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HALL OF RECORDS

The most common methodology employed by members of the lab is the analysis of stable carbon and nitrogen isotopic compositions by EA-IRMS. Below are the records for the lowest and highest delta values recorded by year. Samples must be from an identifiable taxon.

2017

Highest δ15N

Lowest δ15N

Highest δ13C

Lowest δ13C

Polar-bear-clip-art-pictures-of-polar-be
lemming.png
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2017

46 - Polar bear

δ15N = +25.25 ‰

8 - Lemming

δ15N = +0.32 ‰

12069 - Swordfish

δ13C = −9.60 ‰

459 - Llama/alpaca

δ13C = −22.23 ‰

2017

Polar-bear-clip-art-pictures-of-polar-be
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2018

788 - Polar bear

δ15N = +25.01 ‰

546 - Algarrobo

δ15N = +1.76 ‰

559 - Maize

δ13C = −9.31 ‰

560 - Guava

δ13C = −27.44 ‰

2017

Polar-bear-clip-art-pictures-of-polar-be
yellow_perch_transparent.jpg

2019

5141 - Polar bear

δ15N = +23.20 ‰

2486 - White-lipped snail

δ15N = −1.73 ‰

7334 - Sheepshead

δ13C = −5.67 ‰

5420 - Yellow perch

δ13C = −29.45 ‰

Polar-bear-clip-art-pictures-of-polar-be
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cow illustration.png
yellow_perch_transparent.jpg

2020

10485 - Polar bear

δ15N = +22.18 ‰

5688 - Caribou

δ15N = +2.54 ‰

9372 - Cattle

δ13C = −6.20 ‰

9057 - Yellow perch

δ13C = −28.56 ‰

PEOPLE'S CHOICE AWARD

Voted on by lab members as the coolest sample analyzed in a calendar year.

2017

2018

2019

2020

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527 - Vizcacha fleece

A fleece sample made from the hair of the vizcacha. This sample comes from a site in the Pampa del Tamarugal in the Atacama Desert of northern Chile that was occupied by hunter-gatherers ~11,500 years ago.

You can read more about this sample in this paper.

Narluga_reconstruction2_credit_Markus_Bü

604 - Narluga

A sample of bone from the world's only confirmed beluga-narwhal hybrid (the 'narluga') from Disko Bay (West Greenland). This specimen is housed at the  Zoological Museum in Copenhagen.

You can read more about this sample in this paper.

5295 - Double-tusked narwhal

A sample of bone from a rare narwhal with two very large tusks. This specimen is housed at the  Zoological Museum in Copenhagen.

9811 - Iron Age Dog

A naturally mummified dog from the Lower Ob River region in Siberia produced bone, hair, and nails for isotopic analysis. The dog fed on freshwater fish supplied by people throughout the year. You can read more about this sample in this paper.