Shallow Pond
Mostrando 1-11 de 11 artigos, teses e dissertações.
-
1. Phosphorus dynamics in a highly polluted urban drainage channel-shallow reservoir system in the Brazilian semiarid
Abstract: This paper investigates phosphorus dynamics in a highly polluted system composed of a drainage channel followed by a shallow reservoir in the city of Fortaleza, Brazilian semiarid. During the dry season, significant non-point source loads of total phosphorus originated from residences unconnected to sewers were identified along the channel, resulti
An. Acad. Bras. Ciênc.. Publicado em: 19/08/2019
-
2. Cladocera (Crustacea, Branchiopoda) of a temporary shallow pond in the Caatinga of Pernambuco, Brazil
The aim of this study was to describe the composition and structure of cladocerans of littoral areas with and without macrophytes from a temporary shallow pond in the Caatinga of Pernambuco state (Brazil). Samples were taken between June 2011 and August 2012. The sampling of cladocerans and environmental variables was performed at four fixed points, using a
Nauplius. Publicado em: 2013-06
-
3. Pós-tratamento de efluente de lagoa facultativa visando à remoção de nitrogênio amoniacal. / Post treatment of facultative pond effluent aiming removal of ammonia nitrogen.
Discute o pós-tratamento de efluente de lagoas facultativas visando à remoção de nitrogênio amoniacal. Para isso, foram utilizadas unidades terciárias em escala piloto. A escolha do tipo de unidades para o pós-tratamento do efluente levou em consideração a questão do baixo custo e simplicidade de operação. Desta forma, para o estudo, fez-se opç�
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/04/2011
-
4. Comunidade de macrÃfitas aquÃticas em uma lagoa temporÃria no semiÃrido brasileiro: variaÃÃes estruturais e coexistÃncia de espÃcies / Community of macrophytes in a temporary pond in semi-arid region: structural variations and coexistence of species
Identificar se as comunidades estÃo estruturadas de forma aleatÃria ou com base em interaÃÃes biolÃgicas trata-se de um dos aspectos mais importantes em ecologia . Neste sentido a identificaÃÃo dos eventos envolvidos em sucessÃo de espÃcies pode contribuir de forma significativa. As lagoas temporÃrias do semi-Ãrido brasileiro sÃo ambientes Ãmido
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 19/02/2010
-
5. Avaliação limnológica da lagoa central (Município de Lagoa Santa - MG): uma abordagem espacial
The concern about the decrease of ecological health of freshwater resources has been increasing dramatically in recent years. Therefore, there is a huge demand of finding new technologies aimed at the recovery and conservation of freshwater resources specially in the tropical belt. Accordingly, the application of new technologies such as GIS (Geographic Info
Publicado em: 2009
-
6. Gênese, distribuição e caracterização dos espongilitos do noroeste de Minas Gerais
This study relates to the spongillites deposits that occurs in shallow ponds on a karstic planation surface developed on rocks of the Neoproterozoic São Francisco Supergroup. Cenozoic siliciclastics sediments are related to this surface and Mesozoic Areado Group rocks occur adjacent to the deposits. Field studies associated with the analysis of multispectra
Publicado em: 2009
-
7. Evaluation of agricultural productivity and of metals concentration in grains of corn irrigated with anaerobic effluent / Avaliação de produtividade agricola e de concentrações de metais nos grãos, de cultura de milho irrigada com efluente anaerobio
This work had the objective to evaluate the impact of wastewater irrigation on the productivity of corn using effluent from an anaerobic pond, and on physico-chemical and microbiological system soil-water-plant. Using the technique of irrigation by shallow furrows, will be tested 3 treatments corresponding to fertilizer and natural water available, effluent
Publicado em: 2008
-
8. Caracterização e comportamento de uma série de lagoas de polimento tratando esgotos sanitários / Characterization and performance of a polishing pond series treating domestic wastewater
This work, conducted in Viçosa MG, presents the results of five years monitoring of a domestic wastewater treatment system including an anaerobic reactor (UASB) plus a submerged aerated biofilter (real scale), followed by a three to four shallow polishing / maturation ponds series (pilot scale, h ≤0,90 m), with operational flexibility in terms of dept
Publicado em: 2007
-
9. Nitrogen Fixation (Acetylene Reduction) by Epiphytes of Freshwater Macrophytes
The involvement of epiphytic microorganisms in nitrogen fixation was investigated in a shallow freshwater pond near Ithaca, N.Y. The acetylene reduction technique was used to follow diel and seasonal cycles of nitrogen fixation by epiphytes of Myriophyllum spicatum. Acetylene-reducing activity was maximal between noon and 6 p.m., but substantial levels of ac
-
10. Extreme clonal uniformity of Phoxinus eos/neogaeus gynogens (pisces: Cyprinidae) among variable habitats in northern Minnesota beaver ponds.
Genetic surveys of parthenogenetic vertebrate populations have demonstrated a common pattern of relatively high degrees of clonal variation and the coexistence of numerous clones. In striking contrast, the Phoxinus eos/Phoxinus neogaeus/hybrid gynogen complex of cyprinid fishes exhibits no clonal variation within a northern Minnesota drainage characterized b
-
11. Brominated Biphenyls Prime Extensive Microbial Reductive Dehalogenation of Aroclor 1260 in Housatonic River Sediment
The upper Housatonic River and Woods Pond (Lenox, Mass.), a shallow impoundment on the river, are contaminated with polychlorinated biphenyls (PCBs), the residue of partially dechlorinated Aroclor 1260. Certain PCB congeners have the ability to activate or “prime” anaerobic microorganisms in Woods Pond sediment to reductively dehalogenate the Aroclor 126
American Society for Microbiology.