期刊
MARINE ENVIRONMENTAL RESEARCH
卷 90, 期 -, 页码 85-95出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.marenvres.2013.05.015
关键词
Ecosystem engineer; Mussel species; Invasion; Limnoperna securis; Mytilus galloprovincialis; Clumps complexity; Biodiversity; Community composition; Benthic ecology
资金
- Spanish Government through the Ministry of Science and Innovation [CGL2009-07205]
- University of Vigo
- Fundacao para a Ciencia e Tecnologia (FCT, Portugal) [SFRH/BDP/81567/2011, SFRH/BPD181582/2011]
Ecosystem engineers such as mussels may affect strongly both the structure of benthic assemblages and the ecosystem functioning. The black-pygmy mussel Limnoperna securis is an invasive species that is spreading along the Galician coast (NW Spain). Its current distribution overlaps with the distribution of the commercial native mussel species Mytilus galloproyincialis, but only in the inner part of two southern Galician rias. Here, we analysed the assemblages associated with clumps of the two mussel species and evaluated if the invasive species increased complexity of habitat. To measure complexity of clumps we used a new method modified from the chain and tape method. Results showed that the identity of the mussel influenced macrofaunal assemblages, but not meiofauna. L. securis increased the complexity of clumps, and such complexity explained a high percentage of variability of macrofauna. The shift in dominance from M. galloprovincialis to L securis may alter habitat structure and complexity, affecting the macrofaunal assemblages with unpredictable consequences on trophic web relations. (C) 2013 Elsevier Ltd. All rights reserved.
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