The life cycle dynamics and production of zooplankton in Øvre Heimdalsvatn

@article{Larsson1978TheLC,
  title={The life cycle dynamics and production of zooplankton in {\O}vre Heimdalsvatn},
  author={Petter Larsson},
  journal={Ecography},
  year={1978},
  volume={1},
  pages={162-218}
}
The zooplankton in Ovre Heimdalsvatn was studied from May 1969 to Aug 1973 in order to obtain knowledge about their functioning and role in the lake ecosystem. The paper concentrates on the main species: Holopedium gibberum, Bosmina longispina, Cyclops scutifer. Heterocope saliens, Conochilus unicornis, Polyarthra vulgaris and Kellicottia longispina but Megacyclops gigus, Daphnia longispina and ciliated cells are also considered. The development of the populations was fairly synchronized and… Expand
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References

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The lake ecosystem of Ovre Heimdalsvatn
TLDR
On account of the long period of ice cover and the rapid rise in temperature after ice break, many organisms (both planktonic and benthic) showed synchronous development. Expand
Ecological energetics of a natural population of the predaceous zooplankter Leptodora kindtii Focke (Cladocera)1
TLDR
The results indicate that the predator - prey relationships are quite complex, with the Leptodora population usually depending on at least two prey species at any given time. Expand
The Trichoptera of Øvre Heimdalsvatn
TLDR
Trichopteran larvae were sampled on soft substrata at all depths, on stony substrata in the exposed zone, and the adults in emergence traps, placed along the lake shore, where the two most numerous species showed different habit preferences. Expand
Review of studies on feeding of aquatic invertebrates conducted at the Institute of Biology of Inland Waters, Academy of Science, USSR.
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For most invertebrates feeding on natural food at optimum concentrations, index of assimilation varies widely, but rarely exceeds 50%, and the assimilability of food is very low. Expand
The Plecoptera of Øvre Heimdalsvatn
TLDR
During the winter N avicularis occurred in large numbers on soft bottom at nearly all depths while D. bicaudata was only recorded on stony substratum in shallow water and was therefore more susceptible to predation and was recorded in trout stomachs during most of the year. Expand
The energy budget of the brown trout population of ovre Heimdalsvatn
TLDR
The specific energy value of trout increased with increasing weight of the fish, and an energy decrease of almost 50% was demonstrated for the spawning trout of both sexes, and the calorific values prior to spawning were not reached before the next summer. Expand
The Chironomidae of the exposed zone of Øvre Heimdalsvatn
TLDR
The species composition and relative abundance of the four main groups of Chironomidac indicate that Ovre Heimdalsvatn is a subarctic lake, with a strong oligotrophic character. Expand
Production of Zooplankton in Char Lake
TLDR
Cross-calibration of sediment traps and zooplankton traps suggested that exuviae collected in sediment traps can be used to measure crustacean zoopLankton production. Expand
ZOOPLANKTON OF LAKE HAZEN, ELLESMERE ISLAND, AND A NEARBY POND, WITH SPECIAL REFERENCE TO THE COPEPOD CYCLOPS SCUTIFER SARS
TLDR
Zooplankton was studied in the large, high-arctic Lake Hazen and in a small nearby pond, where numbers of C. scutifer were greatly reduced as a result of summer ice conditions between 1958 and 1961, while the rotifer Keratella hiemalis increased. Expand
Vertical Distribution and Seasonal Abundance of Zooplankton in Two Shallow Lakes of the Experimental Lakes Area, Northwestern Ontario
TLDR
Seasonal variations in the abundance of zooplankton were studied in lakes 122 and 132 for a period of 10 months beginning in mid-May 1968 and compared with that found in other studies. Expand
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