{"type": "FeatureCollection", "features": [{"id": "10.1016/j.geoderma.2025.117290", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-25T16:16:19Z", "type": "Journal Article", "created": "2025-04-11", "title": "Soil structural indicators as predictors of biological activity under various soil management practices", "description": "Soil structure is a key feature in controlling the turnover of organic matter in soils. The spatial arrangement of solids and pores in agricultural topsoil can be actively influenced by management practices, such as tillage and cropping systems, which in turn can affect the resident microbial communities and their activities. However, carbon mineralisation and microbial activity are usually measured in sieved samples, which provides information on gross potentials under optimal conditions. Under these conditions, the spatial heterogeneities that are specific to different management practices are reduced or totally removed. In this study, we combined X-ray computer tomography (X-ray CT) and isothermal calorimetry to investigate the effect of soil structure on heat dissipation, as an indicator of biological activity. Samples were collected from the topsoil of a long-term field experiment (12\u00a0years) that included four different land uses: conventional vs. reduced tillage, each with either maize or winter wheat as the main crop in the rotation. We compared the response of undisturbed soil cores (3\u00a0cm in height, 2.7\u00a0cm in diameter) to the addition of water and glucose in specific pore sizes, ranging in radii of 15 to 75\u00a0\u00b5m or 3 to 75\u00a0\u00b5m. The pore structure and indicators of particulate organic material were quantified using X-ray CT with a voxel resolution of 15\u00a0\u00b5m. This allowed us to distinguish between the effects of crop rotation and tillage regime on biological activity, soil structure and the feedback between the two. Heat dissipation correlated significantly with X-ray CT derived porosity, pore surface density and soil matrix grey value, all of which were affected by both tillage regime and crop rotation. Heat dissipation in maize plots after glucose addition to the pore size range with radii of 3 to 75\u00a0\u00b5m was greater than in the winter wheat systems, but not when added to the pore size range with radii of 15 to 75\u00a0\u00b5m. The study showed that structural indicators can explain up to 81\u00a0% and 95\u00a0% of the variance in total heat dissipation after glucose and water addition, respectively, but only 60\u00a0% of the heat dynamics, here defined as the time taken for 50\u00a0% of total heat to be dissipated. The results emphasise the importance of soil structure in regulating microbial decomposition of soil organic matter and warrants further investigations.", "keywords": ["X-ray CT", "Crop rotation", "Biological activity", "Science", "Soil structure", "Q", "[SDU.STU] Sciences of the Universe [physics]/Earth Sciences", "Soil Science", "Tillage regime", "Micro-habitat", "Calorimetry"]}, "links": [{"href": "https://pub.epsilon.slu.se/37077/1/leuther-f-et-al-20250508.pdf"}, {"href": "https://doi.org/10.1016/j.geoderma.2025.117290"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Geoderma", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.geoderma.2025.117290", "name": "item", "description": "10.1016/j.geoderma.2025.117290", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.geoderma.2025.117290"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2025-05-01T00:00:00Z"}}, {"id": "10.1079/bjn2003932", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-25T16:18:01Z", "type": "Journal Article", "created": "2003-09-20", "title": "Methane-Suppressing Effect Of Myristic Acid In Sheep As Affected By Dietary Calcium And Forage Proportion", "description": "

The efficiency of myristic acid (14:0) as a feed additive to suppress CH4emissions of ruminants was evaluated under different dietary conditions. Six sheep were subjected to a 6 \uffc3\uff97 6 Latin square arrangement. A supplement of non-esterified 14: 0 (50 g/kg DM) was added to two basal diets differing in their forage:concentrate values (1:1/5 and 1: 0/5), which were adjusted to dietary Ca contents of 4/2 and 9/0 g/ kg DM, respectively. Comparisons were made with the unsupplemented basal diets (4/2 g Ca/kg DM). The 14:0 supplementation decreased (P< 0/001) total tract CH4release depending on basal diet type (interaction,P< 0/001) and dietary Ca level (P< 0/05,post hoctest). In the concentrate-based diet, 14:0 suppressed CH4emission by 58 and 47% with 4/2 and 9/0 g Ca/kg DM, respectively. The 14:0 effect was lower (22%) in the forage-based diet and became insignificant with additional Ca. Myristic acid inhibited (P< 0/05) rumen archaea without significantly altering proportions of individual methanogen orders. Ciliate protozoa concentration was decreased (P< 0/05,post hoctest) by 14:0 only in combination with 9/0 g Ca/kg DM. Rumen fluid NH3concentration and acetate:pro-pionate were decreased (P< 0/05) and water consumption was lower (P< 0/01) with 14:0. The use of 14:0 had no clear effects on total tract organic matter and fibre digestion; this further illustrates that the suppressed methanogenesis resulted from direct effects against methanogens. The present study demonstrated that 14:0 is a potent CH4inhibitor but, to be effective in CH4mitigation feeding strategies, interactions with other diet ingredients have to be considered.

