Island properties dominate species traits in determining plant colonizations in an archipelago system

The extrinsic determinants hypothesis emphasizes the essential role of environmental heterogeneity in species' colonization. Consequently, high resident species diversity can increase community susceptibility to colonizations because good habitats may support more species that are functionally similar to colonizers. On the other hand, colonization success is also likely to depend on species traits. We tested the relative importance of environmental characteristics and species traits in determining colonization success using census data of 587 vascular plant species collected about 70 yr apart from 471 islands in the archipelago of SW Finland. More specifically, we explored potential new colonization as a function of island properties (e.g. location, area, habitat diversity, number of resident species per unit area), species traits (e.g. plant height, life-form, dispersal vector, Ellenberg indicator values, association with human impact), and species' historical distributions (number of inhabited islands, nearest occurrence). Island properties and species' historical distributions were more effective than plant traits in explaining colonization outcomes. Contrary to the extrinsic determinants hypothesis, colonization success was neither associated with resident species diversity nor habitat diversity per se, although colonization was lowest on sparsely vegetated islands. Our findings lead us to propose that while plant traits related to dispersal and establishment may enhance colonization, predictions of plant colonizations primarily require understanding of habitat properties and species' historical distributions.Peer reviewe

An analysis of ophthalmology services in Finland - has the time come for a Public-Private Partnership?

<p>Abstract</p> <p>Background</p> <p>We studied the prerequisites for Public-Private Partnership (PPP) in the context of the Finnish health care system and more specifically in the field of ophthalmology. PPP can be defined as a more or less permanent cooperation between public and private actors, through which the joint products or services are developed and in which the risks, costs and profits are shared.</p> <p>The Finnish eye care services system is heterogeneous with several different providers and can be regarded as sub-optimal in terms of overall resource use. What is more, the public sector is suffering from a shortage of ophthalmologists, which further decreases its possibilities to meet the present needs. As ophthalmology has traditionally been a medical specialty with a substantial private sector involvement in service provision, PPP could be a feasible policy to be used in the field. We thus ask the following research question: Is there, and to what extent, an open window of opportunity for PPP?</p> <p>Methods</p> <p>In addition to the previously published literature, the research data consisted of 17 thematic interviews with public and private experts in the field of ophthalmology. The analysis was conducted in two stages. First, a literature-based content analysis was used to explore the prerequisites for PPP. Second, Kingdon's (1995) multiple streams theory was used to study the opening of the window of opportunity for PPP.</p> <p>Results</p> <p>Public and private parties reported similar problems in the current situation but defined them differently. Also, there is no consensus on policy alternatives. Public opinion seems to be somewhat uncertain as to the attitudes towards private service providers. The analysis thus showed that although there are prerequisites for PPP, the time has not yet come for a Public-Private Partnership.</p> <p>Conclusion</p> <p>Should the window open fully, the emergence of policy entrepreneurs and an opportunity for a win-win situation between public and private organizations are required.</p

The procedural nature of interactive digital narratives and early literacy

Lecture Notes in Computer Science. Vol. 12497Interactive digital narrative (IDN) has characteristics that challenge the traditional assumptions about narratives, in this sense IDN is defined as composed of system, process, and product, in a model which highlights the procedural nature of IDN as a reactive and generative system. In this paper, we argue that educational applications of IDN can be enhanced by placing the emphasis on the procedural nature of IDN given by the specific framework. We present an authoring tool for IDN to support early literacy practices in pre- and primary school children and discuss how the preliminary findings benefit from an analysis oriented by the Specific Theory for IDN. We propose that the inclusion of system, process, and product in the analysis and the pedagogical use of IDN bring up two crucial aspects of young children’s language development: embodied cognition (specially supported by the system) and interaction (specially benefited by the process). Finally, we argue that the procedural nature of IDN can provide a learning opportunity in educational applications of IDN, whereby we highlight the prominent role of the user within the proposed IDN framework.This work has been financed by national funds through the Portuguese Foundation for Science and Technology (FCT) - and by the European Regional Development Fund (ERDF) through the Competitiveness and Internationalisation Operational Program under the reference POCI/01/0145/FEDER/032580