A new method to evaluate the vulnerability of watersheds facing several stressors: A case study in mediterranean Chile

Arriagada, Loretto; Rojas, Octavio; Arumí, José Luis; Munizaga, Juan; Rojas, Carolina; Vega, Claudio

doi:10.1016/j.scitotenv.2018.09.237

Cited by 25 publications

(8 citation statements)

References 106 publications

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“…They suggested using statistical analysis of water quality measurements to refine and enhance factor weights and ratings, while in the current study, weight and rating scores were assigned by using the AHP model; additionally, statistical analysis was applied to validate the proposed method. In a recent study conducted by Arriagada et al (2019) in the Andalién River watershed, located in Mediterranean Chile, they used a new method to evaluate the watershed vulnerability index (WVI) depending on three sub-indices includes environmental fragility, anthropogenic stressors, and natural disturbances. The results of WVI revealed the negative impacts of these stressors on watershed quality.…”

Section: Validation and Sensitivity Analysis Of A Developed Methodsmentioning

confidence: 99%

“…The results of WVI revealed the negative impacts of these stressors on watershed quality. The application of statistical analysis of water quality parameters was presented in the work of Arriagada et al (2019) and in the current paper, the statistical analysis was applied along with WQI and the vulnerability levels to emphasize the efficiency of the suggested method.…”

Section: Validation and Sensitivity Analysis Of A Developed Methodsmentioning

confidence: 99%

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A novel approach for assessing watershed susceptibility using weighted overlay and analytical hierarchy process (AHP) methodology: a case study in Eagle Creek Watershed, USA

Jabbar

Grote

Tucker

2019

Environ Sci Pollut Res

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Watershed vulnerability and the characterization of potential risk are important inputs for decision support tools in assessing watershed health. Most previous studies have focused on the assessment of the environmental risk using physicochemical properties of surface water and mathematical models to predict the health of a watershed. Here, we present a new methodology for evaluating watershed vulnerability using the analytic hierarchy process (AHP) and weighted overlay analysis. The new methodology provides an inexpensive approach for assessing areas that need more investigation based on known factors such hydrogeological, geological, and climate parameters without the need for site-specific physicochemical data. The proposed method was implemented using six main factors that influence water quality: land use, soil type, precipitation, slope, depth to groundwater, and bedrock type. Vulnerability was predicted for ten sub-watersheds within the Eagle Creek Watershed in Indiana using publicly available data input into geographic information system. Combination of watershed susceptibility assessment and GIS spatial analysis tools was used to produce the maps that show the susceptible zones within a watershed. A comparison of the resulting vulnerability estimates showed the expected significant positive correlations with measurements of nitrate, phosphate, temperature, and electrical conductivity. Likewise, the vulnerability estimates negatively correlated with dissolved oxygen and E. coli. Furthermore, the validation of the proposed approach revealed that the areas predicted to have high vulnerability did have lower water quality indices; the results showed a high negative correlation (r2 = 0.77, p < 0.05) between water quality index (WQI) and vulnerability which strongly suggests this method can be used successfully to assess a watershed’s susceptibility.

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Section: Validation and Sensitivity Analysis Of A Developed Methodsmentioning

confidence: 99%

Section: Validation and Sensitivity Analysis Of A Developed Methodsmentioning

confidence: 99%

A novel approach for assessing watershed susceptibility using weighted overlay and analytical hierarchy process (AHP) methodology: a case study in Eagle Creek Watershed, USA

Jabbar

Grote

Tucker

2019

Environ Sci Pollut Res

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“…Finally, urban wetland management planning is a dynamic, participatory process unique to each place [94,95]. To identify and analyze the important particulars of fragile ecosystems such as wetland systems, it is necessary to propose clear objectives and agree on protection goals.…”

Section: Macroinvertebrate Assemblagesmentioning

confidence: 99%

Coastal Wetlands: Ecosystems Affected by Urbanization?

