DataCat: The Research Data Catalogue (University of Liverpool)
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Data and analyses for the paper "The functional architecture of mother-infant communication in Rhesus Macaques and Humans: same but different", by V. Sclafani, L. De Pascalis, L. Bozicevic, A. Sepe, P. F. Ferrari, and L. Murray
No full textData and analyses for the paper "The functional architecture of mother-infant communication in Rhesus Macaques and Humans: same but different", by V. Sclafani, L. De Pascalis, L. Bozicevic, A. Sepe, P. F. Ferrari, and L. Murra
Band Structure Engineering of Bi4O4SeCl2 for Thermoelectric Applications
No full textThe mixed anion material Bi4O4 SeCl2 has an ultralow thermal conductivity of 0.1 W m−1 K−1 along its stacking axis (c axis) at room temperature, which makes it an ideal candidate for electronic band structure optimization via doping to improve its thermoelectric performance. Here, we design and realize an optimal doping strategy for Bi4O4 SeCl2 from first principles and predict an enhancement in the density of states at the Fermi level of the material upon Sn and Ge doping. Experimental work realizes the as-predicted behavior in Bi4−xSnxO4 SeCl2 (x = 0.01) through the precise control of composition. Careful consideration of multiple accessible dopant sites and charge states allows for the effective computational screening of dopants for thermoelectric properties in Bi4O 4SeCl 2 and may be a suitable route for assessing other candidate materials
Drosophila affinis
No full textA photography collection (lateral, ventral, and dorsal images) of Drosophila affinis. Part of a collection of photographs at Drosophoto.co
Drosophila bromeliae
No full textA photography collection (lateral, ventral, and dorsal images) of Drosophila bromeliae. Part of a collection of photographs at Drosophoto.co
Thirring Model in 2+1 dimensions with Domain Wall Fermions
No full textProgram code and data required to reproduce the results presented in "Spectroscopy in the 2+1d Thirring Model with N=1 Domain Wall Fermions", arXiv:2210.04790 [hep-lat]
Genetic mapping and characterisation of triclabendazole resistance in liver fluke, Fasciola hepatica: Genotyping data from individual parasites
No full textGenotype data from an experimental cross between a triclabendazole-susceptible and triclabendazole-resistant isolate. Parental, F1 (treated and untreated) and F2 (treated and untreated) parasites were genotyped at 55 loci (including on scaffolds under selection and neutral scaffolds)
Data: Drought and fire determine juvenile and adult woody diversity and dominance in a semi-arid African savanna
No full textAim: To understand how communities of adult and juvenile (seedlings and saplings) woody plants were impacted by fire and the 2014 – 2016 El Niño drought in Kruger National Park, South Africa.
Methods: We used a landscape scale fire experiment spanning 2013-2019 in a semi-arid savanna in the central west of Kruger National Park (mean annual precipitation, 543 mm). Adult and juvenile woody species composition were recorded during and after the drought in 40 plots that experienced a mix of no fire, moderate fire and frequent fire treatments. Using multivariate modelling, we related community composition in juvenile and adult woody plants to year of sampling and the experimental fire treatments.
Results: Post-drought, there was significant adult woody plant top-kill, especially in dominant species Dichrostachys cinerea (81% reduction in abundance), Acacia nigrescens (30%), and Combretum apiculatum (19%), but no significant change in adult species richness. Two years post-drought, abundance of all juveniles decreased by 35%, and species richness increased in juveniles in both the frequent fire (7%) and no fire treatments (32%).
Conclusion: Counter-intuitively, the El Niño drought increased species richness of the woody plant community due to the recruitment of new species as juveniles, a potential lasting impact on diversity, and where different fire regimes were associated with differences in community composition. Drought events in semi-arid savannas could drive temporal dynamics in species richness and composition in previously unrecognised ways
Grazing lawns and overgrazing in frequently grazed grass communities
No full textFrequent grazing can establish high forage value grazing lawns supporting high grazer densities, but can also produce overgrazed grass communities with unpalatable or low grass basal cover, supporting few grazers. Attempts to create grazing lawns via concentrated grazing, with a goal to increase grazer numbers, are thus risky without knowing how environmental conditions influence the likelihood of each outcome.
We collected grass species and trait data from 33 frequently grazed grass communities across eastern South Africa (28 sites) and the Serengeti National Park, Tanzania (5 sites), covering wide rainfall (336–987 mm.yr-1) and soil (e.g. 44–93% sand) gradients. We identified four grass growth forms using hierarchical clustering on principal components analyses of trait data, and assessed trait-environment and growth form-environment relationships using fourth corner and principal components analyses.
We distinguished two palatable grass growth forms that both attract yet resist grazers, and comprise grazing lawns: 1) ‘lateral attractors’ that spread vegetatively via stolons and rhizomes, and 2) ‘tufted attractors’ that form isolated tufts, and may have alternate tall growth forms. By contrast, 3) tough, upright, tufted ‘resisters’, and 4) ‘avoiders’ with sparse architectures or that grow appressed to the soil surface, are of little forage value and avoided by grazers.
Grazing lawns occurred across a wide range of conditions, typically comprising lateral attractor grasses in drier, sandy environments, and tufted attractor grasses in wetter, low-sand environments. Resisters occurred on clay-rich soils in mesic areas, while avoiders were widespread but scarce.
While grazing lawns can be established under most conditions, monitoring their composition and cover is important, as the potential for overgrazing seems as widely relevant. Tufted attractor-dominated lawns appear somewhat more vulnerable to degradation than lateral attractor-dominated lawns. Increased avoider or resister abundance both reduce forage value, although resisters may provide better soil protection
Dataset: Effect of flower identity and diversity on reducing aphid populations via natural enemy communities
No full textThis dataset contains data from the paper: Zytynska SE, Eicher M, Fahle R, Weisser W. Effect of flower identity and diversity on reducing aphid populations via natural enemy communities. Ecology and Evolution.
Floral plantings are often used in agriculture to attract pollinator communities but they also play an important role in recruiting and establishing natural communities for natural pest control. Inconsistent effects of floral plantings for pest control may be a result of an absence of mechanistic insights and a reliance on the idea that simply increasing flower diversity will benefit these services. A more tailored set of flower species may be needed to benefit the natural enemies through provision of nectar and alternative prey. We used an outside pot experiment to investigate the effect of three flower plants (Fagopyrum esculentum, Vicia faba, Trifolium pratense) on reducing aphid pests on four different plant cultivars of barley (Hordeum vulgare), over two years. We grew the four cultivars of barley alone, next to a single flower or next to a mixture of flowers and observed aphid and natural enemy colonisation across the growing season. Aphid populations sizes were reduced on all barley cultivars grown next to a flower with stronger pest suppression when all flowers were present. Each flower species recruited a different community of non-barley aphids that, in turn, varied in their ability to establish the natural enemy populations, and subsequently the ability to reduce barley aphid populations. Overall increased pest suppression in the mixed treatments was a result of numerous weaker interactions between different flower, pest, and natural enemy species, rather than a few dominant interactions. Natural enemy communities could be enhanced by incorporating flower species that vary in their ability to attract and host alternative prey (i.e. non-pest) as well as suitable nectar provisioning. We can use our knowledge of ecological interactions to tailor floral plantings to increase the effectiveness of pest control services
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