X

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Online Resource
    Online Resource
    Preferential Flow and Transport of Oocysts through the Vadose Zone
    Wiley ; 2004
    In:  Vadose Zone Journal Vol. 3, No. 1 ( 2004), p. 262-
    Details
    In: Vadose Zone Journal, Wiley, Vol. 3, No. 1 ( 2004), p. 262-
    Type of Medium: Online Resource
    ISSN: 1539-1663
    URL: Article
    DOI: 10.2136/vzj2004.0262
    Language: English
    Publisher: Wiley
    Publication Date: 2004
    detail.hit.zdb_id: 2088189-7
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Online Resource
    Open Access Request
    Availability (electronic / print)
  • 2
    Online Resource
    Online Resource
    Preferential Flow and Transport of Cryptosporidium parvum Oocysts through the Vadose Zone: Experiments and Modeling
    Wiley ; 2004
    In:  Vadose Zone Journal Vol. 3, No. 1 ( 2004-02), p. 262-270
    Details
    In: Vadose Zone Journal, Wiley, Vol. 3, No. 1 ( 2004-02), p. 262-270
    Abstract: As a result of Cryptosporidium parvum in drinking water, several outbreaks of cryptosporidiosis have occurred in the last 10 yr. Although it is generally believed that movement of pathogens through the soil is minimal, recent research has shown that appreciable numbers of C. parvum oocysts may be transported via preferential or fingered flow to groundwater. The objective of the present research was to further investigate and model the transport of oocysts through preferential flow paths in the vadose zone under a “worst‐case” scenario. This was studied by adding calves feces containing C. parvum oocysts with a Cl − tracer to undisturbed silt loam columns and disturbed sand columns during a simulated steady‐state rain. The sand columns exhibited preferential flow in the form of fingers whereas macropore flow occurred in the undisturbed cores. In the columns with fingered flow, oocysts and Cl were transported rapidly with the same velocity through the columns. Although only 14 to 86% of the amount applied, the number of oocysts transported across the columns was several orders of magnitude above an infective dose. The macropore columns had only a very limited breakthrough of oocysts, which appeared several pore volumes after the Cl broke through initially. A simulation model for the transport of oocysts via preferential flow was developed on the basis of an existing preferential flow model for nonadsorbing solutes, with addition of a first‐order sink term for adsorbance of the C. parvum to the air–water–solid (AWS) interfaces, and with velocity and dispersivity parameters derived from Cl − transport. The breakthrough of C. parvum oocysts could be described realistically for the sand columns. However, the model could not describe oocyst transport in the columns with macropores.
    Type of Medium: Online Resource
    ISSN: 1539-1663 , 1539-1663
    URL: Article
    DOI: 10.2136/vzj2004.2620
    Language: English
    Publisher: Wiley
    Publication Date: 2004
    detail.hit.zdb_id: 2088189-7
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Online Resource
    Open Access Request
    Availability (electronic / print)
  • 3
    Online Resource
    Online Resource
    Scenario modelling of carbon mineralization in 3D soil architecture at the microscale: Toward an accessibility coefficient of organic matter for bacteria
    Wiley ; 2022
    In:  European Journal of Soil Science Vol. 73, No. 1 ( 2022-01)
    Details
    In: European Journal of Soil Science, Wiley, Vol. 73, No. 1 ( 2022-01)
    Abstract: The microscale physical characteristics of microbial habitats considerably affect the decomposition of organic matter in soils. One of the challenges is to identify microheterogeneities in soil that can explain the extent of carbon mineralization. The aim of this study was therefore to identify descriptors of μm‐scale soil heterogeneity that can explain CO 2 fluxes obtained at the mm scale. A suite of methods and models that visualize soil heterogeneity at scales relevant to microorganisms has been developed over the last decade. Among the existing 3D models that simulate microbial activity in soils, Mosaic is able to simulate, within a short computation time, the microbial degradation of organic matter at the microhabitat scale in soil using real 3D images of soil porosity. Our approach was to generate scenarios of carbon mineralization for various microscale environmental conditions and determine how the descriptors of soil structure could explain CO 2 evolution. First, we verified that the simulated diffusion of solutes in the soil samples obtained with Mosaic were the same as those obtained using the same parameter set from a robust 3D model based on a lattice Boltzmann approach. Then, we ran scenarios considering different soil pore architectures, water saturations and microorganism and organic matter placements. We found that the CO 2 emissions simulated for the different scenarios could be explained by the distance between microorganisms and organic matter, the diffusion of the substrate and the concentration of the available substrate. For some of the scenarios, we proposed a descriptor of accessibility based on the geodesic distance between microorganisms and organic matter weighted by the amount of organic matter. This microscale descriptor is correlated to the simulated CO 2 flux with a correlation coefficient of 0.69. Highlights Does the microscopic soil organisation explain the macroscopic mineralisation fluxes ? We present a new descriptor based on the geodesic distances between organic matter and microorganisms. We found a correlation between the descriptor of μm‐heterogeneity and the mineralization fluxes. Other scenarios should be carried out under wider environmental μm‐conditions to confirm our results.
