|
|
|
|
|
| Aidar,Marcos P.M.; Joly,Carlos A.. |
| O estudo foi realizado em um fragmento de mata ciliar (42 ha) onde a espécie arbórea, secundária inicial e decídua Centrolobium tomentosum Guill. ex Benth. é dominante no estrato superior da floresta estacional semidecidual. A espécie apresentou grande produção de serapilheira (4,2 kg.ind-1) com um comportamento bimodal de deposição (janeiro/fevereiro _ 25,1% e julho/agosto _ 52,3%), e grande capacidade de transferência de nutrientes para o solo (g.ind-1.ano-1): 74,7 N; 6,1 P; 29,0 K; 73,9 Ca; 25,8 Mg e 14,1 S. A decomposição da fração foliar da serapilheira apresentou padrão sazonal, resultando em cerca de 19,5 meses para seu desaparecimento. A qualidade e quantidade da serapilheira produzida por C. tomentosum indicam um alto potencial de utilização dessa... |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Bacia do rio Jacaré-Pepira; Centrolobium tomentosum; Floresta estacional semidecidual; Produção de serapilheira; Transferência de nutrientes. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042003000200007 |
| |
|
|
| Buckeridge,Marcos S.; Aidar,Marcos P.M.. |
| As carbon dioxide increases on Earth atmosphere, the rise in average temperatures may provoke changes in the environment that could damage civilisation as we know it. As a result, the need to sequester carbon becomes urgent, and one of the options we have is to use the potential of the forests to do it by enhancing assimilation of CO2 through photosynthesis. However, if we consider the use of plants to increase carbon sequestration, a problem that looms is that species often acclimate and actually reduce CO2 assimilation through feedback mechanisms of the sugars that are the product. In the present article, we propose that some biochemical pathways, such as those in control of photosynthesis, carbohydrate metabolism and assimilation, and cellulose and... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Global change; Carbon Sequestration; Photosynthesis; Rain Forest; Sugar Sensing; Cellulose synthesis; Gene therapy. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032002000100002 |
| |
|
|
| Aidar,Marcos P.M.; Carrenho,Rosilaine; Joly,Carlos A.. |
| Mycorrhizal colonization was assessed in roots of trees within an Atlantic Forest chronosequence, located in the southeastern of São Paulo State, Brazil, inside Tourist State Park of the High Ribeira Valley (PETAR). The phytosociological survey was carried out in three adjacent areas, all on calcareous soil, which correspond to different time intervals during which they have been left abandoned following a slash-and-burn agricultural perturbation. Early Phase (EP) with 15 years; Mid Phase (MP) with 25 years; and Late Phase (LP) with more than 36 years without clear-cut. The inventory indicated a continuum of tree species substitution, which is dominated by species of Leguminosae, especially Piptadenia gonoacantha (Mart.) J.F. Macbr. (Mimosoideae) in the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Secondary succession; Atlantic Forest; Tropical calcareous soil; Arbuscular mycorrhizal fungi (AMF); Piptadenia gonoacantha. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032004000200005 |
| |
|
|
|
