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.
14
datasets available to search
ShareScore release 0.9.0
Dataset results
14 results for “Seed Survival”
The irreplaceable role of surviving megafauna in long-distance seed dispersal: Evidence from an experiment with Neotropical mammals
<p>The downsizing of disperser assemblages by selective defaunation is a worldwide phenomenon thought to have important consequences in animal-dispersed plants. Numerous large-seeded Neotropical plants currently depend on the last megafaunal survivors, the large tapirs <em>Tapirus</em> spp., and medium-sized frugivores. The extent to which medium frugivores are functionally equivalent to tapirs remains unresolved. We combined feeding trials, seed dispersal kernel modeling based on seed retention times and animal movement simulation (Levy walks), and germination experiments in a large-seeded palm to assess the dispersal quality provided by the largest (tapirs) and two medium (foxes and howler monkeys) frugivore species in terms of dispersal distances and gut passage effects on germination. Tapirs retained the seeds in the gut for much longer (mean=221 hours) than howlers (43 h) and foxes (22 h). Median dispersal distance by tapirs (1252 m) was 14 and 40 times larger than that by foxes (88 m) and howlers (31 m), respectively. The seed dispersal kernel of tapirs showed a 5<sup>th</sup> percentile value (291 m) larger than the 95<sup>th</sup> percentiles of foxes (285 m) and howlers (108 m). Manually depulped and gut-passed seeds germinated in similar proportions, showing, respectively, 3.5 and 2.5―2.9 times higher values than intact fruits. Germination probability and seed viability decreased with retention time in howlers' and tapirs' gut, with howlers showing a steeper negative relationship. Such detrimental effect implies a trade-off between germination success and dispersal distance. We conclude that tapirs may not play a unique role in germination enhancement but move seeds much further than medium frugivores, thus playing a critical role as long-distance dispersers of many plants. This study provides important insights on palm–frugivore interactions and the potential consequences for large-seeded plants of losing the last megafaunal representatives in the Neotropics.</p>
The irreplaceable role of surviving megafauna in long-distance seed dispersal: Evidence from an experiment with Neotropical mammals
Open the record for dataset details and reuse information.
Decadal survival of tropical pioneer seeds in the soil seedbank is accompanied by fungal infection and dormancy release
<p>Pioneer trees require high-light environments for successful seedling establishment. Consequently, seeds of these species often persist in the soil seed bank (SSB) for periods ranging from several weeks to decades. How they survive despite extensive pressure from seed predators and soilborne pathogens remains an intriguing question.</p> <p>This study aims to test the hypotheses that decades-old seeds collected from the SSB in a lowland tropical forest remain viable by i) escaping infection by fungi, which are major drivers of seed mortality in tropical soils, and/or ii) maintaining high levels of seed dormancy and seed coat integrity when compared to inviable seeds.</p> <p>We collected seeds of <em>Trema micrantha</em> and <em>Zanthoxylum ekmanii </em>at Barro Colorado Island, Panama, from sites where adult trees previously occurred in the past 30 years. We used carbon dating to measure seed age and characterized seed coat integrity, seed dormancy, and fungal communities.</p> <p>Viable seeds from the SSB ranged in age from 9 to 30 years for <em>T. micrantha</em>, and 5 to 33 years for <em>Z. ekmanii.</em> We found no evidence that decades-old seeds maintain high levels of seed dormancy or seed coat integrity. Fungi were rarely detected in fresh seeds (no soil contact), but phylogenetically diverse fungi were detected often in seeds from the SSB. Although fungal infections were more commonly detected in inviable seeds than in viable seeds, a lack of differences in fungal diversity and community composition between viable and inviable seeds suggested that viable seeds are not simply excluding fungal species to survive long periods in the SSB.</p> <p><em>Synthesis: </em>Our findings reveal the importance of a previously understudied aspect of seed survival, where the impact of seed-microbial interactions may be critical to understand long-term persistence in the SSB.</p>
Data used in the GRL paper titled "Climatology of Tropical Cyclone Seed Frequency and Survival Rate in Tropical Cyclones"
<p>Data used in the GRL paper titled "Climatology of Tropical Cyclone Seed Frequency and Survival Rate in Tropical Cyclones" by Ikehata and Satoh</p> <p>Please download and decompress the zip file. We describe details of this dataset in "readme.txt".</p>
Methods of species pool determination as predictors of survival in seeding and transplanting experiments
<ol> <li><span>Community composition is limited by a species' ability to reach, establish, and survive on a site. Establishment and survival are constrained by both abiotic conditions and biotic interactions that operate together on local scales. They decide which species from the pool will form the community. For this reason, it is very important to clearly define the species pool, against which the community composition is compared. </span></li> <li><span>The effect of biotic and abiotic factors can be assessed experimentally, and the species pool by using estimation methods based on broad-scale observational data. We compared success of five species pool estimation methods in predicting establishment and survival in a seed/transplant addition experiment. </span></li> <li> <span>In four different locations, we added resident and non-resident species to plots with and without competition and</span><span> tested the ability of the species to thrive in both competition-free gaps (constrained mainly by abiotic conditions) and in intact vegetation (complete community filter). In these treatments, we studied the seedling recruitment and survival, and the establishment and survival of pre-grown transplants. The ability of species pool assessment methods to predict species performance in individual treatments was compared. The comparison of results from individual treatments indicates the importance of individual components of the community filter. </span> </li> <li><span>Species pool assessment methods, based on species co-occurrence patterns (Beals index, Favourability, and Unconstrained ordination), were the best predictors of species performance in the intact vegetation but were less successful in the competition-free environment. Methods based on co-occurrence patterns were the most effective for predicting seedling establishment, while seed germination alone and transplant survival were poorly predictable. </span></li> <li><span>The biotic filter was the principal factor defining our community composition, especially for the process of seedling establishment. The roles of biotic and abiotic filters are very difficult to distinguish without an experimental approach and the ratio of their importance changes during plant ontogenesis.</span></li> </ol>
Data from: Canopy seed survival through extreme fire in non-serotinous conifers: An unexpected source of forest resilience
Open the record for dataset details and reuse information.
