Partitioning of net primary production in Eucalyptus and Acacia stands and in mixed-species plantations: Two case-studies in contrasting tropical environments

The introduction of nitrogen fixing species (NFS) in fast-growing tree plantations is an alternative option to reduce fertilizer inputs. However, the success of mixed-species plantations depends on the balance between positive interactions among species (resulting from facilitation and/or complementarity) and the negative effects of interspecific competition.Using a carbon budget approach and coupling measurements of standing biomass, aboveground litterfall and soil CO2 efflux, we assessed the influence of replacing half of eucalypt trees by Acacia mangium on total belowground carbon flux (TBCF), net primary production (NPP) and its partitioning between above- and belowground growth at two tropical sites in Brazil (Itatinga) and in Congo (Kissoko) exhibiting contrasting climates, edaphic conditions and wood productions.Annual soil CO2 efflux (FS) was significantly lower in the acacia monocultures than in eucalypt monocultures and mixed-species stands at both sites. Annual FS was significantly lower at Itatinga compared to Kissoko for all stands while TBCF was significantly lower in the eucalypt stands only. In the eucalypt monocultures we found a significantly lower aboveground NPP (ANPP) and wood production (wood NPP) at Kissoko compared to Itatinga that was almost fully balanced by a significantly higher belowground NPP (BNPP), leading to similar NPP. Similarly, acacia monocultures exhibited significantly higher ANPP and wood NPP at Itatinga than at Kissoko. The mixed-species stands exhibited a significantly lower wood NPP and ANPP than the eucalypt monocultures at the Brazilian site while NPP of the mixture was not significantly different than the average NPP of the two monocultures. At the Congolese site, NPP of the mixture was significantly higher than the average NPP of the two monocultures. NPP was similar in the mixed-species stand and the eucalypt monoculture with a significantly lower partitioning of NPP to belowground production, leading to a one third higher wood biomass at harvest in the mixed-species stand.A positive effect of growing eucalypts with the nitrogen fixing acacia trees on stand wood production occurred at Kissoko but not at Itatinga. Mixed-species plantations with NFS can be advocated at sites where the productive gains resulting from nitrogen fixation are not compromised by other resource limitations. © 2012 Elsevier B.V.

Sustainable production of biologically active molecules of marine based origin

The marine environment offers both economic and scientific potential which are relatively untapped from a biotechnological point of view. These environments whilst harsh are ironically fragile and dependent on a harmonious life form balance. Exploitation of natural resources by exhaustive wild harvesting has obvious negative environmental consequences. From a European industry perspective marine organisms are a largely underutilised resource. This is not due to lack of interest but due to a lack of choice the industry faces for cost competitive, sustainable and environmentally conscientious product alternatives. Knowledge of the biotechnological potential of marine organisms together with the development of sustainable systems for their cultivation, processing and utilisation are essential. In 2010, the European Commission recognised this need and funded a collaborative RTD/SME project under the Framework 7-Knowledge Based Bio-Economy (KBBE) Theme 2 Programme 'Sustainable culture of marine microorganisms, algae and/or invertebrates for high value added products'. The scope of that project entitled 'Sustainable Production of Biologically Active Molecules of Marine Based Origin' (BAMMBO) is outlined. Although the Union is a global leader in many technologies, it faces increasing competition from traditional rivals and emerging economies alike and must therefore improve its innovation performance. For this reason innovation is placed at the heart of a European Horizon 2020 Strategy wherein the challenge is to connect economic performance to eco performance. This article provides a synopsis of the research activities of the BAMMBO project as they fit within the wider scope of sustainable environmentally conscientious marine resource exploitation for high-value biomolecules. © 2013 Elsevier B.V.

Alceu Amoroso Lima: matrizes e posições de um intelectual católico militante em perspectiva histórica - 1928-1946

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

Geografias do drama humano: leituras do espaço em São Bernardo, de Graciliano Ramos e Pedro Páramo, de Juan Rulfo

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Apontamentos acerca das vicissitudes da subjetividade no mito de Don Juan

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

O narrador e a construção da ficcionalidade em Juan Saer, Italo Calvino, Ubaldo Ribeiro e Bernardo Carvalho

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

A pedra e a água: uma leitura comparada de Pedro Páramo (1955), de Juan Rulfo, e Como água para chocolate (1989), de Laura Esquivel

Pós-graduação em Letras - FCLAS

Os caminhos da poesia em Juan Rámon Jiménez

Pós-graduação em Letras - FCLAS

A construção do espaço em Ópera dos Mortos, de Autran Dourado, e Pedro Páramo, de Juan Rulfo

Pós-graduação em Letras - FCLAS

O enteado, de Juan Saer: narrativa poética e romance histórico?

