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87 results for “cascade effects”
Data from: Cascading effects of grazing on predatory arthropod and parasitoid densities
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Data from: Cascading effects of induced terrestrial plant defenses on aquatic and terrestrial ecosystem function
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Data from: Cascading ecological effects of landscape moderated arthropod diversity
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Data from: Cascading effects of predator activity on tick-borne disease risk
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Data from: Cascading effects of pre-adult survival on sexual selection
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Cascading effects of algal warming in a freshwater community
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Data from: Cascading effects of forested area and isolation on seed dispersal effectiveness of rodents on subtropical islands
1. Habitat loss and fragmentation often leads to defaunation of large-bodied mammals, and their loss could trigger release from top-down control or food resource competition for small mammal seed dispersers, which in turn may affect the effectiveness of seed dispersal by altering the number of dispersed seeds or the manner in which they are dispersed. Although rodents are primary seed dispersers in habitat subjected to defaunation, changes in seed dispersal effectiveness of rodents along mammalian defaunation gradients, and empirical support for mechanisms underlying alteration of this ecological process, are unclear. 2. We assessed the direct and indirect effects of forested area and isolation on seed dispersal effectiveness of rodents on 21 study islands with varying levels of defaunation in the Thousand Island Lake, China. We used camera sampling, live traps, and semi-quantitative acorn counts to assess occurrence of large-bodied mammal species, relative abundance of small rodent species, and seed crop size, respectively. Seed dispersal, post-dispersal seed survival, seedling emergence, and seedling survival were estimated by tracking fates of tagged acorns and by planting acorns in exclosures. 3. Forested area had positive indirect effects on seed dispersal effectiveness through defaunation and rodent competition for acorns, whereas isolation had negative direct and weaker positive indirect effects on seed dispersal effectiveness mediated by loss of large-bodied mammals and rodent competition for acorns. Loss of large-bodied mammals negatively affected seed dispersal effectiveness indirectly by virtue of its impact on rodent competition for acorns. Seed dispersal effectiveness exhibited a unimodal relationship with intensity of rodent competition for acorns, peaking at intermediate levels. 4. Synthesis. Indirect effects of island attributes mediated by defaunation of large-bodied mammals on small or isolated islands appear to drive altered competition for food among rodents and decreased seed dispersal effectiveness. Altered interactions between acorns and their rodent consumers/dispersers can substantially affect oak population demography in the Thousand Island Lake system. More broadly our findings highlight the importance to the seed dispersal process of multiple interwoven effects between habitat fragmentation and defaunation of large-bodied mammals.
Data from: Fear mediates trophic cascades: nonconsumptive effects of predators drive aquatic ecosystem function
Predators control prey populations and influence communities and the functioning of ecosystems through a combination of consumptive and nonconsumptive effects. These effects can be locally confined to one ecosystem but can also be extended to neighboring ecosystems. In this study, we investigated the nonconsumptive effects of terrestrial avian predators on the communities of aquatic invertebrates inhabiting bromeliads and on the functioning of these natural ecosystems. Bromeliads with stuffed birds placed nearby showed a decrease in aquatic damselfly larvae abundance and biomass, and we can infer that these changes were caused by antipredator responses. These larvae, which are top predators in bromeliad ecosystems, changed the composition of the entire aquatic invertebrate community. While total species richness, mesopredator richness, and shredder abundance increased in the presence of birds, scraper biomass decreased, possibly as a consequence of the increase in mesopredator richness. High scraper biomass in the absence of birds may have accelerated detrital decomposition, making more nutrients available for bromeliads, which grew more. These results show that nonconsumptive effects triggered by terrestrial predators can cascade down to lower trophic levels and dramatically affect the functioning of aquatic ecosystems, which can in turn alter nutrient provision to terrestrial ecosystems.
Data from: Cascading effects of host plant inbreeding on the larval growth, muscle molecular composition, and flight capacity of an adult herbivorous insect.