Decadal survival of tropical pioneer seeds in the soil seedbank is accompanied by fungal infection and dormancy release
Open the record for dataset details and reuse information.
Data from: Seed survival in tropical pioneer trees is unrelated to conspecific distance but linked to fungal infection
Open the record for dataset details and reuse information.
Vacuolar sucrose homeostasis is critical for development, seed properties and survival of dark phases of Arabidopsis
Open the record for dataset details and reuse information.
Methods of species pool determination as predictors of survival in seeding and transplanting experiments
Open the record for dataset details and reuse information.
Data from: Competition, seed dispersal, and hunting: what drives germination and seedling survival in an Afrotropical forest?
Disentangling the contributions of different processes that influence plant recruitment, such as competition and seed dispersal, is important given the increased human-mediated changes in tropical forest ecosystems. Previous studies have shown that seedling communities in an Afro-tropical rainforest in Southeastern Nigeria are strongly affected by the loss of important seed dispersing primates, including Cross River gorillas (Gorilla gorilla diehli), chimpanzee (Pan troglodytes elioti), and drill (Mandrillus leucophaeus). Here we study how germination and survival of tree seedlings are affected by competition and reduced seed-dispersal in three contiguous forest reserves, in Southeastern Nigeria, with similar mature tree species composition and structure. We use an experimental design aimed at manipulating the effect of competition among seedlings in three protected and three hunted sites within the reserves. We use a total of sixty 5×5 m plots of three types: plots cleared of all seedlings, plots selectively cleared of all primate-dispersed seedlings and control plots. All seedlings were identified, measured, assigned to dispersal mode, and tagged, and after one year we evaluated survival, mortality and new recruits. We found that in hunted sites germination of abiotically dispersed species was over four times higher in cleared plots compared to control plots, whereas germination of primate dispersed species was the same, which indicated that dispersal limitation was the dominant force in seedling recruitment in hunted sites. This was supported by the fact that the germination of all dispersal modes in the selectively cleared plots in protected sites was similar to the control plots in the same sites, but germination of abiotically dispersed species was significantly lower than in cleared plots in hunted sites. Competition among seedlings was mostly evident from the fact that 75% more seedlings of primate dispersed species germinated in cleared compared to control plots in protected sites. We conclude that inter-seedling competition may be irrelevant to seedling recruitment in hunted sites, where dispersal limitation appears to be a much stronger force shaping the seedling plant community, and thus hunting indirectly reverses the importance of competition and dispersal limitation in structuring seedling communities.
Data from: Competition, seed dispersal, and hunting: what drives germination and seedling survival in an Afrotropical forest?
Open the record for dataset details and reuse information.
SEED-MEDIATED RNA INTERFERENCE OF ANDROGEN SIGNALING AND SURVIVAL NETWORKS INDUCES CELL DEATH IN PROSTATE CANCER CELLS
GEO Series GSE165249. Homo sapiens. 28 samples. Type: Expression profiling by high throughput sequencing.
[old/mistake] Data used in the GRL paper titled "Climatology of Tropical Cyclone Seed Frequency and Survival Rate in Tropical Cyclones"
<p>Data used in the GRL paper titled "Climatology of Tropical Cyclone Seed Frequency and Survival Rate in Tropical Cyclones" by Ikehata and Satoh</p> <p>Please download and decompress the zip file. We describe details of this dataset in "readme.txt".</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.