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56 results for “Seed disperser effectiveness”
Data from: Partitioning the relative contribution of one-phase and two-phase seed dispersal when evaluating seed dispersal effectiveness
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Data from: Overall seed dispersal effectiveness is lower in endemic Trillium species than in their widespread congeners
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Seed predation and dispersal by small mammals in a landscape of fear: effects of personality, predation risk, and land-use change
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Ecology of fear and its effect on seed dispersal by a neotropical rodent by Dumas Gálvez and Marisol Hernández
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Data from: Pre-dispersal seed predators and fungi differ in their effect on Luehea seemannii capsule development, seed germination and dormancy across two Panamanian forests
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Effects of seed morphology and elaiosome chemical composition on attractiveness of five Trillium species to seed-dispersing ants
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Data from: Large frugivores matter: insights from network and seed dispersal effectiveness approaches
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Data from: Persistence of the effect of frugivore identity on post-dispersal seed fate: consequences for the assessment of functional redundancy
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Persistence of seed dispersal in agroecosystems: effects of landscape modification and intensive soil management practices in avian frugivores, frugivory and seed deposition in olive croplands
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Data from: Divergent effects of forest edges on host distribution and seed disperser activity influence mistletoe distribution and recruitment
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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: Effects of increasing aridity and chronic anthropogenic disturbance on seed dispersal by ants in Brazilian Caatinga
1. Anthropogenic disturbance and climate change are the main drivers of biodiversity loss and ecological services around the globe. There is concern that climate change will exacerbate the impacts of disturbance and thereby promote biotic homogenization, but its consequences for ecological services are unknown. 2. We investigated the individual and interactive effects of increasing chronic anthropogenic disturbance (CAD) and aridity on seed dispersal services provided by ants in Caatinga vegetation of northeastern Brazil. 3. The study was conducted in Catimbau National Park, Pernambuco, Brazil. Within an area of 214 km2, we established nineteen 50 x 20 m plots that encompassed gradients of both CAD and aridity. We offered diaspores of six plant species, three myrmecochorous diaspores and three fleshy fruits that are secondarily dispersed by ants. We then quantified the number of interactions, seed removal rate and dispersal distances, and noted the identities of interacting ant species. Finally, we used pitfall trap data to quantify the abundances of ant disperser species in each plot. 4. Our results show that overall composition of ant disperser species varied along the gradients of CAD and aridity, but the composition of high-quality dispersers varied only with aridity. The total number of interactions, rates of removal and mean distance of removal all declined with increasing aridity, but they were not related to CAD. These same patterns were found when considering only high-quality disperser species, driven by the responses of the dominant disperser Dinoponera quadriceps. We found little evidence of interactive effects of CAD and aridity on seed dispersal services by ants. 5. Our study indicates that CAD and aridity act independently on ant-mediated seed dispersal services in Caatinga, such that the impacts of anthropogenic disturbance are unlikely to change under the forecast climate of increased aridity. However, our findings highlight the vulnerability of seed dispersal services provided by ants in Caatinga under an increasingly arid climate due to low functional redundancy in high-quality disperser species. Given the large number of plant species dependent on ants for seed dispersal, this has important implications for future plant recruitment and, consequently, for the composition of Caatinga plant communities.
Data from: Cascading effects of forested area and isolation on seed dispersal effectiveness of rodents on subtropical islands
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Data from: Seed-dispersal networks respond differently to resource effects in open and forest habitats
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Data from: Effects of increasing aridity and chronic anthropogenic disturbance on seed dispersal by ants in Brazilian Caatinga
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From wheat seeds to sourdough bread: microbial dispersion, selection and functional effect
<p>Datasets describing ongoing microbial dispersion, selection and functional effect from wheat seeds to sourdough bread. The data were collected, analyzed, and reported within the following publication :</p> <p>Elisa Michel, Matthieu Barret, Véronique Chable, Hélène Chaudy, Héloise Debroise, Marion Deffrasnes, Xavier Dell’Armi, Xavier Dousset, Isabelle Goldringer, Stéphane Guezenec, Isabelle Hue, Julien Lebrat, Judith Legrand, Lili Moyses, Thibault Nidelet, Michel Perrin, Peggy Rigou, Philippe Roussel, Simon Rousselot, Olivier Rué, Estelle Serpolay-Besson, Sylvain Santoni, Bruno Taupier-Letage, Camille Vindras-Fouillet, Bernard Onno and Delphine Sicard. From wheat seeds to sourdough bread: microbial dispersion, selection and functional effect.</p> <p>This work results from a participatory research project BAKERY (https://www6.inra.fr/bakery_eng/)</p>
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Allen Brain Atlas
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DANDI Archive for NWB datasets
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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.