. . . . . "In aquatic ecosystems, δ15N values generally increase with trophic level" . . . . . . . "trophic level" . "nitrogen-15" . "aquatic ecosystem" . "Cristina Di Muri" . "2026-02-01T14:22:04.521Z"^^ . . . . . . . . . . "RSA" . "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAyuQ7Hi/zQ7hDZtMtLWK1JKU83Kgo8NqC+b8sxD5IoiekPctXVA8iM0zD/9pcp1txGXjX/fUj5HRUkOn4RVHP3fFa/3irQYpZFQ5fHRj8MQ7kJ6AEd1oggfajDevZGz63hj6Vigo+BNYBXqhcbWVAfLfbzQPAegce9zH6n9vTqKYMrwrSxPQdhoAcoaKOqY8gRiJgzekeEr+iEqa63X1HwWtYDs7X25a9xWbgaDSsRjzZGVUVOn1vYdSfWAaIw+EB9CiJfKm1zuXcur5PDziMW1pnZG6/NQtrA7AM3gLnoSoU3glkm5UhksGNqu2SV+j8oZLg7v6C5/sg2f6LIJMeFwIDAQAB" . "XGREk4dk6Fku1lls6LLjIfN+VMMJRLR2H2CDCVDDiXRTSc08SPJyU3lT5acioUvr/pezz5mJeeFcXGg/c4HW2nTEOkTniwsLKN9fhcidVUjRFHHfFHEQ7oFnA7sWKC39d2iRZ2UmeKmv4ct63hIKbXfsfJ6IFGjSnOHryttxxj5CrJVO7gV/yTdrZoSqaQhb2gHnzOQbVoX5n3w0TnjqWcldQbFKTGxu/tI3s7gr04vC1spxhqianzmt5YZ0DIKLMRVOx967FiQG2Scn7m07RU01X7qd3r+m1eLOHCCwaDSDHNd0XsmtrRrbIpR7TStyL/e6v8IWLl690BPkh7dxBA==" . . .