Hi Chris -
We have d34S values over +22 in jellyfish mesoglea from a broad spatial band across the North Sea i.e. not a few random values. Samples all run by Rona in East Kilbride. Katie St John Glew’s paper with CNS isoscapes for UK shelf seas is just in press with
Methods Ecol Evol, so should be available pretty soon. We don’t have fish from the same sites in the North Sea with the very high d34S values, but cod muscle so far analysed from sites around the N Atlantic gets up to +20, and looks to be between 2-4 per
mille lower than jellyfish mesoglea from similar locations.
Marine Isotope Ecology
University of Southampton
we found values up to +21 for d34S (quite upper limit) in a variety of antarctic sealife, such as Sea Ice Algae, Pycnogonida, Nudibranchia, Holothuria, Gastropods, Asteroidae.
Not in fish (<18 permil), bivalves or phytoplancton though.
Run on pyrocube with Isoprime100 in CNS mode.
We've been running CNS on our new Pyro Cube/visION machine and have been really impressed with the results.
The last batch of marine fish livers however include values >21 ‰, which (possibly reflecting my ignorance of all things d34S) I thought was the upper limit for marine-derived S.
Although I think it is likely teething problems with us and the machine, I wondered if anyone in IsoGeochem land has seen d34S values in fish etc higher than 21 ‰? We are in a rather odd location (Humboldt Current), with lots of upwelling/productivity so strange
things do happen here biologically that often have big isotopic impacts and turn established norms on their head.
><> ><> ><> ><> ><> ><> ><> ><> ><> ><> ><> ><> ><> ><> ><> ><> ><>
Professor Chris Harrod
(Fish & Aquatic Ecology)
Email: [log in to unmask]
HarrodLab: Fish and Stable Isotope Ecology Laboratory
Instituto de Ciencias Naturales Alexander von Humboldt,
Universidad de Antofagasta,
Avenida Angamos 601, Antofagasta, Chile
Chile Mobile: +56 9 7399 7792
Chile Office: +56 55 2637400
<>< <>< <>< <>< <>< <>< <>< <>< <>< <>< <>< <>< <>< <>< <>< <>< <><
Please consider the environment before printing this e-mail
University of Tasmania │CSL - Isotope Ratio Mass Spectrometry
Dr. Christian Dietz, Facility Manager │Private
Bag 74, Hobart, 7005 Tasmania
(+61) 3 6226 7820, cell phone: (+61) 4 9780 8570 │URL: Central
This message is intended exclusively for its adressee and may contain information that is CONFIDENTIAL and protected by professional privilege.
If you are not the intended recipient you are hereby notified that any dissemination, copy or disclosure of this communication is strictly prohibited by law. If this message has been received in error, please immediately notify us via e-mail and delete.
This message has been scanned for viruses and
dangerous content by
, and is
believed to be clean.