Dear Todd,
Here are a few d34S "marine" fish+other org. papers from the last 10 years
or so you might be interested in...

Sincerely,
Steve MacAvoy

Hesslein, R.H., M.J. Capel, D.E. Fox, K.A. Hallard.  1991.  Stable isotopes
of sulfur, carbon, and nitrogen as indicators of trophic level and fish
migration in the lower Mackenzie River, Canada.  Can. J. Fish. Aquat. Sci.
48:2258-2265.

Hesslein, R.H., K.A. Hallard, P. Ramlal.  1993.  Replacement of sulfur,
carbon, and nitrogen in tissue of growing broad whitefish (Coregonus nasus)
in response to a change in diet traced by d34S, d13C, and d15N.  Canadian
Journal of Fisheries and Aquatic Sciences 50:2071-2076.

Kennicutt, M.C., II, R.A. Burke, I.R. MacDonald, J.M. Brooks, G.J. Denoux,
S.A. Macko.  1992.  Stable isotope partitioning in seep and vent organisms:
chemical and ecological significance.  Chemical Geology 101:293-310.

Kwak T.J. and J.B. Zedler.  1997.  Food web analysis of southern California
coastal wetlands using multiple stable isotopes.  Oecologia 110:262-277.

MacAvoy, S.E., S.A. Macko, G.C. Garman.  1998.  Tracing marine biomass into
tidal freshwater ecosystems using stable sulfur isotopes.
Naturwissenschaften 85(11):544-546.

MacAvoy, S.E., S.A. Macko, S.P. McIninch, G.C. Garman.  2000.  Marine
nutrient contributions to freshwater apex predators.  Oecologia 122:568-573.

MacAvoy, S.E., R.S. Carney, C.R. Fisher, S.A. Macko.  2002.  Use of
chemosynthetic biomass by large, mobile, benthic predators in the Gulf of
Mexico.  Marine Ecology Progress Series 225:65-78.



From: "Todd Miller" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Monday, February 24, 2003 9:40 AM
Subject: 34S of marine organisms


>Greetings,
>
>I have several questions regarding use of sulfur stable isotopes,
>particularly in the marine environment.  Understandably, 34S has been used
>on microbial systems (marshes, estuarine and hydrothermal vent
>communities), with the general trend being marine sulfur to be more
>enriched than freshwater/estuarine.  My question is, why has sulfur not
>been applied to marine zooplankton and fish?  To my knowledge, very little
>work has been done on this.  My guess is that once in the marine
>environment, sulfur values vary and are not linked to any particular
>(known) mechanism/process.  Another question is, how much material do I
>need for sulfur analysis of marine zooplankton and fish.
>
>If anyone out there has ideas or thoughts on this (or references!), it
>would be greatly appreciated!
>
>Sincerely,
>Todd

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