Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
671
datasets available to search
ShareScore release 0.9.0
Dataset results
671 results for “mediating effect”
Data from: Bottom-up trait-mediated indirect effects decrease pathogen transmission in a tritrophic system
Open the record for dataset details and reuse information.
Variable strength of predator-mediated effects on species occurrence in an arctic terrestrial vertebrate community
Open the record for dataset details and reuse information.
Tree diversity effects on litter decomposition are mediated by litterfall and microbial processes
Open the record for dataset details and reuse information.
Shifts in plant composition mediate grazing effects on carbon cycling in grasslands
Open the record for dataset details and reuse information.
Changes in species composition mediate direct effects of climate change on future fire regimes of boreal forests in northeastern China
Open the record for dataset details and reuse information.
Trait mediated effects of anthropogenic noise on bird behavior and fitness
Open the record for dataset details and reuse information.
Environmental stoichiometry mediates phytoplankton diversity effects on communities’ resource use efficiency and biomass
Open the record for dataset details and reuse information.
Direct effects and prey-mediated effects of global change in projections of early life stages of pelagic predators
Open the record for dataset details and reuse information.
Functional composition of plant communities mediates biomass effects on ecosystem service recovery across an experimental dryland restoration network
Open the record for dataset details and reuse information.
Multiple dimensions of biodiversity mediate effects of temperature on invertebrate herbivory in a montane grassland
Open the record for dataset details and reuse information.
Vasoactive intestinal peptide as a mediator of the effects of a supergene on social behavior
Open the record for dataset details and reuse information.
Data from: Indirect effects of habitat amount mediated by habitat configuration determine bat diversity at the landscape-scale in Peninsular Malaysia
Open the record for dataset details and reuse information.
Risk of predation increases susceptibility to parasitism via trait-mediated indirect effects
Open the record for dataset details and reuse information.
Date from: Top-down effects from parasitoids may mediate plant defense and plant fitness
<ol> <li>Plants face many environmental stresses that can impact the<span>ir </span><span><span>survival</span></span><span>, developm</span>ent, and fitness. Insects are the most diverse, abundant and threatening herbivores in nature. As a consequence, plants produce direct chemical and physical defenses to reduce herbivory. They also release volatiles to recruit natural enemies that indirectly protect them from herbivory. The recruitment of parasitic wasps can benefit plant fitness because they ultimately kill their insect hosts.</li> <li>Recently, studies showed that parasitoids can indirectly mediate plant defenses by modulating herbivore oral secretions. In addition to the direct benefits of parasitoids in terms of reducing herbivore survival, we tested if the reduction in induced defenses by parasitized caterpillars compared to non-parasitized caterpillars may reduce the costs associated with defense expression.</li> <li>We provide evidence that tomato plants treated with saliva from parasitized caterpillars have significantly higher fitness parameters including increased flower numbers (16.3%) and heavier fruit weight (15%), compared to plants treated with saliva from non-parasitized caterpillars. Since plants were grown without actual herbivores, the higher values for these fitness parameters were due to lower costs of induced defenses and not due to reduced herbivory by parasitized caterpillars. Furthermore, the resulting seed germination time was shorter and the germination rate was higher when the maternal plants were previously exposed to parasitized herbivore treatment compared to control (non-treated) plants.</li> <li>Overall, application of saliva did not result in transgenerational priming of offspring defense responses. However, offspring of parents exposed to caterpillar saliva had lower constitutive levels and higher induced levels of trypsin inhibitor than offspring from unexposed parents.</li> <li>This study shows that the saliva of parasitized caterpillars can modulate plant defenses and further demonstrates that the lower induction of plant defenses is associated with elevated plant fitnes<span>s </span><span><span>in the absence of herbivore feeding</span></span><span>, sugge</span>sting that induced plant defenses are costly. </li> </ol>
Climate and soil mediate the effects of liana density on forest dynamics
<p>Forest community dynamics is a topic of great interest in times when the global carbon budget is a widespread concern due to climate change. Among its effects, longer periods of drought and liana proliferation, coupled with land-use change, may endanger tropical forest carbon sinks. Here, in a 10.3 ha sampling of six Atlantic semideciduous forests, we investigated the effects of liana crown occupancy and large-stemmed lianas, as well as their interactions with climate and soil, on forest dynamics. We expected that harsh environmental conditions would enhance the negative effects of lianas on forest productivity. Our hypothesis was corroborated by the findings that the positive effect of lianas on tree mortality increases under drier conditions, as well as their negative effect on tree recruitment. In addition, liana crown occupancy was the best predictor of net above-ground woody biomass productivity, which decreases as liana crown occupancy increases. Our study provides additional evidence of indirect climate change impacts on the tropical forest carbon sink by increasing the negative effects of liana crown occupancy on tree biomass productivity.</p>
Data from: The effect of keystone individuals on collective outcomes can be mediated through interactions or behavioral persistence
Collective behavior emerges from interactions among group members who often vary in their behavior. The presence of just one or a few keystone individuals, such as leaders or tutors, may have a large effect on collective outcomes. These individuals can catalyze behavioral changes in other group members, thus altering group composition and collective behavior. The influence of keystone individuals on group function may lead to trade-offs between ecological situations, because the behavioral composition they facilitate may be suitable in one situation but not another. We use computer simulations to examine various mechanisms that allow keystone individuals to exert their influence on group members. We further discuss a trade-off between two potentially conflicting collective outcomes, cooperative prey attack and disease dynamics. Our simulations match empirical data from a social spider system and produce testable predictions for the causes and consequences of the influence of keystone individuals on group composition and collective outcomes. We find that a group's behavioral composition can be impacted by the keystone individual through changes to interaction patterns or behavioral persistence over time. Group behavioral composition and the mechanisms that drive the distribution of phenotypes influence collective outcomes and lead to trade-offs between disease dynamics and cooperative prey attack.
