Figure 2.

Composition of fatty acids (% of total fatty acids) in two mesozooplankton size fractions (100–300 µm and 300 µm) from three water bodies separated by the vertical water column stratification at the Eastern Gotland Basin in July 2014 (a) and 2015 (b). Notes: The bottom water was collected only in 2014. Abbreviations: DHA, docosahexaenoic acid; EPA, eicosapentaenoic acid; MUFAs, monounsaturated fatty acids; PUFAs, polyunsaturated fatty acids; SFAs, saturated fatty acids. Dietary trophic markers: Det^a—detritus (Kattner & Krause, 1989; Peters et al., 2006); Cya^b—cyanobacteria (Peters et al., 2013; Vargas et al., 1998); DHA/Din^c—dinoflagellates (Dalsgaard et al., 2003; Graeve et al., 1994), EPA^*—typical for diatoms (Graeve et al., 1994; Volkman et al., 1989), but together in high quantities with DHA signals the presence of dinoflagellates (Ahlgren et al., 1992; Mansour et al., 1999)