4. DISCUSSION
With accelerating global and regional environmental changes, identifying
the properties and changes of food webs, including trophic niche
partitioning among marine consumers, it is important to understand the
resulting changes in biological systems. Here, we provide a systematic
assessment of the potential of CSIA compared to traditional bulk C and N
isotope analysis to elucidate resource partitioning and trophic niche
differentiation of consumers in the Baltic Sea, a rapidly changing sea
with a strong spatial environmental gradient.