Dissolved Nitrogen and Phosphorus Dynamics in the Lower Portion of the Paraiba do Sul River, Campos dos Goytacazes, RJ, Brazil
The Paraíba do Sul river lower reach was monitored monthly between August 1995 and July 1996. This study was aimed at evaluating the temporal dynamics of dissolved nitrogen and phosphorus and its main controlling factors. Minimum and maximum observed values were as follows: N-NO2- - 0.08/0.51; N-NO3...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Instituto de Tecnologia do Paraná (Tecpar)
2001-12-01
|
| Series: | Brazilian Archives of Biology and Technology |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132001000400006 |
| _version_ | 1811214141736615936 |
|---|---|
| author | Mônica Aparecida Leite Silva Claudia Ferreira Calasans Alvaro Ramon Coelho Ovalle Carlos Eduardo Rezende |
| author_facet | Mônica Aparecida Leite Silva Claudia Ferreira Calasans Alvaro Ramon Coelho Ovalle Carlos Eduardo Rezende |
| author_sort | Mônica Aparecida Leite Silva |
| collection | DOAJ |
| description | The Paraíba do Sul river lower reach was monitored monthly between August 1995 and July 1996. This study was aimed at evaluating the temporal dynamics of dissolved nitrogen and phosphorus and its main controlling factors. Minimum and maximum observed values were as follows: N-NO2- - 0.08/0.51; N-NO3- - 21/57; N-NH4+ - 1.4/6.7; DON - 4.9/86.0; DIN -24.5/60.9; P-PO4(3-) - 0.43/1.66; DOP - 0.05/0.92; pH - 6.2/7.8; Dissolved Oxygen - 6.4/10.1; Conductivity - 48/74; Temperature - 20.5/31.1 (Nutrients - µM; Dissolved Oxygen - mg/l; Conductivity - µS/cm; Temperature - °C). Discharge presented a characteristic seasonal variation, showing a peak in January. Increasing P-PO4(3-), DOP, N-NH4+ and N-NO2- concentrations with increasing discharges could be associated to the partial flooding of inumerous fluvial islands and floodplains and to the agricultural practices of sugar cane crops that during the wet season could transfer nitrogen and phosphorus compounds to the fluvial channel.<br>O Rio Paraíba do Sul foi monitorado mensalmente na sua porção inferior, entre agosto de 1995 e julho de 1996, objetivando estudar a dinâmica temporal de nitrogênio e fósforo dissolvidos e avaliar seus principais fatores controladores. Os valores mínimos e máximos observados para os parâmetros analisados foram os seguintes: N-NO2- - 0,08/0,51; N-NO3- - 21/57; N-NH4+ - 1,4/6,7; Nitrogênio Orgânico Dissolvido (NOD) - 4,9/86,0; Nitrogênio Inorgânico Dissolvido (NID) - 24,5/60,9; P-PO4(3 -) - 0,43/1,66; Fósforo Orgânico Dissolvido (POD) - 0,05/0,92; pH - 6,2/7,8; Oxigênio Dissolvido - 6,4/10,1; Condutividade - 48/74; Temperatura - 20,5/31,1 (Nutrientes - µM; Oxigênio Dissolvido - mg/l; Condutividade - µS/cm; Temperatura - °C). A vazão apresentou uma variação sazonal característica, com pico de descarga em janeiro. A elevação das concentrações de P-PO4(3 -), POD, N-NH4+ e N-NO2- com o aumento da vazão pode estar associada à inundação parcial de numerosas ilhas fluviais e áreas alagáveis e às práticas agrícolas da cultura de cana-de-açúcar que durante o período de chuva pode transferir compostos de nitrogênio e fósforo para o canal fluvial. |
| first_indexed | 2024-04-12T05:58:25Z |
| format | Article |
| id | doaj.art-90b363857d7e41ca97ed3ed0cd0a7b5e |
| institution | Directory Open Access Journal |
| issn | 1516-8913 1678-4324 |
| language | English |
| last_indexed | 2024-04-12T05:58:25Z |
| publishDate | 2001-12-01 |
| publisher | Instituto de Tecnologia do Paraná (Tecpar) |
| record_format | Article |
| series | Brazilian Archives of Biology and Technology |
