| |
|
|
 | Acceso al texto completo restringido a Biblioteca INIA La Estanzuela. Por información adicional contacte bib_le@inia.org.uy. |
|
Registro completo
|
|
Biblioteca (s) : |
INIA La Estanzuela. |
|
Fecha : |
18/12/2020 |
|
Actualizado : |
21/05/2021 |
|
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
|
Autor : |
BERETTA-BLANCO, A.; CARRASCO-LETELIER, L. |
|
Afiliación : |
ANDRÉS BERETTA-BLANCO, Dirección General de Recursos Naturales, Ministerio de Ganadería Agricultura y Pesca, Uruguay.; LEONIDAS CARRASCO-LETELIER, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
|
Título : |
Relevant factors in the eutrophication of the Uruguay River and the Río Negro. |
|
Fecha de publicación : |
2021 |
|
Fuente / Imprenta : |
Science of the Total Environment, Volume 761, 20 March 2021, Article number 143299. Doi: https://doi.org/10.1016/j.scitotenv.2020.143299 |
|
DOI : |
10.1016/j.scitotenv.2020.143299 |
|
Idioma : |
Inglés |
|
Notas : |
Article history: Article history:Received 10 April 2020/Received in revised form 9 October 2020/Accepted 25 October 2020/Available online 14 November 2020. Corresponding author:E-mail address: lcarrasco@inia.org.uy (L. Carrasco-Letelier). |
|
Contenido : |
Abstract: In recent decades, there has been increasing eutrophication of rivers and lagoons in Uruguay and solutions leading to water purification are being sought. The growing pollution has been attributed to nitrogen and phosphorus compounds exported from the river basins with intensification of agricultural production and the absence of tertiary treatment for urban and industrial effluents. Although nitrogen and phosphorus are relevant to eutrophication, there are also other factors that can promote eutrophication and algal blooms. This paper reports a broad analysis of water quality variables recorded over 9 years (2009?2018) at 17 sampling stations on the Uruguay River and 16 sampling stations on the Río Negro, and explores their relationship with the changes of chlorophyll a (Chl-a) concentrations using a generalized linear model and a neural network simulation (NNS). The input variables were total phosphorus; total suspended solids; electrical conductivity of water (ECw); alkalinity; water temperature (T); water pH (pH) and sampling month. The NNS explained 79% of Chl-a variations and showed
the most relevant variables to be T, ECw, and pH. Moreover, the NNS showed that replacement of current land uses by natural prairie would not significantly reduce Chl-a concentrations. The results showed that the main factors that drive Chl-a concentrations (i.e., algae) are not directly linked to agriculture land use. |
|
Palabras claves : |
CHL-A; EUTROPHICATION; FRESHWATER; NEURAL NETWORK SIMULATIONS. |
|
Asunto categoría : |
-- |
|
Marc : |
LEADER 02373naa a2200205 a 4500
001 1061591
005 2021-05-21
008 2021 bl uuuu u00u1 u #d
024 7 $a10.1016/j.scitotenv.2020.143299$2DOI
100 1 $aBERETTA-BLANCO, A.
245 $aRelevant factors in the eutrophication of the Uruguay River and the Río Negro.$h[electronic resource]
260 $c2021
500 $aArticle history: Article history:Received 10 April 2020/Received in revised form 9 October 2020/Accepted 25 October 2020/Available online 14 November 2020. Corresponding author:E-mail address: lcarrasco@inia.org.uy (L. Carrasco-Letelier).
520 $aAbstract: In recent decades, there has been increasing eutrophication of rivers and lagoons in Uruguay and solutions leading to water purification are being sought. The growing pollution has been attributed to nitrogen and phosphorus compounds exported from the river basins with intensification of agricultural production and the absence of tertiary treatment for urban and industrial effluents. Although nitrogen and phosphorus are relevant to eutrophication, there are also other factors that can promote eutrophication and algal blooms. This paper reports a broad analysis of water quality variables recorded over 9 years (2009?2018) at 17 sampling stations on the Uruguay River and 16 sampling stations on the Río Negro, and explores their relationship with the changes of chlorophyll a (Chl-a) concentrations using a generalized linear model and a neural network simulation (NNS). The input variables were total phosphorus; total suspended solids; electrical conductivity of water (ECw); alkalinity; water temperature (T); water pH (pH) and sampling month. The NNS explained 79% of Chl-a variations and showed the most relevant variables to be T, ECw, and pH. Moreover, the NNS showed that replacement of current land uses by natural prairie would not significantly reduce Chl-a concentrations. The results showed that the main factors that drive Chl-a concentrations (i.e., algae) are not directly linked to agriculture land use.
653 $aCHL-A
653 $aEUTROPHICATION
653 $aFRESHWATER
653 $aNEURAL NETWORK SIMULATIONS
700 1 $aCARRASCO-LETELIER, L.
773 $tScience of the Total Environment, Volume 761, 20 March 2021, Article number 143299. Doi: https://doi.org/10.1016/j.scitotenv.2020.143299
Descargar
Esconder MarcPresentar Marc Completo |
|
Registro original : |
INIA La Estanzuela (LE) |
|
|
Biblioteca
|
Identificación
|
Origen
|
Tipo / Formato
|
Clasificación
|
Cutter
|
Registro
|
Volumen
|
Estado
|
Volver
|
|
|
| Registros recuperados : 3 | |
| 1. |  | SILVA, L. C. A. DA; PESSOA, D. A. DO N.; LOPES, J. R. G.; SANTOS, J. R. S. DOS; OLINA, R. G.; RIET-CORREA, F. Embryonic death and abortion in goats caused by ingestión of Amorimia septentrionalis. [Mortalidade embrionária e abortos em cabras causados pela ingestão de Amorimia septentrionalis.] Pesquisa Veterinaria Brasileira, 1 December 2017, Volume 37, Issue 12, Pages 1401-1404. OPEN ACCESS.| Tipo: Artículos en Revistas Indexadas Internacionales | Circulación / Nivel : Internacional - -- |
| Biblioteca(s): INIA La Estanzuela. |
|    |
| 2. | | DOS SANTOS, J.R.S.; LOPES, J.R.G; MEDEIROS, M.A.; CAMPPOS, É.M.; MEDEIROS, R.M.T.; RIET-CORREA, F. Mortalidade embrionária e aborto em caprinos causados pela ingestão de Poincianella pyramidalis. [Embryonic mortality and abortion in goats caused by ingestion of Poincianella pyramidalis]. Pesquisa Veterinária Brasileira v.38 ,n.7. p. 1259-1263, July 2018. OPEN ACCESS. Article history: Received on July 4, 2017 // Accepted for publication on July 5, 2017.| Tipo: Artículos en Revistas Indexadas Internacionales | Circulación / Nivel : Internacional - -- |
| Biblioteca(s): INIA La Estanzuela. |
| |
| Registros recuperados : 3 | |
|
| Expresión de búsqueda válido. Check! |
|
|