    Type of Medium: Online Resource
    ISSN: 1351-0754 , 1365-2389
    URL: Issue
    URL: Article
    DOI: 10.1111/ejss.v73.1
    DOI: 10.1111/ejss.13144
    Language: English
    Publisher: Wiley
    Publication Date: 2022
    detail.hit.zdb_id: 240830-2
    detail.hit.zdb_id: 2020243-X
    detail.hit.zdb_id: 1191614-X
    SSG: 13
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Online Resource
    Open Access Request
    Availability (electronic / print)
  • 4
    Online Resource
    Online Resource
    Potential accumulation of toxic trace elements in soils during enhanced rock weathering
    Wiley ; 2023
    In:  European Journal of Soil Science Vol. 74, No. 1 ( 2023-01)
    Details
    In: European Journal of Soil Science, Wiley, Vol. 74, No. 1 ( 2023-01)
    Abstract: Terrestrial enhanced rock weathering (ERW) is a carbon dioxide removal technology that aims at accelerating one of the most powerful negative feedbacks on Earth's climate, the chemical weathering of silicates. To achieve this, ERW proposes to spread ground silicate rock on agricultural soils. According to many models, global application rates of 40 tonnes of ground basaltic rock per hectare and per year would be necessary to sequester a significant amount of CO 2 , representing up to 24% of the current net annual increase in atmospheric CO 2 . When assessing the viability of ERW as a global geo‐engineering strategy, a pivotal but overlooked question to address is whether ERW may lead to toxic trace element accumulation in soils at unauthorized and potentially harmful levels. This study evaluates the legal sustainability of ERW with regard to trace element contents in soils. We compare different trace element accumulation scenarios considering a range of rock sources, application rates and national regulatory limits. The results indicate that, at the suggested annual application rate of 40 tonnes per hectare, the first regulatory limits would be exceeded after 6 and 10 years for copper and nickel, respectively. This study argues in favour of close tailoring of ERW deployment to local conditions in order to tap into its climate mitigation potential while preserving long‐term soil uses. Highlights Terrestrial enhanced rock weathering (ERW) is a carbon sequestration technology that consists in applying rock powder to soils. This study evaluates whether rock powder application can lead to trace metals accumulation in soils beyond regulatory limits. ERW can lead to the overrun of some environmental regulatory limits within less than a decade. Specific site and rock selection will be necessary for this method to preserve long‐term soil uses.
    Type of Medium: Online Resource
    ISSN: 1351-0754 , 1365-2389
    URL: Issue
    URL: Article
    DOI: 10.1111/ejss.v74.1
    DOI: 10.1111/ejss.13343
    Language: English
    Publisher: Wiley
    Publication Date: 2023
    detail.hit.zdb_id: 240830-2
    detail.hit.zdb_id: 2020243-X
    detail.hit.zdb_id: 1191614-X
    SSG: 13
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Online Resource
    Open Access Request
    Availability (electronic / print)
  • 5
    Online Resource
    Online Resource
    To what extent can multifractal measures provide an accurate model of the porosity of soils?
    Wiley ; 2021
    In:  European Journal of Soil Science Vol. 72, No. 2 ( 2021-03), p. 510-526
    Details
    In: European Journal of Soil Science, Wiley, Vol. 72, No. 2 ( 2021-03), p. 510-526
    Abstract: Over the last decades, several authors have suggested that multifractal measures, that is, self‐similar measures defined on fractal or non‐fractal objects, could be useful to describe soil properties, to model soil processes, and to deal with their extreme microscale heterogeneity. In this context, a key question relates to the extent to which multifractal measures can indeed fulfill all the expectations they have generated. To address this question, we discuss the possibility of generating a synthetic soil image exhibiting multifractal porosity. To this end, a simple geometrical multifractal model in 2D is developed, which helps us to better understand the concept of multifractality and to generate images. We show that it is possible to generate synthetic binary images over a limited range of scales, but that a pure multifractal model for the distribution of the solid or pore mass cannot be developed due to physical constraints. Moreover, in the generated images mimicking multifractal solid space, a higher degree of multifractality corresponds to a larger porosity, rendering it difficult to tune model parameters to match actual soil properties. In addition, simple statistics relying on power‐law fits appear insufficient to characterize soil architecture even if they may capture some key multiscale indicators of observed spatial heterogeneity. We argue that the same conclusions would be reached in a three‐dimensional space, as well as for grey‐scales images.
