Interactions between a planktivorous fish and planktonic microcrustaceans mediated by the biomass of aquatic macrophytes

2021 ◽  
Author(s):  
Bárbara Angélio Quirino ◽  
Franco Teixeira de Mello ◽  
Sabrina Deosti ◽  
Claudia Costa Bonecker ◽  
Ana Lúcia Paz Cardozo ◽  
...  
Keyword(s):  
Aquatic Macrophyte ◽  
Plant Biomass ◽  
Flow Speed ◽  
Trophic Niche ◽  
Planktivorous Fish ◽  
Low Flow ◽  
High Biomass ◽  
Predator Prey ◽  
Cladoceran Species ◽  
Macrophyte Biomass

Abstract Habitat complexity is recognized to mediate predator–prey relationships by offering refuge or not. We investigated the availability of planktonic microcrustaceans and the diet of a planktivorous fish (Hyphessobrycon eques) at different levels (low, intermediate and high) of aquatic macrophyte biomass. Sampling was carried out in a river with low flow speed, located in a Neotropical floodplain. We collected fish and microcrustaceans in macrophyte stands with variations in biomass. There were no differences in microcrustacean density in the water among the levels of macrophyte biomass, but microcrustacean richness and diet composition of H. eques differed. Microcrustacean richness and trophic niche breadth of the planktivorous fish were higher in high biomass stands. There was high consumption of a small cladoceran species in low macrophyte biomass, which was replaced by larger species, such as copepods, in intermediate and high biomass. Thus, the selection of some species was different among the biomass levels. These results suggest that plant biomass plays an important role in the interaction between fish and microcrustaceans, and prey characteristics such as size, escape ability and energy value make them more or less subject to predation by fish according to habitat structuring.

Macrophyte biomass productivity for heavy metal adsorption

2021 ◽  
Vol 289 ◽  
pp. 112398
Author(s):  
Andrea B. Saralegui ◽  
Victoria Willson ◽  
Néstor Caracciolo ◽  
M. Natalia Piol ◽  
Susana P. Boeykens
Keyword(s):  
Heavy Metal ◽  
Biomass Productivity ◽  
Metal Adsorption ◽  
Heavy Metal Adsorption ◽  
Macrophyte Biomass

Enhanced metal removal from aqueous solution by Fenton activated macrophyte biomass

Desalination ◽  
2011 ◽  
Vol 271 (1-3) ◽  
pp. 20-28 ◽  
Author(s):  
Patricia Miretzky ◽  
Carolina Muñoz
Keyword(s):  
Aqueous Solution ◽  
Metal Removal ◽  
Macrophyte Biomass

Epiphyton dependency of macrophyte biomass in shallow reservoirs and implications for water transparency

2018 ◽  
Vol 150 ◽  
pp. 46-52 ◽  
Author(s):  
Chen Zhang ◽  
Yixuan Huang ◽  
Maria Špoljar ◽  
Wenna Zhang ◽  
Natalia Kuczyńska-Kippen
Keyword(s):  
Water Transparency ◽  
Macrophyte Biomass ◽  
Shallow Reservoirs

Fluoride removal from aqueous solution by Ca-pretreated macrophyte biomass

2008 ◽  
Vol 5 (1) ◽  
pp. 68 ◽  
Author(s):  
Patricia Miretzky ◽  
Carolina Muñoz ◽  
Alejandro Carrillo-Chávez
Keyword(s):  
Aqueous Solution ◽  
Developing Countries ◽  
Drinking Water ◽  
Sorption Capacity ◽  
Aquatic Macrophyte ◽  
Low Cost ◽  
Isotherm Models ◽  
Fluoride Removal ◽  
Natural Material ◽  
Macrophyte Biomass

Environmental context. Fluoride concentrations in drinking water above 1.5 mg L–1 may be detrimental to human health. Many methods have been developed for removing excessive fluoride from drinking water. The use of an aquatic macrophyte biomass (Eleocharis acicularis) pretreated with Ca2+, a low-cost natural material, could be a technique for rural populations in developing countries that cannot afford treated or bottled water for daily consumption. Abstract. The use of an aquatic macrophyte biomass (Eleocharis acicularis) pretreated with Ca2+ as a low-cost natural material for the removal of fluoride from aqueous solution was studied. Batch experiments were carried out to determine fluoride sorption capacity and the efficiency of the sorption process under different pH, initial F– and macrophyte biomass doses. The experimental data showed good fitting to Langmuir and Freundlich isotherm models. The maximum F adsorption capacity was 0.110 mmol g–1 with an efficiency of 64.5% (pH 6.0; 5.0 g L–1 Ca-pretreated biomass). The binding of Ca2+ to the biomass increased the removal efficiency over 100%. The F– removal kinetics were rapid, less than 30 min, and best described by the pseudo-second order rate model. The rate constant, the initial sorption rate and the equilibrium sorption capacity were determined. These results may be useful for deprived rural population water supply schemes in Mexico and in other developing countries.

Evaluation of the application of macrophyte biomass Salvinia auriculata Aublet in red ceramics

2020 ◽  
Vol 275 ◽  
pp. 111253
Author(s):  
Geovana Carla Girondi Delaqua ◽  
Markssuel Teixeira Marvila ◽  
Djalma Souza ◽  
Ruben Jesus Sanchez Rodriguez ◽  
Henry Alonso Colorado ◽  
...  
Keyword(s):  
Macrophyte Biomass ◽  
Red Ceramics

scholarly journals Interaction among bacterioplankton and macrophytes in shallow lakes with high macrophyte cover

2020 ◽  
Vol 82 (4) ◽  
Author(s):  
Nóra Szabó-Tugyi ◽  
Viktor R. Tóth
Keyword(s):  
Shallow Lakes ◽  
Bacterial Production ◽  
Heterotrophic Bacteria ◽  
Seasonal Pattern ◽  
Biomass Accumulation ◽  
Emergent Macrophytes ◽  
Macrophyte Growth ◽  
Macrophyte Biomass ◽  
The Relationship ◽  
Bacterioplankton Abundance

Abstract Growth of submerged and emergent macrophytes was studied together with heterotrophic bacterioplankton abundance and production in two Hungarian shallow lakes with dominant macrophyte covers. It was expected that bacterioplankton numbers and activity would have an effect on macrophyte biomass accumulation. Bacterial production and abundance showed a strong seasonal pattern with maximum in the warmest months (July, August). It was found that macrophyte biomass increased with heterotrophic bacterial production and abundance up to 5.6 µg C l− 1 h− 1 and 5.30*106 cells, respectively, while over that value was negatively associated with macrophyte growth. It was also shown that the relationship between heterotrophic bacteria and macrophytes also varied seasonally, showing a multifaceted relationship. It was demonstrated that macrophytes are not only the most significant carbon and energy source for the bacteria in shallow, macrophyte-dominated lakes, but are also competing organisms that could be supressed by excessive bacterial activity. These findings could help better understand the interaction between macrophytes and bacterioplankton, and assist wetland managers in quantifying what may be a primary cause of reed die-back.

Sign in / Sign up

Export Citation Format

Share Document