Influence of geomorphological variables on mountainous stream water chemistry (Sierras Pampeanas, Córdoba, Argentina)

Lecomte, Karina Leticia; García, María Gabriela Nachón; Formica, Stella M.; Depetris, Pedro J.

doi:10.1016/j.geomorph.2009.04.016

Cited by 23 publications

(16 citation statements)

References 28 publications

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“…The relationship between mean basin slope and pH was positive, which is in accordance with Lecomte et al . (), but conflicts with the findings of Young et al . () and Rothwell et al .…”

Section: Discussionmentioning

confidence: 99%

“…The influence of natural originated landscape factors on water quality has also been widely studied. Geomorphological characteristics such as slope or elevation (D'Arcy and Carignan, ; Andersson and Nyberg, ; Lecomte et al ., ) as well as the cover of soil or bedrock (Holloway et al ., ; Young et al ., ; Ågren and Löfgren, ) or all of these in a multivariate setting, have been found to affect water quality (Sliva and Williams, ; Varanka and Luoto, ). As these features interact in complex ways, also with land use factors, it is crucial to understand their effects on water quality.…”

Section: Introductionmentioning

confidence: 99%

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Geomorphological factors predict water quality in boreal rivers

Varanka

Hjort

Luoto

2014

Earth Surf Processes Landf

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Water quality is the outcome of numerous landscape factors in the catchment. In addition to land use, soil deposits, bedrock and topography are central in different catchment processes and thus important in predicting water quality. In this study, we explored the influence of geomorphological factors at the catchment scale on water quality in 32 boreal rivers in Finland. Water quality was studied through total phosphorus, total nitrogen, pH and water colour, whereas geomorphological factors covered variables from topography, bedrock and surficial ground material (Quaternary soil deposits). Spearman's rank correlation test was used to study the correlations between variables. The relationship between water quality and geomorphology was analysed using novel multivariate methods by fitting of geomorphological vectors and smooth surfaces onto a non‐metric multidimensional scaling (NMDS) scattergram. Hierarchical partitioning (HP) was used to assess the relative importance of geomorphological variables on water quality. Quaternary soil deposits, especially the covers of clay‐silt and till soils, were important factors in relation to phosphorus and nitrogen based on both NMDS and HP analyses. For example, clay‐silt cover explained over 40% of the variation in these nutrients according to HP. The variation in river water pH was best explained by the covers of sand and open bedrock terrain as well as by catchment topography. Geomorphological variables differed in their effect and relative significance, and thus several geomorphological attributes need to be considered when examining variation in water quality. In conclusion, these results demonstrate that geomorphological factors can be used to predict physical–chemical water quality in a cost‐efficient manner in boreal rivers. NMDS was successfully applied in water quality analyses at the catchment scale. Copyright © 2014 John Wiley & Sons, Ltd.

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“…The relationship between mean basin slope and pH was positive, which is in accordance with Lecomte et al . (), but conflicts with the findings of Young et al . () and Rothwell et al .…”

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Geomorphological factors predict water quality in boreal rivers

Varanka

Hjort

Luoto

2014

Earth Surf Processes Landf

View full text Add to dashboard Cite

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“…Meybeck et al, 2006Meybeck et al, , 2007. from the land-cover influences (discussed below), catchment-scale studies reported effects of temperature (Dalai et al, 2002;Oliva et al, 2003), rock/soil age (Dahlgren et al, 1999;Porder et al, 2007), gradient of slope (Lecomte et al, 2009) and physical denudation (Dalai et al, 2002;Millot et al, 2002) on silicate weathering rates. Additionally, permafrost thawing could substantially impact DSi fluxes (Huh and Edmond, 1999).…”

Section: Discussionmentioning

confidence: 99%

Changes in dissolved silica mobilization into river systems draining North America until the period 2081–2100

Moosdorf

Hartmann

Lauerwald

2011

Journal of Geochemical Exploration

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“…Variations in landscape and watershed characteristics often result in variations of ecological and hydrological conditions, thereby altering contaminant production, transport and delivery to streams (Xiao and Ji, 2007). As a result, landscape and watershed landscape characteristics have been increasingly considered when exploring the factors affecting water contaminants in a variety of environments and across a range of scales (Lecomte et al, 2009;Zhou et al, 2012). Exploring the relationships between watershed landscape characteristics and seasonal variability of stream water contaminants has considerable importance for watershed management.…”

Section: Introductionmentioning

confidence: 99%