Distribution of fish numbers and biomass in barbel region of the river and the adjoining old river-beds

Penczak, Tadeusz; Zalewski, Maciej

Przejdź do menu głównego
Przejdź do wyszukiwarki
Przejdź do treści
Przejdź do stopki

Pobierz

Tytuł: Distribution of fish numbers and biomass in barbel region of the river and the adjoining old river-beds

Abstrakt:

In the meandering river of the barbel region, in the cross-section of river-bed, 3 zones can be distinguished: 1. concave bank – current, 2. convex bank, 3. the middle of the bed between those two with sandy beaches and islands, and the longitudinal section is the transition current zone. Part of the river-bed with repeated in a sequence four zones is differentiated not only from the hydrographical point of view, but also from the biological. The most abundant in ichthyofauna is the current zone (concave bank), then the zone at convex bank, whereas the other zones are exceptionally poor in ichthyofauna although it cannot be said that they are not productive. The dying out of species considered as indicatory for the barbel region is observed as a result of increasing pollution. The zones colonized by them remain unproductive or can be occupied by small roach.

Bibliografia:

1. Backiel T. 1964 - Populacje ryb w systemie rzeki Drwęcy - Rocz. Nauk roln. 84-B-2: 193-214.
2. Backiel T. 1965 - River fisheries - XVI Int. Congr. Limnol. Pol. Cracow: 57-68.
3. Bali R. C. 1948 - A summary of experiments in Michigan lakes on the elimination of fish popuiations with rotenone, 1934-1942 - Trans. Am. Fish. Soc. 75: 139-146.
4. Balon E. K. 1963 - Einige Fragen uber das Vorkommen und Biomasse der Fische in Inundationsseen und im Hauptstrom der Donau in der Zeit des niedrigen W asserstandes - Zool. Anz. 171: 415-423.
5. Balon E. K. 1967 - Vyvoj ichtyofauny Dunaja, jej sucasny stav a pokus o prognozu dalsich zmien po vystavbe vodnych diel - Biol. Prace., 13/1: 1-121.
6. Eschmeyer R. W. 1939 - Analysis of the complete fish population from Howe Lake, Crawford County, Michigan - Pap. Mich. Acad. Sci. 24: 117-137.
7. Holcik J. 1966 - Ichtyologicky vyskum Karpatskeho obluka. 4. Ichtyofauna rieky Hornad so zretelom na vybudovanie vodneho diela ruzin - Biol. Prace, 12/1: 76-116.
8. Huet M. 1959 - Profiles and biology of western european streams as related to fish management - Trans. Am. Fish. Soc. 88: 155-163.
9. Huet M., Timmermans J. A. 1963 - La population piscicole de la Semois inferieure, grosse riviere beige du type superieur de la Zone a Barbeau - Trav. Stn. Rech. Groenendael D, 36: 1-31.
10. Kędzior A., Penczak T. 1972 - Zastosowanie prądu dwupołówkowego wyprostowanego w połowach gospodarczych - Gosp. rybna, 2: 18-19.
11. Larsen K. 1955 - Fish population analyses in some small Danish trout streams by means of D. C. electro-fishing with special reference to the populations of trout (Salmo trutta L.) - Meddr. Danm. Fisk. - og Havunders. 10: 1-69.
12. Larsen K. 1961 - The fish population of a peat pit as determined by rotenone poisoning - Meddr. Danm. Fisk. - og Havunders. 3: 117-132.
13. Libosvarsky J. 1966 - On the stability and population of chub Leuciscus cephalus L. in a stream section - Zool. Listy, 15: 161-17 4.
14. Muller K. 1953 - Produktionsbiologische Untersuchungen in nordschwedischen Fliessgewassern. Teil: 2. Untersuchungen uber Verbreitung, Bestandsdichte, Wachstum und Ernahrung der Fische der nordschwedischen Waldregion - Rep. Inst. Freshwat. Res. 35: 149-183.
15. Penczak T. 1969 - The ichthyofauna of the rivers of the Łódź Upland and adjacent areas. Part II. Ecology - Acta Hydrobiol. 11: 313-338.
16. Penczak T. 1972 a - The effect of the sewage discharged from the towns of Częstochowa and Radomsko on the structure of fish community in the Warta river - Ochr. Przyr. 37: 345-360.
17. Penczak T. 1972 b - Structure of fish groupings in the rivers and streams of the river Nida drainage basin – Ekol. pol. 20: 327-344.
18. Penczak T., Zalewski M. 1973 - The effectiveness of electrofishing with the rectified pulsating current in the zones of river of medium size, evaluated by the method of successive catches - Acta Hydrobiol. 15: 343-355.
20. Solewski W. 1965 - Rybostan potoku Białka Tatrzańska, ze szczególnym uwzględnieniem charakterystyki pstrąga potokowego (Salmo trutta morphafario L.) – Acta Hydrobiol. 7: 197-224.
21. Stangenberg M. 1965 - Coarse fish research in Poland - Proc. II British Coarse Fish Conference, Liverpool; 72-86.