Original Articles

LEAF AREA AS A MEASURE OF STANDING CROP OF FLOATING AQUATIC MACROPHYTES

Published in: Journal of the Limnological Society of Southern Africa
Volume 8 , issue 1 , 1982 , pages: 29–32

DOI: 10.1080/03779688.1982.9633231

Author(s): P.C. Keulder Department of Botany, South Africa

Keywords: Azolla filiculoides , Salvinia molesta , growth rate , chlorophyll content , dry weight , fresh weight

Download full text Get new issue alerts

Abstract

Leaf area is evaluated as a measure of standing crop of Salvinia molesta Mitchell and Azolla filiculoides Lam. cultures under controlled conditions. Growth rates as derived from leaf area determinations agreed with pigment extractions and fresh and dry weight measures for S. molesta and in a reduced scale for A. filieuloides. Leaf area could be applied as a measure of standing crop of floating aquatic macrophytes and its main advantage lies in its non-destructive nature.

« THE FOOD OF BARBUS MATTOZI GUIMARAES. 1884, (PISCES: CYPRINIDAE) IN A ZIMBABWE IMPOUNDMENT

STUDIES ON THE ZOOBENTHOS OF SOME SOUTHERN CAPE COASTAL LAKES. SPATIAL AND TEMPORAL CHANGES IN THE BENTHOS OF SWARTVLEI, SOUTH AFRICA, IN RELATION TO CHANGES IN THE SUBMERGED LITTORAL MACROPHYTE COMMUNITY »