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.
117
datasets available to search
ShareScore release 0.9.0
Dataset results
117 results for “competitive interactions”
Data from: Mycorrhizal-herbivore interactions and the competitive release of subdominant tallgrass prairie species
<p>Plant-microbial-herbivore interactions play a crucial role in the structuring and maintenance of plant communities and biodiversity, yet these relationships are complex. In grassland ecosystems, herbivores have the potential to greatly influence the survival, growth, and reproduction of plants. However, few studies examine interactions of above- and belowground grazing and AM mycorrhizal symbiosis on plant community structure. We established experimental mesocosms containing an assemblage of eight tallgrass prairie grass and forb species in native prairie soil, maintained under mycorrhizal and nonmycorrhizal conditions, with and without native herbivorous soil nematodes, and with and without grasshopper herbivory. Using factorial analysis of variance and principal component analysis, we examined: a) the independent and interacting effects of above- and belowground herbivores on AM symbiosis in tallgrass prairie mesocosms, b) independent and interacting effects of above- and belowground herbivores and mycorrhizal fungi on plant community structure, and c) potential influences of mycorrhizal responsiveness of host plants on herbivory tolerance, and concomitant shifts in plant community composition. Treatment effects were characterized by interactions between AM fungi and both aboveground and belowground herbivores, while herbivore effects were additive. The dominance of mycorrhizal-dependent C<sub>4</sub> grasses in the presence of AMF symbiosis was increased (<em>p</em> < 0.0001) by grasshopper herbivory but reduced (<em>p</em> < 0.0001) by nematode herbivory. Cool-season C<sub>3</sub> grasses exhibited a competitive release in the absence of AMF symbiosis but this effect was largely reversed in the presence of grasshopper herbivory. Forbs showed species-specific responses to both AM fungal inoculation and the addition of herbivores. Biomass of the grazing-avoidant, facultatively mycotrophic forb <em>Brickellia eupatorioides</em> increased (<em>p</em> < 0.0001) in the absence of AMF symbiosis and with grasshopper herbivory, while AMF-related increases in the aboveground biomass of mycorrhizal-dependent forbs <em>Rudbeckia hirta</em> and <em>Salvia azurea</em> were eradicated (<em>p</em> < 0.0001) by grasshopper herbivory. In contrast, nematode herbivory enhanced (<em>p</em> = 0.001) the contribution of <em>Salvia azurea</em> to total biomass.</p> <p><em>Synthesis</em>: Our research indicates that AM symbiosis is the key driver of the dominance of C<sub>4</sub> grasses in the tallgrass prairie, with foliar and root herbivory being two mechanisms for the maintenance of plant diversity.</p>
ROS-Specific Huntingtin Interactions: Competition of huntingtin PAR binding by PBM3 peptide
<p>Attempts to use the PBM3 peptide in a competition assay to measure the on-off rates of huntingtin PAR binding.</p>
Climate, inter-serotype competition and arboviral interactions shape Dengue dynamics in Thailand
Open the record for dataset details and reuse information.
Predicting the competitive interactions and trophic niche consequences of a globally invasive fish with threatened native species
<p>1. Novel trophic interactions between invasive and native species potentially increase levels of inter-specific competition in the receiving environment. However, theory on the trophic impacts of invasive fauna on native competitors is ambiguous, as while increased inter-specific competition can result in the species having constricted and diverged trophic niches, the species might instead increase their niche sizes, especially in omnivorous species.</p> <p>2. The competitive interactions between an omnivorous invasive fish, common carp Cyprinus carpio, and a tropically analogous native and threatened fish, crucian carp Carassius carassius, were tested using comparative functional responses (CFRs). A natural pond experiment then presented the species in allopatry and sympatry, determining the changes in their trophic (isotopic) niche sizes and positions over four years. These predictive approaches were complemented by assessing their trophic relationships in wild populations.</p> <p>3. CFRs revealed that compared to crucian carp, carp had a significantly higher maximum consumption rate. Coupled with a previous cohabitation growth study, these results predicted that competition between the species is asymmetric, with carp the superior competitor.</p> <p>4. The pond experiment used stable isotope metrics to quantify shifts in the trophic (isotopic) niche sizes of the fishes. In allopatry, the isotopic niches of the two species were similar sized and diverged. Conversely, in sympatry, carp isotopic niches were always considerably larger than those of crucian carp and were strongly partitioned. Sympatric crucian carp had larger isotopic niches than allopatric conspecifics, a likely response to asymmetric competition from carp. However, carp isotopic niches were also larger in sympatry than allopatry. In the wild populations, the carp isotopic niches were always larger than crucian carp niches, and were highly divergent.</p> <p>5. The superior competitive abilities of carp predicted in aquaria experiments were considered to be a process involved in sympatric crucian carp having larger isotopic niches than in allopatry. However, as sympatric carp also had larger niches than in allopatry, this suggests other ecological processes were also likely to be involved, such as those relating to fish prey resources. These results highlight the inherent complexity in determining how omnivorous invasive species integrate into food-webs and alter their structure.</p>
