The river flood pulse, benthic biofilm, and the nutrition of Prochilodus lineatus

2022 ◽  
Author(s):  
Stephen H. Bowen
Keyword(s):  
Flood Pulse ◽  
Prochilodus Lineatus ◽  
River Flood

scholarly journals Association between annual river flood pulse and paediatric hospital admissions in the Mekong Delta area

2014 ◽  
Vol 135 ◽  
pp. 212-220 ◽  
Author(s):  
Dung Phung ◽  
Cunrui Huang ◽  
Shannon Rutherford ◽  
Cordia Chu ◽  
Xiaoming Wang ◽  
...  
Keyword(s):  
Hospital Admissions ◽  
Mekong Delta ◽  
Flood Pulse ◽  
Delta Area ◽  
Paediatric Hospital ◽  
River Flood

scholarly journals Population dynamics of the migratory fish Prochilodus lineatus in a neotropical river: the relationships with river discharge, flood pulse, El Niño and fluvial megafan behaviour

2010 ◽  
Vol 8 (1) ◽  
pp. 113-122 ◽  
Author(s):  
Marinke J. M. Stassen ◽  
Max W. P. M. van de Ven ◽  
Tjisse van der Heide ◽  
Marco Antonio Guerrero Hiza ◽  
Gerard van der Velde ◽  
...  
Keyword(s):  
El Niño ◽  
El Nino ◽  
Flood Plain ◽  
Flood Pulse ◽  
Relative Importance ◽  
Migratory Fish ◽  
Prochilodus Lineatus ◽  
El Niño Event ◽  
Main River ◽  
Sedimentation Processes

The relative importance of flood pulse dynamics and megafan behaviour for the Sábalo (Prochilodus lineatus) catches in the neotropical Pilcomayo River is studied. The Sábalo catches can mainly be explained by decreased river discharges in the preceding years resulting in smaller inundated areas during rainy season floods and thereby in a decreased area of feeding grounds for the fishes. The decreased river discharges and the related decline of Sábalo catches in the 1990's can be linked to the 90-95 El Niño event. In 2007 the Sábalo catches were comparable to the catches before the "El Niño" event. The connectivity (continuity) between the main river and flood plain areas, which is influenced by sedimentation processes, is also of great importance and very probably plays a more important role since the late 1990's.

scholarly journals Influence of Flood Pulse on Termite Diversity (INSECTA: ISOPTERA) in the Pantanal

Sociobiology ◽  
2017 ◽  
Vol 64 (3) ◽  
pp. 310
Author(s):  
Tarik Godoy D. Plaza ◽  
Carla Galbiati
Keyword(s):  
Land Use ◽  
Explanatory Variable ◽  
Flood Pulse ◽  
Sampling Area ◽  
Termite Species ◽  
Mato Grosso ◽  
Paraguay River ◽  
River Flood ◽  
The Town ◽  
Determining Factor

This research aimed to associate termite diversity to flood pulse by Paraguay River, and with savannas and pasture areas. The study was conducted nearby the town of Cáceres, in Pantanal - Mato Grosso, on six livestock farms subject to Paraguay River flood pulse. Types of land use sampled were native savanna and cultivated pasture. Flooded and dry plots were selected, both the savanna and the pasture in each sampling area. Termite richness and abundance was analysed based on the  environments as an explanatory variable (FP – flooded pasture, DP – dry pasture, FS – flooded savanna, DS – dry savanna) through GLM; Tukey’s test was subsequently performed to determine whether land use and/or flood pulse can significantly affect the termite community. There were 37 termite species and 19 genera. Richness and abundance of termite species cannot be explain by flooding pulse, but were explained only by land use (pasture and savanna). The similarity analysis also identified that species composition was quite affected by flood in grazing areas, but this disturbance does not affect the savanna areas. In conclusion, flood pulse is not a determining factor for savannas or pasture termite richness, but change the composition of the termite fauna in the environment.

The Kansas River Flood

1904 ◽  
Vol 57 (1467supp) ◽  
pp. 23502-23503
Author(s):  
Charles Alma Byers
Keyword(s):  
River Flood ◽  
Kansas River

Acido delta-aminolevulínico dehidrasa (ALA-D) como biomarcador de exposición a plomo en peces

2008 ◽  
Author(s):  
◽  
Paula Edith Lombardi
Keyword(s):  
Cyprinus Carpio ◽  
Buenos Aires ◽  
Rio De La Plata ◽  
Río De La Plata ◽  
Prochilodus Lineatus ◽  
La Plata ◽  
Del Rio

La actividad de la enzima ácido δ-aminolevulínico dehidrasa (ALA-D) es un reconocido biomarcador específico de exposición a plomo. Debido a sus características ha sido utilizado en estudios de monitoreo ambiental para evaluar la exposición a plomo en diversos organismos, entre ellos peces. El principal objetivo del presente trabajo de tesis fue validar un método de evaluación general de riesgo ecotoxicológico por exposición a plomo en poblaciones naturales de peces. Para tal fin se seleccionaron tres especies recolectadas del río de la Plata: Prochilodus lineatus (sábalo), Leporinus obtusidens (boga) y Cyprinus carpio (carpa). Las zonas de muestreo elegidas fueron: Berazategui y Berisso ubicadas cerca de las emisiones de residuos cloacales provenientes de las ciudades de Buenos Aires y La Plata. La tercera, Atalaya, libre de emisiones cloacales, pero sujeta a emisiones diversas, todas ellas, de origen antropogénico. Los muestreos se realizaron entre junio de 2002 y mayo de 2004. En primera instancia se caracterizaron diversos parámetros de la enzima ALA-D en muestras de sangre y de tejido hepático. Los resultados obtenidos mostraron características similares en la enzima sanguínea de todas las especies estudiadas. Lo mismo se observó para la enzima hepática. La comparación entre tejidos mostró diferencias en el valor de Km, siendo menor para la enzima hepática. Posteriormente, se procedió a validar el uso de la enzima como parámetro biomarcador de exposición a plomo en estudios de campo.

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