Evaluation of the water quality of future tributaries to the planned Dobczyce reservoir (Poland) using macroinvertebrates

✍ Scribed by Tadeusz M. Fleituch

• Publisher: Springer
• Year: 1992
• Tongue: English
• Weight: 853 KB
• Volume: 237
• Category: Article
• ISSN: 1573-5141
• DOI: 10.1007/bf00016035

✦ Synopsis

The bottom fauna of 5 tributaries of the planned Dobczyce reservoir and the River Raba below the dam was investigated in the preimpoundment period . The abundance of macrofauna varied between 46 taxa (Wolnica stream) and 66 taxa (Brzez6wka stream). Each station showed individual taxa composition except for the RABA-u and RABA-d (84% similarity). On the basis of 7 different biological indices the stations were divided into 3 categories: unpolluted (Brzezbwka), slightly polluted (Bulinka, Trzemehia and both Raba stations), and moderately polluted (Wolnica). Most sensitive to chemical pollution was the BIOTIC-index. The combination of environmental variables was used to predict biological indices. The most significant relationship (P<0.01, R~ = 0.71) was found between the BIOTIC-index and physico-chemical factors. Some problems in the application of indices (sampling, indicator organisms and interpretation of the results) are discussed and local adaptations of methods used are recommended.

Mean concentration of nutrients and DOC

Annual load of nutrients and DOC Nitmgan anion.. DOC (mg I-')