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Innovation and Creativity in Late Medieval and Early Modern European Cities
Late medieval and early modern cities are often depicted as cradles of artistic creativity and hotbeds of new material culture. Cities in renaissance Italy and in seventeenth and eighteenth-century northwestern Europe are the most obvious cases in point. But, how did this come about? Why did cities rather than rural environments produce new artistic genres, new products and new techniques? How did pre-industrial cities evolve into centres of innovation and creativity? As the most urbanized regions of continental Europe in this period, Italy and the Low Countries provide a rich source of case studies, as the contributors to this volume demonstrate. They set out to examine the relationship between institutional arrangements and regulatory mechanisms such as citizenship and guild rules and innovation and creativity in late medieval and early modern cities. They analyze whether, in what context and why regulation or deregulation influenced innovation and creativity, and what the impact was of long-term changes in the political and economic sphere.
eBook
Apprenticeship in early modern Europe
\"The subject of apprenticeship, one of the more enduring of all economic arrangements, has received more attention from economic historians and the economics profession at large in recent years. Yet, compared, say, with issues such as the economics of slave labor or the rise of formal human capital and literacy, apprenticeship -- the mechanism through which practical skills were transferred from generation to generation -- has not been the subject of much research until the last decades\"-- Provided by publisher.
Book
Soil fungal assemblage complexity is dependent on soil fertility and dominated by deterministic processes
• In the processes controlling ecosystem fertility, fungi are increasingly acknowledged as key drivers. However, our understanding of the rules behind fungal community assembly regarding the effect of soil fertility level remains limited.
• Using soil samples from typical tea plantations spanning c. 2167 km north-east to south-west across China, we investigated the assemblage complexity and assembly processes of 140 fungal communities along a soil fertility gradient.
• The community dissimilarities of total fungi and fungal functional guilds increased with increasing soil fertility index dissimilarity. The symbiotrophs were more sensitive to variations in soil fertility compared with pathotrophs and saprotrophs. Fungal networks were larger and showed higher connectivity as well as greater potential for inter-module connection in more fertile soils. Environmental factors had a slightly greater influence on fungal community composition than spatial factors. Species abundance fitted the Zipf–Mandelbrot distribution (niche-based mechanisms), which provided evidence for deterministic-based processes.
• Overall, the soil fungal communities in tea plantations responded in a deterministic manner to soil fertility, with high fertility correlated with complex fungal community assemblages. This study provides new insights that might contribute to predictions of fungal community complexity.
Journal Article
The European guilds : an economic analysis
\"Guilds ruled many crafts and trades from the Middle Ages to the Industrial Revolution, and have always attracted debate and controversy. They were sometimes viewed as efficient institutions that guaranteed quality and skills. But they also excluded competitors, manipulated markets, and blocked innovations. Did the benefits of guilds outweigh their costs? Analyzing thousands of guilds that dominated European economies from 1000 to 1880, The European Guilds uses vivid examples and clear economic reasoning to answer that question. Sheilagh Ogilvie's book features the voices of honorable guild masters, underpaid journeymen, exploited apprentices, shady officials, and outraged customers, and follows the stories of the \"vile encroachers\"--Women, migrants, Jews, gypsies, bastards, and many others--desperate to work but hunted down by the guilds as illicit competitors. She investigates the benefits of guilds but also shines a light on their dark side. Guilds sometimes provided important services, but they also manipulated markets to profit their members. They regulated quality but prevented poor consumers from buying goods cheaply. They fostered work skills but denied apprenticeships to outsiders. They transmitted useful techniques but blocked innovations that posed a threat. Guilds existed widely not because they corrected market failures or served the common good but because they benefited two powerful groups--guild members and political elites.\"--Jacket.
