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The breakdown of leaves of poplar and holm oak in three Moroccan streams : effect of burial in the sediment

Published online by Cambridge University Press:  01 February 2009

B. Naamane ,
H. Chergui  and
E. Pattee
B. Naamane
Affiliation:
Hydrobiologie et Écologie Générale, Faculté des Sciences Dhar el Mehraz, B.P. 1796, Fès-Atlas, Maroc.
H. Chergui
Affiliation:
Hydrobiologie et Écologie Générale, Faculté des Sciences Dhar el Mehraz, B.P. 1796, Fès-Atlas, Maroc.
E. Pattee
Affiliation:
UMR CNRS Écologie des Hydrosystèmes Fluviaux, Université Claude Bernard Lyon-I, 69622 Villeurbanne Cedex, France.
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Abstract

Weight loss of leaves of Populus nigra and Quercus ilex was observed in coarse-mesh bags exposed in three watercourses and their sediment (-30 and -50 cm) near the city of Fes. The watercourses were: Oued Sebou (a river), Oued Sidi-Harazem (issuing from a warm spring), and Ain Chkef (a cold spring). Weight loss was faster at the surface than within the sediment. Weight loss was faster in poplar than in the tough holm oak leaves. At all levels, weight loss was fastest in Oued Sebou where the water flowed faster both at the surface and within the coarser sediment. It was slowest in the cold spring. Thus the influence of leaf texture, current velocity, and temperature were stressed.

Keywords

decompositionpoplarholm oakburialwatercoursedécompositionpeuplierchêne-vertenfouissementcours d'eau
Type
Research Article
Information
Annales de Limnologie - International Journal of Limnology , Volume 35 , Issue 4 , December 1999 , pp. 263 - 275
Copyright
© Université Paul Sabatier, 1999

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