    Type of Medium: Online Resource
    ISSN: 1351-0754 , 1365-2389
    URL: Issue
    URL: Article
    DOI: 10.1111/ejss.v72.2
    DOI: 10.1111/ejss.13018
    Language: English
    Publisher: Wiley
    Publication Date: 2021
    detail.hit.zdb_id: 240830-2
    detail.hit.zdb_id: 2020243-X
    detail.hit.zdb_id: 1191614-X
    SSG: 13
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Online Resource
    Open Access Request
    Availability (electronic / print)
  • 6
    Online Resource
    Online Resource
    Response to ‘A well‐established fact: Rapid mineralization of organic inputs is an important factor for soil carbon sequestration’ by Angers et al.
    Wiley ; 2022
    In:  European Journal of Soil Science Vol. 73, No. 4 ( 2022-07)
    Details
    In: European Journal of Soil Science, Wiley, Vol. 73, No. 4 ( 2022-07)
    Type of Medium: Online Resource
    ISSN: 1351-0754 , 1365-2389
    URL: Issue
    URL: Article
    DOI: 10.1111/ejss.v73.4
    DOI: 10.1111/ejss.13272
    Language: English
    Publisher: Wiley
    Publication Date: 2022
    detail.hit.zdb_id: 240830-2
    detail.hit.zdb_id: 2020243-X
    detail.hit.zdb_id: 1191614-X
    SSG: 13
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Online Resource
    Open Access Request
    Availability (electronic / print)
  • 7
    Online Resource
    Online Resource
    Thinking with Soils: Material Politics and Social Theory Salazar, J.F., Granjou, C., Kearnes, M., Krzywoszynska, A., and Tironi, M. (eds) Bloomsbury Academic, London, UK, 2020. xv + 220 pp. £85, hardback. ISBN 978‐1‐3501‐0957‐5
    Wiley ; 2021
    In:  European Journal of Soil Science Vol. 72, No. 4 ( 2021-07), p. 1924-1927
    Details
    In: European Journal of Soil Science, Wiley, Vol. 72, No. 4 ( 2021-07), p. 1924-1927
    Type of Medium: Online Resource
    ISSN: 1351-0754 , 1365-2389
    URL: Issue
    URL: Article
    DOI: 10.1111/ejss.v72.4
    DOI: 10.1111/ejss.13076
    Language: English
    Publisher: Wiley
    Publication Date: 2021
    detail.hit.zdb_id: 240830-2
    detail.hit.zdb_id: 2020243-X
    detail.hit.zdb_id: 1191614-X
    SSG: 13
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Online Resource
    Open Access Request
    Availability (electronic / print)
  • 8
    Online Resource
    Online Resource
    Storage of soil carbon is not sequestration: Straightforward graphical visualization of their basic differences
    Wiley ; 2023
    In:  European Journal of Soil Science Vol. 74, No. 3 ( 2023-05)
    Details
    In: European Journal of Soil Science, Wiley, Vol. 74, No. 3 ( 2023-05)
    Abstract: Over the last few years, in the literature on the incorporation of crop residues in agricultural fields to mitigate climate change, there has been a growing tendency to no longer distinguish between the storage and the sequestration of organic carbon in soils. Applying, apparently for the first time, a simple “back‐of‐the‐envelope” calculation to available mineralization kinetics data, we show graphically that there are fundamental differences, both quantitatively and qualitatively, between the two concepts of storage and sequestration. To avoid confusion, they should therefore never be used interchangeably, especially when addressing farmers and policymakers. Several simplifying assumptions made in the calculations, and about which a considerable lack of understanding persists, mean that at this stage, the graphical visualization we obtained is likely to still be optimistic in terms of the already low (10%) efficacy of sequestering carbon in soils. Several research avenues are outlined to deepen our grasp of the processes involved.
