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| one publication added to basket [134710] |
Population dynamics and production of euphausiids: 2. Thysanoessa inermis and T. raschi in the North Sea and American Coastal Waters
Lindley, J.A. (1980). Population dynamics and production of euphausiids: 2. Thysanoessa inermis and T. raschi in the North Sea and American Coastal Waters. Mar. Biol. (Berl.) 59(4): 225-233
In: Marine Biology: International Journal on Life in Oceans and Coastal Waters. Springer: Heidelberg; Berlin. ISSN 0025-3162; e-ISSN 1432-1793, meer
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| Trefwoorden |
Abundance
Population dynamics
Properties > Physical properties > Weight > Dry weight
Crustacea [WoRMS]; Euphausiacea [WoRMS]; Thysanoessa Brandt, 1851 [WoRMS]; Thysanoessa inermis (Krøyer, 1846) [WoRMS]
Marien/Kust |
| Abstract |
Results from the Continuous Plankton Recorder (CPR) survey for 1966 and 1967 are used to describe seasonal changes in abundance, size and aspects of the population structure of Thysanoessa inermis (Krøyer) and T. raschi (M. Sars) at a depth of 10 m in the North Sea and in American coastal waters from the Grand Banks to the Gulf of Maine. Production and dry weight were estimated from these data. Two year-groups were usually present in the breeding population, the proportion surviving into a second year being higher in American waters than in the North Sea. Annual production for each species was within the range 0.69 to 4.66 mg m-3 and the ratio between production and biomass (P:B) was between 1.3 and 4.2; values outside these ranges were obtained only for American coastal waters in 1967, when the frequency of sampling was low. |
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