Trophic Status and Phytoplankton Limitation Conditions in a Few Bulgarian and Hungarian Danube River Wetlands

1. Bondar E., Kurcera-Hirzinger V., Preiner S., Weigelhofer G., Schiemer F. and Hein T., 2007 – The Impact Of An Artificial Water Enhancement Scheme On Phosphorus Dynamics In An Urban Floodplain System In Vienna (Austria), International Review of Hydrobiology, 92, 4-5, 413-427.10.1002/iroh.200510985Search in Google Scholar

2. Canfield D. E. Jr., Langeland K. A., Maceina M. J., Haller W. T., Shireman J. V. and Jones J. R., 1983a – Trophic State Classification of Lakes with Aquatic Macrophytes, Canadian Journal of Fisheries and Aquatic Sciences, 40, 1713-1718.10.1139/f83-198Search in Google Scholar

3. Canfield D. E. Jr. and Jones J. R., 1983b – Assessing the trophic status of lakes with aquatic macrophytes, Lake and Reservoir Management, 1, 1, 446-451, DOI: 10.1080/07438148409354554.10.1080/07438148409354554Search in Google Scholar

4. Canfield D. E. Jr., Shireman J. V., Colle D. E., Haller W. T., Watkins C. E. and Maceina M. J., 1984 – Predictions of Chlorophyll-a in Florida lakes: Importance of Aquatic Macrophyte, Canadian Journal of Fisheries and Aquatic Sciences, 41, 497-501.10.1139/f84-059Search in Google Scholar

5. Carlson R. E., 1977 – A trophic state index for lakes, Limnology and Oceanography, 22, 361-369.10.4319/lo.1977.22.2.0361Search in Google Scholar

6. Carlson E., 1991 – Expanding the Trophic State Concept to Identify Non-Nutrient Limited Lakes and Reservoirs, Enhancing the states’ lake management programs, 1991, 59-71.Search in Google Scholar

7. Dahlgren R., Van Nieuwenhuyse E. and Litton G., 2004 – Transparency tube provides reliable water-quality measurements, California Agriculture, 58, 3, 149-153. http://CaliforniaAgriculture.ucop.edu.10.3733/ca.v058n03p149Search in Google Scholar

8. Gibson G., Carlson R., Simpson J., Schmeltzer E., Gerritson J., Chapra S., Heiskary S., Jones J. and Kennedy R., 2000 – Nutrient criteria, Technical guidance manual Lakes and Reservoirs https://books.google.bg/books?id=Zh8cbX0W0egC&pg=SL18-PA2&lpg=SL18-PA2&dq=Carlson+R.E.+1992+Expanding+the+trophic+state+concept+to+identify+non-nutrient+limited+lakes&source=bl&ots=D_AaB3DSnE&sig=f9xaCPPzWtN10AxZROqZiipJyRw&hl=bg&sa=X&ved=0ahUKEwjWj5PzfzLAhWKDZoKHT6eB6cQ6AEILTAC#v=onepage&q=Carlson%20R.E.%201992%20Expanding%20the%20trophic%20state%20concept%20to%20identify%20non-nutrient%20limited%20lakes&f=falseSearch in Google Scholar

9. Golterman H. L., Clymo R. S. and Ohnstad M. A. M., 1978 – Method for physical and chemical analysis of freshwaters, IBP Handbook no. 8, Blackwell Science Publishing, 213.Search in Google Scholar

10. Hammer D. A., Harper T. and Ryan P. D., 2001 – Palaeontologia Electronica, 4, 1, 9. http://palaeo-electronica.org/2001_1/past/issue1_01.htmSearch in Google Scholar

11. Havens K. E., 1994 – Seasonal and spatial variation in nutrient limitation in a shallow subtropical lake (Lake Okeechobee, Florida) as evidenced by trophic state index deviations, Archiv fur Hydrobiologie, 131, 1, 39-53.10.1127/archiv-hydrobiol/131/1994/39Search in Google Scholar

12. Hein T., Reckendorfer W., Thorp J. H. and Schiemer F., 2005 – The role of slackwater areas for biogeochemical processes in rehabilitated river corridors: examples from the Danube, Large Rivers, Archiv für Hydrobiologie, Supplement, 155, 1-4, 425-442.10.1127/lr/15/2003/425Search in Google Scholar

13. ISO 10260, 1992 ‒ Water quality – Measurement of biochemical parameters – Spectrometric determination of the chlorophyll-a concentration, 1-4.Search in Google Scholar

14. Jarosiewicz A., Ficek D. and Zapadka T., 2011 – Eutrophication parameters and Carlson-type trophic state indices in selected Pomeranian lakes, Limnological Review, 11, 1, 15-23.10.2478/v10194-011-0023-3Search in Google Scholar

15. Vollenweider R. (ed.), 1969 – A manual on methods for measuring primary production in aquatic environments, IBP, Handbook no. 12, Blackwell Scientific Publications Oxford and Edinburgh, 212.Search in Google Scholar