Mitigation of lake eutrophication: Loosen nitrogen control and focus on phosphorus abatement

Wang, Haijun; Wang, Hongzhu

doi:10.1016/j.pnsc.2009.03.009

Cited by 134 publications

(61 citation statements)

References 18 publications

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“…In addition to these activities, in a lake or the arm of a lake, which is shaped like a long funnel, although the phosphorus load is small for the lake as a whole, a tributary discharging nutrients into a small area would cause an increased concentration of the element at that place. It is noteworthy that the high rates of evaporation (Table 1) and zero flow of the stream and not by concentrations of total nitrogen (WANG, WANG, 2009). …”

Section: Phosphorus Contributionmentioning

confidence: 93%

“…The availability of nutrients such as phosphorus promotes the excessive growth of aquatic plants both floating and submerged, with a consequent imbalance in the ecosystem, and progressive degeneration of the quality of lentic bodies of water (WANG;WANG, 2009). The process of eutrophication of the water in reservoirs, especially when intended for multiple-usage, has often been studied by researchers in different parts of the globe (ALEXANDRE et al, 2010;KAGALOUA;PAPASTERGIADOUB;LEONARDOSA, 2008;KARADŽI et al , The enrichment of bodies of water is associated with increased primary production and the occurrence of episodes of excessive development of algae or aquatic macrophytes, which may affect the use of the water for supply, for energy production, for recreation and for the protection of aquatic life (FERREIRA, 2004;LACERDA et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Land use and trophic state dynamics in a tropical semi-arid reservoir

Santos

Andrade²,

Neto³

et al. 2014

Rev. Ciênc. Agron.

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-Water body eutrophication process has been a serious problem around the world, especially in semiarid and arid region where main approach to storage water is reservoir. The aim of this work was to investigate the spatial and seasonal variability in water quality of a reservoir in a semi-arid tropical region with regards to its trophic state, and to identify the sources of nutrient input to the reservoir. Essa pesquisa foi realizada no reservatório Orós, segundo maior do estado do Ceará-Brasil. This research was developed in the Orós reservoir, the second one most important reservoir in Ceará State, Brazil. Samples were collected bimonthly during the period April 2008 to April 2010, from sex sampling points representing the outlet of tributaries, and one point down of the dam. The study included the following variables: total phosphorus, transparency and chlorophyll-a. RESUMO -O processo de eutrofização de corpos aquáticos tem se tornado um sério problema em diferentes partes do globo, sobretudo em regiões áridas e semiáridas no qual o armazenamento d'água ocorre principalmente em reservatórios superficiais. Objetivou-se com este trabalho investigar a variabilidade espacial e sazonal da qualidade da água em reservatório do semiárido tropical, quanto ao seu estado trófico bem como identificar as fontes de aportes de nutrientes ao reservatório. Essa pesquisa foi realizada no reservatório Orós, segundo maior do estado do Ceará-Brasil. As coletas foram realizadas bimestralmente no período de abril/08 a abril/10, em sete pontos de amostragem, sendo seis nos principais afluentes do reservatório e o sétimo logo a jusante da barragem. O estudo considerou as seguintes variáveis: fósforo total, transparência e a clorofila "a". Para a avaliação do estado trófico foi aplicado o Índice de Estado Trófico (IET) modificado de Carlson. Foram elaborados mapas da dinâmica espacial e sazonal da qualidade das águas do reservatório. De acordo com os valores médios do fósforo total (> 0,050 mg L -1 ), as águas enquadram-se na classe eutrófica. As maiores concentrações de clorofila "a" foram verificadas na estação seca, com valores variando de 3,8 a 26,5 µg L -1 , expressando elevadas variações temporais e espaciais. As águas apresentaram-se estróficas, quanto ao IET médio, em todos os pontos amostrados. Os resultados indicam uma deterioração da qualidade da água e uma necessidade de intervenções destinadas a reduzir o lançamento de resíduos e, consequentemente, melhorar o estado trófico das águas do açude Orós. Palavras

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Section: Phosphorus Contributionmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Land use and trophic state dynamics in a tropical semi-arid reservoir

Santos

Andrade²,

Neto³

et al. 2014

Rev. Ciênc. Agron.

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show abstract

“…Controversy exists, however, on the effects of increasing N concentrations on submersed macrophytes and the mechanisms behind. First, it is difficult to distinguish the effects of N from those of P due to the close NeP relationship (Downing, 1992;Wang et al, 2008b;Kosten et al, 2009), and the role of N versus P in limiting phytoplankton per se has long been debated (Elser et al, 2007;Lewis and Wurtsbaugh, 2008;Schindler et al, 2008;Conley et al, 2009;Wang et al, 2008b, Wang andWang, 2009). Secondly, some field experiments suggest that periphyton abundance is determined by the abundance of grazers rather than by the concentrations of nutrients (Jones et al, 2002;Jones and Sayer, 2003).…”

mentioning

confidence: 99%

Effects of high nitrogen concentrations on the growth of submersed macrophytes at moderate phosphorus concentrations

Wang

et al. 2015

Water Research

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“…In our study lakes, phosphorus often was the limiting factor for primary production (Wang and Wang, 2009). Hence, we considered Chl-a, total phosphorus (TP) and orthophosphate (PO 4 3− -P) in water column as proxies for pelagic productivity, while total phosphorus in surface sediment (TPs) as proxy for benthic productivity.…”

Section: Measurement Of Environmental Parametersmentioning

confidence: 75%