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Title: Seasonal patterns op biomass variation of Ruppia cirrhosa (Petagna) Grande and Potamageton pectinatus L. in a coastal logoon
Author: Menéndez López, Margarita
Comín, F. A. (Francisco A.)
Keywords: Plantes aquàtiques
Ebre, Delta de l' (Catalunya)
Aquatic plants
Ebro River Delta (Catalonia)
Issue Date: 1989
Publisher: Consejo Superior de Investigaciones Científicas (CSIC)
Abstract: Coastal lagoons where salinity varies within a wide range during the year are colonized by euryhaline macrophytes which can develop extensive beds. Seasonal changes in biomass of Ruppia cirrhosa and Potamogeton pectinatus were studied in Tancada Lagoon (Ebro Delta, NE Spain) in order to reveal the environmental factors controlling their population development. Ruppia cirrhosa occupy a larger area of the lagoon than Potarnogeton pectinatus. Their maximum above ground biomasses are also different (495 g m-2 and 351 g m-2 ash free dry weight, respectively). Below ground biomass of Ruppia cirrhosa is between 9 and 53 % of the above ground biomass, while it is 3-40 % for Potamogeton pectinatus. Chlorophyll a contents show fluctuations similar to biomass. Low salinity and high turbidity caused by freshwater inflows favour Potamogeton expansion, while Ruppia development is favoured by high salinity and transparent water.
Note: Reproducció del document publicat a:
It is part of: Scientia Marina, 1989, vol. 53, num. 2-3, p. 633-638
ISSN: 0214-8358
Appears in Collections:Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)

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