859 resultados para Industrias Medidas de seguridad.
Resumo:
In the first seminar on Marine Resources of Mozambique, held in Maputo in June 1984 Stersdal defined as a general objective the management of fishery to achieve the best possible use of resources to benefit the community.
Resumo:
Biological effects of management measures introduced in the shrimp fishery from 1985 to 1990 are analysed as well as the results from simulation of different closed seasons. Observed changes in recruitment, total catch, biomass and average individual weight during 1985 to 1990 for Penaeus indicus and Hetapenaeus Monoceros are also analysed. Further studies on a stock-recruitment relationship are important due to decline of recruitment levels in this period. A three-month closed season starting in January is recommended, without increases in the monthly fishing effort. The TAC shall be fixed according to the recruitment level each year.
Resumo:
The objective of this study is to recommend management measures for the industrial shallow-water shrimp fishery in Sofala Bank after estimating the economic affects considering different alternatives and assessing the level of exploitation of this fishery. The short-term economic analysis was based on the results of the total catch and average weight of the shrimp caught obtained by a simulation model in which different combinations of exploitation patterns and levels of fishing intensity were tasted. The variable parameters used were the mash size and the duration and period of the closed season, and all the remaining parameters were fixed. Economic and production data of the main industrial shrimp fishing companies for the period 1987-90 were also used.
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2009
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2000
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1984
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2000
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Apesar da populao de insetos presentes na cultura do cupuauzeiro ser numerosa, poucas espcies so consideradas como pragas, causando dano econmico. No entanto, ainda so poucos os estudos referentes a essa rea, sendo que a expanso do cultivo dessa fruteira em plantios solteiros ou como componente de sistemas agroflorestais pode levar aos aparecimento de novas pragas. Assim, os produtores e tcnicos devem estar sempre atentos. Dentre as pragas citadas em cupuauzeiro, a broca-dos-frutos, inseto pertencente ao gnero Conotrachelus (Coleoptera, Curculionidae) a mais importante atualmente, devido aos danos causados e por estar disseminada por vrios estados da Regio Norte.
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2013
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Este Comunicado Tcnico tem o objetivo de sintetizar informaes a respeito da ocorrncia de doenas em sistemas hidropnicos e as tticas disponveis para seu controle.
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2015
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De acuerdo a la normativa de TFEs el repositorio no puede dar acceso a este trabajo. Para consultarlo pngase en contacto con el tutor del trabajo. Puede acceder al resumen del mismo pinchando en el pdf adjunto