Palaeoenvironment of Eocene prodelta in Spitsbergen recorded by the trace fossil Phycosiphon incertum

Ichnological, sedimentological and geochemical analyses were conducted on the Eocene Frysjaodden Formation in order to interpret palaeoenvironment prodelta sediments in the Central Basin of Spitsbergen. Phycosiphon incertum is the exclusive ichnotaxon showing differences in size, distribution, abundance and density, and relation to laminated/bioturbated intervals. Large P. incertum mainly occur dispersed, isolated and randomly distributed throughout the weakly laminated/non-laminated intervals. Small P. incertum occur occasionally in patches of several burrows within laminated intervals or as densely packed burrows in thin horizons in laminated intervals or constituting fully bioturbated intervals that are several centimetres thick. Ichnological changes are mainly controlled by oxygenation, although the availability of benthic food cannot be discarded. Changes in oxygenation and rate of sedimentation can be correlated with the registered variations in the Bouma sequence of the distal turbiditic beds within prodeltal shelf sediments.Funding for this research was provided by Project CGL2012-33281 (Secretaría de Estado de Investigación, Desarrollo e Innovación, Spain), Project RYC-2009-04316 (Ramón y Cajal Programme) and Projects RNM-3715 and RNM-7408 and Research Group RNM-178 (Junta de Andalucía). The authors benefited from a bilateral agreement between the universities of Granada and Oslo, supported by the University of Granada

Water scarcity, property regimes and irrigation management in Sonjo, Tanzania

This article explores the dynamics of property rights in irrigation water in Sonjo, Tanzania. It analyses an unsuccessful attempt by the ruling political group to change the institutional arrangements of water control, to serve better their private goals. This example shows that not all internal institutional innovations in the field of utilising natural resources lead to increased efficiency of the system from the point of view of the whole community. We draw on New Institutional Economics (NIE) and Common Property Resource Management (CPRM) theory to analyse the way in which it was possible that those few within Sonjo society who are formally/nominally 'the owners' of water sought to privatise de facto collective use rights of all community members. We consider why this was done in some, but not all, Sonjo communities, and we describe why this process has eventually failed.

Institutions in theories of land markets: illustrated by the Dutch market for agricultural land

Contains fulltext : 95302.pdf (publisher's version ) (Closed access)8 juni 201

Crescimento da população idosa no Brasil: transformações e conseqüências na sociedade The increase of the elderly population in Brazil: transformation of and consequences for society

São discutidas as transformações sociais e econômicas que incidem sobre a vida dos idosos decorrentes do aumento da população de 60 anos ou mais, no Brasil. O processo migratório e a intensa urbanização (em 1940 a população rural era de 68,8% e em 1980 de 32,4%) afetaram particularmente a população idosa dos grandes centros, ou daqueles que envelheceram nestas cidades. Esta nova organização social acentuou os problemas de solidão e pobreza dos idosos. Além desta perda de status social que exclui sua participação na sociedade moderna, o idoso teve também reduzido o suporte emocional no interior de sua família. Entre os fatores que concorrem para tal, destacam-se a mudança do padrão do modelo familiar, de extensa para nuclear, a maior mobilidade e o aumento do número de separações e divórcios. O maior período de vida da mulher e suas conseqüências (redução de renda, aumento do número de viúvas e maior freqüência de longos períodos de doenças crônicas), como também a mudança do papel social da mulher no mundo contemporâneo, fazem parte de uma discussão específica relativa à mulher e à velhice. A questão do trabalho, da aposentadoria e do custo social (coeficiente de dependência) é outro aspecto abordado.<br>The social and economic transformation which has been occurring in the life of the elderly, and the increase of the Brazilian population aged 60 years or over is discussed. The migration process (in 1940 the rural population was 68.8% and in 1980, 32.4%) and the intense urbanisation in major Brazilian cities has been particularly evident for the elderly population, or for those growing older in these cities. This new social organization had increased the problems of loneliness and poverty among the elderly. Furthermore, as a consequence of the loss of social status which has reduced their participation in contemporary society, the elderly have been loosing the emotional suport within their own families. Traditionally, older people are viewed as an integral part of the family and enjoy high esteem and prestige. There are factors which play an important role in the family changes - these factors are the decrease in the number of children, their dispersion owing to migration and urbanisation, and the increase in the number of divorces between couples. The relatively longer life span of women has brought unique consequences such as a decrease of income, an increase in the number of widows and a longer period of chronic disease, as well as the changing role of women and their participation in the labour force which further diminish the chances of family support. This paper also discusses certain aspects related to the issues of work, retirement and social expenditure (dependency ratio)