Abstract:Carbon and nitrogen stable isotope ratios are increasingly used to study long-term change in food web structure and nutrient cycling. Whether isotope composition in primary producers and consumers (so-called isotope baselines) reflect environmental changes in a similar manner is largely unknown. We take advantage of long-term oceanographic monitoring data and archived biological samples for the well-studied Baltic Sea to retrospectively analyse elemental composition (C, N and P) and stable isotopes (δ13C, δ15N… Show more
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