Potencial de acumulação de fitomassa e composição bromatológica da Jurema Preta (Mimosa tenuiflora (Willd.) Poiret.) na região semi-árida da Paraíba

• Autor(a) principal: Bakke, Ivonete Alves
• Data de Publicação: 2005
• Tipo de documento: Tese
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da UFPB
• Texto Completo: https://repositorio.ufpb.br/jspui/handle/tede/8108
• topic: Forragem arbórea; Tree fodder; Energia; Taninos; Benefício ecológico; Caatinga; Energy; Tannins; Ecological benefit; CIENCIAS AGRARIAS::AGRONOMIA

The characteristics of the semi-arid region of northeast Brazil lead to the development of a forest formation known as Caatinga, composed mostly by xerophytes. The Caatinga forest is fundamental to the economic activities of the semi-arid region of northeastern Brazil. However, very often, these activities put the ecosystem integrity at risk. Among the most frequent tree species, jurema preta (Mimosa tenuiflora (Willd) Poiret) stands out for its potential for forage production, especially in the dry period of the year, when fodder shortage is in its peak. Its stems may be used for fence construction, or as high caloric power firewood for bakeries and ceramic industries. Its bark can be used as a source of tannins for fur treatment. Bark extraction also brings the extra benefit of reducing the attack of wood-eating fungi and insects and increasing the energetic quality of its firewood. There are many ecological benefits of this species for the semi-arid region. First it plays an important role in the initial phase of recovery of degraded areas, in preparing the environment for the secondary species of the later stages of plant and animal succession in the Caatinga forest. In addition, it helps to protect the soil and produce food for the native fauna. Jurema preta shows a high efficiency in N fixation and nutrient uptake, as it is able to successfully associate to rizobium bacteria and mycorrizal fungi. Due to the described importance of this species for the semi-arid region of northeastern Brazil, studies were conducted to evaluate its growth rate, forage production and natural regeneration in the semi-arid region of Paraiba. These points are presented in the following chapters.