Valentina Costa

5 Questions 11 Answers 0 Followers

Questions related from Valentina Costa

Piecewise multiplicative scatter correction in R?

Anyone is aware of an R package available online to perform a Piecewise Multiplicative Scatter Correction (PMSC)? This technique is an advance of the Multiplicative Scatter Correction (MSC)...

24 August 2020 3,070 2 View

Does SIAR/MixSiar need a correction in the consumer's stable isotope data relative to the trophic level?

I want to describe a complex trophic web with primary and secondary consumers and different sources using carbon and nitrogen stables isotopes. Do I need to subtract the trophic fractionation for...

29 January 2015 6,195 1 View

I want to check differences in environmental variables, such as temperature and pH, over time between three different sites.

What kind of statistical approach is the best? I think that ANCOVA with 'sites' as a categorical and 'time' as a continuous variable could be correct, right?

18 February 2013 4,866 7 View

How can I sterilize the surface (bacteria-free) of marine seagrass without degradation of tissue?

I'm interestered in bacteria colonization but I want to start with bacteria-free tissue.

31 January 2013 2,965 13 View

Are there any information about carbon and nitrogen trophic enrichements in sea cucumbers?

Stable isotopes analysis are useful to trace organic matter sources if trophic enrichments/fractionations are known.

17 October 2012 9,705 1 View