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1 Introduction Understanding dietary patterns is fundamental to ecology, as they shape our knowledge of predator–prey interactions, community structure, and evolutionary adaptations. While some species exhibit high degrees of specialisation, others maintain generalist diets, which can influence their resilience to environmental change (Terraube et al. 2011).
1 Introduction Since Daufresne et al. (2009) suggested that declining body sizes could be a third universal response to global warming, the effect of climate change on animal body sizes is an often-discussed topic. Reviews by Gardner et al. (2011) and by Sheridan and Bickford (2011) showed that body sizes are not always changing and that there were size reductions—but also increases.
Discussion Discrimination factors of δ13C and δ15N differed between tissues of red knots and also the type of diet affected the discrimination factors (Fig. 1, 2, Table 2). Most experiments that report discrimination factors show differences between tissues (reviewed by Caut et al. 2009). However, differences between feather types as we found here, have not been observed often. Michalik et al.
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