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31 results for “semi-natural grasslands”
Vertebrate grazing can mitigate impacts of nutrient addition on plant diversity and insect abundance in a semi-natural grassland
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Detecting shrub encroachment in semi-natural grasslands using UAS LiDAR
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Data from: Historical changes in grassland area determined the demography of semi-natural grassland butterflies in Japan
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Data from: A test of priority effect persistence in semi-natural grasslands through the removal of plant functional groups during community assembly
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Data from: Spatiotemporal scaling of plant species richness and functional diversity in a temperate semi-natural grassland
The accumulation of biodiversity in space and time has been modelled extensively using the species-area relationship and the species-time relationship, respectively. Recently, these models have been combined into time-area curves in order to investigate spatiotemporal scaling of species richness. This study expands on previous research by applying these spatiotemporal models to functional diversity. Understanding spatiotemporal dynamics of ecological traits is important due to their crucial role in ecosystem functioning and mediating species responses to environmental change. We present a new function based on the semi-logarithmic species-area relationship, which was applied with a power function to vegetation survey data from Scottish machair grassland for both species richness and two measures of functional diversity. When taking a whole-study approach using non-linear mixed effects models, the semi-logarithmic function used here shows a positive time-area interaction for species richness, contrasting with the negative interaction of the power law found in previous investigations. Although there was a negative time-area interaction for functional diversity measures at the whole-study scale, parameter estimates were inconsistent at the individual site level. Overall, the results reveal differing spatiotemporal dynamics of species and their traits and suggest that the appropriate scale for space-for-time substitutions depends on the aspect of biodiversity being investigated. The new model developed in this study, and the novel application to functional diversity, opens up future possible research into spatiotemporal dynamics of biodiversity.
Data from: Soil conditioning affects interactions between native and invasive exotic perennials of semi-natural grasslands
1. Semi–natural perennial grasslands are of increasing importance as components of multifunctional agroecosystems, combining biomass production with provision of other ecosystem services. Soil legacies from previous land use or exotic species can hinder their establishment, but might be overcome through a multi–stage successional strategy, whereby certain species are used to facilitate native grassland species establishment. We tested this strategy via a feedback experiment examining soil conditioning effects on interference interactions between native and exotic species. 2. Soils in a former maize–soybean production field in Minnesota, USA, were conditioned for three years with native or invasive exotic perennials or a maize–soybean crop rotation. Nitrogen (N) fertilisation was an additional treatment in field plots. In a greenhouse, native and invasive exotic perennial grassland seedlings were grown on these soils, in monoculture and in native–exotic species pairs, with and without N fertilisation. The impact of soil conditioning and field and greenhouse N fertilisation on interactions between native and exotic seedlings in mixture was determined. 3. Neighbouring plants suppressed biomass production in all native and exotic species. The maize–soybean rotation left a soil legacy that enhanced suppression of native species when grown with exotic species, while exotic species suffered no such disadvantage. 4. The strong and specific disadvantage to native species of maize–soybean soils decreased with greenhouse N fertilisation, but remained significant, while field N addition did not alter this effect. 5. Synthesis and applications. We find that the negative soil legacy of the maize–soybean rotation for native plant performance in interaction with exotics was greatly diminished in soils conditioned by native or exotic perennial species, irrespective of nitrogen addition. This highlights the potential value of perennial species in conversion from row–crop agriculture to grasslands, because all perennial species alleviated the enhanced suppression of natives observed on maize–soybean soils. We did not find strong evidence that these perennial species were capable of specifically facilitating native species over exotics, but a broader range of species should be evaluated.
Maintaining an open landscape: a 15-year multi-site experiment comparing seven management methods for semi-natural grasslands
<p>The data and publications presented here stems from a field trial started in Sweden ca 1972 (at one site still running in 2023). The purpose of the trial was to compare traditional management of semi-natural grasslands by grazing or annual mowing with five alternative management methods. At <strong>e</strong>leven locations in southern Sweden, block experiments were conducted evaluating seven treatments in 5 m * 20 m plots: grazing, annual mowing, annual spring burning, mowing every third year, mechanical removal of woody plants, herbicide control of woody plants, and untreated control. After approximately 13 years, trends for woody plants and species richness, and the occurrence of management-dependent plant species, low-grown species, and pollinator-attracting plant species were analysed. Overall, the annual mowing and grazing treatments resulted in fewer woody plants, the highest species richness, and more management-dependent, low-grown, and pollinator-attracting species. The untreated control plots showed the opposite effect, whereas less intense management (annual burning, mowing every third year, and mechanical and chemical treatments of woody plants) showed mixed and often intermediate effects. </p><p>On this ZENODO-page, one can find all the orginal publication, most in Swqedish. An article summarizing much of results can be found here: <a href="https://doi.org/10.1016/j.gecco.2023.e02721">https://doi.org/10.1016/j.gecco.2023.e02721</a></p>
Data from: Soil conditioning affects interactions between native and invasive exotic perennials of semi-natural grasslands
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Data from: Plant-pollinator networks in semi-natural grasslands are resistant to the loss of pollinators during blooming of mass-flowering crops
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Data from: Spatiotemporal scaling of plant species richness and functional diversity in a temperate semi-natural grassland
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Secondary succession over semi-natural grassland communities in the Pyrenees mountain range
<p>Raster images to monitor the spatial evolution of secondary succession over semi-natural grassland communities in the Pyrenees mountain range in Spain, during the last 36 years (1984-2019).</p>
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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.