Male and female genotype and a genotype-by-genotype interaction mediate the effects of mating on cellular but not humoral immunity in female decorated crickets
<p>Sexually antagonistic coevolution is predicted to lead to the divergence of male and female genotypes related to the effects of substances transferred by males at mating on female physiology. The outcome of mating should thus depend on the specific combination of mating genotypes. Although mating has been shown to influence female immunity in diverse insect taxa, a male-female genotype-by-genotype effect on female immunity post-mating remains largely unexplored. Here, we investigate the effects of mating on female decorated cricket baseline immunity and the potential for a male-by-female genotype interaction affecting this response. Females from three distinct genotypic backgrounds were left unmated or singly mated in a fully reciprocal design to males from the same three genotypic backgrounds. Hemocytes and hemocyte microaggregations were quantified for female cellular immunity, and phenoloxidase, involved in melanization, and antibacterial activity for humoral immunity. In this system, female cellular immunity was more reactive to mating, and mating effects were genotype dependent. Specifically, for hemocytes, a genotype-mating status interaction mediated the effect of mating per se, and a significant male-female genotype-by-genotype interaction determined hemocyte depletion post-mating. Microaggregations were influenced by the female's genotype or that of her mate. Female humoral immune measures were unaffected, indicating the propensity for post-mating effects on female is dependent on the component of baseline immunity. The genotype-by-genotype effect on hemocytes supports a role of sexual conflict in post-mating immune suppression, suggesting divergence of male genotypes with respect to modification of female post-mating immunity, and divergence of female genotypes in resistance to these effects.</p>
Aridity mediates biocrusts' effects on soil multifunctionality in northern China
<p>1. Soil biocrusts, as the fundamental component of drylands, alter soil microbial and plant community compositions, thus profoundly affecting soil multifunctionality (SMF). Biocrust development regulates microbial composition and eco-physiological effects, but there have been limited assessments regarding how biocrust development impacts SMF through microbial communities and plant species.</p> <p>2. We investigated the geographic patterns of plant diversity, soil bacterial diversity, biocrust development, and SMF along an aridity gradient, spanning 2,200 km in northern China, and evaluated how biocrust development modulated multiple soil functions related to carbon, nitrogen, and phosphorus cycles.</p> <p>3. Plant species richness and SMF decreased linearly with increasing aridity (1-AI), but the relationship of soil bacterial diversity and biocrust development index (BSCDI) with aridity differed between arid region and semi-arid region.</p> <p>4. Plant diversity and soil bacterial diversity increased linearly with BSCDI in arid regions, but decreased linearly with BSCDI in semi-arid regions.</p> <p>5. Both plant species and soil bacterial diversity exerted positive effects on SMF in arid regions, but soil bacterial diversity, rather than plant species, did not explain any variation in SMF in semi-arid regions. Most importantly, biocrust development exerted direct effects on SMF in arid regions, but only indirect effects through changing soil microbial biomass carbon in semi-arid regions.</p> <p>6. Our findings suggest that the effects and influencing pathways of biocrusts on SMF are different between arid and semi-arid regions, these results give a comprehensive view of how biocrust development facilitates soil multifunctionality improvement and ultimately promote a deeper understanding of the dependence of biodiversity-SMF relationship on aridity.</p>
Herbivory of a biocontrol agent on a native plant causes an indirect trait-mediated non-target effect on a native insect
<p>Identifying food web linkages between biocontrol agents of invasive plants and native species is crucial for predicting indirect non-target effects. Biocontrol insects can integrate into food webs within recipient habitats and influence native insects through apparent competition (altering shared natural enemies) or density-mediated exploitation competition (changing density of native plants). However, whether and how trait-mediated exploitation competition (modifying native plant chemical defenses and volatiles profiles) can produce indirect non-target effects remains largely overlooked, despite plant phenotypic responses to insect herbivory being common and widely documented.</p> <p>The beetle <em>Agasicles hygrophila</em> was introduced into China for management of weedy <em>Alternanthera philoxeroides</em>, but it also attacks the native congener <em>A. sessilis</em>, which may have indirect non-target effects on the native beetle <em>Cassida piperata </em>that also feeds on <em>A. sessilis</em>. Here, we examined the relationships among the abundance of <em>A. hygrophila</em> and <em>C. piperata</em>, and <em>A. sessilis</em> coverage in the field. Then, we investigated the impact of <em>A. hygrophila</em> herbivory on <em>C. piperata</em> development and oviposition, as well as<em> A. sessilis</em> primary metabolites and leaf volatiles.