Explosive demographic expansion by dreissenid bivalves as a possible result of astronomical forcing

摘要: Human induced range expansions of invasive dreissenid bivalves are great concern. However, the underlying biological processes only poorly understood, partly due to lack information on natural expansion events. Here we use extinct bivalve species Sinucongeria primiformis as a model organism for testing (i.e. pre-Anthropocene) blooms in lacustrine system Lake Pannon during Tortonian (~ 10.5 Myr; late Miocene). A total 600 samples from consecutive core were evaluated relative abundance this pavement-forming mollusc, which cover about eight millennia Miocene time with decadal resolution. Our data indicate that settlement by offshore environment was limited mainly bottom water oxygenation, follows predictable and repetitive patterns through time. These population fluctuations might be related solar cycles: successful is recurring frequency known lower upper Gleissberg cycles 50–80 90–120 yr periods. appear control regional wind patterns, directly linked mixing lake. This modulated even more prominent 500 cycle, seems most important pacemaker hydrology.