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The concentration of chlorine in water declines as it reacts with various substances, causing decay of the residual free chlorine until its total consumption. In light of the typical characteristics of the water from protected dug wells and tube wells, this study aimed to evaluate the decay kinetics of free chlorine in the water of alternative individual supply (AIS) solutions used in the city of Porto Velho in the Brazilian Amazon region. The free chlorine decay constant in the water was evaluated by “bottle tests,” applying a first-order model. According to the results, the type of well and initial chlorine concentration significantly influences the free chlorine decay speed. The water samples from the tubular wells had lower chlorine demand levels, attributed to their better water quality. The simulation of the residual chlorine decay in the different supply sources is an important tool to support safe disinfection processes.
Taise Vargas; Célia Baía; Tatiana Machado; Caetano Dórea; Wanderley Bastos. Decay of Free Residual Chlorine in Wells Water of Northern Brazil. Water 2021, 13, 992 .
AMA StyleTaise Vargas, Célia Baía, Tatiana Machado, Caetano Dórea, Wanderley Bastos. Decay of Free Residual Chlorine in Wells Water of Northern Brazil. Water. 2021; 13 (7):992.
Chicago/Turabian StyleTaise Vargas; Célia Baía; Tatiana Machado; Caetano Dórea; Wanderley Bastos. 2021. "Decay of Free Residual Chlorine in Wells Water of Northern Brazil." Water 13, no. 7: 992.
We present a preliminary list of the avifauna found at the Estação Ecológica do Cuniã (ESEC Cuniã) in Porto Velho, northern Rondônia, Brazil. This inventory is based on systematic records obtained by mist-netting and camera trapping and non-systematic visual and audio records collected within the study area in 2017 and 2019. The combined dataset includes 135 bird species representing 37 families. Among these species are endemic birds and migratory birds. Four of the species are described in the last decade, and the records represent expansions of these species’ known ranges to the state of Rondônia. Overall, the data show that the ESEC Cuniã has a considerable diversity of bird species and is important for the conservation of the fauna of the floodplains of the Amazon basin.
Tatiana Lemos Da Silva Machado; Uéslei Marques de Oliveira; Sheiliane Santos Do Nascimento; Marcos Pérsio Dantas Santos; Angelo Gilberto Manzatto. Preliminary survey of avifauna of the Estação Ecológica do Cuniã in Porto Velho, northern Brazil. Check List 2021, 17, 289 -310.
AMA StyleTatiana Lemos Da Silva Machado, Uéslei Marques de Oliveira, Sheiliane Santos Do Nascimento, Marcos Pérsio Dantas Santos, Angelo Gilberto Manzatto. Preliminary survey of avifauna of the Estação Ecológica do Cuniã in Porto Velho, northern Brazil. Check List. 2021; 17 (1):289-310.
Chicago/Turabian StyleTatiana Lemos Da Silva Machado; Uéslei Marques de Oliveira; Sheiliane Santos Do Nascimento; Marcos Pérsio Dantas Santos; Angelo Gilberto Manzatto. 2021. "Preliminary survey of avifauna of the Estação Ecológica do Cuniã in Porto Velho, northern Brazil." Check List 17, no. 1: 289-310.
South-west Amazonia is one of the world's biologically richest regions in terms of birds, with more than 500 species at some localities (e.g. Terborgh et al. 1984, Parker et al. 1994, Brown & Freitas 2002, Whittaker et al. 2002). The avifauna of the Brazilian state of Acre, which borders Peru, Bolivia and the Brazilian states of Rondônia and Amazonas, is well known, with more than 700 species documented (Guilherme 2016). In addition to species richness, the region is also characterised by high endemism, with many species unique to the Inambari centre of endemism between the Solimões and Madeira Rivers (Haffer 1978, Cracraft 1985, Silva et al. 2019). In Acre, at least 23 species are confined to the Inambari centre, and 12 of these occur in Brazil only in Acre and adjacent parts of Amazonas (Guilherme 2012, 2016). Furthermore, some species are restricted to eastern Acre, including many bamboo specialists (Guilherme & Santos 2009, Guilherme 2012, 2016).
Diego Pedroza; Tomaz Nascimento De Melo; Tatiana Lemos Da Silva Machado; David Pedroza Guimarães; Jônatas M. Lima; Edson Guilherme. Birds of Humaitá Forest Reserve, Acre, Brazil: an important forest fragment in south-west Amazonia. Bulletin of the British Ornithologists’ Club 2020, 140, 58 -79.
AMA StyleDiego Pedroza, Tomaz Nascimento De Melo, Tatiana Lemos Da Silva Machado, David Pedroza Guimarães, Jônatas M. Lima, Edson Guilherme. Birds of Humaitá Forest Reserve, Acre, Brazil: an important forest fragment in south-west Amazonia. Bulletin of the British Ornithologists’ Club. 2020; 140 (1):58-79.
Chicago/Turabian StyleDiego Pedroza; Tomaz Nascimento De Melo; Tatiana Lemos Da Silva Machado; David Pedroza Guimarães; Jônatas M. Lima; Edson Guilherme. 2020. "Birds of Humaitá Forest Reserve, Acre, Brazil: an important forest fragment in south-west Amazonia." Bulletin of the British Ornithologists’ Club 140, no. 1: 58-79.