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105 results for “Mixture effects”
Data from: Using root traits to understand temporal changes in biodiversity effects in grassland mixtures.
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Interactive effects of tree species mixture and climate on foliar and woody trait variation in a widely distributed deciduous tree
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Effect of recovery period of mixture pasture on cattle behaviour, pasture biomass production, and pasture nutritional value
<p>This document provides the brief description of the statistical analysis for the research article entitled “Effect of recovery period of mixture pasture on cattle behaviour, pasture biomass production, and pasture nutritional value” published at Animal: An International Journal of Animal Bioscience. The study was designed to evaluate three different recovery periods of mixed grasses on the grazing behaviour of heifers, as well as herbage selectivity, herbage yield and nutritional value, <em>in vitro </em>degradability, and<em> </em>CH<sub>4</sub> production. The three pasture recovery periods (RP) of 24, 35 and 46 days were evaluated in six blocks using a randomized block design. At each predetermined recovery period, samples of the pasture were taken before the animals were allowed to graze using the square method. Right after collecting the pasture samples, a group, out of three, of six heifers accessed the pasture during four consecutive hours for grazing simulation and behavioural observations. The three groups of heifers were scheduled to be used in accordance with a systematic distribution and the pre-determined RP. The groups went through all the blocks according to the RP and the 3x3 double Latin Square design. A sample scan from each animal was taken every 10 min for behavioural observations and grazing simulations was taken through the hand-plucking technique. The bite rate of each animal was also measured five times each hour for 30 seconds each, and then one value per group was calculated. Statistical analyses were performed in R Core Team (2018). Additional information is provided in the paper “Effect of recovery period of mixture pasture on cattle behaviour, pasture biomass production, and pasture nutritional value”.</p>
Data from: Landscape-dependent effects of varietal mixtures on insect pest control and implications for farmer profits
<p>Intraspecific plant diversity can significantly impact insect herbivore populations in natural systems. Yet, its role as an insect pest control strategy in agriculture has received less attention, and little is known about which crop traits are important to herbivores in different landscape contexts. Moreover, empirical economic analyses on the cost-effectiveness of varietal mixtures is lacking. We used varietal mixtures of Brassica oleracea crops on working farms to examine how two metrics of intraspecific crop diversity—varietal richness and number of plant colors (color richness)—affect crop damage and the incidence and abundance of two insect pest species, Pieris rapae and Phyllotreta spp. We evaluated the context-dependency of varietal mixtures by sampling early and late season plantings of B. oleracea crops in farms across a gradient of landscape composition. We developed crop budgets and used a net present value analysis to assess the impact of varietal mixtures on input and labor costs, crop revenues, and profit. We found context-dependent effects of varietal mixtures on both pests. In early season plantings, color richness did not affect Phyllotreta spp. populations. However, increasing varietal richness reduced Phyllotreta spp. incidence in simple landscapes dominated by cropland, but this trend was reversed in complex landscapes dominated by natural habitats. In late season plantings, color richness reduced the incidence and abundance of P. rapae larvae, but only in complex landscapes where their populations were highest. Varietal richness had the same effect on P. rapae larvae as color richness. Unexpectedly, we consistently found lower pest pressure and reduced crop damage in simple landscapes. Although varietal mixtures did not affect crop damage, increasing color richness corresponded with increased profits, due to increased revenue and a marginal reduction in labor and input costs. We demonstrate varietal mixtures can significantly impact pest populations, and this effect can be mediated by intraspecific variation in crop color. However, the strength and direction of these effects vary by season, landscape composition, and pest species. The association between varietal color richness and profitability indicates farmers could design mixtures to enhance economic returns. We recommend additional research on the benefits of intraspecific trait variation for farmers.</p>
Data from: Fuel moisture content enhances nonadditive effects of plant mixtures on flammability and fire behavior
Fire behavior of plant mixtures includes a complex set of processes for which the interactive contributions of its drivers, such as plant identity and moisture, have not yet been unraveled fully. Plant flammability parameters of species mixtures can show substantial deviations of fire properties from those expected based on the component species when burnt alone; that is, there are nonadditive mixture effects. Here, we investigated how fuel moisture content affects nonadditive effects in fire behavior. We hypothesized that both the magnitude and variance of nonadditivity in flammability parameters are greater in moist than in dry fuel beds. We conducted a series of experimental burns in monocultures and 2‐species mixtures with two ericaceous dwarf shrubs and two bryophyte species from temperate fire‐prone heathlands. For a set of fire behavior parameters, we found that magnitude and variability of nonadditive effects are, on average, respectively 5.8 and 1.8 times larger in moist (30% MC) species mixtures compared to dry (10% MC) mixed fuel beds. In general, the moist mixtures caused negative nonadditive effects, but due to the larger variability these mixtures occasionally caused large positive nonadditive effects, while this did not occur in dry mixtures. Thus, at moister conditions, mixtures occasionally pass the moisture threshold for ignition and fire spread, which the monospecific fuel beds are unable to pass. We also show that the magnitude of nonadditivity is highly species dependent. Thus, contrary to common belief, the strong nonadditive effects in mixtures can cause higher fire occurrence at moister conditions. This new integration of surface fuel moisture and species interactions will help us to better understand fire behavior in the complexity of natural ecosystems.