Overgrowth competition or facilitation from cushion plants: Implication for the role of plant-plant interactions
<p>Our data reports the annual growth and age of the shrub <em>Caragana versicolor</em> overgrown or free of the cushion plant <em>Thylacospermum ceaspitosum</em>.<span> The observations and sampling were performed at ~5000 m.a.s.l., on the East facing slope of the Korzok range, on the North-Eastern side of Lake Tso Moriri above Korzok village (4522 m a.s.l.). </span><span>Our study demonstrates that the growth of </span><em>Caragana versicolor</em> is repressed by the competitive effect of the cushion plant <em>Thylacospermum ceaspitosum</em>, and shows no evidence of facilitation between the two co-occurring species.</p>
Data from: The interacting influences of competition, composition, and diversity determine successional community change
<p>Community change is one of the few constants in nature, and the balance of mechanisms influencing this change is central to understanding the structure and functioning of communities and ecosystems. Newly established communities undergo succession and can change in diversity and composition as local environmental change, interspecific interactions, and immigration play out over time. Understanding the influence of initial conditions and priority effects (long-term consequences of the initial community composition and species identity) on community change is critically important for both evaluating ecological theory and predicting restoration outcomes. </p> <p>Here I evaluate how initial experimental conditions in 2012, such as initial sown species richness, phylogenetic diversity, and early biomass production, along with priority effects caused by the identity of sown species, influence subsequent plant community composition and the number of colonizing species after nine years of uninterrupted natural colonization. </p> <p>I found that sown phylogenetic diversity (measured as mean pairwise distance) indirectly affected the number of colonizing species by increasing biomass production early on and plots with more biomass in 2012 were colonized by fewer species. Individual species influenced the number of colonizing species with taller species reducing the number of colonists and some shorter species increasing the number of colonists. </p> <p><em><strong>Synthesis</strong></em>: Taken together, these results indicate that initial composition influences the number of colonizing species via community-wide competition. These findings suggest that restoration outcomes can be greatly influenced by decisions about sown species composition and early management practices.</p>
Data from: Competitive interactions among Gymnogyps californianus (California Condor)and other avian scavengers in southern Utah
Open the record for dataset details and reuse information.
Data from: A meta-analysis of plant interaction networks reveals competitive hierarchies as well as facilitation and intransitivity
Open the record for dataset details and reuse information.
Data from: The interacting influences of competition, composition, and diversity determine successional community change
Open the record for dataset details and reuse information.
Data from: Mycorrhizal-herbivore interactions and the competitive release of subdominant tallgrass prairie species
Open the record for dataset details and reuse information.
Data from: Shifts in phenological mean and synchrony interact to shape competitive outcomes
Open the record for dataset details and reuse information.
Data from: Reproductive interference and fecundity affect competitive interactions of sibling species with low mating barriers: experimental and theoretical evidence
Open the record for dataset details and reuse information.
Data from: Condition-dependent interaction between mating success and competitive fertilization success in Drosophila melanogaster
Open the record for dataset details and reuse information.
Are competitive interactions between aphid clones mediated by facultative endosymbionts?
Open the record for dataset details and reuse information.
Fire, grazers and browsers interact with grass competition to determine tree establishment in an African savanna
Open the record for dataset details and reuse information.
The effects of microplastics on crop variation depend on polymer types and their interactions with soil nutrient availability and weed competition
Open the record for dataset details and reuse information.
Data from: Interactive effects of warming and competition do not limit the adaptive plastic response to drought in populations of a Mediterranean plant
Open the record for dataset details and reuse information.
Overgrowth competition or facilitation from cushion plants: Implication for the role of plant-plant interactions
Open the record for dataset details and reuse information.
Dietary morphology of two island-endemic murine rodent clades is consistent with persistent, incumbent-imposed competitive interactions
Open the record for dataset details and reuse information.
Data from: Competition and soil-microbe mediated interactions following dieback of a dominant wetland plant
Open the record for dataset details and reuse information.
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.