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Eutrophication and Dreissena Invasion as Drivers of Biodiversity: A Century of Change in the Mollusc Community of Oneida Lake

Figure 4

NMDS ordination plots of the molluscan community in Lower South Bay.

Structure of the total molluscan community (A), gastropod (B) and bivalve (C) assemblages based on Bray-Curtis similarities of species presence-absence in samples collected in the Lower South Bay of Oneida Lake collected in 1917 [22], [23], 1967 [24], and 2012. The circled points in (A) and (B) represent 33 samples from 1967 in which only B. tentaculata was found.

Figure 4