Water quality change and habitat potential in riparian ecosystems

Randhir, Timothy O.; Ekness, Paul

doi:10.1016/j.ecohyd.2013.09.001

Cited by 27 publications

(12 citation statements)

References 21 publications

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“…Modeling tools, when combined with stakeholder involvement, can clarify the spatial and temporal impacts of modeling assumptions (Garrick et al ., ) and analysis at multiple scales can help support a spatially variable policy for watershed management (Ekness and Randhir, ; Erol and Randhir, ; Randhir and Ekness, ). By taking a landscape‐based ecosystem services approach, we can first evaluate what level of services can be “produced” upstream of Jakarta.…”

Section: Methodsmentioning

confidence: 99%

Changing the Course of Rivers in an Asian City: Linking Landscapes to Human Benefits through Iterative Modeling and Design

Vollmer

Costa

Lin

et al. 2015

J American Water Resour Assoc

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Concerns over water scarcity, climate change, and environmental health risks have prompted some Asian cities to invest in river rehabilitation, but deciding on the end goals of rehabilitation is a complex undertaking. We propose a multidisciplinary framework linking riparian landscape change to human well‐being, providing information relevant to decision makers, in a format that facilitates stakeholder involvement. We illustrate this through a case study of the densely settled, environmentally degraded, and flood prone Ciliwung River flowing through metropolitan Jakarta, Indonesia. Our methodology attempts to respond to this complexity through an iterative approach, strongly based on conceptualization and mathematical modeling. Nested hydrologic, hydrodynamic, and water quality models provide outputs at catchment‐, corridor‐, and localized site‐scales. Advanced 3‐D landscape modeling is used for procedural design and precise visualization of proposed changes and their impacts, as predicted by the mathematical models. Finally, participatory planning and design methods allow us to obtain critical stakeholder feedback in shaping a socially acceptable approach. Our framework aims at demonstrating that a change in paradigm in river rehabilitation is possible, and providing future scenarios that balance concerns over flooding, water quality, and ecology, with the realities of a rapidly growing megacity.

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Section: Methodsmentioning

confidence: 99%

Changing the Course of Rivers in an Asian City: Linking Landscapes to Human Benefits through Iterative Modeling and Design

Vollmer

Costa

Lin

et al. 2015

J American Water Resour Assoc

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“…Intact riparian zones can effectively protect and improve river water quality (Collins et al, 2013;Randhir and Ekness, 2013). Reduction in vegetation density in riparian zones can increase the amount of amino nitrogen, total phosphorus and dissolved phosphorus in river water (Ragosta et al, 2010).…”

Section: Discussionmentioning

confidence: 99%

“…Complete riparian zones can effectively protect and improve river water quality (Collins et al, 2013;Randhir and Ekness, 2013); 200-m riparian zones in agricultural and urban areas can effectively reduce non-point source load (Tran et al, 2010), and forest riparian zones can significantly protect and improve river water quality (Fernandes et al, 2014). Conversely, reduction in vegetation density in riparian zones can result in increased amounts of fecal bacteria in surface water (Ragosta et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Relationships between river water quality and landscape factors in Haihe River Basin, China: Implications for environmental management

Zheng

Chen

et al. 2016

Chin. Geogr. Sci.

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River water plays a key role in human health, and in social and economic development, and is often affected by both natural factors and human activities. An in-depth understanding of the role of these factors can help in developing an effective catchment management strategy to protect precious water resources. This study analyzed river water quality, patterns of terrestrial and riparian ecosystems, intensity of agricultural activities, industrial structure, and spatial distribution of pollutant emissions in the Haihe River Basin in China for the year of 2010, identifying the variables that have the greatest impact on river water quality. The area percentage of farmland in study area, the percentage of natural vegetation cover in the 1000-m riparian zone, rural population density, industrial Gross Domestic Product (GDP)/km 2 , and industrial amino nitrogen emissions were all significantly correlated with river water quality (P < 0.05). Farming had the largest impact on river water quality, explaining 43.0% of the water quality variance, followed by the coverage of natural vegetation in the 1000-m riparian zone, which explained 36.2% of the water quality variance. Industrial amino nitrogen emissions intensity and rural population density explained 31.6% and 31.4% of the water quality variance, respectively, while industrial GDP/km 2 explained 26.6%. Together, these five indicators explained 67.3% of the total variance in water quality. Consequently, water environmental management of the Haihe River Basin should focus on adjusting agricultural activities, conserving riparian vegetation, and reducing industrial pollutant emissions by optimizing industrial structure. The results demonstrate how human activities drive the spatial pattern changes of river water quality, and they can provide reference for developing land use guidelines and for prioritizing management practices to maintain stream water quality in a large river basin. Keywords: land use; watershed management; river water quality; gradient analysis Citation: Xu Huashan, Zheng Hua, Chen Xiaoshu, Ren Yufen, Ouyang Zhiyun, 2016. Relationships between river water quality and landscape factors in Haihe River Basin, China: implications for environmental management.

