The effect of particle size on the leaching of Scirpus cubensis Poepp & Kunth
Braz. j. biol
;
63(2): 195-205, May 2003. tab, mapas, graf
Article
in English
| LILACS
| ID: lil-343814
RESUMO
An investigation was made on the effects of detritus particle size on leaching rates in organic matter, and the associated environmental changes caused by detritus re-cycling in an oxbow lake (Lagoa do Infernäo). Experiments were conducted during the decay of an aquatic macrophyte specie, S. cubensis, which in turn led to the formation of colored compounds. The S. cubensis were collected from the Lagoa do Infernäo and taken to the laboratory where they were washed, dried, and fractionated using a sieve pedological set. The detritus was classified into six groups according to size, viz. 100, 10, 1.13, 0.78, 0.61, and 0.25 mm. Overall, the fragmentation process tended to increase the detritus fraction to be dissolved and to decrease the leaching rates owing to the possible dissolution of refracting matter. Fragmentation also caused the amount of colored compounds to increase and appeared to favor dissolved electrolyte release. Finally, in Lagoa do Infernäo fragmentation is probably mediated by the metabolic action of benthic communities
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Organic Chemicals
/
Fresh Water
Language:
English
Journal:
Braz. j. biol
Journal subject:
Biology
Year:
2003
Type:
Article
Affiliation country:
Brazil
/
United kingdom
Institution/Affiliation country:
Institute of Estuarine and Coastal studies/GB
/
Universidade Federal de Säo Carlos/BR
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