scholarly journals Vital Diplomacy. The Ritual Everyday on a Dammed River in Amazonia, de Chloe Nahum-Claudel

2021 ◽  
Vol 16 (01) ◽  
Author(s):  
Juan Javier Rivera Andía
Keyword(s):  
Dammed River

scholarly journals Daily and seasonal variability of CO2 saturation and evasion in a free flowing and in a dammed river reach

2014 ◽  
Vol 73 (3) ◽  
Author(s):  
Monica Pinardi ◽  
Marisa Rossetto ◽  
Pierluigi Viaroli ◽  
Marco Bartoli
Keyword(s):  
Seasonal Variability ◽  
River Reach ◽  
Dammed River

scholarly journals Tributaries as richness source for Oligochaeta assemblage (Annelida) of Neotropical dammed river

2014 ◽  
Vol 74 (4) ◽  
pp. 861-869 ◽  
Author(s):  
FH Ragonha ◽  
DK Petsch ◽  
GHZ Alves ◽  
HS Santana ◽  
TS Michelan ◽  
...  
Keyword(s):  
Abundant Species ◽  
Benthic Invertebrate ◽  
Main Channel ◽  
Paraná River ◽  
Good Tool ◽  
Parana River ◽  
Main River ◽  
The Difference ◽  
Invertebrate Assemblage ◽  
Dammed River

Tributaries may serve as richness source for the river main channel and the zoobenthos community is a good tool to verify this kind of pattern. In this study, we aimed to characterize the benthic invertebrate assemblage in three tributaries associated to the Paraná River main channel, focusing in Oligochaeta community. We hypothesized that (i) in tributaries, Oligochaeta are richer than the main river (Paraná River) and (ii) dammed tributary (Paranapanema River) is poorly diverse than the others. Samples were conducted in Paranapanema, Baía and Ivinhema tributaries using a modified Petersen grab along three transects (samples conducted inside the tributary, in the mouth of each tributary and inside Paraná River). To analyze (i) the difference between the richness and density among the tributaries and the Paraná River and (ii) effect of each tributary transect on the Oligochaeta richness we used a nonparametric Kruskal-Wallis test. Changes in environmental variables and in richness and composition of Oligochaeta were summarized by Canonic Correspondence Analysis. It was registered 21 different benthic invertebrates taxa, being Oligochaeta assemblage with the highest density. Within Oligochaeta, Narapa bonettoi was the most abundant species, followed by Haplotaxis aedochaeta and Paranadrilus descolei. In our results we refused both hypotheses, because we did not found significant differences for richness and density between the tributaries and the main river, and also no difference between the three transects of each tributary were found. However, the tributaries less influenced by damming, especially the Baía recorded high richness. This corroborates their importance to diversity in the floodplain and the species of Oligochaeta reflect the peculiar characteristics of habitats within each tributaries.

Zooplankton diversity in a dammed river basin is maintained by preserved tributaries in a tropical floodplain

2015 ◽  
Vol 49 (2) ◽  
pp. 175-187 ◽  
Author(s):  
Louizi S. M. Braghin ◽  
Bruno R. S. Figueiredo ◽  
Thamis Meurer ◽  
Thaisa S. Michelan ◽  
Nadson R. Simões ◽  
...  
Keyword(s):  
River Basin ◽  
Tropical Floodplain ◽  
Dammed River

Feeding the hungry river: Fluvial morphodynamics and the entrainment of artificially inserted sediment at the dammed river Isar, Eastern Alps, Germany

Geomorphology ◽  
2017 ◽  
Vol 291 ◽  
pp. 128-142 ◽  
Author(s):  
Tobias Heckmann ◽  
Florian Haas ◽  
Judith Abel ◽  
Andreas Rimböck ◽  
Michael Becht
Keyword(s):  
Eastern Alps ◽  
Dammed River

scholarly journals The importance of free stretches in a dammed river to the maintenance of Schizodon intermedius populations

2019 ◽  
Vol 45 (1) ◽  
pp. 403 ◽  
Author(s):  
André Batista Nobile ◽  
Felipe Pontieri Lima ◽  
Diogo Freitas-Souza ◽  
Jaciara Vanessa Kruger Paes ◽  
Sandro Geraldo de Castro Britto ◽  
...  
Keyword(s):  
Dammed River

Pelagic-benthic coupling of the microbial food web modifies nutrient cycles along a cascade-dammed river

2021 ◽  
Vol 16 (4) ◽  
Author(s):  
Nan Yang ◽  
Linqiong Wang ◽  
Li Lin ◽  
Yi Li ◽  
Wenlong Zhang ◽  
...  
Keyword(s):  
Food Web ◽  
Microbial Food Web ◽  
Nutrient Cycles ◽  
Dammed River ◽  
Benthic Coupling

scholarly journals Rivers affect the biovolume and functional traits of phytoplankton in floodplain lakes

2017 ◽  
Vol 29 (0) ◽  
Author(s):  
Alfonso Pineda ◽  
Geovani Arnhold Moresco ◽  
Aline Caroline Magro de Paula ◽  
Luciane Maria Nogueira ◽  
Patricia Iatskiu ◽  
...  
Keyword(s):  
Functional Groups ◽  
Functional Traits ◽  
Primary Productivity ◽  
Temporal Distribution ◽  
Paraná River ◽  
Floodplain Lakes ◽  
Phytoplankton Species ◽  
Parana River ◽  
Total Phytoplankton ◽  
Dammed River

Abstract Aim: We analyzed the temporal distribution (dry and rainy periods) of phytoplankton functional groups (biovolume) from lakes connected to dammed (S1 - Paraná River) and non-dammed rivers (S2 - Baia River and S3 - Ivinhema River) in the upper Paraná River floodplain, Brazil. We also determined the drivers of the phytoplankton community assemblage. Methods Phytoplankton and environmental variables samplings were performed quarterly in dry (2000 and 2001) and rainy (2010 and 2011) periods. We classified the phytoplankton species into seven morphological based functional groups (MBFG). We used analysis of variance to test differences in total phytoplankton biovolume and MBFGs biovolume between lakes and climatic periods. We also used redundancy analysis to determine the MBFGs-environment relation. Results The lake related to the dammed river (S1) presented the lowest species richness. The total phytoplankton biovolume presented differences among the lakes, but we did not register temporal differences associated with water level variation. The lake related to the non-dammed and semi-lentic river (S2) presented the highest biovolume, while S1 (related to the dammed river) and S3 (related to the non-dammed river) exhibited the lowest ones. Filamentous organisms (MBFG III) were associated with poor nutrient conditions and diatoms (MBFG VI) were favored in high water mixing sites. The flagellate groups MBFG II and MBFG V were related to deeper water and lower column mixing conditions, respectively. Conclusions Our results suggest that phytoplankton species with different functional traits drive the primary productivity in the dry and rainy periods. Hence, we highlight the importance of maintaining high functional diversity in lakes to ensure primary productivity. Therefore, we stress the importance of protecting the natural environment such as floodplain lakes because of its contribution to the regional biodiversity and the flow of energy.

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