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32 results for “nutrient composition”
Data from: Soil nutrients and dispersal limitation shape compositional variation in secondary tropical forests across multiple scales
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Data from: CO2 alters community composition and response to nutrient enrichment of freshwater phytoplankton
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The impacts of nutrient supply and imbalance on subcontinental co-occurrence networks and metacommunity composition of stream algae
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Data from: Grazing-induced shifts in community functional composition and soil nutrient availability in Tibetan alpine meadows
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Data from: Resource composition mediates the effects of intraspecific variability in nutrient recycling on ecosystem processes
Despite the growing evidence for individual variation in trophic niche within populations, its potential indirect effects on ecosystem processes remains poorly understood. In particular, few studies have investigated how intraspecific trophic variability can modulate the effects of consumers on ecosystems through potential changes in nutrient excretion rates. Here, we first quantified the level of intraspecific trophic variability in 11 wild populations of the omnivorous fish Lepomis gibbosus. Outputs from stomach content and stable isotope analyses revealed that the degree of trophic specialization and trophic positions were highly variable between and within these wild populations. There was intrapopulation variation in trophic position of more than one trophic level, suggesting that individuals consumed a range of plant and animal resources. We then experimentally manipulated intraspecific trophic variability to assess how it can modulate consumer-mediated nutrient effects on relevant processes of ecosystem functioning. Specifically, three food sources varying in nutrient quality (e.g. plant material, macro-invertebrate and fish meat) were used individually or in combination to simulate seven diet treatment. Results indicated that intraspecific variability in growth and nitrogen excretion rates were more related to the composition of the diet rather than the degree of specialization, and increased with the trophic position of the diet consumed. We subsequently used microcosms and showed that critical ecosystem functions, such as primary production and community respiration, were affected by the variability in excretory products, and this effect was biomass-dependent. These results highlight the importance of considering variation within species to better assess the effects of individuals on ecosystems and, more specifically, the effects of consumer-mediated nutrient recycling because the body size and the trophic ecology of individuals are affected by a large spectrum of natural and human-induced environmental changes.
Nutrient Support to Body Composition and Healthy Ageing
ClinicalTrials.gov study NCT02529124. IPD Sharing: Not stated. Countries: 0. Publications: 2.
Evaluation of the Nutrients Composition of Breast Milk of Chinese Lactating Mothers and Their Nutrition Intake
ClinicalTrials.gov study NCT01971671. IPD Sharing: Not stated. Countries: 1. Publications: 2.
Data from: Resource composition mediates the effects of intraspecific variability in nutrient recycling on ecosystem processes
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Nutrient Profiling and Bio-efficacy of Wheat-Barley Composite Flour in Type-2 Diabetes a in Randomized Control Clinical Trial
ClinicalTrials.gov study NCT04658264. IPD Sharing: NO. Countries: 1. Publications: 0.
Nutrient enrichment changes species composition, taxonomic and functional diversity in a global biodiversity hotspot
<p>This data set was presented in the article "Nutrient enrichment changes species composition, taxonomic and functional diversity in a global biodiversity hotspot", by Castro and collaborators. </p><p>We collected plant traits from a Brazilian savanna known as Cerrado. </p>
Microbial community composition in sediments resists perturbation by nutrient enrichment
GEO Series GSE25227. Bacteria; unidentified; uncultured bacterium. 48 samples. Type: Other.
Impacts of invasive Australian acacias on soil bacterial community composition, microbial enzymatic activities, and nutrient availability in fynbos soils
<p>Invasive nitrogen-fixing plants often impact the soils they invade, notably through changes in soil chemistry and microbial community composition, which in turn could lead to alterations in soil functionality. We aimed to determine the impacts that invasive Australian <i>Acacia </i>trees have on soil chemistry and function (carbon, nitrogen, and phosphorus cycling) in South Africa's Core Cape Subregion, and whether any differences in soil function are linked to differences in soil chemical properties and bacterial community composition between neighbouring acacia-invaded and uninvaded sites. We do so by using Next Generation Sequencing (NGS) methods together with soil chemistry and soil enzyme functioning profiles. Acacias significantly increased levels of soil nitrogenous compounds (NO<sub>3</sub><sup>-</sup>, NH<sub>4</sub><sup>+</sup>, and total N), C, and pH. Acacias also significantly elevated microbial phosphatase activity, but not β-glucosidase, while having contrasting effects on urease. Acacia-induced changes in soil chemical properties were correlated with changes in enzyme activities for both urease and phosphatase. Changes in soil bacterial community composition due to the presence of invasive acacias were also correlated with phosphatase enzymatic activity. While we found evidence for acacias altering soil function by changing soil chemical properties and bacterial community composition, the legume-soil feedbacks underlying these impacts appear to be context specific.</p>
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
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.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.