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“…Solos sem cobertura vegetal estão sujeitos ao deslocamento de poluentes tóxicos para os rios por meio da lixiviação. Neste caso, a presença de vegetação próxima às margens do rio oferece proteção contra estes contaminantes (Coelho-Souza et al, 2007;Randhir et al, 2013). A degradação da vegetação promovida pela urbanização e atividades agrícolas pode ter favorecido o deslocamento de compostos tóxicos para o rio durante o período chuvoso, resultando no efeito tóxico observado.…”

Section: Características Físicas Químicas E Biológicasunclassified

Caracterização estacional das variáveis físicas, químicas, biológicas e ecotoxicológicas em um trecho do Rio Paraíba do Sul, SP, Brasil

Queiroz¹,

Silva²,

Paiva³

2017

Rev. ambiente água

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RESUMOO Rio Paraíba do Sul está localizado em uma região brasileira com elevada densidade populacional e grande importância socioeconômica. Em seu trecho paulista, o rio encontra-se impactado e com a qualidade da água comprometida devido à retirada da vegetação ciliar, o aumento de áreas impermeáveis, a atividade industrial, a utilização de insumos agrícolas e, principalmente, pelo lançamento de esgotos sem tratamento adequado. O objetivo deste trabalho foi caracterizar, durante as estações seca e chuvosa, a qualidade da água do Rio Paraíba do Sul quanto as variáveis físicas, químicas, biológicas e ecotoxicológicas em seu trecho médio superior. As coletas das amostras foram realizadas trimestralmente entre os meses de agosto de 2013 e agosto de 2014. Foram determinadas variáveis: pH, temperatura, condutividade, turbidez, oxigênio dissolvido (OD), demanda bioquímica de oxigênio (DBO), demanda química de oxigênio (DQO), fósforo total (PT), sólidos totais (ST), coliformes termotolerantes (CT), clorofila-a, efeito tóxico agudo (ETA) e crônico (ETC) e Índice de Estado Trófico (IET). Os resultados referentes à qualidade das águas mostraram que as variáveis OD, PT e CT estavam em desacordo com o estabelecido para um rio classe 2, conforme a resolução CONAMA 357/2005 (2005). Algumas variáveis apresentaram uma redução ao longo do período avaliado, como DBO (42,4%), ST (31,1%) e DQO (21,3%). No período chuvoso foram observados ETA e ETC. A análise estatística mostrou que a precipitação pluviométrica possui grande influência sobre OD, DBO, ST, clorofila-a, ETA e ETC, atuando como um possível agente intensificador de impactos sobre este manancial.Palavras-chave: contaminação da água, ecotoxicologia aquática, organismos-teste, precipitação pluviométrica, uso do solo.Seasonal characterization of the physical, chemical, biological and ecotoxicological variables in a stretch of the Paraíba do Sul River, SP, Brazil ABSTRACTThe Paraíba do Sul River is located in a Brazilian region with high population density and great socio-economic importance. In the São Paulo stretch, the river is impacted and water

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Water quality change and habitat potential in riparian ecosystems

Cited by 27 publications

References 21 publications

Changing the Course of Rivers in an Asian City: Linking Landscapes to Human Benefits through Iterative Modeling and Design

Changing the Course of Rivers in an Asian City: Linking Landscapes to Human Benefits through Iterative Modeling and Design

Relationships between river water quality and landscape factors in Haihe River Basin, China: Implications for environmental management

Caracterização estacional das variáveis físicas, químicas, biológicas e ecotoxicológicas em um trecho do Rio Paraíba do Sul, SP, Brasil

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