Water quality and macroinvertebrate community response following pesticide applications in a banana plantation, Limon, Costa Rica

2006 ◽  
Vol 367 (1) ◽  
pp. 418-432 ◽  
Author(s):  
Luisa Eugenia Castillo ◽  
Eduardo Martínez ◽  
Clemens Ruepert ◽  
Candida Savage ◽  
Michael Gilek ◽  
...  
Keyword(s):  
Water Quality ◽  
Costa Rica ◽  
Community Response ◽  
Macroinvertebrate Community ◽  
Banana Plantation

scholarly journals Treatment of arsenic-contaminated water using in-line electrolysis, co-precipitation and filtration in Costa Rica

2017 ◽  
Vol 18 (1) ◽  
pp. 40-48 ◽  
Author(s):  
Sylvie Kunz ◽  
Luis G. Romero-Esquivel ◽  
Philipp Otter ◽  
Ulrike Feistel ◽  
Thomas Grischek ◽  
...  
Keyword(s):  
Water Quality ◽  
Costa Rica ◽  
Arsenic Removal ◽  
Water Quality Monitoring ◽  
Water Tank ◽  
Mean Values ◽  
Treated Water ◽  
Catalytically Active ◽  
Co Precipitation ◽  
Maintenance Requirements

Abstract A novel treatment was tested with groundwater to investigate its arsenic removal under natural conditions. The system utilised in-line electrochlorination to oxidise water constituents without the need for external chemical supply. The oxidised arsenic and iron co-precipitated and were filtered via Greensand Plus™. The filter was catalytically active and provided an emergency oxidant. The system had only a few maintenance requirements due to online water quality monitoring. The contaminant removal during the field test in Costa Rica was impaired by strong fluctuations in water quality including low iron concentrations. However, the system removed on average 68% of the arsenic. Mean values of arsenic were 40 ± 23 μg/L in groundwater and 13 ± 6 μg/L in treated water. Iron was removed from an average of 2.8 ± 2.4 mg/L to 0.2 ± 0.2 mg/L (93% removal). Free chlorine produced and available in the treated water tank had a mean concentration of 1.25 mg/L and 0.64 mg/L, respectively.

scholarly journals New State Records and Habitat Characteristics for Kloosia Kruseman (Diptera: Chironomidae) from Wadeable Streams in Missouri

2020 ◽  
Vol 48 (2020) ◽  
pp. 1-3
Author(s):  
William R. Mabee ◽  
Brandy S. Bergthold ◽  
Carl K. Wakefield ◽  
Matthew D. Combes
Keyword(s):  
Water Quality ◽  
Quality Characteristics ◽  
Macroinvertebrate Community ◽  
Habitat Characteristics ◽  
Aquatic Macroinvertebrate ◽  
Dekalb County ◽  
Wadeable Streams ◽  
State Records

Abstract First records of occurrence of the midge genus Kloosia Kruseman in Missouri are reported based upon aquatic macroinvertebrate community samples collected during April 2012 and October 2015 from reaches of Grindstone Creek in Dekalb County and South Blackbird Creek in Schuyler County in the Central Dissected Till Plains. Select physical and water quality characteristics from the reaches are also provided.

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