Combining δ13C and δ15N from bone and dentine in marine mammal palaeoecological research: insights from toothed whales
Research output: Contribution to journal › Journal article › Research › peer-review
Standard
Combining δ13C and δ15N from bone and dentine in marine mammal palaeoecological research : insights from toothed whales. / Rey-Iglesia, Alba; Wilson, Tess; Routledge, Jennifer; Skovrind, Mikkel; Garde, Eva; Heide-Jorgensen, Mads Peter; Szpak, Paul; Lorenzen, Eline D. D.
In: Isotopes in Environmental and Health Studies, Vol. 59, No. 1, 2023, p. 66-77.Research output: Contribution to journal › Journal article › Research › peer-review
Harvard
APA
Vancouver
Author
Bibtex
}
RIS
TY - JOUR
T1 - Combining δ13C and δ15N from bone and dentine in marine mammal palaeoecological research
T2 - insights from toothed whales
AU - Rey-Iglesia, Alba
AU - Wilson, Tess
AU - Routledge, Jennifer
AU - Skovrind, Mikkel
AU - Garde, Eva
AU - Heide-Jorgensen, Mads Peter
AU - Szpak, Paul
AU - Lorenzen, Eline D. D.
PY - 2023
Y1 - 2023
N2 - Stable carbon (delta C-13) and nitrogen (delta N-15) isotopic compositions of bone and dentine collagen extracted from museum specimens have been widely used to study the paleoecology of past populations. Due to possible systematic differences in stable isotope values between bone and dentine, dentine values need to be transformed into bone-collagen equivalent using a correction factor to allow comparisons between the two collagen sources. Here, we provide correction factors to transform dentine delta C-13 and delta N-15 values into bone-collagen equivalent for two toothed whales: narwhal and beluga. We sampled bone and dentine from the skulls of 11 narwhals and 26 belugas. In narwhals, dentine was sampled from tusk and embedded tooth; in belugas, dentine was sampled from tooth. delta C-13 and delta N-15 were measured, and intra-individual bone and dentine isotopic compositions were used to calculate correction factors for each species. We detected differences in delta C-13 and delta N-15. In both narwhals and belugas, we found lower average delta C-13 and delta N-15 in bone compared with dentine. The correction factors provided by the study enable the combined analysis of stable isotope data from bone and dentine in these species.
AB - Stable carbon (delta C-13) and nitrogen (delta N-15) isotopic compositions of bone and dentine collagen extracted from museum specimens have been widely used to study the paleoecology of past populations. Due to possible systematic differences in stable isotope values between bone and dentine, dentine values need to be transformed into bone-collagen equivalent using a correction factor to allow comparisons between the two collagen sources. Here, we provide correction factors to transform dentine delta C-13 and delta N-15 values into bone-collagen equivalent for two toothed whales: narwhal and beluga. We sampled bone and dentine from the skulls of 11 narwhals and 26 belugas. In narwhals, dentine was sampled from tusk and embedded tooth; in belugas, dentine was sampled from tooth. delta C-13 and delta N-15 were measured, and intra-individual bone and dentine isotopic compositions were used to calculate correction factors for each species. We detected differences in delta C-13 and delta N-15. In both narwhals and belugas, we found lower average delta C-13 and delta N-15 in bone compared with dentine. The correction factors provided by the study enable the combined analysis of stable isotope data from bone and dentine in these species.
KW - Beluga whale
KW - bone-collagen
KW - carbon-13
KW - isotope ecology
KW - marine mammals
KW - narwhal
KW - nitrogen-15
KW - paleoecology
KW - tooth-dentine
KW - CARBON-ISOTOPE FRACTIONATION
KW - STABLE CARBON
KW - HOLOCENE CHANGES
KW - TROPHIC ECOLOGY
KW - NITROGEN
KW - COLLAGEN
KW - RATIOS
KW - PALAEODIETARY
KW - SEALS
KW - N-15
U2 - 10.1080/10256016.2022.2145285
DO - 10.1080/10256016.2022.2145285
M3 - Journal article
C2 - 36445837
VL - 59
SP - 66
EP - 77
JO - Isotopes in Environmental and Health Studies
JF - Isotopes in Environmental and Health Studies
SN - 1025-6016
IS - 1
ER -
ID: 329558237