Some trophic relations in the benthos of shallow parts of Marion Lake

Kajak, Zdzisław; Kajak, Anna

Skip to main menu
Skip to search engine
Skip to content
Skip to footer

Download

Title: Some trophic relations in the benthos of shallow parts of Marion Lake

Abstract:

Positive correlation in the distribution of the invertebrate predators and their prey was stated. The biomass of main predators slightly exceeded the biomass of their prey. Selectivity of the prey and daily food rations of predators (equalling 8-19% of predators' biomass) in situ were estimated by the method of "experimental cylinders". Predators feeding strongly depended on the presence of other predators of the same and other species, and decreased with their increasing density. The strong pressure of predators suggests either very short turnover time of their prey, or the immigration of the prey from other environments.

References:

1. Anderson R. O. 1959 - A modified technique for sorting bottom fauna samples - Limnol. Oceanogr. 4: 223-225.
2. Efford I. E. 1970 - Marion Lake Project. International Biological Programme. Canada. Report 1969-1970 - The Institute of Animal Resource Ecology, University of British Columbia, 82 pp.
3. Efford I. E. 1971 - Marion Lake Project. International Biological Programme. Canada. Report 1970-1971 - The Institute of Animal Resource Ecology, University of British Columbia, 93 pp.
4. Efford I. E. 1972a - An interim review of the Marion Lake Project (In: Productivity problems of freshwaters. Eds.Z. Kajak, A. Hillbricht-Ilkowska) - PWN, Warszawa-Kraków, 89-100.
5. Efford I. E. 1972b - Marion Lake Project. International Biological Programme. Canada. Report 1971-1972 - The Institute of Animal Resource Ecology, University of British Columbia, 90 pp.
6. Efford I. E., Hall K. J. (in press) - An analysis of ecosystems - In Royal Society volume on Canadian IBP.
7. Hargrave B. T. 1971 - An energy budget for a depositfeeding amphipod - Limnol. Oceanogr. 16: 99-103.
8. Jonasson P. M. 1972 - Ecology and production of the profundal benthos in relation to phyto-plankton in Lake Esrom - Oikos, 14: 1-148.
9. Kajak Z. 1968 - Analiza eksperymentalna czynników decydujących o obfitości bentosu (ze szczególnym uwzględnieniem Chironomidae) - Zesz. nauk. Inst. Ekol. PAN, Warszawa, 94 pp.
10. Kajak Z., Dusoge K. 1970 - Production efficiency of Procladius choreus Mg (Chironomidae, Diptera) and its dependence on the trophic conditions - Pol. Arch. Hydrobiol. 17: 217-224.
11. Kajak Z., Dusoge K., Prejs A. 1968 - Application of the flotation technique for the estimation of the absolute numbers of benthic organisms - Ekol. pol. A, 16: 607-620.
12. Kajak Z., Warda J. 1968 - Feeding of benthic non-predatory Chironomidae in lakes - Ann. Zool. Fenn. 5: 57-64.
13. Monakov A. V., Sorokin Ju. I. 1972 - Some results on investigation on nutrition of water animals (In: Productivity problems of freshwaters. Eds. Z. Kajak, A. Hillbricht-Ilkowska) - PWN, Warszawa-Kraków, 765-773.
14. Waters T. F. 1969 - The turnover ratio in production ecology of freshwater invertebrates - Am. Nat. 103: 173-185.
15. Wójcik-Migała I. 1968 - Wpływ karpi dwu- i trzyletnich na bentos stawów - Acta hydrobiol. 10: 179-203.
16. Zięba J. 1973 - Macrobenthos in ponds with sugar factory wastes - Acta hydrobiol. 15: 113-129.