I suggest an article that may be relevant to your topic

Lee, Ka‐Man,Lee, Shing Yip, & onnolly, Rod M (2011) Combining stable isotope enrichment, compartmental modelling and ecological network analysis for quantitative measurement of food web dynamics, Methods in Ecology and Evolution: 56-65. doi: 10.1111/j.2041-210X.2010.00045.x.

 Dear Dr Xiaoguang Ouyang,

Thank you very much for the article suggestion

With my best regards

Mario

Dear Dr Barletta,

Thank you for your reply.

There are also some papers about ENA as bellow.

Fath and Patten 1999. Review of the Foundations of network environ analysis. Ecosystems

Ulanowicz, R.E. 2004. Quantitative methods for ecological network analysis. Computational Biology and Chemistry, 28:321-339.

Fath et al. 2007.  Ecological Network Analysis: Network Construction.  Ecol. Model.

All the best

Xiaoguang

Dear Xiaoguang,

Thank you for your attention. I will study all these references that you suggested me. As soon as possible I will get in contact about this matter with you again.

With my best regards

Mario

Dear Christian,

Thank you very much for your answer and for the articles. I will study them and as soon as possible I will get in contact again in case I have any doubts.

With my best regards

Sincerely

Mario