RESUMO
Biolog's identification system was used to identify 39 American Type Culture Collection reference taxa and 45 gram-negative isolates from water samples. Of the reference strains, 98% were identified to genus level and 76% to species level within 4 to 24 h. Identification of some authentic strains of Enterobacter, Klebsiella, and Serratia was unreliable. A total of 93% of the water isolates were identified.
Assuntos
Técnicas de Tipagem Bacteriana/instrumentação , Técnicas de Tipagem Bacteriana/estatística & dados numéricos , Bactérias Aeróbias Gram-Negativas/classificação , Microbiologia da Água , Abastecimento de Água/análise , Bases de Dados Factuais , Estudos de Avaliação como Assunto , Bactérias Aeróbias Gram-Negativas/isolamento & purificação , Voo Espacial/instrumentação , Gerenciamento de Resíduos/instrumentação , Gerenciamento de Resíduos/métodosRESUMO
Materially closed microbial ecosystems represent model life support systems for the future human habitation of space. These ecosystems when subjected to a constant energy flux seem to be reliable and self-sufficient systems for recycling of biologically produced carbon compounds.
Assuntos
Carbono/metabolismo , Sistemas Ecológicos Fechados/instrumentação , Sistemas de Manutenção da Vida/instrumentação , Bactérias/crescimento & desenvolvimento , Eucariotos/crescimento & desenvolvimentoRESUMO
The eukaryote/prokaryote ratio permits immediate and direct estimation of ecological stability in closed microbial ecosystems as well as in natural systems. Previous research demonstrated partial pressure of oxygen can be used as a long term indicator of stability (Kearns and Folsome , 1981). The eukaryote/prokaryote ratio correlates with oxygen measurements and is another useful determinant in the studies of closed ecological systems. In the future this ratio may find widespread application since it is based on reliable internal properties of the system.