| spelling | doaj.art-90b363857d7e41ca97ed3ed0cd0a7b5e2022-12-22T03:45:06ZengInstituto de Tecnologia do Paraná (Tecpar)Brazilian Archives of Biology and Technology1516-89131678-43242001-12-0144436537110.1590/S1516-89132001000400006Dissolved Nitrogen and Phosphorus Dynamics in the Lower Portion of the Paraiba do Sul River, Campos dos Goytacazes, RJ, BrazilMônica Aparecida Leite SilvaClaudia Ferreira CalasansAlvaro Ramon Coelho OvalleCarlos Eduardo RezendeThe Paraíba do Sul river lower reach was monitored monthly between August 1995 and July 1996. This study was aimed at evaluating the temporal dynamics of dissolved nitrogen and phosphorus and its main controlling factors. Minimum and maximum observed values were as follows: N-NO2- - 0.08/0.51; N-NO3- - 21/57; N-NH4+ - 1.4/6.7; DON - 4.9/86.0; DIN -24.5/60.9; P-PO4(3-) - 0.43/1.66; DOP - 0.05/0.92; pH - 6.2/7.8; Dissolved Oxygen - 6.4/10.1; Conductivity - 48/74; Temperature - 20.5/31.1 (Nutrients - µM; Dissolved Oxygen - mg/l; Conductivity - µS/cm; Temperature - °C). Discharge presented a characteristic seasonal variation, showing a peak in January. Increasing P-PO4(3-), DOP, N-NH4+ and N-NO2- concentrations with increasing discharges could be associated to the partial flooding of inumerous fluvial islands and floodplains and to the agricultural practices of sugar cane crops that during the wet season could transfer nitrogen and phosphorus compounds to the fluvial channel.<br>O Rio Paraíba do Sul foi monitorado mensalmente na sua porção inferior, entre agosto de 1995 e julho de 1996, objetivando estudar a dinâmica temporal de nitrogênio e fósforo dissolvidos e avaliar seus principais fatores controladores. Os valores mínimos e máximos observados para os parâmetros analisados foram os seguintes: N-NO2- - 0,08/0,51; N-NO3- - 21/57; N-NH4+ - 1,4/6,7; Nitrogênio Orgânico Dissolvido (NOD) - 4,9/86,0; Nitrogênio Inorgânico Dissolvido (NID) - 24,5/60,9; P-PO4(3 -) - 0,43/1,66; Fósforo Orgânico Dissolvido (POD) - 0,05/0,92; pH - 6,2/7,8; Oxigênio Dissolvido - 6,4/10,1; Condutividade - 48/74; Temperatura - 20,5/31,1 (Nutrientes - µM; Oxigênio Dissolvido - mg/l; Condutividade - µS/cm; Temperatura - °C). A vazão apresentou uma variação sazonal característica, com pico de descarga em janeiro. A elevação das concentrações de P-PO4(3 -), POD, N-NH4+ e N-NO2- com o aumento da vazão pode estar associada à inundação parcial de numerosas ilhas fluviais e áreas alagáveis e às práticas agrícolas da cultura de cana-de-açúcar que durante o período de chuva pode transferir compostos de nitrogênio e fósforo para o canal fluvial.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132001000400006Dissolved nutrientsParaíba do Sul RiverTemporal dynamicsNitrogenPhosphorusDischarge |
| spellingShingle | Mônica Aparecida Leite Silva Claudia Ferreira Calasans Alvaro Ramon Coelho Ovalle Carlos Eduardo Rezende Dissolved Nitrogen and Phosphorus Dynamics in the Lower Portion of the Paraiba do Sul River, Campos dos Goytacazes, RJ, Brazil Brazilian Archives of Biology and Technology Dissolved nutrients Paraíba do Sul River Temporal dynamics Nitrogen Phosphorus Discharge |
| title | Dissolved Nitrogen and Phosphorus Dynamics in the Lower Portion of the Paraiba do Sul River, Campos dos Goytacazes, RJ, Brazil |
| title_full | Dissolved Nitrogen and Phosphorus Dynamics in the Lower Portion of the Paraiba do Sul River, Campos dos Goytacazes, RJ, Brazil |
| title_fullStr | Dissolved Nitrogen and Phosphorus Dynamics in the Lower Portion of the Paraiba do Sul River, Campos dos Goytacazes, RJ, Brazil |
| title_full_unstemmed | Dissolved Nitrogen and Phosphorus Dynamics in the Lower Portion of the Paraiba do Sul River, Campos dos Goytacazes, RJ, Brazil |
| title_short | Dissolved Nitrogen and Phosphorus Dynamics in the Lower Portion of the Paraiba do Sul River, Campos dos Goytacazes, RJ, Brazil |
| title_sort | dissolved nitrogen and phosphorus dynamics in the lower portion of the paraiba do sul river campos dos goytacazes rj brazil |
| topic | Dissolved nutrients Paraíba do Sul River Temporal dynamics Nitrogen Phosphorus Discharge |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132001000400006 |
| work_keys_str_mv | AT monicaaparecidaleitesilva dissolvednitrogenandphosphorusdynamicsinthelowerportionoftheparaibadosulrivercamposdosgoytacazesrjbrazil AT claudiaferreiracalasans dissolvednitrogenandphosphorusdynamicsinthelowerportionoftheparaibadosulrivercamposdosgoytacazesrjbrazil AT alvaroramoncoelhoovalle dissolvednitrogenandphosphorusdynamicsinthelowerportionoftheparaibadosulrivercamposdosgoytacazesrjbrazil AT carloseduardorezende dissolvednitrogenandphosphorusdynamicsinthelowerportionoftheparaibadosulrivercamposdosgoytacazesrjbrazil |