Open Marien Archief | Vlaams Instituut voor de Zee

Vlaams Instituut voor de Zee

Platform voor marien onderzoek

Open Marien Archief

Het Open Marien Archief van België (OMA) biedt vrije toegang tot de digitale publicaties over de Vlaamse kust en het Belgisch deel van de Noordzee, en alle andere mariene, estuariene en kustgebonden publicaties van Belgische auteurs en wetenschappers en van buitenlandse wetenschappers geaffilieerd aan een Belgische instelling.

Meer info

Nieuwe zoekopdracht
[ meld een fout in dit record ]mandje (0): toevoegen | toon Print-vriendelijke versie

Calculations of results in grazing experiments using the counting method
Tackx, M.L.M.; Van de Vrie, E.M. (1985). Calculations of results in grazing experiments using the counting method. Hydrobiol. Bull. 19(1): 29-36
In: Hydrobiological Bulletin. Netherlands Hydrobiological Society: Amsterdam. ISSN 0165-1404, meer
Peer reviewed article  

Ook gepubliceerd als
  • Tackx, M.L.M.; Van de Vrie, E.M. (1986). Calculations of results in grazing experiments using the counting method, in: IZWO Coll. Rep. 16(1986). IZWO Collected Reprints, 16: pp. chapter 11, meer

Beschikbaar in  Auteurs 

    Begrazing; Food intake; Food intake; Fytoplankton; Ingestion; Meetapparaten; Wiskundige analyse; Zooplankton; Marien

Auteurs  Top 
  • Tackx, M.L.M., meer
  • Van de Vrie, E.M.

    Different formulae used in the literature for calculation of ingestion rates are reviewed. Their applicability is discussed in relation to two criteria: the occurrence of saturation of the feeding and/or growth of the food particles. It is shown by simulations that the differences in results obtained by calculating ingestion following a linear or an exponential model are restricted to a few percent. Calculation of ingestion rates by substantial over- or underestimation depending on the growth constant of the food particles and the grazing time.The formula I = Vk(CztCzoekt)/N(I-ekt) is proposed for the calculation of ingestion rates under saturated circumstances.It is demonstrated that, with data obtained by multi-size class analysis, calculations on total particle concentrations are only feasible when growth constants and grazing coefficients are equal for all size classes considered.Attention is drawn to calculation problems resulting from non-normally distributed results and from non equal particle concentrations in control and grazing bottles at the beginning of the experiment. For the latter problem, two correction methods are proposed.

Alle informatie in IMIS valt onder het VLIZ Privacy beleid Top | Auteurs