A Study to Evaluate How Safe and Effective is the Mixture of Lipiodol® Ultra Fluid and Glue When Used for Embolization Procedures
ClinicalTrials.gov study NCT02625389. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Effect of Oral Administration of a Herbarium Mixture (Guazuma Ulmifolia and Tecoma Stans) on Metabolic Profile in Type 2 Diabetic Patients
ClinicalTrials.gov study NCT03313856. IPD Sharing: NO. Countries: 0. Publications: 14.
Effectiveness Study of Different Local Anesthetic Mixtures
ClinicalTrials.gov study NCT01243112. IPD Sharing: Not stated. Countries: 1. Publications: 0.
The Effect of a Probiotic Mixture in Obese Patients With Irritable Bowel Syndrome
ClinicalTrials.gov study NCT04760353. IPD Sharing: YES. Countries: 1. Publications: 0.
Data from: Landscape-dependent effects of varietal mixtures on insect pest control and implications for farmer profits
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Data from: Fuel moisture content enhances nonadditive effects of plant mixtures on flammability and fire behavior
Open the record for dataset details and reuse information.
Effects of cross-fostering and developmental exposure to mixtures of environmental contaminants on hepatic gene expression in prepubertal 21 days old and adult male Sprague-Dawley rats IV.
GEO Series GSE109016. Rattus norvegicus. 16 samples. Type: Expression profiling by array.
High-throughput transcriptomics screening of mixtures of BPA alternatives reveal additive effects in vitro
GEO Series GSE276869. Homo sapiens. 672 samples. Type: Expression profiling by high throughput sequencing.
Effects of cross-fostering and developmental exposure to mixtures of environmental contaminants on hepatic gene expression in prepubertal 21 days old and adult male Sprague-Dawley rats
GEO Series GSE109019. Rattus norvegicus. 72 samples. Type: Expression profiling by array.
The probiotic mixture VSL#3 has differential effects on intestinal immune parameters in healthy female BALB/c and C57BL/
GEO Series GSE62619. Mus musculus. 40 samples. Type: Expression profiling by array.
Assessment of chemical mixtures and ground water effects on Daphnia magna transcriptomics
GEO Series GSE30163. Daphnia magna. 107 samples. Type: Expression profiling by array.
Effects of cross-fostering and developmental exposure to mixtures of environmental contaminants on hepatic gene expression in prepubertal 21 days old and adult male Sprague-Dawley rats II.
GEO Series GSE109014. Rattus norvegicus. 16 samples. Type: Expression profiling by array.
Effects of cross-fostering and developmental exposure to mixtures of environmental contaminants on hepatic gene expression in prepubertal 21 days old and adult male Sprague-Dawley rats VI.
GEO Series GSE109018. Rattus norvegicus. 8 samples. Type: Expression profiling by array.
Effects of cross-fostering and developmental exposure to mixtures of environmental contaminants on hepatic gene expression in prepubertal 21 days old and adult male Sprague-Dawley rats V.
GEO Series GSE109017. Rattus norvegicus. 16 samples. Type: Expression profiling by array.
Effects of cross-fostering and developmental exposure to mixtures of environmental contaminants on hepatic gene expression in prepubertal 21 days old and adult male Sprague-Dawley rats I
GEO Series GSE109013. Rattus norvegicus. 8 samples. Type: Expression profiling by array.
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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.