnal, horizontal and vertical dispersal of kelp-associated fauna
Jørgensen, N.M.; Christie, H.C. (2003). Diurnal, horizontal and vertical dispersal of kelp-associated fauna, in: Jones, M.B. et al. Migrations and dispersal of marine organisms: Proceedings of the 37th European Marine Biology Symposium held in Reykjavik, Iceland, 5-9 August 2002. Developments in Hydrobiology, 174: pp. 69-76. https://dx.doi.org/10.1007/978-94-017-2276-6_9
In: Jones, M.B. et al. (2003). Migrations and dispersal of marine organisms: Proceedings of the 37th European Marine Biology Symposium held in Reykjavik, Iceland, 5-9 August 2002. Reprinted from Hydrobiologia 503. Developments in Hydrobiology, 174. Springer Science+Business Media: Dordrecht. ISBN 978-90-481-6480-6; e-ISBN 978-94-017-2276-6. XII, 262 pp. https://dx.doi.org/10.1007/978-94-017-2276-6, more
In: Dumont, H.J. (Ed.) Developments in Hydrobiology. Kluwer Academic/Springer: The Hague; London; Boston; Dordrecht. ISSN 0167-8418, more
Related to:
Jørgensen, N.M.; Christie, H.C. (2003). Diurnal, horizontal and vertical dispersal of kelp-associated fauna. Hydrobiologia 503: 69-76. https://dx.doi.org/10.1023/B:HYDR.0000008491.89382.e5, more

Available in  Authors 
Document type: Conference paper

Keywords
    Colonization
    Dispersion
    Flora > Weeds > Marine organisms > Seaweeds > Kelps
    Substrata > Artificial substrata
    Temporal variations > Periodic variations > Diurnal variations
    Laminaria hyperborea (Gunnerus) Foslie, 1884 [WoRMS]
    Marine/Coastal

Authors  Top 
  • Jørgensen, N.M.
  • Christie, H.C.

Abstract
    The kelp Laminaria hyperborea is host for a rich fauna of mobile invertebrates. Dispersal patterns of these animals may be crucial for their availability to visual predators like fish, which are known to search for food in these productive habitats. Diurnal, horizontal and vertical dispersal within and out of the kelp forest were studied by analysing colonization of artificial substrata placed among kelps. The species composition of the fauna was different on three parts of the kelp: lamina, stipes (with epiphytes) and holdfast. The artificial substrata were colonized mainly by species associated with kelp. More species and individuals colonized the artificial substrata at night than during the day. The most abundant faunal groups on the kelps and the artificial substrata were amphipods and gastropods. Both groups dispersed at a significantly higher rate at night than during the day. Rapid horizontal dispersal out of the kelp forest was found. The artificial substrata were also colonized quickly by kelp fauna at all vertical levels inside and above the kelp forest. However, species associated with the kelp holdfast tended to disperse close to the bottom, while stipe-associated fauna moved through all parts of the kelp forest and even above the canopy layer. A high dispersal rate appears common amongst the mobile species living on kelp and seems to be advantageous, despite the risks involved in emigrating from the habitat and being exposed to predators. Higher activity at night may reduce availability to predators.

All data in the Integrated Marine Information System (IMIS) is subject to the VLIZ privacy policy Top | Authors