Linking Forest Cover to Water Quality: A Multivariate Analysis of Large Monitoring Datasets

Brogna, Delphine; Michez, Adrien; Jacobs, Sander; Dufrêne, Marc; Vincke, Caroline; Dendoncker, Nicolas

doi:10.3390/w9030176

Cited by 27 publications

(15 citation statements)

References 37 publications

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“…Removing the influence of spatial autocorrelation and ecological factors decreases, at the Walloon scale, the biological water quality variability explained by forest cover computed outside the functional riparian buffer respectively from 39 to 14%. This result is similar with the quantitative assessment of forest cover effect on physico-chemical water quality in Wallonia (Brogna et al, 2017a). Intra-ecoregion effect of elevation is, as expected, less important within the ecoregions as these are more homogeneous in that respect.…”

Section: Forest Cover Link With Biological Water Qualitysupporting

confidence: 88%

“…This finding is in line with Dahm et al (2013)'results identifying physico-chemical water quality as one of the main discriminating factor of biological water quality. This renders interpretation even more complex as physicochemical water quality has been proven to be linked to LULC and forest in particular in Wallonia (Brogna et al, 2017a). This is also in line with the nutrient enrichment shown in European studies and in Wallonia [e.g.…”

Section: Forest Cover Link With Biological Water Qualitymentioning

confidence: 53%

“…needle-leaved, broad-leaved and mixed forest), cropland, grassland, artificial surfaces, water surfaces and shrubs-heathlands. We assumed as in other studies (Brogna et al, 2017a(Brogna et al, , 2017b that the evolution of the retained classes in the region was minor throughout the studied period (2009e2014).…”

Section: Land Use and Land Cover Data And Pressuresmentioning

confidence: 99%

See 2 more Smart Citations

Forest cover correlates with good biological water quality. Insights from a regional study (Wallonia, Belgium)

Brogna

Dufrêne

Michez

et al. 2018

Journal of Environmental Management

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Forested catchments are generally assumed to provide higher quality water in opposition to agricultural and urban catchments. However, this should be tested in various ecological contexts and through the study of multiple variables describing water quality. Indeed, interactions between ecological variables, multiple land use and land cover (LULC) types, and water quality variables render the relationship between forest cover and water quality highly complex. Furthermore, the question of the scale at which land use within stream catchments most influences stream water quality and ecosystem health remains only partially answered. This paper quantifies, at the regional scale and across five natural ecoregions of Wallonia (Belgium), the forest cover effect on biological water quality indices (based on diatoms and macroinvertebrates) at the riparian and catchment scales. Main results show that forest cover - considered alone - explains around one third of the biological water quality at the regional scale and from 15 to 70% depending on the ecoregion studied. Forest cover is systematically positively correlated with higher biological water quality. When removing spatial, local morphological variations, or population density effect, forest cover still accounts for over 10% of the total biological water quality variation. Partitioning variance shows that physico-chemical water quality is one of the main drivers of biological water quality and that anthropogenic pressures often explain an important part of it (shared or not with forest cover). The proportion of forest cover in each catchment at the regional scale and across all ecoregions but the Loam region is more positively correlated with high water quality than when considering the proportion of forest cover in the riparian zones only. This suggests that catchment-wide impacts and a fortiori catchment-wide protection measures are the main drivers of river ecological water quality. However, distinctive results from the agricultural and highly human impacted Loam region show that riparian forests are positively linked to water quality and should therefore be preserved.

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Section: Forest Cover Link With Biological Water Qualitysupporting

confidence: 88%

Section: Forest Cover Link With Biological Water Qualitymentioning

confidence: 53%

See 1 more Smart Citation

Forest cover correlates with good biological water quality. Insights from a regional study (Wallonia, Belgium)

Brogna

Dufrêne

Michez

et al. 2018

Journal of Environmental Management

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“…1806) were considered statistically significant, based on Kaiser's criterion. RDA, a constrained linear method, helps to determine the linear relationship between response variables, in this case the species pollen profile, and the matrix of such explanatory variables as geographical origin and harvesting year (Brogna et al, 2017). The null hypothesis associated with the test was that the pollen spectrum of the honeys analysed was unrelated to the explanatory variables, while the alternative hypothesis was that the pollen spectrum responded to the explanatory variables.…”

Section: Discussionmentioning

confidence: 99%

Preliminary Study on Effect of Agricultural Activities in Pollen Spectrum of Argentinean Honey

