Diet breadth, coexistence and rarity in bumblebees

Factors that determine the relative abundance of bumblebee species remain poorly understood, rendering management of rare and declining species difficult. Studies of bumblebee communities in the Americas suggest that there are strong competitive interactions between species with similar length tongues, and that this competition determines the relative abundance of species. In contrast, in Europe it is common to observe several short-tongued species coexisting with little or no evidence for competition shaping community structure. In this study we examine patterns of abundance and distribution in one of the most diverse bumblebee communities in Europe, found in the mountains of southern Poland. We quantify forage use when collecting nectar and pollen for 23 bumblebee species, and examine patterns of co-occurrence and niche overlap to determine whether there is evidence for inter-specific competition. We also test whether rarity can be explained by diet breadth. Up to 16 species were found coexisting within single sites, with species richness peaking in mountain pasture at ~1000m altitude. Results concur with previous studies indicating that the majority of pollen collected by bumblebees is from Fabaceae, but that some bee species (e.g. B. ruderatus) are much more heavily dependent on Fabaceae than others (e.g. B. lucorum). Those species that forage primarily on Fabaceae tended to have long tongues. In common with studies in the UK, diet breadth was correlated with abundance: rarer species tended to visit fewer flower species, after correcting for differences in sample size. No evidence was found for similarity in tongue length or dietary overlap influencing the likelihood of co-occurrence of species. However, the most abundant species (which co-occurred at most sites) occupied distinct dietary niche space. While species with tongues of similar length tended, overall, to have higher dietary niche overlap, among the group of abundant short-tongued species that commonly co-occurred there was marked dietary differentiation which may explain their coexistence

Learning cultures and multiculturalism

In the rapidly globalizing 21st century knowledge society, multicultural understanding plays a major role. However, what do we mean by “culture” in the educational context, what aspects have or should have an impact on our learning environments, and might some of these assumptions direct the development of our learning environments in an unintended and possibly undesirable way? New learning models that differ from traditional learning approaches might cause a type of a “learning culture shock” for some learners. What are the best ways to avoid and overcome cultural clashes in online learning? This chapter discusses the experiences of two cases from multicultural and multidisciplinary online programs for teacher education and professional development. Both of the programs are based on the principles of authentic e-learning framework described by Herrington, Reeves, and Oliver (2010). The aim of the study was to find out how learners with different cultural backgrounds experience the authentic e-learning process, as well as to find out what impact the authentic e-learning model has on the development of the learning culture

Science and Technology Parks in the Age of Open Innovation. The Finnish Case

The new emphasis on technological platforms, related variety, smart specialization etc. is leading to a substantial (although still incomplete) revision of established conceptual frameworks of the regional innovation systems, including the ‘cluster’ approach. At the same time, open innovation, as the emerging paradigm in the business literature on innovation, has proved to be a powerful concept, to be used both for analytical purposes and in order to design effective strategies for innovative companies. The role and development of Science and Technology Parks (STP) in Finland (one of the most dynamic countries in this respect), can be analysed to assess how the concept of ‘open innovation’ has been accepted and operationalized in the management of Finnish STPs