Stable Isotope Evidence for Dietary Overlap between Alien and Native Gastropods in Coastal Lakes of Northern KwaZulu-Natal, South Africa
Figure 6
Gastropods, food sources and diets in Lake Nhlange, 2008.
(A) Four-point 3 m transect showing gastropod densities and microphytobenthic (MPB) biomass (as chl-a concentration). (B) Carbon and nitrogen stable isotope signatures of gastropods (number in brackets: trophic position) and their potential food sources, such as detritus (DTR) and sedimentary organic matter (SOM). SIAR boxplots show the proportional contribution (%) of different sources to the diet of (C) Tarebia granifera and (D) Melanoides tuberculata. Samples were collected at Lake Nhlange in Kosi Bay, in November 2008. At the time, the site was dominated by freshwater conditions.
doi: https://doi.org/10.1371/journal.pone.0031897.g006