If you plant it,they will come: quantifying attractiveness of exotic plants for winter-active flower visitors in community gardens

Urban community gardens are potentially important sites for urban pollinator conservation because of their high density, diversity of flowering plants, and low pesticide use (relative to agricultural spaces). Selective planting of attractive crop plants is a simple and cost-effective strategy for attracting flower visitors to urban green spaces, however, there is limited empirical data about which plants are most attractive. Here, we identified key plant species that were important for supporting flower visitors using a network-based approach that combined metrics of flower visitor abundance and diversity on different crop species. We included a metric of ‘popularity’ which assessed how frequently a particular plant appeared within community gardens. We also determined the impact of garden characteristics such as size, flower species richness, and flower species density on the abundance and diversity of flower visitors. Two plant species, Brassica rapa and Ocimum basilicum were identified as being particularly important species for supporting flower visitor populations. Flower species richness had a strong positive effect on both the abundance and diversity of flower visitors. We suggest that gardeners can maximise the conservation value of their gardens by planting a wide variety of flowering plants including attractive plants such as B. rapa and O. basilicum.

     

Prevalence and risk factors of Leptospira infection in urban brown rats (Rattus norvegicus), Vienna,Austria

Urban Ecosystems - Leptospirosis is a worldwide bacterial zoonosis which incidence is expected to increase in conjunction with global change. In urban ecosystems, synanthropic rats are the key...     

Making a target work: Messages from a pilot of the 6‐month time limit on care proceedings in England

Since 2014, it has been a legal requirement in England and Wales for child care proceedings to be concluded, apart from “exceptional cases,” within 26 weeks. When this was first proposed, there were concerns that it might lead to poorer decision‐making or to delay being squeezed to either side of the court proceedings, before or afterwards. This paper reports on the messages from a pilot programme to hit the 26‐week target that took place in London in 2012–2013. The study compared the progress of the cases from the pilot year with those the year before, 180 cases in total, involving 256 children. The local authorities involved were able to achieve considerable improvements in timeliness, not just in the proceedings, but for the pre‐ and post‐court processes too; and the quality and fairness of decisions did not seem to be impaired, in terms of the plans for the children and subsequent outcomes over a period of 2 years. “Targets” do not generally find a warm welcome in the social work literature, but this paper shows that when collaboratively implemented, with a measure of flexibility and adequate resources, they can be an effective way of helping to achieve positive change.     

‘Agricultural Poverty’ and the Expansion of Artisanal Mining in Sub-Saharan Africa: Experiences from Southwest Mali and Southeast Ghana

Why do people engage in artisanal and small-scale mining (ASM)—labour-intensive mineral extraction and processing activity—across sub-Saharan Africa? This paper argues that ‘agricultural poverty’, or hardship induced by an over-dependency on farming for survival, has fuelled the recent rapid expansion of ASM operations throughout the region. The diminished viability of smallholder farming in an era of globalization and overreliance on rain-fed crop production restricted by seasonality has led hundreds of thousands of rural African families to ‘branch out’ into ASM, a move made to secure supplementary incomes. Experiences from Komana West in Southwest Mali and East Akim District in Southeast Ghana are drawn upon to illustrate how a movement into the ASM economy has impacted farm families, economically, in many rural stretches of sub-Saharan Africa.     

Comparison of three-dimensional profiles over time

In this paper, we describe an analysis for data collected on a three-dimensional spatial lattice with treatments applied at the horizontal lattice points. Spatial correlation is accounted for using a conditional autoregressive model. Observations are defined as neighbours only if they are at the same depth. This allows the corresponding variance components to vary by depth. We use the Markov chain Monte Carlo method with block updating, together with Krylov subspace methods, for efficient estimation of the model. The method is applicable to both regular and irregular horizontal lattices and hence to data collected at any set of horizontal sites for a set of depths or heights, for example, water column or soil profile data. The model for the three-dimensional data is applied to agricultural trial data for five separate days taken roughly six months apart in order to determine possible relationships over time. The purpose of the trial is to determine a form of cropping that leads to less moist soils in the root zone and beyond. We estimate moisture for each date, depth and treatment accounting for spatial correlation and determine relationships of these and other parameters over time.     

The Purchasing Performance of Organizations Using e-Marketplaces

We apply transaction cost economic theory and perspectives in an empirical test regarding purchasing performance using electronic marketplaces. Basically, buyers can purchase products either by hopping across multiple electronic marketplaces or maintaining close relationships with a particular electronic marketplace. We investigate which is more beneficial for a buyer organization's purchasing performance in terms of price reduction and purchasing efficiency. We undertake this task by developing hypotheses and a research model and subjecting them to testing and analysis using the purchase of maintenance, repair and operations products in a large and important market, South Korea.     

A walk on the wild side: Urban ethnography meets the Flâneur

Abstract

This paper focuses on the concept of the flâneur, deriving largely from the works of Baudelaire and Walter Benjamin, and attempts to reveal its contemporary relevance for sociological practice. The flâneur is treated as an instructive metaphor for the sociologist's relationship with modernity and urban life, and therefore as providing insight into the social, historical and theoretical contexts for the analysis of the world today. More than this, the idea of the flâneur is treated as highly instructive of research strategies confronting urban life, namely ethnography. The paper seeks to expose a critical space between ‘realist’ and ‘textual’ ethnographies and provide a locus for the discussion of associated methodological problems. A burgeoning literature and tradition of work in this area is examined which will also be of interest to the sociological theorist.