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The effects of siltation on Atlantic salmon, Salmo salar L., embryos in the River Bush
TLDR
The tolerance of incubating salmon embryos to spawning gravel sedimentation was examined under hatchery conditions and also in the natural state on the River Bush, County Antrim, Northern Ireland, and mean survival was found to be better than that recorded in the hatchery, although no clear relationship was established between the level of fines and percentage survival in the wild.
Seasonality, population dynamics and production of planktonic rotifers in Lough Neagh, Northern Ireland
TLDR
The abundances, population dynamics and production of the rotifer community of Lough Neagh were examined for a three year period and K. cochlearis as the most successful species is explained as its perennial appearance and adaptation to the low annual temperature cycle found in the lough.
The respiration rate of the resting eggs of Leptodora kindti (Focke 1844) and Bythotrephes longimanus Leydig 1860 (Crustacea, Cladocera) at environmentally encountered temperatures
TLDR
Results are used to explore the relationships between the duration of dormancy and egg size in the natural habitat and to investigate the relationship between egg size and temperature in Leptodora kindti and Bythotrephes longimanus.
Some observations on the populations of Mysis relicta in Lough Neagh
Within the British Isles, the occurrence of Mysis relicta Loven is restricted to relatively few lakes and rivers (Tattersall and Tattersall, 1951). Two large lakes, Lough Neagh and Lough Erne,
Seasonality of Rotifers and Temperature in Lough Neagh, N. Ireland
Long runs of seasonal rotifer population data allow analysis of seasonal occurrence using mathematical tools. The application of Fourier analysis to a 15 year dataset describes seasonality in simple
The estimation of secondary production in a natural population of Daphnia hyalina (Leydig) using alternative methods of computation
  • T. E. Andrew
  • Environmental Science
    Hydrobiologia
  • 1 October 1983
TLDR
A single set of population data for Daphnia hyalina was used to estimate production using four methods on a daily and annual basis, which probably underestimates production whereas the growth increment method probably overestimates production.
Seasonal variations in the metabolic rates of zooplankton populations in a Thames Valley reservoir
Measurements of metabolic rates of natural populations of zooplankton were made using a closed bottle technique in situ. Results showed a marked seasonality inexplicable in terms of simple
Diurnal changes in zooplankton respiration rates and the phytoplankton activity in two Chilean lakes
TLDR
Distinct diurnal cycles were observed in Embalse Rapel with high respiratory rates for the spring cladoceran dominated zooplankton at dawn and dusk and very restricted diurnal variation was seen in the copepod dominatedZooplankston of Lago Chungará.
Seasonality of rotifers and temperature in Lough Neagh, N. Ireland
Long runs of seasonal rotifer population data allow analysis of seasonal occurrence using mathematical tools. The application of Fourier analysis to a 15 year dataset describes seasonality in simple
A simple method for fitting Bělehrádek's equation to embryonic development data of zooplankton
TLDR
Differences in duration of embryonic development of Lough Neagh populations and that of previously published data for these species are discussed.
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