Speciation of lipid and humic fractions in soils under pine and eucalyptus forest in northwest Spain and its effect on water repellency

Blas, E. de; Rodríguez‐Alleres, M.; Almendros, G.

doi:10.1016/j.geoderma.2009.12.007

Cited by 85 publications

(47 citation statements)

References 33 publications

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“…Different concentrations in extractable lipid content could explain differences in WR persistence of samples from the same plant species. In agreement with us, De Blas et al (2010) reported the effect of lipid humic fractions on soil WR. They found the free lipid fraction to be the most relevant soil fraction inducing WR, although, they also outlined the importance of the particulate organic matter and extractable humic acids.…”

Section: Discussionsupporting

confidence: 89%

“…They suggested that the severity of repellency was not influenced by the total amount of lipids or any lipid fraction in the bulk soil but rather by orientation of amphipathic compounds. Samples for those studies were taken under very different plant covers; Pinus and Eucalyptus (De Blas et al, 2010) and different grass covers (Horne and McIntosh, 2000), so the origin and in turn the quality of SOM and its particular interaction with the chemical components of the surface could explain these differences. Thus, it would be interesting to know more about differences in extractable lipids and organic fractions between species to evaluate their possible specific influence on soil WR.…”

Section: Discussionmentioning

confidence: 99%

“…In fact, literature has emphasized the importance of lipid fractions released to soil by plants or microorganisms (fungi) (Franco et aL, 2000;Hudson et aL, 1994;Ma'shum et aL, 1988 ), as well as the behavior of specific characteristics of the organic matter, in general assodated with moisture regimes, e.g., temporarily waterlogged soils (Fridland, 1982 ). In particular, considerable experimental effort has been carried out in the last decade to identify specific substances with a potential relevance on WR (De Blas et aL, 2010;Doerr et aL, 2oo5b;Franco et aL, 1994Franco et aL, , 1995Hudson et aL, 1994;McIntosh and Home, 1994;Wallis et al, 1993 ).…”

Section: Introductionmentioning

confidence: 99%

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Biological and chemical factors controlling the patchy distribution of soil water repellency among plant species in a Mediterranean semiarid forest

et al. 2013

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Natural soil water repellency is a property that has already been observed in forest soils and is characterized by its patchydistribution. Ihere are many factors involved in its development. In this work, we have studied a large numberof chemical and biological factors underthe influence of differentplantspecies (Pinus halepensis, Quercus rotundifolia, Cistus albidus and Rosmarinus officinalis) to leam which has the greatest responsibility for its presence and persistence in the top-soillayer. We obselVed strong and significant correlations between ergosterol, giomalin related soil protein (GRSP), extractable lipids, soil organic matter (SOM) content and water repellency (WR). Our results suggested lipid fraction as the principal factor. Moreover, apart from Pinus, fungal biomass seems to be also related to the SOM content. Soil WR found under Pinus appears to be the most influenced by fungi. Quality of SOM, to be precise, lipid fraction could be responsible for WR and its relationship with fungal activity.

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Section: Discussionsupporting

confidence: 89%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Biological and chemical factors controlling the patchy distribution of soil water repellency among plant species in a Mediterranean semiarid forest

et al. 2013

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“…The severity of SWR significantly varies depending on vegetation species and soil depths (Doerr et al, 2002Buczko et al, 2005;de Blas et al, 2010de Blas et al, , 2013Neris et al, 2012;Mao et al, 2014;Zavala et al, 2014). For instance, soil under eucalyptus always showed more severe water repellency than under pine during dry periods in northwest Spain Benito, 2011, 2012).…”

Section: Introductionmentioning

confidence: 99%

“…Morley et al (2005) found large variations in SWR from extremely repellent to non-repellent sandy soil under grasses, at depths ranging from 0 to 40 cm. As vegetation is the primary input of organic matter to soils (Van Bergen et al, 1997;Kögel-Knabner, 2002), it is now well accepted that SWR is mainly the result of accumulated hydrophobic organic compounds in soils originally derived from vegetation (Bisdom et al, 1993;DeBano, 2000;Doerr et al, 2000;Horne and McIntosh, 2000;Hansel et al, 2008;de Blas et al, 2010de Blas et al, , 2013 and to a smaller extent from microbes (Hallett and Young, 1999;Feeney et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Predicting soil water repellency using hydrophobic organic compounds and their vegetation origin

Mao

Nierop

Rietkerk

et al. 2015

SOIL

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Abstract. It is widely accepted that soil water repellency (SWR) is mainly caused by plant-derived hydrophobic organic compounds in soils; such hydrophobic compounds are defined as SWR markers. However, the detailed influence of SWR markers on SWR is yet unclear and the knowledge of their original sources is still limited. The aims of this study are to select important SWR markers to predict SWR based on their correlation with SWR and to determine their origin. In our study, sandy soils with different SWR were collected, along with their covering vegetation, i.e. plant leaves/needles and roots. A sequential extraction procedure was applied to the soils to obtain three organic fractions: dichloromethane (DCM)/MeOH soluble fraction (D), DCM/MeOH insoluble fraction of isopropanol/ammonia solution (IPA/NH 3 ) extract (AI) and DCM/MeOH soluble fraction of IPA/NH 3 extract (AS), which were subdivided into 10 dominant SWR marker groups: D fatty acid, D alcohol, D alkane, AI fatty acid, AI alcohol, AI ω-hydroxy fatty acid, AI α,ω-dicarboxylic acid, AS fatty acid, AS alcohol and AS ω-hydroxy fatty acid. Waxes and biopolyesters of the vegetation were also sequentially extracted from plants. The soils with higher SWR have significantly higher relative concentrations of AS alcohols. A number of indications suggest that AS alcohols are mainly derived from roots and most likely produced by microbial hydrolysis of biopolyesters (mainly suberins). In addition, the strong correlation between the biomarkers of plant tissues and SWR markers in soils suggests that it is more accurate to predict SWR of topsoils using ester-bound alcohols from roots, and to predict SWR of subsoils using root-derived ω-hydroxy fatty acids and α,ω-dicarboxylic acids. Considering the sandy soils studied here, the relationships we obtained need to be tested for other types of soils. Our analysis indicates that plant roots have a primary role influencing SWR relative to plant leaves.

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Carbon Sequestration Potential of Restored Coal Mine Soils

2023

Eco‐Restoration of Mine Land

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Speciation of lipid and humic fractions in soils under pine and eucalyptus forest in northwest Spain and its effect on water repellency

Cited by 85 publications

References 33 publications

Biological and chemical factors controlling the patchy distribution of soil water repellency among plant species in a Mediterranean semiarid forest

Biological and chemical factors controlling the patchy distribution of soil water repellency among plant species in a Mediterranean semiarid forest

Predicting soil water repellency using hydrophobic organic compounds and their vegetation origin

Carbon Sequestration Potential of Restored Coal Mine Soils

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