期刊
MARINE ECOLOGY PROGRESS SERIES
卷 522, 期 -, 页码 157-167出版社
INTER-RESEARCH
DOI: 10.3354/meps11168
关键词
Corbicula fluminea; Alien species; Ecosystem engineering; Invertebrates; Minho estuary
资金
- Portuguese Foundation for Science and Technology (FCT) through POPH/FSE funds [SFRH/BD/86463/2012, SFRH/BPD/90088/2012]
- FCT fund
- COMPETE fund [PTDC/AAC-AMB/116685/2010]
- European Regional Development Fund (ERDF) through COMPETE funds [PEst-C/MAR/LA0015/2011]
- FCT/MEC through Portuguese funds (PIDDAC) [PEst-OE/BIA/UI4050/2014]
- Fundação para a Ciência e a Tecnologia [SFRH/BD/86463/2012] Funding Source: FCT
The Asian clam Corbicula fluminea (Muller, 1774) has been recognized as one of the most important invasive alien species in aquatic ecosystems and may have significant ecological and economic impacts. Recently, the presence of C. fluminea was associated with changes in benthic and epibenthic fauna. In this study, we aimed to understand the mechanisms underlying the effects of C. fluminea on an estuarine macrozoobenthic assemblage using a manipulative experiment. We used 5 different treatments (control, rock, closed, live, open), which were placed in a low sandy intertidal soft bottom area in the Minho estuary (NW Iberian Peninsula) for 2 months. We found that the presence of live and open empty shells of C. fluminea had positive effects on the density, biomass and species richness of macrozoobenthos, specifically on species belonging to Annelida, Mollusca and Crustacea. Our results may be explained by 2 main mechanisms: (1) the production of feces and pseudofeces by C. fluminea, which increases organic matter content and food resources for some macrozoobenthic species; and (2) ecosystem engineering activities by C. fluminea, which can create conditions for the establishment of other species via shell production and bioturbation in the sediments.
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