Hi Peter

this document from EPA Ireland may help you identify the most appropriate index or method for your data

http://www.epa.ie/pubs/reports/water/waterqua/Final_Status_Report_20110621.pdf

Thank you!

Dear Kobor

The following site might useful to you

http://cedb.asce.org/cgi/WWWdisplay.cgi?278531

Dear Peter,

Here some paper on Mogilnoe lake - one of most interesting artificial lakes of North-West  of Russia.

Best wishes,

Tatiana

http://link.springer.com/article/10.1023/A:1012368424223

http://link.springer.com/article/10.1023/A:1018880814084

http://link.springer.com/article/10.1007/s11021-005-0107-7

http://link.springer.com/article/10.1134/S0001437010030100

Thank you, Tatiana!

Dear Peter,

I attach a comprehensive study which may is not so easily available (it is a chapter from a recent book by Springer).

Here you will find lots of data and highly constructive discussions on biogeochemistry, biogeochemical cycling, food webs, trophic state and nutrient fluxes in a very special type of artificial lakes - mine pit lakes. I would specially recommend Section 3.3 (Biology and Ecosystems, starting on p. 107), since it includes information from many lakes, specially from Germany.

Probably the complexity is rather different than in a gravel pit lake, but the principles and scientific background behind their biogeochemical characterization (including the influence of dissolved nutrients on lake ecology) are the same, and thus they could be equally useful for you.

I hope this can help,

Cheers,

Javier

This is the biggest Lke in the world

Article Effect of Water Quality Characteristics on Fish Population o...

and...

Article An Update on the Global Stressors and Constraints Affecting ...

http://www.scielo.br/pdf/esa/v24n1/1809-4457-esa-s1413-41522019176320.pdf

http://rbciamb.com.br/index.php/Publicacoes_RBCIAMB/article/view/57/479

http://www.scielo.br/pdf/esa/v24n1/1809-4457-esa-s1413-41522019176320.pdf

http://rbciamb.com.br/index.php/Publicacoes_RBCIAMB/article/view/57/479