Quality of suspended fine particulate matter in the Little Tennessee River

RESUMO:Este estudo analisa a legislação ambiental braseira, no que trata da proteção da qualidade do ar, considerando os padrões de Material Particulado, seu monitoramento e suas especificações e compara-a com a legislação norte-americana, no que esta dispõe acerca dos mesmos parâmetros. Inicialmente é realizada uma reflexão sobre a responsabilidade da geração atual para com as gerações futuras quanto à qualidade do ar atmosférico que se deixará de legado para os futuros habitantes. Além disso, salienta-se a importância dos estudos ambientais como base para análise e atualização legislativa. Foi possível concluir que a legislação norte-americana apresenta grande evolução desde seu início em 1971 e, atualmente, pode-se dizer que está à frente da legislação brasileira no que diz respeito aos parâmetros monitorados, sendo esses condizentes com os resultados de pesquisas científicas, especialmente em relação ao material particulado fino (MP2,5). ABSTRACT:This study analyzes Brazilian environmental law, for what concerns the protection of air quality, considering the standard of Particulate Matter, its monitoring and specifications and compares it to the North American law, for what concerns its provisions about the same parameters. Initially, a reflection on the responsibility of the present generation to future generations, regarding the quality of atmospheric air that will be left for future residents, is performed. Besides, the importance of environmental studies as a basis for analysis and legislative updates is also emphasized. It was possible to conclude that the North American law has evolved, since its inception in 1971 and currently one can say that it is ahead of Brazilian law for what concerns the monitored parameters, which are consistent with the results of research science, especially in relation to fine particulate matter (PM2,5).

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Comparison of the dietary habits of six species of Dinotoperla (Plecoptera : Gripopterygidae) in Victoria

Marine and Freshwater Research ◽

10.1071/mf9860121 ◽

1986 ◽

Vol 37 (2) ◽

pp. 121 ◽

Cited By ~ 6

Author(s):

C Yule

Keyword(s):

Particulate Matter ◽

Green Algae ◽

Dietary Habits ◽

Fine Particulate Matter ◽

Vascular Plant ◽

Filamentous Green Algae ◽

Fine Particulate ◽

Calorific Content ◽

Quality Diet

The dietary habits of six species of Dinotoperla were determined by field and laboratory observations, nymphal gut analysis, and examination of mouthparts. All the species (D. bassae, D. brevipennis, D. christinae, D. eucumbene, D. fontana and D. thwaitesi) could be classified as herbivore-detritivores, and in each there was a shift from a diet primarily of fine particulate matter to a more polyphagous habit with increasing nymphal size. The diets of the six species were similar, consisting of diatoms, filamentous green algae (except in D. eucumbene), fupgal hyphae, fine particulate matter and vascular plant tissue. However, differences were observed in the nutritional quality of their diets in terms of protein and calorific content. The two smallest species studied, D. brevipennis and D. eucumbene, consumed mostly fine particulate matter-the least nutritionally valuable of available food items (apart from wood, which was not eaten by Dinotoperla nymphs). D. eucumbene was also the slowest growing of the six species. The fastest-growing species, D. bassae, was also the largest, and the nymphs of this species consumed the highest-quality diet, eating large amounts of filamentous green algae and diatoms.

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