Book
Litter chemistry influences decomposition through activity of specific microbial functional guilds
Niche differentiation among species is a key mechanism by which biodiversity may be linked to ecosystem function. We tested a set of widely invoked hypotheses about the extent of niche differentiation in one of the most diverse communities on Earth, decomposer microorganisms, by measuring their response to changes in three abundant litter resources: lignin, cellulose, and nitrogen (N). To do this, we used the model system Arabidopsis thaliana to manipulate lignin, cellulose, and N availability and then used high-throughput sequencing to measure the response of microbial communities during decay. Resequencing the decomposer communities after incubation of decomposed litter with pure substrates showed that groups of species had unique substrate use profiles, such that species organized into functional \"guilds\" of decomposers that were associated with individual litter chemicals. Low concentrations of lignin, cellulose, or N in the litter caused unique shifts in decomposer community composition after 1 yr of decay. Low cellulose plants had low levels of fungi in all decomposer guilds, low lignin plants had high levels of fungi in all decomposer guilds, and low N plants had low levels of fungi in decomposer guilds associated with sucrose and lignin. The relative abundance of decomposer guilds correlated with the total loss of individual litter chemicals during litter decay in the field. In addition, N fertilization shifted decomposer communities during both the early and later stages of decay to those dominated by decomposers in the cellulose guild. Our results contrast the assumption that major carbon (C) and N degradation mechanisms are uniform across whole decomposer communities and instead suggest that decomposition arises from complementarity among groups of metabolically distinct taxa.
Journal Article
Fertility-related interplay between fungal guilds underlies plant richness–productivity relationships in natural grasslands
• The plant richness–productivity relationship is a central subject in ecology, yet the mechanisms behind this pattern remain debated. Soil fungi are closely associated with the dynamics of plant communities, however empirical evidence on how fungal communities integrate into the richness–productivity relationships of natural environments is lacking.
• We used Illumina high-throughput sequencing to identify rhizosphere fungal communities across a natural plant richness gradient at two sites with different fertility conditions, and related the subsequent information to plant richness and productivity to elucidate the role of fungal guilds in integrating the linkages of both plant components.
• Saprotrophs, mycorrhizal fungi and potential plant pathogens interacted differently between the sites, with saprotrophic and mycorrhizal fungal abundances being positively correlated at the high-nutrient site and abundances of mycorrhizal fungi and potential plant pathogens being negatively correlated at the low-nutrient site. The synergistic associations between these fungal guilds with plant richness and productivity operated in concert to promote positive richness–productivity relationships.
• Our findings provide empirical evidence for the importance of soil fungal guilds in integrating the linkages of plant richness and productivity, and suggest that future work incorporating soil fungal communities into richness–productivity relationships would advance our mechanistic understanding of their linkages.
Journal Article
The social fabric of fifteenth-century Florence : identities and change in the world of second-hand dealers
\"The Arte dei rigattieri (merchants of second-hand goods in Florence) have never been the subject of a systematic study, even in scholarship devoted to the history of trades. Underpinned by a large collection of archival material, this book analyzes the social life and economic activity of rigattieri in fifteenth-century Florence. It offers invaluable information on issues such as the relationship between socio-political affiliations and economic interest as well as the structures of consumption and the spending power of different social groups. Furthermore, through the lens of the Arte dei Rigattieri, this work examines the connection between the development of the political bureaucracy, the establishment of Medicean power, and contemporaneous processes of identity construction and social mobility\"-- Provided by publisher.
Book
Environmental stress destabilizes microbial networks
Environmental stress is increasing worldwide, yet we lack a clear picture of how stress disrupts the stability of microbial communities and the ecosystem services they provide. Here, we present the first evidence that naturally-occurring microbiomes display network properties characteristic of unstable communities when under persistent stress. By assessing changes in diversity and structure of soil microbiomes along 40 replicate stress gradients (elevation/water availability gradients) in the Florida scrub ecosystem, we show that: (1) prokaryotic and fungal diversity decline in high stress, and (2) two network properties of stable microbial communities-modularity and negative:positive cohesion-have a clear negative relationship with environmental stress, explaining 51-78% of their variation. Interestingly, pathogenic taxa/functional guilds decreased in relative abundance along the stress gradient, while oligotrophs and mutualists increased, suggesting that the shift in negative:positive cohesion could result from decreasing negative:positive biotic interactions consistent with the predictions of the Stress Gradient Hypothesis. Given the crucial role microbiomes play in ecosystem functions, our results suggest that, by limiting the compartmentalization of microbial associations and creating communities dominated by positive associations, increasing stress in the Anthropocene could destabilize microbiomes and undermine their ecosystem services.
Journal Article