NDLI: Effects of the tube-building polychaeteLanice conchilega (Pallas) on benthic macrofauna and nematodes in an intertidal sandflat

Content Provider	Springer Nature Link
Author	Zühlke, Ruth Blome, Dietrich Bernem, Karl Heinz Dittmann, Sabine
Copyright Year	1998
Abstract	Biogenic habitat structures play a major role for distribution patterns of benthic fauna. Tube-dwelling polychaetes provide one of the main features in the otherwise relatively low structured sandy intertidal. The aim of this study was to investigate the effect of the tube-dwelling sand-masonLanice conchilega on macro-fauna and nematodes in an intertidal sandflat in the Wadden Sea area off die German coast. Field studies and experiments were carried out on the associated macrobenthic fauna of naturalL. conchilega aggregates and of artificial tubes. Furthermore, the distribution of nematode species at increasing distances along transects arising from individualL. conchilega tubes, was investigated.Natural as well as artificial tubes had positive effects on numbers of macrofaunal species and individuals. Yet, juvenileMya arenaria were the only species appearing in higher numbers in bothL. conchilega aggregates and artificial tube fields. They used the tube structure to attach themselves with their byssus threads. The polychaeteMalmgreniella lunulata only occurred in naturalL. conchilega aggregates and was often found inside the polychaetes’ tubes. It is possibly a commensal associated toL. conchilega. In artificial tube fields, opportunistic spionids andCapitella capitata settled in higher numbers. This might be due to colonisation of sediment accumulating in the tube fields, utilisation of the tubes as an attachment surface or refuge from predation. However, two predatory polychaetes,Eteone longa andNereis diversicolor, were also found in higher abundance in natural or artificial tube fields.Nematode abundances were considerably higher next to individualL. conchilega tubes at a distance of 0.5 cm. This distribution was mainly caused by a group of threadlike species with a thin cuticle, which are thought to be adapted to epidermal uptake of dissolved organic matter.It is suggested that there might be a linkage between predatory polychaetes and the distribution pattern found for nematodes around the tubes ofL. conchilega.
Starting Page	131
Ending Page	138
Page Count	8
File Format	PDF
ISSN	0080889X
Journal	Marine Biodiversity
Volume Number	29
Issue Number	1-6
Language	English
Publisher	Springer-Verlag
Publisher Date	1998-01-01
Publisher Place	Berlin, Heidelberg
Access Restriction	Subscribed
Subject Keyword	Lanice conchilega tube-dwelling biogenic habitat structures arificial tube fields benthic macrofauna Nematodes Biodiversity Freshwater & Marine Ecology Plant Systematics/Taxonomy/Biogeography Animal Systematics/Taxonomy/Biogeography
Content Type	Text
Resource Type	Article
Subject	Aquatic Science Oceanography

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