Priority organic pollutants in soil of arboretum of the Botanical Garden of Moscow State University: Report 3. Specific features of vertical distribution pattern of organochlorine pesticide in profile of urbanozem

2015 ◽  
Vol 70 (4) ◽  
pp. 180-186 ◽  
Author(s):  
G. I. Agapkina ◽  
E. S. Brodskiy ◽  
A. A. Shelepchikov ◽  
D. B. Feshin
Keyword(s):  
Vertical Distribution ◽  
Distribution Pattern ◽  
Organochlorine Pesticide ◽  
Organic Pollutants ◽  
Botanical Garden ◽  
State University ◽  
Vertical Distribution Pattern ◽  
Moscow State University

Priority organic pollutants in soils of the arboretum in the Botanical Garden of Moscow State University

2012 ◽  
Vol 67 (4) ◽  
pp. 164-170 ◽  
Author(s):  
G. I. Agapkina ◽  
E. S. Efimenko ◽  
E. S. Brodskii ◽  
A. A. Shelepchikov ◽  
D. B. Feshin
Keyword(s):  
Organic Pollutants ◽  
Botanical Garden ◽  
State University ◽  
Moscow State University

Vertical distribution pattern of naidids in granular activated carbon filters and potential technology to control their penetration risk

2018 ◽  
Vol 18 (6) ◽  
pp. 1976-1983
Author(s):  
Xiao-Bao Nie ◽  
Yun-Zi Tang ◽  
Chang-bo Jiang ◽  
Yuan-Nan Long ◽  
Pan-Pan He ◽  
...  
Keyword(s):  
Drinking Water ◽  
Activated Carbon ◽  
Vertical Distribution ◽  
Distribution Pattern ◽  
Granular Activated Carbon ◽  
Distribution Patterns ◽  
Distribution Data ◽  
Vertical Distribution Pattern ◽  
Filter Bed ◽  
The Vertical Distribution

Abstract Aquatic worms propagated in granular activated carbon (GAC) filter has become a troublesome problem for drinking water supply. This study investigated the vertical distribution patterns of naidids in GAC filter beds and assessed the effect of an additional sand bed, located below the GAC bed, in preventing naidids from being present in effluent. The results indicated that the vertical distribution data of naidids in the GAC filter bed were well fitted by a Gaussian distribution, and the location of peak population density was mainly affected by downward flow. Backwashing experiments revealed that additional pressure air scouring shifted the distribution pattern of naidids in the GAC filter bed, resulting in a significant enhancement in naidid removal efficiency. Additionally, the addition of a sand bed exhibited pronounced interception and inactivation effects on naidids, suggesting that it may be a very promising technology for preventing naidids propagated in GAC filters from being present in the effluent.

scholarly journals MACROALGAS ADERIDAS EM RIZÓFOROS DE Rizophora mangle L. EM BOA VIAGEM-SÃO JOSÉ DE RIBAMAR-MARANHÃO

2020 ◽  
Vol 30 (2) ◽  
Author(s):  
Luina Santos Serra Freire ◽  
Luana da Silva Viana ◽  
Natália de Jesus Carneiro Silva ◽  
Khey Albert de Azevedo Fontes
Keyword(s):  
Vertical Distribution ◽  
Water Temperature ◽  
Distribution Pattern ◽  
Total Biomass ◽  
Vertical Distribution Pattern ◽  
Individual Biomass ◽  
Line Transects

Esta abordagem teve como objetivo analisar as comunidades de macroalgas aderidas em rizóforos de Rizophora mangle L. na praia de Boa Viagem, São José de Ribamar-Maranhão como parâmetro para compreender melhor os diferentes níveis de variação observados no “Bostrychietum” de diferentes áreas de manguezal nas duas baías que compõem o Golfão Maranhense. Foram traçados 12 transectos de linha de novembro de 2018 a maio de 2019. Foram analisados 108 rizóforos englobados pelos transectos ao longo das coletas. Foram registrados os valores de O2 dissolvido, temperatura da água, pH e salinidade, bem como foram considerados os valores de precipitação disponibilizados por órgão oficial. 17 taxa infragenéricos (06 Chlorophyta e 11 Rhodophyta) foram identificados. Observou-se um crescimento tanto na biomassa total quanto na biomassa das espécies ao longo das coletas. Não foi observado nenhum padrão determinante de distribuição vertical das macroalgas. Os valores de precipitação apresentaram uma correlação positiva com os valores de biomassa algácea total.  ABSTRACTThis survey aimed to assess macroalgae community attached to rhizophores of Rizophora. mangle L. in Boa Viagem beach, São José de Ribamar, Maranhão, as a parameter to a better understand of the diff erent levels of variation observed inside “Bostrychietum” from diff erent areas of mangroves in the two bays that integrate Golfão Maranhense. 12 line transects were performed from november/2018 to may/2019. 108 rhizophores selected randomly along the transects were analised. Values of dissolved O๗, water temperature, pH and salinity were registered as well as precipitation levels, provided by offi cial department, were also considered. 17 infrageneric taxa were identifi ed (06 Chlorophyta and 11 Rhodophyta). It has been observed an increase in total biomass, as well as individual biomass species along the time of sampling. Vertical distribution pattern were not observed. Precipitation levels correlated positively to total macroalgae biomass.Keywords: Algae; Mangrove; “Bostrychietum”.

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