Biomass and production of periphyton attached to dead reed stems in Lake Maarsseveen

Photosynthesis–light relations of stream periphyton communities

“…-The range of PScm, reported here (Table ?) 'was similar to that reported by Jones and Adams (1982) and Meulemans (1988) for epiphyton and by Porter et al (1984) for zooxanthellae in coral, but Carpenter (198 5) found much higher rates for reefa!lgae. The data reported here are somewhat lower than typically reported for phytoplankton (Perry et al 198 1;Falkowski 198 1) or for periphyton in suspension (Jasper and Bothwell 1986).…”

“…These values were on the low end of the range of values reported for other attached communities (Jones and Adams 1982;Porter et al 1984;Meulemans 1988) and are lower than reported for phytoplankton (Platt et al 1980;Perry et al 198 1) or periphyton in suspension (Jasper and Bothwell 1986). a!…”

“…The positive relationship between PSChlM and cx discussed earlier may reflect either the narrow range of Zk observed (constraining (x and PSM) or, conversely, be responsible folr the narrow range of I, (if a and P!& are responding to light in some regular way). Meulemans and Roos (1985) suggested that light availability to cells in the lower layers of periphyton matrices may regulate biomass accumulation by influencing the strength of attachment of the lower layers to the substratum. Because the PS of several of the communities studied here was saturated well below ambient light levels, factors other than light apparently limit biomass accumulation and thus periphyton production.…”

“…Data for disrupted communities, 'however, may not reflect performance under natural conditions (see Jasper and Bothwell 1986). Further, the P-I responses of attached algae are not necessarily similar to those characteristic of phytoplankton under --- (Porter et al 1984;Meulemans 1988) In contrast to phytoplankton, periphyton communities have extensive vertical development on a small scale, and cells within the community matrix are densely packed. The physical structure of periphyton alters the environmental conditions within the matrix and influences the growth of cells and their rates of primary production and nutrient uptake (Sand-Jensen 1983;Lock et al 1984).…”

Periphyton dry mass, ash content, and chlorophyll content on natural substrata in three water bodies of different trophy

“…Maximal values were achieved in autumn, after rapid growth which was probably In spite of some differences in dry mass of periphyton between investigated water bodies, generally all communities belonged to the low dry mass category (category III, according to the classification of Lakatos et al 1998; Table 1), with the exception of periphyton on Potamogeton lucens and periphyton on Phragmites australis dominated by colonies of Cordylophora caspia in Szczecin Lagoon, which can be classified as categories I and II (high and average dry mass), respectively (Table 3). Similarly, the periphyton which developed on the submerged stems of the common reed in oligotrophic Lake Maarsseveen in Holland was of low mass (Meulemans, Heinis 1983), as in eutrophic and shallow Lake Kis-Balaton and Kiskore Reservoir in Hungary (Kiss et al 2003). Periphyton of Typha domingensis in Imboassica Lagoon in Brazil was classified as low to average dry mass (Fernandes, Esteves 2003).…”