", "keywords": ["Male", "2. Zero hunger", "Rumen", "Sheep", "Forage", "0402 animal and dairy science", "Water", "Calorimetry", " Indirect", "04 agricultural and veterinary sciences", "Hydrogen-Ion Concentration", "Animal Feed", "Myristic Acid", "Depression", " Chemical", "Dietary Supplements", "Animals", "Animal Nutritional Physiological Phenomena", "Calcium", "Methane; Myristic acid; Forage; Calcium", "Myristic acid", "Methane"], "contacts": [{"organization": "Andrea, Machm\u00fcller, Andrea, Machm\u00fcller, Carla R, Soliva, Michael, Kreuzer,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1079/bjn2003932"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/British%20Journal%20of%20Nutrition", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1079/bjn2003932", "name": "item", "description": "10.1079/bjn2003932", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1079/bjn2003932"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2003-09-01T00:00:00Z"}}, {"id": "10.5281/zenodo.5547311", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-25T16:23:18Z", "type": "Dataset", "title": "Energetic return on investment determines overall soil microbial activity.", "description": "Data and R codes used for the manuscript entitled ' Energetic return on investment determines overall soil microbial activity.'", "keywords": ["organic carbon", "community composition", "microorganisms", "bioenergetics", "microbial activity", "FT-ICR-MS", "calorimetry", "soil"], "contacts": [{"organization": "Dufour, Louis J.P., Herrmann, Anke M., Leloup, Julie, Przybylski, C\ufffd\ufffddric, Foti, Ludovic, Abbadie, Luc, Nunan, Naoise,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.5281/zenodo.5547311"}, {"rel": "self", "type": "application/geo+json", "title": "10.5281/zenodo.5547311", "name": "item", "description": "10.5281/zenodo.5547311", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.5281/zenodo.5547311"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-01-01T00:00:00Z"}}, {"id": "10.5281/zenodo.10995988", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-25T16:22:08Z", "type": "Dataset", "created": "2023-01-01", "title": "Physical and technical characterization of main agricultural plastics articles used for protected cultivation systems", "description": "The folder 'Thermal and spectroscopic data on the characterization of mulch films.rar' includes differential scanning calorimetry (DSC), thermogravimetry (TG), Fourier-transform infrared spectroscopy (FTIR), and water contact angle (WCA) raw data and images relevant to the characterization of conventional and biodegradable mulch films. 7 mulching films consisting of 3 different conventional linear low-density polyethylene (LLDPE, coded as PE) films and 4 different biodegradable (PBAT-based, coded as BIO) films are analysed.In particular, data regarding M-BIOIT-15-black-0, M-PEIT-15-black-0, M-BIOEL-15-black-0, M-PEEL-15-black-0, M-PEEL-50-transparent-0, M-BIODE-30-black-0 and M-BIOFI-15-black-0 are included.", "keywords": ["Polymer sciences", "Calorimetry", "Spectroscopy"], "contacts": [{"organization": "Institute of Polymers, Composites and Biomaterials", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.5281/zenodo.10995988"}, {"rel": "self", "type": "application/geo+json", "title": "10.5281/zenodo.10995988", "name": "item", "description": "10.5281/zenodo.10995988", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.5281/zenodo.10995988"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2024-04-19T00:00:00Z"}}, {"id": "10261/405692", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-25T16:24:36Z", "type": "Journal Article", "created": "2025-10-03", "title": "Comparison of Isothermal Microcalorimetry Versus Respirometry Assays to Evaluate Short- and Long-term Impact of Microplastics on Soil Microbial Activity", "description": "Abstract

Soil microbial activity is a key indicator of soil health, traditionally assessed using methods like enzymatic activity, community-level physiological profiling (CLPP), microbial biomass, and soil respiration. This study introduces isothermal microcalorimetry assessed with the CalScreener\uffe2\uff84\uffa2 system as a novel tool for evaluating soil activity and validates its use in assessing the impact of anthropogenic pollutants like microplastics. Soil samples were exposed to microplastic particles from conventional and biodegradable plastic mulches, one of the main sources of microplastic pollution in agricultural soils. Microbial activity was assessed after short-term (10\uffc2\uffa0days) and long-term (12\uffc2\uffa0months) microplastic exposure using respirometry, isothermal microcalorimetry, and microbial CLPP. Isothermal microcalorimetry's effectiveness to assess microbial activity was validated by observing distinct thermograms between active and autoclaved soil, and differences between treatments under basal and glucose-amended conditions. Both respirometry and microcalorimetry showed similar results, revealing higher basal activity in soils with biodegradable microplastics after long-term exposure, compared to conventional microplastics and unamended soil. Isothermal microcalorimetry offers advantages over traditional methods, including shorter assessment periods and the need for smaller soil sample amounts. While CLPP did not detect significant differences in overall soil activity among treatments, it may be a useful technique for characterizing microbial functional traits. This study provides, for the first time, insights into the use of isothermal microcalorimetry as a novel methodological approach to evaluate the potential impact of microplastics on soil biological activity.