A test of the hypothesis of ecological equivalence in an Australian subtropical rain forest

We tested the hypothesis that tree species in a subtropical rain forest in south-east Queensland are ecologically equivalent and therefore have identical environmental requirements for their regeneration. We assessed the evidence that juveniles of species differed in their distributions in treefall gap microsites and along gradients of light availability, soil pH, soil PO4-P availability and soil NO3-N availability. Pairwise comparisons were made on a subset of the common species selected on the basis that they showed a relatively high level of positive association, and would therefore, a priori, be expected to have similar regeneration requirements. Detailed comparisons between the species failed to demonstrate evidence for species differentiation with respect to their tolerance of the disturbance associated with gap microsites or to the gradient of NO3-N availability. However, species differed markedly in their distributions along the soil pH gradient and along the gradients of light availability and soil PO4-P availability. The overall level of ecological differentiation between the species is high: seven out of the 10 possible species pairings showed evidence for ecological differentiation. Such niche differentiation amongst the juveniles of tree species may play an important role in maintaining the species richness of rain-forest communities.

Anti-Mycobacterium tuberculosis activity of fungus Phomopsis stipata

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Desreplicação dos metabólitos secundários produzidos por Phomopsis stipata, um endófito de Styrax camporum (Styracaceae)

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Detecção in silico e caracterização estrutural dos constituintes micromoleculares majoritários presentes no fungo endofitico Phomopsis stipata isolado de folhas de Styrax camporum Pohl (Styracaceae) usando CLAE-DAD/EMAR e CG-MS

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Aportacion al conocimiento de los hongos del SE de EspaÑa. VIII. Afiloforales (Basidiomicetes)

Se da cuenta de 131 especies de Afiloforales para el S.E. español, se estudian 92 de ellas, indicando las localidades donde han sido registradas. 50 de estas especies son citas nuevas para la zona y de entre ellas: Antrodia ramentacea, A. sinuosa, Crustoderma dryinum, Ciphellopsis confusa, Heningsomyces púber, Hydnellum concrescens, Lachnella alboviolascens, Oxypoporus latemarginatus, Steccherinum ciliolatum y Stereum raméale son posiblemente nuevas para el catálogo español. Se describen además de éstas, las siguientes especies: Hyphodontia arguta, H. pruni, H. stipata, Perenniporia rosmaxini y Tyromices inocybe. Se incluye catálogo por orden alfabético de las 131 especies y se las relaciona con las 33 especies vasculares que actúan como substrato para ellas.

Estudo químico e biológico de fungos endofíticos isolados das folhas de Styrax camporum Pohl (Styracaceace)

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Avaliação do potencial biocatalítico de fungos endófitos de espécies vegetais do Cerrado

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)