Em O enteado (2002), de Juan José Saer, tem-se um velho narrador que conta de forma poética a sua história, uma singular experiência de vida. Quando jovem, ele viajava como grumete num navio que costeava a Bacia do Rio da Prata, quando presenciou o ataque súbito e posterior massacre da tripulação do barco pelos índios da região. Como único sobrevivente da carnificina, é praticamente adotado pelos selvagens, passando a conviver com eles, sem saber ao certo a razão de ter sido poupado. Mas a maneira de viver daqueles índios revelou-se bem estranha, pois eram antropófagos, faziam sexo em grupo (orgias), morriam muito cedo, e a peculiar linguagem que praticavam dificultava o aprendizado da língua, e, conseqüentemente, da própria cultura. Assim, esse livro tacitamente promove um debate sobre a Conquista Hispânica da América, do ponto de vista particular de um narrador que constrói poeticamente a sua visão daquele passado, que não diz respeito a nenhum fato histórico preciso. Mas, enquanto a historicidade desse texto transparece nas suas entrelinhas, a sua imanente poesia define o seu aspecto de prosa poética, senão de narrativa poética, traços que apontam para um possível hibridismo literário nesse romance.

Fontes para pensar a trajetória de um intelectual brasileiro Alceu Amoroso Lima

O estágio da pesquisa ora em andamento tem como foco principal apresentar e discutir dois conjuntos de fontes utilizados como auxiliares no estudo, em particular, da trajetória do pensador católico brasileiro Alceu Amoroso Lima, e também dos intelectuais que faziam parte do seu grupo. Os conjuntos são: uma seleção de obras de pensadores dos séculos XVIII-XIX (Edmund Burke, Louis-Ambroise De Bonald, Joseph De Maistre e Juan Donoso Cortés); a revista A Ordem, publicação de orientação católica criada nos anos 20 e que era o principal meio de expressão da intelectualidade católica laica. Certamente, o primeiro conjunto de fontes nos fornece elementos para pensar a produção de artigos de intelectuais católicos publicados na revista A Ordem, no Brasil dos anos 1930 e 1940, e particularmente por Alceu Amoroso Lima, o intelectual líder do grupo pessoas que escreviam nessas páginas.

Geografias do drama humano: leituras do espaço em São Bernardo, de Graciliano Ramos, e Pedro Páramo, de Juan Rulfo

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Shell occupation by the South Atlantic endemic hermit crab Loxopagurus loxochelis (Moreira, 1901) (Anomura: Diogenidae)

The evaluation of population characteristics, particularly those of endemic species, aids in population preservation and management. Hermit crabs present an innate behavior of occupying shells, which tends to individual needs and limits their distribution. This study characterized the pattern of occupation of gastropod shells by the hermit Loxopagurus loxochelis in three bays of the southwestern coast of Brazil. Monthly collections were made from January/1998 to December/1999 in the bays Ubatumirim (UBM), Ubatuba (UBA) and Mar Virado (MV) with a shrimping boat. Overall, ten species of gastropod shells were occupied by L. loxochelis. The shell of Olivancillaria urceus represented 66.8% of those occupied. Morphometric relationships demonstrated a differential occupation of the more abundant shells among demographic groups, where most of the males occupied O. urceus, non-ovigerous females occupied O. urceus and Buccinanops cochlidium, and ovigerous females occupied B. cochlidium and Stramonita haemastoma. Most of the individuals occupied the more abundant shells, considered adequate for the morphology of this hermit crab species. Thus, the studied bays seem to be stable and propitious environments for population perpetuation and the settlement of new individuals.

Insight into the Effects of Fe Addition on the Local Structure and Electronic Properties of SrTiO3

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Euclides da Cunha: análise da bibliografia disponível na Biblioteca Conde de Moreira Lima

Faz um levantamento do acervo de livros, da Biblioteca Conde de Moreira Lima, das Faculdades Integradas Teresa D’Ávila de Lorena - SP. Foram excluidos da pesquisa artigos de periódicos e estudos em outros suportes.