Stable isotopes as measure of niche breadth of nesting green turtles (Chelonia mydas) on Rocas Atoll, Brazil

نویسندگان

چکیده

The study analysed the niche breadth of nesting green turtles, Chelonia mydas, on Rocas Atoll, Brazil, through stable isotopes (δ15N and δ13C), comparing samplings egg yolk carapace collected from two groups (2017 2019). mean δ15N values in were 7.1‰ (2017) 6.8‰ (2019), 7.8‰ 7.3‰ respectively. For δ13C, -17.4‰ -17.5‰ (2019) yolk, -18.4‰ -17.9‰ carapace. results suggest herbivory coastal-benthic environments as main feeding pattern this population. was similar between 2017 2019 both tissues. In general, trophic diversity (NR, CR, CD SEA) comparable years well redundancy (MNND SDNND), which overall high. metrics pointed to a homogeneous This adds piece solve puzzle adult turtle ecology.

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ژورنال

عنوان ژورنال: Revista Ibero-Americana de Ciências Ambientais

سال: 2021

ISSN: ['2179-6858']

DOI: https://doi.org/10.6008/cbpc2179-6858.2021.003.0008