Novoa

Rojas

Ahumada-Rudolph

et al. 2020

Water

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Coastal wetlands are ecosystems that provide multiple benefits to human settlements; nonetheless, they are seriously threatened due to both a lack of planning instruments and human activities associated mainly with urban growth. An understanding of their functioning and status is crucial for their protection and conservation. Two wetlands with different degrees of urbanization, Rocuant-Andalién (highly urbanized) and Tubul-Raqui (with little urbanization), were analyzed using temperature, salinity, dissolved oxygen, pH, turbidity, granulometry, fecal coliform, and macroinvertebrate assemblage variables in summer and winter. In both wetlands marked seasonality in salinity, temperature and sediment texture classification, regulated by oceanic influence and changes in the freshwater budget, was observed. In the Rocuant-Andalién wetland, the increases in pH, dissolved oxygen, gravel percentage, and coliform concentration were statistically significant. Urbanization generated negative impacts on macroinvertebrate assemblage structure that inhabit the wetlands; greater richness and abundance (8.5 times greater) were recorded in the Tubul-Raqui wetland than in the more urbanized wetland. The multivariate statistical analysis reflects the alteration of these complex systems.

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“…Porém, em situações em que o solo tem um papel mais importante no processo, a análise da fragilidade ambiental tem se destacado como definição mais adequada para as abordagens ambientais (ARRIAGADA et al, 2019). Assim, estudos relativos à fragilidade dos ambientes são de extrema relevância ao planejamento ambiental visto que a identificação dos ambientes naturais e suas fragilidades proporcionam uma melhor definição das diretrizes e ações a serem implementadas no espaço físico -territorial, servindo de base para o zoneamento e fornecendo subsídios à gestão do território (SPÖRL e ROSS, 2004).…”

Section: Introductionunclassified

“…De acordo com Trevisan et al (2020), o estudo de fragilidade ambiental permite verificar os possíveis problemas ambientais e levar à implementação de convenções internacionais, programas de ação e políticas locais, regionais e nacionais, pois utiliza ferramentas sofisticadas como os Sistemas de Informação Geográfica (SIG) para mapear as áreas de fragilidade ambiental. Desta forma, os mapeamentos de fragilidade ambiental possibilitam a indicação de áreas nas quais os graus de fragilidade são mais baixos, com maiores opções de uso e ocupação; e aquelas de graus de fragilidade mais altos, áreas mais vulneráveis, nas quais as opções de uso são mais reduzidas (ARRIAGADA et al, 2019;CAMPOS et al, 2021;SANTOS et al, 2010;SPÖRL e ROSS, 2004).…”

Section: Introductionunclassified

Delimitação Dos Índices De Fragilidade Ambiental Do Município De São Lourenço Do Sul/Rs: Subsídio Para O Planejamento E Gestão Ambiental

Dors

Leandro

Cecconello

et al. 2021

R. gest. sust. ambient.

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A conciliação entre o meio ambiente e o desenvolvimento das atividades antrópicas constitui um desafio para a gestão e planejamento dos recursos naturais, visto que o uso indevido do solo pode ocasionar danos significativos à sociedade. Os estudos de fragilidade ambiental buscam auxiliar neste planejamento e gestão visando garantir a sustentabilidade do ambiente. O objetivo deste trabalho foi mapear a fragilidade ambiental do município de São Lourenço do Sul, aplicando técnicas de Sistemas de Informação Geográfica, que possibilitam a avaliação das potencialidades do meio ambiente de forma integrada, compatibilizando suas características naturais com suas restrições. Para a confecção dos mapas temáticos de índice de fragilidade ambiental foi aplicado o modelo Índice de Fragilidade Ambiental que utilizou como critérios: a declividade do terreno, tipo de solo, litologia, clima, mata ciliar, ocupação humana, cobertura vegetal e o uso do solo. O modelo se mostrou eficaz e identificou que os índices de fragilidade Muito Alto, Alto e Médio, representaram 30,3%, 67,1% e 2,6%, respectivamente, da área total do município. O índice de fragilidade Muito Alto está associado às áreas de planícies fluviais. Por outro lado o índice de fragilidade Alto está relacionado principalmente à cobertura vegetal, o uso do solo e a extensa malha hidrográfica do município.

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A new method to evaluate the vulnerability of watersheds facing several stressors: A case study in mediterranean Chile

Cited by 25 publications

References 106 publications

A novel approach for assessing watershed susceptibility using weighted overlay and analytical hierarchy process (AHP) methodology: a case study in Eagle Creek Watershed, USA

A novel approach for assessing watershed susceptibility using weighted overlay and analytical hierarchy process (AHP) methodology: a case study in Eagle Creek Watershed, USA

Coastal Wetlands: Ecosystems Affected by Urbanization?

Delimitação Dos Índices De Fragilidade Ambiental Do Município De São Lourenço Do Sul/Rs: Subsídio Para O Planejamento E Gestão Ambiental

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