caa a22 4500 477096859 CHVBK 20180405111530.0 cr unu---uuuuu 170330e19960601xx s 000 0 eng 10.1007/BF01995828 doi (NATIONALLICENCE)springer-10.1007/BF01995828 Influence of environmental parameters on the biomass development of Ruppia drepanensis populations in Doñana National Park: the importance of conditions affecting the underwater light climate [Elektronische Daten] [L. Santamaría, C. Montes, M. Hootsmans] The development of submerged plant communities dominated byRuppia drepanensis Tineo in the brackish marsh of the Doñana National Park (SW Spain) was coupled to seasonal variation in environmental factors for two consecutive years. Plant biomass increased rapidly in early spring (March), with steady biomass yields (up to 100 g afdw m−2) together with abundant flowering and fruiting in late spring (April-May). Wind-induced sediment resuspension and periphyton growth strongly influenced the light climate experienced by the submerged vegetation, while a phytoplankton effect was generally negligible. Development of the submerged vegetation coincided with a decrease in water extinction coefficient and in bicarbonate concentration. Thus, where dense macrophyte meadows develop, light climate probably is the limiting factor in the early spring, while temperature and bicarbonate levels are so by the end of the season. Interannual variation was found to be very high, both in abundance and distribution of the submerged vegetation, mainly because of differences in rainfall which influenced the inundation cycle. Grazing by waterfowl accounted also for this effect, as in dry years birds concentrate in the few wetlands still containing water. Kluwer Academic Publishers, 1996 brackish marsh nationallicence growth nationallicence light attenuation nationallicence submerged macrophyte nationallicence Santamaría L. International Institute for Infrastructural, Hydraulic and Environmental Engineering, PO Box 3015, 2601, DA Delft, The Netherlands aut Montes C. Dept. Ecology, Autonomous University of Madrid, 28049, Madrid, Spain aut Hootsmans M. International Institute for Infrastructural, Hydraulic and Environmental Engineering, PO Box 3015, 2601, DA Delft, The Netherlands aut International Journal of Salt Lake Research Kluwer Academic Publishers 5/2(1996-06-01), 157-180 1037-0544 5:2<157 1996 5 10770 https://doi.org/10.1007/BF01995828 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01995828 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Santamaría L. International Institute for Infrastructural, Hydraulic and Environmental Engineering, PO Box 3015, 2601, DA Delft, The Netherlands aut NATIONALLICENCE 700 1- Montes C. Dept. Ecology, Autonomous University of Madrid, 28049, Madrid, Spain aut NATIONALLICENCE 700 1- Hootsmans M. International Institute for Infrastructural, Hydraulic and Environmental Engineering, PO Box 3015, 2601, DA Delft, The Netherlands aut NATIONALLICENCE 773 0- International Journal of Salt Lake Research Kluwer Academic Publishers 5/2(1996-06-01), 157-180 1037-0544 5:2<157 1996 5 10770 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer