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| A re-evaluation of marine nematode productivity |
| Vranken, G.; Herman, P.M.J.; Vincx, M.; Heip, C.H.R. (1986). A re-evaluation of marine nematode productivity, in: Heip, C.H.R. et al. (Ed.) (1988). Collected papers on meiofauna dynamics and energy flow. : pp. 193-196 |
| In: Heip, C.H.R.; Herman, P.M.J.; Vranken, G. (Ed.) (1988). Collected papers on meiofauna dynamics and energy flow. Delta Institute for Hydrobiological Research: Yerseke, meer |
| Ook gepubliceerd als |
- Vranken, G.; Herman, P.M.J.; Vincx, M.; Heip, C.H.R. (1986). A re-evaluation of marine nematode productivity Hydrobiologia 135: 193-196, meer
- Vranken, G.; Herman, P.M.J.; Vincx, M.; Heip, C.H.R. (1987). A re-evaluation of marine nematode productivity, in: (1987). IZWO Coll. Rep. 17(1987). IZWO Collected Reprints, 17: pp. chapter 11 [Subsequent publication], meer
- Vranken, G.; Herman, P.M.J.; Vincx, M.; Heip, C.H.R. (1986). A re-evaluation of marine nematode productivity, in: Heip, C.H.R. et al. (Ed.) (1986). Ecology, ecotoxicology and systematics of marine benthos. pp. 1-6, meer
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| Trefwoorden |
Biologische productie; Meiobenthos; Wiskundige modellen; Nematoda [Nematoden] [WoRMS]; Marien |
| Abstract |
Nematodes are the most abundant multicellular animals in marine sediments but their role in the benthos has not been properly quantified yet. In nearly all energy-flow budgets of marine systems their annual production P is given as about nine times their biomass B and their part in the total energy-flow is consequently estimated as anywhere between 3 and 30% of the total (carbon) input in the benthic system. Our laboratory experiments demonstrate that nematode productivity is much higher than P/B ~ 9 per year and may reach values of over 60 for bacterial grazers. To obtain more reliable estimates for field populations we propose a regression equation relating egg-to-egg development time Tmin to temperature (t) and adult female weight (W in µg wet weight):log Tmin = 2.202-0.0461 t + 0.627 log W. When multiplied by the constant biomass turnover per generation (P/B)gen = 3, development rate 1/Tmin is a good predictor of daily P/B. This method was applied to two series of field data. A rather stable community from a sublittoral mud in the North Sea had an annual P/B = 20. A less stable Aufwuchs community from Sargassum in Japan had an annual P/B = 58. |
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