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76 results for “nitrogen enrichment”
Extraradical hyphae exhibit more plastic nutrient-acquisition strategies than roots under nitrogen enrichment in ectomycorrhiza-dominated forests
<p>Ectomycorrhizal (ECM) functional traits related to nutrient acquisition are impacted by nitrogen (N) deposition. However, less is known about whether these nutrient-acquisition traits associated with roots and hyphae differentially respond to increased N deposition in ECM-dominated forests with different initial N status. We conducted a chronic N addition experiment (25 kg N ha-1 yr-1) in two ECM-dominated forests with contrasting initial N status, i.e. a <em>Pinus armandii</em> forest (with relatively low N availability) and a <em>Picea asperata</em> forest (with relatively high N availability), to assess nutrient-mining and -foraging strategies associated with roots and hyphae under N addition. We show that nutrient-acquisition strategies of roots and hyphae differently respond to increased N addition. Root nutrient-acquisition strategies showed a consistent response to N addition, regardless of initial forest nutrient status, shifting from organic N mining toward inorganic N foraging. In contrast, the hyphal nutrient-acquisition strategy showed diverse responses to N addition depending on initial forest N status. In the <em>Pinus armandii </em>forest, trees increased belowground carbon (C) allocation to ECM fungi thus enhancing hyphal N-mining capacity under increased N availability. By comparison, in the <em>Picea asperata</em> forest, ECM fungi enhanced both capacities of P foraging and P mining in response to N-induced P limitation. In conclusion, our results demonstrate that ECM fungal hyphae exhibit greater plasticity in nutrient-mining and -foraging strategies than roots do in response to changes in nutrient status induced by N deposition. This study highlights the importance of ECM associations in tree acclimation and forest function stability under changing environments.</p>
Data from: Host plant height explains the effect of nitrogen enrichment on arbuscular mycorrhizal fungal communities
<p><span>Nitrogen (N) enrichment is widely known to affect the root-associated arbuscular mycorrhizal fungal (AMF) community in different ways, for example, via altering soil properties and/or shifting host plant functional traits. However, empirical knowledge of their relative importance is still lacking. </span><span>Using a long-term N addition experiment, we measured the AMF community taxonomic and phylogenetic diversity at the single plant species (roots of 15 plant species) and plant community (mixed roots) levels. We also measured four functional traits of 35 common plant species along the N addition gradient. </span></p> <p><span>We found divergent responses of AMF diversity to N addition for host plants with different innate heights (i.e., plant natural height under unfertilized treatment). Furthermore, our data showed that species-specific responses of AMF diversity to N addition were negatively related to the change in maximum plant height. When scaling up to the community level, N addition affected AMF diversity mainly by increasing the maximum plant height, rather than altering soil properties.</span></p> <p><span>Our results highlight that </span><span>plant height</span><span> drives the AMF community dynamics under nitrogen enrichment at both species and community levels, thus providing important implications for understanding the response of AMF diversity to anthropogenic nitrogen deposition.</span></p>
Phenological and physiological advantages of invasive annuals are strengthened by nitrogen enrichment
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Data from: Nitrogen enrichment alters multiple dimensions of grassland functional stability via changing compositional stability
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Nitrogen enrichment stimulates wetland plant responses whereas salt amendments alter sediment microbial communities and biogeochemical responses
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Data from: Nitrogen enrichment accelerates mangrove range expansion in the temperate-tropical ecotone
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Data from: Contrasting impacts of nitrogen enrichment on soil nematode diversity in natural and managed ecosystems
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Decomposition disentangled: a test of the multiple mechanisms by which nitrogen enrichment alters litter decomposition
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High nitrogen enrichment buffers plant photosynthesis against herbivory damage
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Extraradical hyphae exhibit more plastic nutrient-acquisition strategies than roots under nitrogen enrichment in ectomycorrhiza-dominated forests
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Trophic regulation of soil microbial biomass under nitrogen enrichment: A global meta-analysis
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Functional traits explain the consistent resistance of biodiversity to plant invasion under nitrogen enrichment
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More soil organic carbon is sequestered through the mycelium-pathway than through the root-pathway under nitrogen enrichment in an alpine forest
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Decoupled responses of above- and below-ground beta-diversity to nitrogen enrichment in a typical steppe
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Data from: Nitrogen enrichment promotes isopods through reduced carbon and nitrogen stoichiometric mismatch with understory plants
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Data from: Soil fungi underlie a phylogenetic pattern in plant growth responses to nitrogen enrichment
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Nitrogen and phosphorus enrichment differentially affect grassland ecosystem functioning via multi-trophic pathways
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Nitrogen enrichment drives accelerative effect of soil heterogeneity on the flowering phenology of a dominant grass
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Data from: Host plant height explains the effect of nitrogen enrichment on arbuscular mycorrhizal fungal communities
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Data from: Precipitation and nitrogen enrichment impact carbon exchange and stability: From antagonism to synergy with increasing shrub encroachment
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Allen Brain Atlas
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The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
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