    Type of Medium: Online Resource
    ISSN: 1351-0754 , 1365-2389
    URL: Issue
    URL: Article
    DOI: 10.1111/ejss.v74.3
    DOI: 10.1111/ejss.13380
    Language: English
    Publisher: Wiley
    Publication Date: 2023
    detail.hit.zdb_id: 240830-2
    detail.hit.zdb_id: 2020243-X
    detail.hit.zdb_id: 1191614-X
    SSG: 13
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Online Resource
    Open Access Request
    Availability (electronic / print)
  • 9
    Online Resource
    Online Resource
    Bypass and hyperbole in soil research: Worrisome practices critically reviewed through examples
    Wiley ; 2021
    In:  European Journal of Soil Science Vol. 72, No. 1 ( 2021-01), p. 1-20
    Details
    In: European Journal of Soil Science, Wiley, Vol. 72, No. 1 ( 2021-01), p. 1-20
    Abstract: Almost 30 years ago, a distinguished soil physical‐chemist, Grant W. Thomas, voiced serious concern about what he saw in the soil science literature as more a preoccupation with style than with substance. The present article argues that, similarly, there are reasons to be worried at the moment because of a tendency in much of the literature on soils, both within and outwith soil science, to systematically ignore certain bodies of “old” literature, even when they are extremely relevant, and also to unduly inflate the potential significance of research achievements. These two practices, referred to as “bypass” and “hyperbole”, are illustrated by several examples dealing, respectively, with soil “aggregates”, soil quality/health, soil “contributions to ecosystem services” and whole‐soil metagenomics, in the case of bypass, and with biochar, the “4 per 1000” initiative, and the role of soils in achieving Sustainable Development Goals, in the case of hyperbole. It is hoped that the present review article will lead to a healthy debate on where our discipline stands at the moment in terms of how we build on the achievements of our predecessors and how accurately we describe the significance of our work. This debate should allow soil science to evolve to meet the daunting challenges it faces in the years ahead. Highlights The literature on soils seems characterized by a significant amount of bypass and hyperbole Bypass is described, related to soil “aggregates”, soil quality/health, soil “contributions to ecosystem services” and whole‐soil metagenomics Hyperbole is described in connection with the research on biochar, the “4 per 1000” initiative, and the role of soils in achieving Sustainable Development Goals. The need to curb these deviances is stressed.
    Type of Medium: Online Resource
    ISSN: 1351-0754 , 1365-2389
    URL: Issue
    URL: Article
    DOI: 10.1111/ejss.v72.1
    DOI: 10.1111/ejss.12941
    Language: English
    Publisher: Wiley
    Publication Date: 2021
    detail.hit.zdb_id: 240830-2
    detail.hit.zdb_id: 2020243-X
    detail.hit.zdb_id: 1191614-X
    SSG: 13
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Online Resource
    Open Access Request
    Availability (electronic / print)
  • 10
    Online Resource
    Online Resource
    Influence of soil structure on the spread of Pseudomonas fluorescens in soil at microscale
    Wiley ; 2021
    In:  European Journal of Soil Science Vol. 72, No. 1 ( 2021-01), p. 141-153
    Details
    In: European Journal of Soil Science, Wiley, Vol. 72, No. 1 ( 2021-01), p. 141-153
    Abstract: For over a half a century, researchers have been aware of the fact that the physical and chemical characteristics of microenvironments in soils strongly influence the activity, growth and metabolism of microorganisms. However, many aspects of the effect of soil physical characteristics, such as the pore geometry, remain poorly understood. Therefore, the objective of the present research was to determine the influence of soil pore characteristics on the spread of bacteria, observed at the scale relevant to microbes. Pseudomonas fluorescens was introduced in columns filled with 1–2 mm soil aggregates, packed at different bulk densities. Soil microcosms were scanned at 10.87 μm voxel resolution using X‐ray computed tomography (CT) to characterize the geometry of pores. Thin sections were prepared to determine the spread and colonization of bacteria. The results showed that average bacterial cell density was 174 cells mm −2 in soil with bulk density of 1.3 g cm −3 and 99 cells mm −2 in soil with bulk density of 1.5 g cm −3 . Soil porosity and solid‐pore interfaces influence the spread of bacteria and their colonization of the pore space at lower bulk density, resulting in relatively higher bacterial densities in larger pore spaces. The study also demonstrates that thin sectioning of resin‐impregnated soil samples can be combined with X‐ray CT to visualize bacterial colonization of a 3D pore volume. This research therefore represents a significant step towards understanding how environmental change and soil management impact bacterial diversity in soils. Highlights We used a quantitative approach to study bacterial spread in soil at scales relevant to microbes. The rate of pseudomonas spread decreased with increased bulk density of soil. Soil porosity and soil‐pore interface influence Pseudomonas in lower bulk density soil. Soil structure with different pore characteristics effects spread and activity of bacteria in soil.
    Type of Medium: Online Resource
    ISSN: 1351-0754 , 1365-2389
    URL: Issue
    URL: Article
    DOI: 10.1111/ejss.v72.1
    DOI: 10.1111/ejss.12975
    Language: English
    Publisher: Wiley
    Publication Date: 2021
    detail.hit.zdb_id: 240830-2
    detail.hit.zdb_id: 2020243-X
    detail.hit.zdb_id: 1191614-X
    SSG: 13
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Online Resource
    Open Access Request
    Availability (electronic / print)
Nothing or not found what you are looking for? Please check your search query or use the Interlibrary Loan Search.
Close ⊗
This website uses cookies and the analysis tool Matomo. Further information can be found on the KOBV privacy pages