</p> <p><em>Cassida piperata</em> abundance was not related to <em>A. sessilis</em> coverage, but <em>C. piperata</em> was less abundant on plants with more<em> A. hygrophila</em> in the field survey and on plants with more prior<em> A. hygrophila</em> damage in the field cage experiment. <em>Cassida piperata </em>development was inhibited by prior <em>A. hygrophila </em>herbivory in bioassays in enemy-free conditions and they preferred to oviposit on <em>A. sessilis </em>plants that had experienced little or no <em>A. hygrophila</em> damage. <em>Agasicles hygrophila</em> herbivory decreased <em>A. sessilis</em> foliar glucose and protein, and substantially changed its leaf volatile blend.</p> <p>Synthesis. Our results show that <em>A. hygrophila</em> has its major indirect non-target effects on <em>C. piperata </em>through trait-mediated exploitation competition, rather than apparent competition or density-mediated exploitation competition. Our results demonstrate a new mechanism for indirect non-target effects of biocontrol agents. Furthermore, our results indicate that minor and temporary negative impacts on non-target plants might propagate to higher trophic levels and such negative impacts can strengthen with increasing intensity of the direct non-target effect.</p>
Calcareous defense structures of prey mediate the effects of predation and biotic resistance towards the tropics
<p><span><span><span><span><span><span><span><span><span><span><span>Aims</span></span></span></span></span></span></span></span></span></span></span></p> <p><span><span><span><span><span><span><span><span><span><span><span>The importance of biotic interactions in creating and maintaining diversity is expected to increase toward low latitudes. However, the way in which predation affects diversity, can depend on how predators mediate competitive interactions and also on defensive traits of prey. Here we assessed the role of physical defences of prey to escape predation and how the importance of predation on community structure and diversity changes across latitude.</span></span></span></span></span></span></span></span></span></span></span></p> <p><span><span><span><span><span><span><span><span><span><span><span>Location</span></span></span></span></span></span></span></span></span></span></span></p> <p><span><span><span><span><span><span><span><span><span><span><span>Six sites, in three regions distributed across 45 degrees of latitude in the Atlantic Ocean: a tropical region in Angola, a subtropical region in Brazil and a temperate region in Wales-UK.</span></span></span></span></span></span></span></span></span></span></span></p> <p><span><span><span><span><span><span><span><span><span><span><span>Methods</span></span></span></span></span></span></span></span></span></span></span></p> <p><span><span><span><span><span><span><span><span><span><span><span>We manipulated predation on marine sessile communities, using exclusion cages and assessed community parameters, including their susceptibility to biological invasion during early and advanced succession.</span></span></span></span></span></span></span></span></span></span></span></p> <p><span><span><span><span><span><span><span><span><span><span><span>Results</span></span></span></span></span></span></span></span></span></span></span></p> <p><span><span><span><span><span><span><span><span><span><span><span>Predation was more intense in the tropics and in advanced communities suggesting that predation effects increase through time. In the tropical region, predators reduced the number of co-occurring species and beta diversity, limited the occurrence of exotic species and promoted a change in the identity of the dominant organisms, replacing soft-bodied organisms with calcified animals. In the subtropical region, predation promoted a similar trait-mediated change in the identity of dominant prey, although it was not strong enough to affect diversity and did not prevent bioinvasion. In the temperate region other processes than predation seem to drive the community organization and resistance to invasion.</span></span></span></span></span></span></span></span></span></span></span></p> <p><span><span><span><span><span><span><span><span><span><span><span>Main conclusions</span></span></span></span></span></span></span></span></span></span></span></p> <p><span><span><span><span><span><span><span><span><span><span><span>Our results support both Biotic Interaction and Biotic Resistance Hypotheses, showing that the importance of predation to biodiversity increases toward the tropics. In addition, where predation is intense, morphological traits of prey drive the final structure and dominance in the community. Our results suggest that physical defences are the main traits preventing predation, perhaps explaining why calcified organisms are among the most common invasive species in coastal habitats.</span></span></span></span></span></span></span></span></span></span></span></p>
ScienceDex guides
Understand access before you commit
These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
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.