IMPACT OF A BENZOYL UREA INSECTICIDE ON AQUATIC MACROINVERTEBRATES IN DITCH MESOCOSMS WITH AND WITHOUT NON-SPRAYED SECTIONS

2009 ◽  
Vol 28 (10) ◽  
pp. 2191 ◽  
Author(s):  
Theo C.M. Brock ◽  
Ivo Roessink ◽  
J. Dick M. Belgers ◽  
Fred Bransen ◽  
Steve J. Maund
Keyword(s):  
Aquatic Macroinvertebrates ◽  
Benzoyl Urea

scholarly journals Alien aquatic macroinvertebrates along the lateral dimension of a large floodplain

2009 ◽  
Vol 12 (7) ◽  
pp. 2219-2231 ◽  
Author(s):  
Anne-Laure Besacier-Monbertrand ◽  
Amael Paillex ◽  
Emmanuel Castella
Keyword(s):  
Aquatic Macroinvertebrates ◽  
Lateral Dimension

scholarly journals Aquatic macroinvertebrates in Uruguayan rice agroecosystem

2021 ◽  
Vol 9 ◽  
Author(s):  
Leticia Bao ◽  
Sebastián Martínez ◽  
Mónica Cadenazzi ◽  
Mónica Urrutia ◽  
Lucía Seijas ◽  
...  
Keyword(s):  
Costa Rica ◽  
Paddy Field ◽  
Grain Filling ◽  
Diversity Indices ◽  
Water Sources ◽  
Control Area ◽  
Aquatic Macroinvertebrates ◽  
Quality Of Water ◽  
Grain Filling Stage

This work is a first approach to the knowledge of insects and other aquatic macroinvertebrates of rice agroecosystems from eastern Uruguay. The composition of the groups collected may represent an approximation to the knowledge of the quality of water sources associated with Uruguayan rice production. Sampling of aquatic macroinvertebrates was carried out during the grain-filling stage in crops without insecticide use, in three localities of Treinta y Tres Department. In each crop, macroinvertebrates were collected with a Surber-type network at the inlet and outlet of water to and from the paddy field and a neighbouring control area. Differences in morphospecies composition were found according to the location and source of water. Insecta was the most represented class in macroinvertebrate samplings (41.5%). Diptera (59.9%), Hemiptera (16.3%) and Ephemeroptera (14.0%) were the most abundant orders within insects. The Richness and Shannon Diversity Indices were higher than those recorded for similar studies in Costa Rica, Italy and Australia.

scholarly journals Aquatic Macroinvertebrate Assemblages in Rivers Under the Influence of Mining Activities

2021 ◽  
Author(s):  
Axel Eduardo Rico-Sánchez ◽  
Alexis Joseph Rodríguez-Romero ◽  
Jacinto Elías Sedeño-Díaz ◽  
Eugenia López-López ◽  
Andrea Sundermann
Keyword(s):  
Heavy Metals ◽  
Structural Changes ◽  
Cost Effective ◽  
Diversity Indices ◽  
Aquatic Macroinvertebrates ◽  
Conservation Strategies ◽  
Mining Activities ◽  
Macroinvertebrate Communities ◽  
Negative Effects ◽  
Central Plateau

Abstract Mining is one of the main pollution issues worldwide, causing the greatest disturbances to the environment. Industrial and artisanal mining activities are widespread in Mexico, being a major global producer of various metals. This study aimed to assess the ecological impairments resulting from mining activities using the aquatic macroinvertebrates assemblages (MA). A multiple co-inertia analysis (MCOA) was applied to determine the relationships between environmental factors, habitat quality, heavy metals, and aquatic macroinvertebrates in two rivers of the Central Plateau, Mexico. The results revealed three contrasting environmental conditions and different MA. High concentrations of heavy metals, nutrients, and salinity limit the presence of various families of seemingly sensitive macroinvertebrates, these factors were identified as the drivers of structural changes in the MA, showing that not only mining activities, but also agriculture, and villages in the basin, exert negative effects to the macroinvertebrate communities. Diversity indices showed that the lowest diversity matched with both, the most polluted and the most saline rivers. The rivers studied displayed a high alkalinity and hardness, which can lead to the formation of metal precipitates and thus acting as a protection to aquatic biota. Aquatic biomonitoring in rivers, impacted by mining and other human activities, is critical for detecting the effect of metals and other pollutants to improve management and conservation strategies. This study supports the design of cost-effective and accurate water quality biomonitoring protocols in developing countries.

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