title: A snap shot of the short-term response of crustaceans to macrophyte detritus in the deep Oslofjord.
abstract: A test deployment of a time-lapse camera lander in the deep Oslofjord (431 m) was used to obtain initial information on the response of benthic fauna to macroalgal debris. Three macroalgal species were used on the lander baited plate: Fucus serratus, Saccharina latissima and Laminaria hyperborea and observed during 41.5 hours. The deep-water shrimp Pandalus borealis were attracted to the macroalgae rapidly (3 min after the lander reached the seafloor), followed by amphipods. Shrimp abundances were significantly higher in areas covered by macroalgae compared to the adjacent seafloor and the number of shrimp visiting the macroalgae increased with time. Amphipods arrived 13 hours later and were observed mainly on decaying L. hyperborea. The abundance of amphipods on L. hyperborea increased rapidly, reaching a peak at 31 h after deployment. These initial observations suggest that debris from kelp forests and other macroalgal beds may play an important role in fuelling deep benthic communities in the outer Oslofjord and, potentially, enhance secondary production of commercial species such as P. borealis.
authors.affiliation: Norwegian Institute for Water Research (NIVA), Gaustadalléen 21, NO-0349 Oslo, Norway.
authors.forename: Eva
authors.initials: E
authors.lastname: Ramirez-Llodra
authors.affiliation: Norwegian Institute for Water Research (NIVA), Gaustadalléen 21, NO-0349 Oslo, Norway.
authors.forename: Eli
authors.initials: E
authors.lastname: Rinde
authors.affiliation: Norwegian Institute for Water Research (NIVA), Gaustadalléen 21, NO-0349 Oslo, Norway.
authors.forename: Hege
authors.initials: H
authors.lastname: Gundersen
authors.affiliation: Norwegian Institute for Water Research (NIVA), Gaustadalléen 21, NO-0349 Oslo, Norway.
authors.forename: Hartvig
authors.initials: H
authors.lastname: Christie
authors.affiliation: Norwegian Institute for Water Research (NIVA), Gaustadalléen 21, NO-0349 Oslo, Norway.
authors.forename: Camilla With
authors.initials: CW
authors.lastname: Fagerli
authors.affiliation: Department of Biosciences, University of Oslo, PO Box 1066 Blindern, NO-0316 Oslo, Norway.
authors.forename: Stein
authors.initials: S
authors.lastname: Fredriksen
authors.affiliation: Norwegian Institute for Water Research (NIVA), Gaustadalléen 21, NO-0349 Oslo, Norway.
authors.forename: Janne Kim
authors.initials: JK
authors.lastname: Gitmark
authors.affiliation: Norwegian Institute for Water Research (NIVA), Gaustadalléen 21, NO-0349 Oslo, Norway.|Department of Biological and Environmental Sciences, University of Gothenburg, SE-41319 Gothenburg, Sweden.
authors.forename: Karl
authors.initials: K
authors.lastname: Norling
authors.affiliation: Norwegian Institute for Water Research (NIVA), Gaustadalléen 21, NO-0349 Oslo, Norway.
authors.forename: Mats Gunnar
authors.initials: MG
authors.lastname: Walday
authors.affiliation: Norwegian Institute for Water Research (NIVA), Gaustadalléen 21, NO-0349 Oslo, Norway.|Department of Biosciences, University of Oslo, PO Box 1066 Blindern, NO-0316 Oslo, Norway.
authors.forename: Kjell Magnus
authors.initials: KM
authors.lastname: Norderhaug
mesh_terms: D033304:Amphipoda / Q000502:physiology*; D063147:Animal Distribution; D000818:Animals; D005247:Feeding Behavior; D044423:Kelp; D009664:Norway; D033542:Pandalidae / Q000502:physiology*; D059008:Time-Lapse Imaging