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The effect of temperature on leaf decomposition and diversity of associated aqu...
Gonçalves, Ana Lucia; Graça, Manuel A. S.; Canhoto, CristinaWe examine the relative importance of substrate quality and temperature in the establishment of aquatic hyphomycete assemblages and in their ability to decompose leaves. We used leaves of alder (Alnus glutinosa) and oak (Quercus robur) and we tested four temperatures (5 , 10 , 15 and 20 C). Differences in decomposition rates and fungal assemblages were higher substrata than across temperatures. In both speci...
Leachates of Eucalyptus globulus in Intermittent Streams Affect Water Parameter...
Canhoto, Cristina; Laranjeira, CeliaLow order streams running through Eucalyptus globulus plantations in Central Portugal are frequently reduced to isolated permanent or temporary summer pools with darkly stained water due to leaf leachates. Here we assess the toxicity of such leachates to the shredder Sericostoma vittatum. Leachates resulted in deoxygenated and more acid water, and increased its phenolic content and conductivity. S. vittatum exp...
Decomposition of Fire Exposed Eucalyptus Leaves in a Portuguese Lowland Stream
Gama, Mafalda; Gonçalves, Ana Lúcia; Ferreira, Verónica; Graça, Manuel A. S.; Canhoto, CristinaWe compared fire exposed with normal abscised eucalyptus leaves incubated in a stream running through eucalyptus plantations in central Portugal, in terms of breakdown rates, microbial activity, diversity and macroinvertebrate abundance. Although leaves exposed to fire had lower nutritional value, mass loss was similar for both leaf types (k = 0.0089-0.0095 d-1 for fire and k = 0.0084-0.00103 d-1 for normal lea...
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