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42 results for “biotic effects”
Figure 1 in The effects of abiotic and biotic factors on web-decorating behaviour of an orb-weaving spider, Cyclosa octotuberculata Karsch (Araneae: Araneidae)
Figure 1. Cyclosa octotuberculata and its web decorations. (A) Close-up of female sitting at hub and facing down. (B) Spider on a web without decorations. (C) Spider at hub with a linear plant-detritus (arrows) decoration. (D) Spider at hub with a linear prey-remain (arrow) decoration. (E) Spider with a linear silk decoration. (F) Spider with a linear decoration consisting of moult (arrow), plant detritus and prey remains. (G) Spider at hub with a linear egg-sac (arrow) decoration. (H) Spider on its prey-remain-decorated web without spirals. The scale bars are 10 mm.
Data from: Effects of nitrogen deposition on reproduction in a masting tree: benefits of higher seed production are trumped by negative biotic interactions
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Calcareous defense structures of prey mediate the effects of predation and biotic resistance towards the tropics
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Global quantitative synthesis of effects of biotic and abiotic factors on stemflow production in woody ecosystems
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Data from: A framework for the integrated analysis of the magnitude, selectivity, and biotic effects of extinction and origination
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Data from: Effect of distance to edge and edge interaction on seedling regeneration and biotic damage in tropical rainforest fragments: a long‐term experiment
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Effects of biotic and abiotic stressors on asymmetries and head size in two sympatric lizard species
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Data from: No biotic homogenisation across decades but consistent effects of landscape position and pH on macrophyte communities in boreal lakes
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Data from: Antagonistic biotic interactions mitigate the positive effects of warming on wood decomposition
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Data from: The effects of different cold-temperature regimes on development, growth, and susceptibility to an abiotic and biotic stressor
1. Global climate change is expected to both increase average temperatures as well as temperature variability. 2. Increased average temperatures has led to earlier breeding in many spring-breeding organisms. However, individuals breeding earlier will also face increased temperature fluctuations, including exposure to potentially harmful cold temperature regimes during early developmental stages. 3. Using a model spring-breeding amphibian, we investigated how embryonic exposure to different cold-temperature regimes (control, cold-pulse, and cold-press) affected (1) compensatory larval development and growth, (2) larval susceptibility to a common contaminant, and (3) larval susceptibility to parasites. 4. We found: (1) no evidence of compensatory development or growth, (2) larvae exposed to the cold-press treatment were more susceptible to NaCl at 4-d post-hatching but recovered by 17-d post-hatching, and (3) larvae exposed to both cold treatments were less susceptible to parasites. 5. These results demonstrate that variation in cold-temperature regimes can lead to unique direct and indirect effects on larval growth, development, and response to stressors. This underscores the importance of considering cold temperature variability and not just increased average temperatures when examining the impacts of climate disruption.
Raw data associated to the paper "Analysis of species pair associations combined with functional traits reveals the effects of environmental filtering and biotic interactions in an unmanaged temperate forest"
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Data for: Effects of biotic interactions on plant fecundity depend on spatial and functional structure of communities and time since disturbance
<p><span>Biotic interactions in plant communities affect individual fitness and community dynamics. Interactions between plants vary in space, over time and with organisational complexity. Yet it is challenging to quantify temporal, spatial and functional determinants of different types of interactions between long-lived perennial plant species and their effect on lifetime fecundity. We studied how plant-plant, pollinator- and seed predator-mediated interactions affect year-to-year variation in three fecundity components (cone production, seed set and seed survival) during post-fire recovery. Age-stratified data on the three fecundity components were collected in 19 even-aged communities comprising 20 serotinous <em>Protea </em>shrub species in the South African Fynbos. We analyse data on these fecundity components with neighbourhood models to infer the sign and strength of interactions throughout post-disturbance recovery, the neighbour plant traits that shape them and the spatial scale at which interactions take place. For each fecundity component, these models describe how neighbourhood effects change over time and with spatial distance between plants. For each focal plant, we then predicted neighbourhood effects on individual fecundity components and cumulative reproductive output at different post-fire stand ages. Competitive effects on cone production and seed set increased with post-fire stand age as biomass and floral resources for pollinators build up. In contrast, neighbourhood effects on seed survival were weak throughout post-disturbance recovery. Plant-plant interactions were shaped by neighbour traits related to resource acquisition, whereas animal-mediated interactions depended on neighbour traits related to resource availability for pollinators and seed predators. The spatial scale of the interactions increased from plant-plant over predator-mediated to pollinator-mediated interactions. The joint effect of these interactions on cumulative reproductive output caused the proportion of focal plants experiencing competition to increase with time since fire. We show that temporal changes in biotic interactions throughout post-disturbance recovery of perennial plant communities depend on functional traits and can be integrated to neighbourhood effects on lifetime fecundity. Studying the temporal, spatial and functional determinants of neighbourhood effects on lifetime fecundity is important for predicting not only individual plant fitness, but also population and community dynamics in changing environments. </span></p>
Figure 3. Preventive inhibition growth effect against Botrytis cinerea over grapevine leaves three days after the infection. A in Positioning entomopathogenic nematodes for the future viticulture: exploring their use against biotic threats and as bioindicators of soil health
Figure 3. Preventive inhibition growth effect against Botrytis cinerea over grapevine leaves three days after the infection. A. Destilled water (control treatment). B. Xenorhabdus nematophilus natural products treatment.
Effects of ants on riparian poplars: an ex situ experiment of biotic interaction
<p>Poplars establish on alluvial bars within sand and gravel-bed rivers. Alluvial bars also provide particularly suitable habitats<br> for the proliferation of ants. We hypothesized that ants, by modifying substrate structure and resource availability in fluvial<br> habitats, positively influence poplar growth during its establishment stage. We conducted a preliminary nine-month ex situ<br> greenhouse experiment with one ant species (Lasius niger L.) and six different genotypes of poplar cuttings (Populus nigra<br> L.), both collected on the Garonne River, SW France. Three main treatments: ‘P. nigra alone’, ‘P. nigra without ants and with<br> ant food’ and ‘P. nigra with ants and ant food’ were applied. After one growing season, we tested differences in branching<br> length and biomass of stems, roots and leaves. Certain genotypes showed significant differences in growth, but there were<br> no significant differences in stem length, dry mass of stems and roots between the three treatments. The total biomass of<br> poplars after the first growing season was positively affected by the initial size of the cuttings and was modulated by the<br> genotype independently from the treatments. However, an increased poplar growth for the treatment without ants and with<br> ant food was observed according to significant differences in dry weight of leaves and total biomass (i.e. dry mass of stems,<br> roots and leaves) for the pooled genotypes across treatments. We discuss our results with the aim of serving as a reference<br> for future in situ and ex situ experiments and field measurements exploring interactions between ants and poplars, specifically<br> in riparian ecosystems.en</p>
Effects of Pre-, Pro- & Anti-biotics on Gut Microbiota
ClinicalTrials.gov study NCT01414010. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Probing the Synergistic Effect of Pre-Biotics & Iron Fortificants in Anemic Subjects
ClinicalTrials.gov study NCT03894449. IPD Sharing: UNDECIDED. Countries: 1. Publications: 0.
Data from: Density and biotic interactions modify the combined effects of global and local stressors
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Effects of freshwater salinization and biotic stressors on amphibian morphology
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Data for: Effects of biotic interactions on plant fecundity depend on spatial and functional structure of communities and time since disturbance
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Data from: The effects of different cold-temperature regimes on development, growth, and susceptibility to an abiotic and biotic stressor
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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.