Effects of the invasive clam Corbicula fluminea (Müller, 1774) on an estuarine microbial community

摘要: The Asian clam Corbicula fluminea (Muller, 1774) is well recognized for its invasive behavior and high ecological economic impacts, being classified as one of the 100 worst alien species (IAS) in Europe. In this study, we performed a manipulative experiment under natural conditions to assess effects C. on sediments biochemistry structure an estuarine microbial (fungi bacteria) community. We placed 5 treatments (control, rock, closed, live open) 2months Minho estuary (NW Iberian Peninsula). No differences were detected between regarding values carbon (C), nitrite (NO2(-)), ammonium (NH4(+)), phosphate (PO4(3-)) calcium (Ca) sediments; however, potassium (K) had higher open treatment. Furthermore, found that presence stimulated fungal biomass (but not diversity) bacterial diversity. Bioturbation activities by are possibly main mechanism explaining these results; other factors such macroinvertebrate and/or production feces pseudofeces cannot be excluded. To our knowledge, first clearly shows Given widespread distribution IAS paucity quantitative assessments bivalves' communities, it will important future studies further investigate processes.