Productivity Problems of FreshwatersZ. Kajak, Anna Hillbricht-Ilkowska |
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Page 120
... ratio of the production of all filter feeders to the net phytoplankton production ( ratio P / P - 1 ) is quite big , on the average 16 % ; in periods of greater production of filtrators , i.e. May - July , when microfiltrators dominate ...
... ratio of the production of all filter feeders to the net phytoplankton production ( ratio P / P - 1 ) is quite big , on the average 16 % ; in periods of greater production of filtrators , i.e. May - July , when microfiltrators dominate ...
Page 357
... ratio of the absorbance of acetone extracts at a wavelength of 430 mu to that at 665 mμ , and suggests that this ratio provides a macroscopic attribute correlated with ecosystem complexity ; in ecosystems of low complexity the ratio ...
... ratio of the absorbance of acetone extracts at a wavelength of 430 mu to that at 665 mμ , and suggests that this ratio provides a macroscopic attribute correlated with ecosystem complexity ; in ecosystems of low complexity the ratio ...
Page 657
... ratio could be due to variation in this ratioin different species . ( 2 ) An increase in the phosphorus / chlorophyll ratio as the population declines could arise if pigment is quickly decomposed as cells die , but phosphorus remains ...
... ratio could be due to variation in this ratioin different species . ( 2 ) An increase in the phosphorus / chlorophyll ratio as the population declines could arise if pigment is quickly decomposed as cells die , but phosphorus remains ...
Contents
Running waters 579 | 15 |
Reports of Chairmen of the Symposium Working Groups | 21 |
PRODUCTION STUDIES ON THE WHOLE ECOSYSTEM OR AT LEAST TWO TROPHIC | 37 |
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algae algal allochthonous annual aquatic assimilation average bacteria bacterioplankton Baikal Batorin benthic benthos biological biomass calculated carbon Chironomides Chironomus chlorophyll Cladocera concentration Daphnia density depth detritus diatoms ecological ecosystem efficiency energy espèces estimated feeding filter feeders filtrators fish g/m² growth herbivores Hillbricht-Ilkowska Hydrobiol increase investigations Kajak kcal kcal m-2 kcal/m² kg/ha Kiev reservoir KRAKÓW Lake Krivoe Lake Krugloe larvae layer Limnol littoral loch macrophytes Marion Lake maximum measured Menshutkin metabolism method Mikołajskie Lake Myastro nannoplankton non-predatory nutrients Oligochaeta organic matter oxygen P/B coefficient pelagial period periphyton photosynthesis phytoplankton phytoplankton production plankton Poland ponds population predators predatory primary production Problems of Freshwaters production of phytoplankton Productivity Problems quantity ratio reservoir respiration rotifers Rybinsk reservoir samples season sediment Śniardwy species standing crop summer surface Table Tałtowisko temperature trophic levels values water bodies Winberg zone zooplankton