11Lost Souls: Ethnographic Observations on Manuring Practices in a Mediterranean Community

2016 ◽  
pp. 171-184
Author(s):  
Spyros Niavis ◽  
Theodora Papatheochari ◽  
Tonia Koutsopoulou ◽  
Harry Coccossis ◽  
Yannis Psycharis

2011 ◽  
Vol 37 (1) ◽  
pp. 43-50 ◽  
Author(s):  
Christine Hellmann ◽  
Rabea Sutter ◽  
Katherine G. Rascher ◽  
Cristina Máguas ◽  
Otilia Correia ◽  
...  

2008 ◽  
Vol 23 (3) ◽  
pp. 477-497
Author(s):  
Maria Gavouneli

AbstractTrue to its venerable tradition, the Mediterranean system seems poised to embark on a new attempt at innovation. Within the first few months of 2008, we have celebrated the adoption of the much-awaited new protocol on integrated coastal zone management in the Mediterranean and we have witnessed a number of mutually reinforcing initiatives, coming from both the neighbourhood, especially the European Union, and from afar, including financial organisations such as the World Bank. They are all designed, if not to reverse, then at least to prevent the threat to biodiversity from accelerating. In essence, the wider Mediterranean community is moving beyond the traditional allocation of state jurisdiction at sea and expanding both landwards, towards the coast, and seawards, towards the high seas. In so doing, it is developing and making use of new tools for environmental protection, challenging and perhaps redesigning in the process the traditional jurisdictional tenets of the law of the sea. This paper will attempt to map these developments and come up with a first assessment of their prospects, given the daunting structural and financial deficiencies of the system.


2019 ◽  
Vol 11 (15) ◽  
pp. 4042 ◽  
Author(s):  
Spyros Niavis ◽  
Theodora Papatheochari ◽  
Yannis Psycharis ◽  
Josep Rodriguez ◽  
Xavier Font ◽  
...  

Sustainable tourism development is considered an essential challenge for improving resource management in coastal and maritime areas. In this context, various initiatives have been developed for facilitating the assessment and monitoring of tourism sustainability. Nevertheless, the perception of sustainability varies across different tourism stakeholders, since they approach tourism development under different perspectives while the issue of data availability has been a great barrier in measuring sustainability. The present paper examines the perceptions of sustainability observed over a Community of projects with the common aim of enhancing coastal and maritime tourism sustainability at the Mediterranean. Based on surveys, the Community of projects conceptualizes sustainability, reveals their own strategies in operationalizing sustainability assessment and evaluates the usefulness and the main gaps of various sustainability assessment toolkits. The findings of the study signify that tourism sustainability is a broad concept allowing for different interpretations. The assessment of sustainability seems to be affected by the perception and weight attributed to the economic, social, environmental, and governance pillar of sustainability by each project. Finally, the applicability of international assessment toolkits could be questioned as these do not reflect the objectives of the projects and tailored made approaches are considered as essential for operationalizing sustainability assessments.


2011 ◽  
Vol 43 (4) ◽  
pp. 401-411
Author(s):  
F. LUNA ◽  
A. R. TARELHO ◽  
A. M. CAMARGO ◽  
V. ALONSO

SummaryNatural selection and genetic drift are two evolutionary mechanisms that can be analysed in human populations using their fertility and mortality patterns, and their reproductive size and isolation, respectively. This paper analyses the models of natural selection and genetic drift in Bayárcal, south-east Spain, and compares them with the observed models in the rest of the Alpujarran region. Demographic data were obtained from a sample of 77 families (48.45% of the population, with 547 inhabitants). The genetic drift and natural selection action was evaluated with the Coefficient of Breeding Isolation (CBI of Lasker and Kaplan) and Crow's index, respectively. The CBI (23.23/12.61) suggests that genetic drift is near to acting, and Crow's index (I=0.58) is slightly higher than that observed in the rest of La Alpujarra. Although the reproductive isolation of Bayárcal is not effective enough for genetic drift to act, it is near when marital migrants inside the Bayárcal valley are considered as a native population. The natural selection pattern is not different from that of the rest of La Alpujarra, but it tends towards the model of developing communities, where the demographic transition has not yet begun.


2015 ◽  
Vol 282 (1808) ◽  
pp. 20150592 ◽  
Author(s):  
Hugo Fort ◽  
Muhittin Mungan

Key gaps to be filled in population and community ecology are predicting the strength of species interactions and linking pattern with process to understand species coexistence and their relative abundances. In the case of mutualistic webs, like plant–pollinator networks, advances in understanding species abundances are currently limited, mainly owing to the lack of methodological tools to deal with the intrinsic complexity of mutualisms. Here, we propose an aggregation method leading to a simple compartmental mutualistic population model that captures both qualitatively and quantitatively the size-segregated populations observed in a Mediterranean community of nectar-producing plant species and nectar-searching animal species. We analyse the issue of optimal aggregation level and its connection with the trade-off between realism and overparametrization. We show that aggregation of both plants and pollinators into five size classes or compartments leads to a robust model with only two tunable parameters. Moreover, if, in each compartment, (i) the interaction coefficients fulfil the condition of weak mutualism and (ii) the mutualism is facultative for at least one party of the compartment, then the interactions between different compartments are sufficient to guarantee global stability of the equilibrium population.


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