Carbon and nitrogen stable isotope signatures in red blood cells of dunlins sampled at the Tagus estuary during autumn migration.

• Main Authors: Teresa Catry (157961), José Pedro Granadeiro (7359062), Jorge Sánchez Gutiérrez (11999299), Edna Correia (6368099)
• Format: Still Image
• Language: unknown
• Published: 2022
• Subjects: Evolutionary Biology; Ecology; Science Policy; Environmental Sciences not elsewhere classified; Biological Sciences not elsewhere classified; study adds substantially; similar refuelling rates; replenish energy stores; physiological status suggests; performing fewer stops; moderate rates along; larger fuel loads; large estuarine wetland; experience stronger pressures; east atlantic flyway; compare refuelling rates; calidris alpina </; skipping migratory strategy; single migratory strategy; quality stopover site; physiological state within; key stopover site; birds fly short; particularly concerning decisions; individuals stop primarily; high fuel loads; div >< p; early birds showed; fuelling stopping functions; early autumn migrants; within species; stopover use; stopover ecology; migratory shorebirds; migratory periods; understanding non; tagus estuary; stationary periods; prolonged fuelling; previous knowledge; plasma triglycerides; late migrants; intermediate fuelling; hydroxybutyrate concentrations; highest triglycerides; higher haemoglobin; hematocrit levels; haemoglobin levels; haematological profiles; haematological parameters; carrying capacity; blood oxygen; autumn migrations; >; using; Calidris alpina; Iceland
• Online Access: https://doi.org/10.1371/journal.pone.0263031.g004

Early, mid and late correspond to three capture events (mid-July, early August and mid-August). Square symbols represent the expected signatures of dunlins (mean ± SD) at Iceland (obtained from chick feathers, n = 8) and Tagus estuary (obtained from overwintering birds during spring, n = 7).