Pierre Cresson

7 Questions 14 Answers 0 Followers

Questions related from Pierre Cresson

C and N isotopic ratios for rivers flowing in the North Sea?

I'm currently working on OM sources fueling fish communities in the North Sea. I have a dataset of C and N isotopic ratios for fish and I would like to include benthic, pelagic and riverine OM...

04 April 2019 2,086 3 View

What protocol do you use to freeze-dry fish tissues?

We've just acquired a new freeze-dryer that allow us to perform freeze-drying with two steps and with accuracy on the level of vacuum and temperature to be used. I have been used to use old...

11 November 2017 3,708 1 View

Mercury integration time in fish muscle?

I'm wondering if someone is aware of studies investigating the integration time of mercury in fish tissues, mostly muscle. In other words, when a Hg concentration is measured in muscle, is it the...

08 August 2016 3,940 4 View

Anyone familiar with conversion factor for contaminant concentrations relatively to dry or fresh weight?

I'm wondering if some of you are aware of existing conversion factors for levels of metallic contamination in fish muscle tissues. In the present work, I'm focusing on metallic contamination, so...

09 September 2015 2,177 6 View

Does anyone know of a lab performing compound-specific stable isotope analysis?

I'm currently planning some future projects, and I'm looking for a lab running amino-acids stable isotope analyses. Could someone provide me with the contact of such a lab, with the cost of one...

03 March 2015 3,213 4 View

Can anyone help with the contamination thresholds for marine mammals?

I'm currently working on contamination levels of a large range of molecules (PCB, PBDE, HAP, pesticides etc.) in marine mammals. I'm looking for threshold values which could allow me to say if...

04 April 2014 2,166 12 View

Is there an accepted definition for "deep sea" ?

I'm currently working on a project with some species sampled between 250 and 800 m in the Mediterranean Sea (eg Galeus melastomus, Lophius piscatorius etc.). I'm asking myself a question : do you...

02 February 2014 6,180 16 View