A primary function of adult winged insects is dispersal. Limiting larval dietary intake (partial starvation) has been shown to affect the flight muscle metabolism of adult moths reared on artificial diet, but a more ecologically relevant question is whether natural variation in host plant quality can lead to differences in the flight capacity of adult insects. Recent studies have shown that inbreeding compromises plant anti-herbivore defenses. We created inbred and outbred progeny from locally collected horsenettle (Solanum carolinense L.) and examined how host plant inbreeding affects the growth, development, and flight muscle physiology of tobacco hornworm (Manduca sexta L.), a specialist herbivore on Solanaceae. We tested the hypothesis that within population genetic variation in host plant quality, resulting from inbreeding, can create significant changes to the larval development and flight physiology of an adult insect. We found that Manduca larvae reared on inbred horsenettle plants grew faster and developed into larger pupae compared to larvae reared on outbred plants. Adult flight metabolic rate was greater in adults reared on inbred plants compared to outbred plants, and this elevation was independent of body mass when we excluded one plant family that produced small, low metabolic rate moths regardless of breeding regime. Differences in mass-specific flight metabolism were associated with changes in alternative splicing of Troponin t, a flight muscle protein that regulates muscle contraction. These results show that host plant inbreeding can create effects that cascade through larval and pupal development to affect dispersal-related traits of the adult stage. Hence, plant inbreeding may also impact herbivore population dynamics, particularly their ability to spread away from, and possibly into, isolated patches of inbred plants creating increased herbivore pressure on these plant populations. More generally, our findings reveal that changes in population biology at one trophic level can affect the metabolic physiology and flight capacity of an animal at a higher trophic level.
Effect of cascade overlap and C15 clusters on the damage evolution in Fe: An OKMC study
<p>The Cascade-OKMC dataset consists of a collection of text-based files that correspond to cascade simulations on Fe. These simulations were conducted using Object Kinetic Monte Carlo (OKMC) with the MMonCa code..</p> <p> </p> <p><strong>Cascade-OKMC Dataset Structure</strong></p> <p>There are four folders related to the four "Cases" mentioned in the paper: “Case1”, “Case2”, “Case3”, and “Case4”. For each case, there are four subfolders, each named according to the duration time between each cascade. Inside each subfolder, there are between 9-10 txt files that represent the number of different defects as a function of the number of cascades. Please refer to the readme file, which explains which column is related to which kind of properties. Additionally, you can find the input file (input.mc) and output files (lattice.xyz and MmonCa.log) of the MmonCa code for one of the simulations by inserting the last cascade. There is also a folder named “S-Iron” for implementing C15 that you should replace in the source code of MmonCa with the same name. There is a folder named "movie" which contains files related to the simulation visualization. Please refer to the readme file for information about the movie</p> <p><strong>Cascade-OKMC Dataset Description</strong></p> <ul> <li>Paper: A. Esfandiarpour, J. Byggmastar, J. P. Balbuena, M. J. Caturla, K. Nordlund and F. Granberg “Effect of cascade overlap and C15 clusters on the damage evolution in Fe: An OKMC study” , Materialia, vol. 21, pp. 101344, March. 2022</li> </ul> <p> </p> <p> </p> <ul> <li>Contact: amin.esfandiarpour@ncbj.gov.pl </li> </ul> <p> </p> <p>Am.efandiyarpour@gmail.com</p>
Data from: Contrasting effects of aquatic subsidies on a terrestrial trophic cascade
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Data from: Fear mediates trophic cascades: nonconsumptive effects of predators drive aquatic ecosystem function
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Data from: Mismatch between fishway operation and timing of fish movements: a risk for cascading effects in partial migration systems
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Data from: Cascading effects of belowground predators on plant communities are density-dependent
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Data from: Cascading effects of forested area and isolation on seed dispersal effectiveness of rodents on subtropical islands
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Data from: Spatially cascading effect of perturbations in experimental meta-ecosystems
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Data from: Cascading effects of host plant inbreeding on the larval growth, muscle molecular composition, and flight capacity of an adult herbivorous insect.
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Data from: Cascading effects of changes in land use on the invasion of the walnut Juglans regia in forest ecosystems
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Effect of the p38 mitogen-activated protein kinase signaling cascade on radiation biodosimetry
GEO Series GSE184361. Mus musculus. 30 samples. Type: Expression profiling by array.
Effect of VirR/VirS-VR-RNA regulatory cascade on the expression of chromosomal genes of Clostridium perfringens
GEO Series GSE12833. Clostridium perfringens str. 13. 6 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.