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Mostrando ítems 31-40 de 206
Os Lagos do entorno da cidade de Boa Vista - Roraima: aspectos fisiográficos, granulométricos, mineralógicos e químicos dos sedimentos e físicoquímico das águas
(Universidade Federal do ParáBrasilInstituto de GeociênciasUFPAPrograma de Pós-Graduação em Geologia e Geoquímica, 2019)
The effect of pH on phosphorus sorbed from sediments in a river with a natural pH gradient
(Pergamon-Elsevier Science Ltd, 2019-08)
Phosphorus (P) is an essential nutrient for algal growth and its increase in water bodies produces eutrophication. On the other hand, sediments play an essential role in the processes of transformation and accumulation of ...
Brazilian research on extremophiles in the context of astrobiology
(CAMBRIDGE UNIV PRESSNEW YORK, 2012)
Extremophiles are organisms adapted to grow at extreme ranges of environmental variables, such as high or low temperatures, acid or alkaline medium, high salt concentration, high pressures and so forth. Most extremophiles ...
Potential re-colonisation by cladocerans of an acidic tropical pond
(2011)
To predict how re-colonisation of acidified lakes will proceed, at least two approaches are possible: (i) to compare the life history traits of candidate species and determine which one has the highest fitness, and (ii) ...
Análisis de la importancia del carbono orgánico disuelto en lagos andinos tropicales
(Universidad Pedagógica y Tecnológica de ColombiaFacultad CienciasTunjaMaestría en Ciencias Biológicas, 2021)
Spa: El presente trabajo plantea la conceptualización e implementación de la calidad del agua superficial que permitirá simular la variación temporal de especies de carbono orgánico (como fitoplancton), carbono inorgánico, ...
Comparative chemical analysis of the rind and pith of totora (Schoenoplectus californicus) stems
(2018)
Totora (Schoenoplectus californicus (C.A. Mey.) Soják) is a sedge that grows
in lakes and marshes in America and some of the Pacific Islands. The
hypothesis tested was that the rind and pith of totora stems have ...
Sequential Chemical Extraction for a Phosphogypsum Environmental Impact Evaluation.
(AIP Publishing LLCNew York, 2013-05-06)
Phosphogypsum (PG) is gypsum generated during phosphoric acid production. PG is stocked in large stacks or accumulated in lakes; it contains heavy metals and naturally occurring radioactive elements. The metal contamination ...
Impacts of climate change on the aquatic flora of Lagunas Verdes, Chiles Volcano, EcuadorImpactos del cambio climático sobre la flora acuática de las Lagunas Verdes, volcán Chiles, Ecuador
(Instituto de Investigación de Recursos Biológicos Alexander Von Humboldt, 2019)