Marine Biodiversity and Ecosystem Functioning
EU Network of Excellence

 
Main Menu

· Home
· Contacts
· Data System
· Documents
· Events Calendar
· FAQ
· Forums
· Job M@RKET
· Links
· MarBEF Open Archive
· Network Description
· Outreach
· Photo Gallery
· Quality Assurance
· Register of Resources
· Research Projects
· Rules and Guidelines
· Training
· Weekly News Bulletin
· Wiki
· Worldconference
 

 

Last 3 Job opportunities View latest job opportunities RSS feed


>> Go to Job M@RKET

Last 2 forum posts View MarBEF Forum RSS feed

 Field course on sharks in South Africa (June 2011)
 training opportunity in basic taxonomy

>> Go to forums

 

 
Who's Online

Currently 16 guest(s) online
Currently 0 member(s) online
 

 
Login

Username

Password

 

MarBEF Open Archive (MOA)

MarBEF OA logo
Introduction | Search

report an error in this recordbasket (0): add | show Printer-friendly version

Impacts of bottom and suspended cultures of mussels Mytilus spp. on the surrounding sedimentary environment and macrobenthic biodiversity
Ysebaert, T.J.; Hart, M.; Herman, P.M.J. (2009). Impacts of bottom and suspended cultures of mussels Mytilus spp. on the surrounding sedimentary environment and macrobenthic biodiversity. Helgol. Mar. Res. 63(1): 59-74. dx.doi.org/10.1007/s10152-008-0136-5
In: Helgoland Marine Research. Springer: Berlin. ISSN 1438-387X
Peer reviewed article

Available in Authors 
    Vlaams Instituut voor de Zee: Open Repository 144428 [ download pdf ]

Keywords
    Biodiversity; Ecosystem management; Habitat; Macrobenthos; Mussels; Sediments; Suspended; Mytilus Linnaeus, 1758 [WoRMS]; Marine

Authors  Top 
  • Ysebaert, T.J.
  • Hart, M.
  • Herman, P.M.J.

Abstract
    The aim of this study was to quantify the effect of bottom and suspended mussel cultures, cultured in different physical environments, on the sedimentary environmental conditions and thereby the biodiversity structure of the associated macrofaunal community. We compared two bottom cultures (Limfjorden: microtidal, wind-driven; Oosterschelde: macrotidal) and one suspended culture (Ria de Vigo in an upwelling coastal region). The sedimentary environmental conditions (mud fraction, POC, PON, phosphorus content, chl a breakdown products) were significantly elevated underneath and surrounding bottom and suspended cultures compared to culture-free sediments that were nearby and hydrodynamically similar. The relative change in environmental conditions was more pronounced in the Oosterschelde compared to Limfjorden, most likely due to differences in hydrodynamic forcing and characteristics of the mussel bed. The effect of the suspended cultures in Ria de Vigo on the surrounding sediments was influenced by local topographic and hydrodynamic conditions. The impact of mussels on the benthic community due to biodeposition was clearly seen in the community structure. The species composition changed from species which are typically present in sandy environments to more small opportunistic species, which are typically present in organically enriched sediments. The impact of bottom cultures on the benthic community due to changes in the habitat under the presence of mussels was positive, especially in the Oosterschelde where an increase in the number of epibenthic species was seen. The influence of bottom cultures on the sedimentary environment and on the macrobenthic community seems to be very local. Within the mussel site in Limfjorden, differences were detected between sites where none or almost no mussels were present with sites where mussels were very abundant.

 Top | Authors