Patrignani

Fagúndez

Lupano

2019

Journal of Apicultural Science

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Honey floral origin is determined by the harversting region, but anthropogenic factors as agriculture expansion might modify the environmental flora and consequently honey floral origin. Argentina is one of the most important honey producers worldwide which, since the 1990s, has undergone an important agriculture transformation by the adoption of transgenic crops like soybean (Glycine max). However, little is known about the effects of this anthropogenic activity on the floral origin of honey or the statistical tools that could be used to analyse it. The objective of the present study was to evaluate the impact that these environmental modifications have on the pollen spectrum of honey. In order to achieve this, thirty-two samples of blossom honey were collected from three different ecoregions of the Buenos Aires province: Parana Delta and Islands, Espinal and Pampa, in two different years: 1999 and 2014. The pollen spectrum of honey samples was determined and the data obtained was analysed with multivariate statistical techniques. It could be concluded that the pollen composition of honeys from different ecoregions has significantly changed in the past years because of agriculture expansion and adaptation of transgenic crops (p=0.007). Honey samples harvested in 1999 were characterized by high values of Helianthus annuus, while in 2014 an important presence of Eryngium sp., Gleditsia triacanthos, Baccharis type, Trifolium sp. and Glycine max was observed. The present results show that honey palynological results and multivariate statistical analysis could be used as a preliminary attempt to evaluate environmental modifications.

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“…Kondisi tersebut menunjukkan bahwa Sub DAS yang berhutan lebih mampu mengendalikan bahan pencemar sehingga hasil air dari hutan lindung yang masuk ke sungai tidak tercemar. Pendapat ini sesuai dengan (Brogna et al, 2017) bahwa besarnya penutupan hutan berpengaruh terhadap kualitas hasil air. Lebih detail, residu terlarut dan sedimen menunjukkan indeks degradasi lahan, tingkat dan tren kekritisan DAS dan juga mencerminkan karakteritik suatu DAS (Lane, Hernandez, & Nichols, 1997), (Verstraeten & Poesen, 2001), (Lu, Moran, & Sivapalan, 2005), dan (Sadeghi & Saeidi, 2010).…”

Section: Kualitas Air Dari Sub Das Berhutan (Banjaran) Dan Sub Das Tiunclassified

Komparasi Nilai Ekonomi Air Irigasi Dari Daerah Aliran Sungai Berhutan Dan Tidak Berhutan

Purwanto¹

2019

J. Ilmu Lingk.

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Many forest areas in Indonesia are converted to other uses. This will impact on the hydrological conditions and the economic value of the water yield. This research applied unit analysis of Sub watersheds, with and without forest cover, Sub DAS Banjaran (forested) and Sub CAS Cangkok (not forested). Desk analysis was conducted to know land use, collecting rainfall data, instantaneous debit measurement to know the discharge of both rivers during the dry season, survey of 15 farmers using irrigation water from Sub watershed of Banjaran and 15 peasants who use irrigation water from Cangkok Sub watershed. Farmers were interviewed about the factors of production and production of rice crops to determine the economic value of water from the two sub watersheds. The results of the study show that: 1). rainfall in Baturraden is quite high (4,302 mm) but for May, July, August and September deficits for rice crops, 2). The forested sub-watershed in Baturraden is better able to regulate the water system than the non-forested sub-watershed, either quality, quantity or continuity, 3). The economic value of water for irrigation from the forested sub-watershed is Rp. 1,270,-/m3 whereas from non-forested sub-watersheds Rp. 373.5,-/m3, and 4). The economic value of water from a forested sub-watershed is Rp. 7,792,720,-/ha/year while those from non-forested sub-watersheds Rp. 2,291,796,-/ha/year. The existence of Baturraden forest is very important to the watershed ecosystem. Forested watershed was a higher economic value of water than non-forested ones so it must be conserved by involving the water user communities.

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Linking Forest Cover to Water Quality: A Multivariate Analysis of Large Monitoring Datasets

Cited by 27 publications

References 37 publications

Forest cover correlates with good biological water quality. Insights from a regional study (Wallonia, Belgium)

Forest cover correlates with good biological water quality. Insights from a regional study (Wallonia, Belgium)

Preliminary Study on Effect of Agricultural Activities in Pollen Spectrum of Argentinean Honey

Komparasi Nilai Ekonomi Air Irigasi Dari Daerah Aliran Sungai Berhutan Dan Tidak Berhutan

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