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Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.

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A re-evaluation of marine nematode productivity Vranken, G.; Herman, P.M.J.; Vincx, M.; Heip, C.H.R. (1988). A re-evaluation of marine nematode productivity, in: Heip, C.H.R. et al. (Ed.) Collected papers on meiofauna dynamics and energy flow. pp. 1-4 In: Heip, C.H.R. et al. (Ed.) (1988). Collected papers on meiofauna dynamics and energy flow. Delta Institute for Hydrobiological Research: Yerseke. , meer Is gerelateerd aan: 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 Is gerelateerd aan: 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.) Ecology, ecotoxicology and systematics of marine benthos. pp. 1-6, meer

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Beschikbaar in	Auteurs
VLIZ: Open access 272601 [ download pdf ]

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Trefwoorden

Aquatic communities > Benthos > Meiobenthos Biological production Models > Mathematical models Nematoda [WoRMS] Marien/Kust

Author keywords

nematodes, meiobenthos, production, P/B, generation time

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Auteurs		Top
Vranken, G. Herman, P.M.J., meer Vincx, M., meer Heip, C.H.R., meer

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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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