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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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one publication added to basket [135677]
Production of Ruppia cirrhosa (Petagna) Grande in mixed beds in Ringkøbing Fjord (Denmark) Kiørboe, T. (1980). Production of Ruppia cirrhosa (Petagna) Grande in mixed beds in Ringkøbing Fjord (Denmark). Aquat. Bot. 9(2): 135-143. https://dx.doi.org/10.1016/0304-3770(80)90014-5 In: Aquatic Botany. Elsevier Science: Tokyo; Oxford; New York; London; Amsterdam. ISSN 0304-3770; e-ISSN 1879-1522, meer

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Beschikbaar in	Auteur
VLIZ: Non-open access 354468 [ aanvragen ]

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Trefwoorden

Biological production > Primary production Population characteristics > Biomass Ruppia cirrhosa (Petagna) Grande, 1918 [WoRMS] Brak water

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Auteur		Top
Kiørboe, T., meer

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Abstract

Maximum biomasses of R. cirrhosa of 10 and 17 g dry wt/m-2 were reached in late June, followed by a distinct decline, in two mixed beds with a massive development of epiphytes. In a third mixed bed, which lacked noticeable epiphytes, a maximum biomass of 28 g dry wt /m-2 was reached by early September. Maximum biomasses of macrophytes other than R. cirrhosa were 104, 84 and 57 g dry wt /m-2 , respectively. Loss of leaves during the growing season was quantified. At the epiphyte-free station loss of leaves was considerably less than at the other two stations. Annual net production was estimated as 57 g dry wt/m-2 at the epiphyte-free station, and at the two other stations as 12 and 27 g dry wt/m-2 , respectively. Ratios of annual net production to maximum biomass (P /B) were found to vary between 1.2 and 2.0, with the higher value for the epiphyte-free population. Differences in phenology and turnover rates between stations are apparently due to the inhibitory effects of epiphytes.

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