The restoration of ecological interactions: plant-pollinator networks on ancient and restored heathlands

1. Attempts to restore damaged ecosystems usually emphasize structural aspects of biodiversity, such as species richness and abundance. An alternative is to emphasize functional aspects, such as patterns of interaction between species. Pollination is a ubiquitous interaction between plants and animals. Patterns in plant-pollinator interactions can be analysed with a food web or complex-systems approach and comparing pollination webs between restored and reference sites can be used to test whether ecological restoration has taken place. 2. Using an ecological network approach, we compared plant-pollinator interactions on four pairs of restored and ancient heathlands 11 and 14 years following initiation of restoration management. We used the network data to test whether visitation by pollinators had been restored and we calculated pollinator importance indices for each insect species on the eight sites. Finally, we compared the robustness of the restored and ancient networks to species loss. 3. Plant and pollinator communities were established successfully on the restored sites. There was little evidence of movement of pollinators from ancient sites onto adjacent restored sites, although paired sites correlated in pollinator species richness in both years. There was little insect species overlap within each heathland between 2001 and 2004. 4. A few widespread insect species dominated the communities and were the main pollinators. The most important pollinators were typically honeybees (Apis mellifera), species of bumblebee (Bombus spp.) and one hoverfly species (Episyrphus balteatus). The interaction networks were significantly less complex on restored heathlands, in terms of connectance values, although in 2004 the low values might reflect the negative relationship between connectance and species richness. Finally, there was a trend of restored networks being more susceptible to perturbation than ancient networks, although this needs to be interpreted with caution. 5. Synthesis and applications. Ecological networks provide a powerful tool for assessing the outcome of restoration programmes. Our results indicate that heathland restoration does not have to occur immediately adjacent to ancient heathland for functional pollinator communities to be established. Moreover, in terms of restoring pollinator interactions, heathland managers need only be concerned with the most common insect species. Our focus on pollination demonstrates how a key ecological service can serve as a yardstick for judging restoration success

Size matters: the value of small populations for wintering waterbirds

Protecting systematically selected areas of land is a major step towards biodiversity conservation worldwide. Indeed, the identification and designation of protected areas more often than not forms a core component of both national and international conservation policies. In this paper we provide an overview of those Special Protection Areas and Ramsar Sites that have been classified in Great Britain as of 1998/99 for a selection of wintering waterbird species, using bird count data from the Wetland Bird Survey. The performance of this network of sites is remarkable, particularly in comparison with published analyses of networks elsewhere in the world. Nevertheless, the current site-based approach, whilst having the great benefit of simplicity, is deliberately biased towards aggregating species at the expense of the more dispersed distribution species. To ensure that the network continues successfully to protect nationally and internationally important waterbird populations, efforts now need to concentrate on the derivation of species-specific representation targets and, in particular, the ways in which these can be incorporated into the site selection process. Although these analyses concern the performance of protected areas for waterbirds in Great Britain, the results have wide-ranging importance for conservation planning in general and the design of protected area networks

Webs of activity in online course design and teaching

In this study, we followed three faculty members' experiences with designing and teaching online courses for the first time. In order to complete the activity, the faculty members had to work -collaboratively with others across the university. Activity theory provided a framework within which to study faculty members' collaborative activities with members of different activity systems that had different goals, tools, divisions of labor and accountabilities. In concordance with activity theory, such differences led to contradictions, disturbances, and transformations in thinking and work activities. The results of the study have implications for individuals and systems undertaking technology integration in teaching

Italian Diaspora and Foreign Direct Investment: A Cliometric Perspective

Recent economic literature highlights that migrant networks help to overcome the informal barriers that exist in the international markets and boost international investment. Empirical studies on different countries confirm this prediction. This paper estimates (OLS-IV) an econometric model to study the impact of both emigration and immigration on Italy’s bilateral foreign direct investment (FDI). The main result is that only the Italian diaspora has a significant positive effect on Italy’s both inward and outward FDI. A theoretical framework, a profile of the diaspora and of immigration in Italy and some exemplary entrepreneurial histories help to interpret the econometric evidence.International Investments, Migrant Networks, Entrepreneurial Histories

Trust and the Reference Point for Trustworthiness in Gulf and Western Countries

Why is private investment so low in Gulf compared to Western countries? We investigate cross-regional differences in trust and reference points for trustworthiness as possible factors. Experiments controlling for cross-regional differences in institutions and beliefs about trustworthiness reveal that Gulf citizens pay much more than Westerners to avoid trusting, and hardly respond when returns to trusting change. These differences can be explained by subjects' gain/loss utility relative to their region's reference point for trustworthiness. The relation-based production of trust in the Gulf induces higher levels of trustworthiness, albeit within groups, than the rule-based interactions prevalent in the West.

How collaborative innovation and co-creation can deliver value: a stakeholder approach

This project explores how collaborative innovation and co-creation between stakeholders can deliver value for firms. In today’s increasingly competitive and fast-changing global marketplace, firms must seek to develop more frequent and higher quality innovations (Ngugi et al, 2010). In addition, customers, employees and other stakeholders are demanding opportunities to co-create and collaborate with businesses more and more. As Ramaswamy (2010) comments: “Providers of products and services are challenged by customers who are increasingly informed, connected, networked and empowered. Customers, employees and stakeholders are demanding higher quality interactions and experiences from businesses and a deeper engagement in the value-creation and service delivery processes” (Ramaswamy, 2010, pp. 22). Given this increasing need to collaborate, innovate and co-create, firms need a better understanding of how they can engage in these activities in a way that maximises the value created for all stakeholders; this project, through exploratory, qualitative research interviews and a wide-ranging literature review, seeks to make a contribution in this area

Visibility, Gossip and Intimate Neighbourly Knowledges (Findings paper no. 7)

Findings papers associated with ESRC-funded research project, 'Social Geographies of Rural Mental Health' (R000 23 8453)

Millennial cultural consumers : Co-creating value through brand communities

The purpose of this paper is to conceptualise millennial cultural consumers (MCCs) to bring together strands of consumer theory with branding theory to consider how to attract and retain younger audiences in arts organisations. With that the authors single out for attention how 'brand community' theory might apply.This paper contributes to the knowledge development of such concepts as value and brand communities. It also provides an explanation of these concepts connecting academic thought on value with pressing management challenges for arts organisations, suggesting ways to apply brand community thinking to innovatively conceptualised MCCs.Peer reviewedFinal Accepted Versio