{"type": "FeatureCollection", "features": [{"id": "10.1016/j.soilbio.2014.06.024", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-22T16:16:34Z", "type": "Journal Article", "created": "2014-07-03", "title": "Identifying Response Groups Of Soil Nitrifiers And Denitrifiers To Grazing And Associated Soil Environmental Drivers In Tibetan Alpine Meadows", "description": "Defining response groups within N-related microbial communities is needed to predict land management effect on soil N dynamics, but information on such response groups and associated environmental drivers is scarce. We investigated the abundance and major populations of ammonia-oxidizing archaea (AOA) and bacteria (AOB), and nirS- and nirK-harboring denitrifiers under different grazing managements in Tibetan alpine meadow soils. Grazing increased AOB and AOA abundances up to 42 fold and 3.7 fold, respectively, and increased the percentage of AOB within total ammonia oxidizers from 3.1% to 10.8%. The abundance of nirK-like denitrifiers increased with grazing intensity, while the abundance of nirS-like denitrifiers tended to decrease. However, sub-groups within each of these broad groups of (de)nitrifiers responded differently to grazing. Soil nitrate was the main driver of the abundance of denitrifier subgroups (nirK or nirS) positively responding to grazing, while soil moisture and carbon concentration were the main drivers of the abundance of denitrifier sub-groups negatively responding to grazing. AOB and nirK-harboring denitrifiers thus generally responded more positively to grazing than AOA and nirS-harboring denitrifiers, but significant functional diversity existed within each group. Our approach demonstrates the usefulness of the concept of response groups to better characterize and understand (de)nitrifier response to grazing. (C) 2014 Elsevier Ltd. All rights reserved.", "keywords": ["nirS", "2. Zero hunger", "Soil nitrogen cycling", "[SDV]Life Sciences [q-bio]", "04 agricultural and veterinary sciences", "15. Life on land", "630", "AOA", "AOB", "Community structure", "[SDV] Life Sciences [q-bio]", "Abundance", "nirK", "amoA", "0401 agriculture", " forestry", " and fisheries"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2014.06.024"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2014.06.024", "name": "item", "description": "10.1016/j.soilbio.2014.06.024", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2014.06.024"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2014-10-01T00:00:00Z"}}, {"id": "10.1051/forest/2009083", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-09-22T16:17:16Z", "type": "Journal Article", "created": "2009-12-23", "title": "Effects Of Stand Density On Ecosystem Properties Of Subalpine Forests In The Southern Rocky Mountains, Usa", "description": "Open AccessMixed coniferous, subalpine forest communities in the Rocky Mountains are historically dense and have experienced infrequent, high-severity fire. However, many of these high-elevation stands are thinned for a number of perceived benefits.* We explored the effects of forest stand density on ecosystem properties in subalpine forests in Colorado, USA, 17-18 y after forests were managed for timber.* Forest structure significantly altered the composition and chemical signature of plant communities. Previously managed stands contained lower density of overstory trees and higher ground cover compared to paired reference stands. Foliar phenolic concentration of several species was negatively related to basal area of overstory trees. Furthermore, reductions in stand density increased total foliar phenolic:nitrogen ratios in some species, suggesting that gap formation may drive long-term changes in litter quality. Despite significant changes in forest structure, reductions in stand density did not leave a strong legacy in surface soil properties, likely due to the integrity of soil organic matter reserves.* Changes in forest structure associated with past management has left a long-term impact on plant communities but has only subtly altered soil nutrient cycling, possibly due to trade offs between litter decomposability and microclimate associated with reductions in canopy cover.", "keywords": ["cycle de l'azote du sol", "0106 biological sciences", "biog\u00e9ochimie", "biogeochemistry<br>---<br>chimie foliaire", "densit\u00e9 du peuplement", "foliar chemistry", "soil nitrogen cycling", "stand density", "phenolic", "[SDV.SA.SF] Life Sciences [q-bio]/Agricultural sciences/Silviculture", " forestry", "15. 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