✦ LIBER ✦

Influence of the mixing regime on algal photosynthetic performance in laboratory scale enclosures

✍ Scribed by Jacco Kromkamp; Ferdinand Schanz; Machteld Rijkeboer; Elisa Berdalet; Bomchul Kim; Herman J. Gons

Publisher: Springer
Year: 1992
Tongue: English
Weight: 659 KB
Volume: 238
Category: Article
ISSN: 1573-5141
DOI: 10.1007/bf00048779

No coin nor oath required. For personal study only.

✦ Synopsis

The photosynthesis of plankton sampled from the eutrophic Lake Loosdrecht was studied in Laboratory Scale Enclosures (LSEs) with regard to the rate of mixing. First, two LSEs were operated at different mixing rates. No significant differences in photosynthetic performance were found, with the exception of a depressed photosynthesis in the afternoon in the LSE which had a low mixing rate. Secondly, when mixing was stopped, the phytoplankton which stayed in the dark due to the steep light gradient in the LSE responded by changing its maximal photosynthetic capacity. The results show that the filamentous cyanobacteria in the lake can respond rapidly to changes in the depth of the mixed layer by altering their photosynthetic performance.

📜 SIMILAR VOLUMES

The influence of light/dark cycles in mi

The influence of light/dark cycles in mixed algal cultures on their productivity

✍ Johan U. Grobbelaar 📂 Article 📅 1991 🏛 Elsevier Science 🌐 English ⚖ 658 KB

Light-Nutrient Influences on Biomass, Ph

Light-Nutrient Influences on Biomass, Photosynthetic Potential and Composition of Suspended Algal Assemblages in the Middle Cape Fear River, USA

✍ Lindsay L. Dubbs; Stephen C. Whalen 📂 Article 📅 2008 🏛 John Wiley and Sons 🌐 English ⚖ 379 KB 👁 1 views

## Abstract Dilution bioassays were conducted to evaluate the impact of nutrients on biomass (chlorophyll __a__), photosynthetic potential, and class composition of suspended algal assemblages in the middle Cape Fear River (USA). Ambient concentrations of dissolved inorganic nitrogen (DIN) and solu

Influence of acoustics and the flow regi

Influence of acoustics and the flow regime in the boundary layer on nozzle walls on the mixing layer of an immersed jet

✍ A. A. Pavel'ev; V. I. Tsyganok 📂 Article 📅 1982 🏛 Springer 🌐 English ⚖ 688 KB

The influence of water stress on the pho

The influence of water stress on the photosynthetic performance and stomatal behaviour of tree seedlings subjected to variation in temperature and irradiance

✍ O. Osonubi; W. J. Davies 📂 Article 📅 1980 🏛 Springer-Verlag 🌐 English ⚖ 801 KB

Seedlings of Betula pendula Roth. and Gmelina arborea L. were subjected to variation in temperature and irradiance. The influence of a mild water-stressing treatment on the photosynthetic performance and stomatal behaviour of these plants was assessed. For both species, the shape of the relationship

Influence of processing conditions in sm

Influence of processing conditions in small-scale melt mixing and compression molding on the resistivity and morphology of polycarbonate–MWNT composites

✍ Gaurav Kasaliwal; Andreas Göldel; Petra Pötschke 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 708 KB

Topical vehicles based on natural surfac

Topical vehicles based on natural surfactant/fatty alcohols mixed emulsifier: The influence of two polyols on the colloidal structure and in vitro/in vivo skin performance

✍ Snezana Savic; Christian Weber; Slobodanka Tamburic; Miroslav Savic; Christel Mü 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 467 KB

There is a growing need for in-depth research into new skin-and environment-friendly surfactants, such as alkylpolyglucosides. The aim of this study was to assess whether, to which extent and by what mechanism the two commonly used hydrophilic excipients, propylene glycol (PG) and glycerol (GL), aff