Abundância e distribuição sazonal de espécies autóctones de camarões peneídeos no canal de abastecimento do sistema primar de aquicultura orgânica (Laguna de Guaraíras, Tibau do Sul, Rio Grande do Norte, Brasil)

Guaraíras lagoon, located in Tibau do Sul in the eastern littoral of Rio Grande do Norte (Brazil), presents a permanent connection to the sea, which guarantees the occurrence of a rich biodiversity, which includes the autochthonous shrimp species Litopenaeus schmitti, Farfantepenaeus subtilis and Farfantepenaeus brasiliensis. In spite of being subject to a strong human intervention in the last decade, mainly related to the installation of shrimp (Litopenaeus vannamei) farms, the lagoon is still scarcely studied. The present study aims at characterizing the populations of the three autochthonous penaeid shrimp species inhabiting Guaraíras, taking into consideration their abundance and seasonal distribution in the inflow channel of Primar System of Organic Aquaculture (Tibau do Sul, Rio Grande do Norte, Brazil). Twelve monthly samples were carried out from May 2005 to April 2006 with the aid of a circular cast net in the inflow channel, which is daily supplied with water from Guaraíras. Sampling months were grouped in trimesters according to the total pluviosity, thus comprising four trimesters. Water salinity was monitored twice a week and temperature values registered on a daily basis at noon, during the study period. The daily pluviosity data from the municipality of Tibau do Sul were supplied by Empresa de Pesquisa Agropecuária do Rio Grande do Norte (EMPARN). Collected shrimp were identified, weighted, measured and sexed. L. schmitti specimens (0.2 g to 17.8 g) were distributed in 1.3 g weight classes intervals. From the eighth sampling month (December 2005) onwards, males were classified into three categories, in accordance with the development of their petasm: (a) rudimentary petasm, (b) partially formed petasm, and (c) completely formed petasm. Among the ecological variables, rainfall showed the greatest dispersion (s.d.=187.74Rainfall and abundance of L. schmitti were negatively correlated (r = -0.85) whereas its abundance and water salinity were positively correlated (r = 0.63). Among 1,144 collected individuals, 1,127 were L. schmitti, 13 were F. subtilis and 4 were F. brasiliensis, which corresponded to 98.51%, 1.14% and 0.35% of the total of collected individuals. L. schmitti occurred in 100 % of all samples. Differently, the presence of F. subtilis and F. brasiliensis was restricted to 33% and 17% of the collected samples, respectively. The present study confirmed the occurrence of L. schmitti, F. brasiliensis and F. subtilis in Guaraíras. However, this lagoon seems to be primarily inhabited by juvenile Litopenaeus schmitti. The population of L. schmitti analysed showed a seasonal pattern of distribution. In general, in the months of high salinity and absence of rain, the number of individuals was higher than in the wet months. Further studies on the reproductive biology and ecology of L. schmitti, F. brasiliensis and F. subtilis may elucidate questions referring to the abundance, period, and phase of occurrence of these shrimp genera in Guaraíras. Finally, the risks associated to the establishment of L. vannamei in the lagoon provide a novel outlet for studies in this biotope

Ecologia do fitoplâncton em áreas de cultivo de Tilápia do Nilo, Oreochromis niloticus, em tanques-rede no açude Ministro João Alves, Parelhas, Rio Grande do Norte

The dams are limnic ecosystems of great importance for its multiple uses, among them, water supply for the public and to culture of artisanal fish are most relevant. The aim of the present study is to evaluate the physical-chemical characteristics and the phytoplankton community in two chosen sites (Point 1 littoral zone of point source; Point 2 pelagic zone of non-point source) of the Minister João Alves dam, which is also known as Boqueirão de Parelhas/RN. This represents the spatial distribution of the phytoplankton species in order to understand any possible alterations of the water quality and the phytoplankton composition in relation to the water quality originating from the impact of the tilapia, Oreochromis niloticus, culture. The study period also encompasses temporal variations exhibited in two seasons of an annual cycle, one during the dry season (Oct, Nov and Dec of 2008 and Jan of 2009), and the other rainy season (Mar, Apr, May and June of 2008) to extend the observation. The physicalchemical parameters, such as pH, temperature, electrical conductivity, concentration of dissolved oxygen were measured in situ and the values of the inorganic nutrients (nitrate, ammonium and orto-phosfato) and chlorophyll in the laboratory. The quali-quantitative analyses of the phytoplankton had been carried through sedimentation technique and the enumeration of the random of 400 cells, colonies and filaments counted using Sedgwick-Rafter counting chamber. The results of pH varied widely from the acidic to alkaline range with the minimum of 5.8 (± 0.8) and the maximum of 9.2 (± 0.7-0.8), at point 1 and 2. The dissolved oxygen content was higher in the rainy period than that in the dry period. The maximum electrical conductivity was of 1409 μScm-1 in point 1 and 431 minim of μScm-1, in point 2. There was a considerable alteration in the levels of inorganic nutrients such as nitrate-nitrogen, ammoniacal nitrogen and orthophosphate during the two cycles of study period. Phytoplankton assemblages presented a picture of alternate dominance among species Cyanobacteria, Bacillariophyceae and Chlorophyceae. The trophic state index diagnosed to the category of mesotrophic, which is based on the values of chlorophyll, total phosphorus and Secchi-disc measurements. The wind driven turbulence of the water column and the fresh inflow of water (flushing and dilution) during rainy season acted as constraint and did-not allow an exaggerated growth of the species of cyanobacteria. On the basis of the present we conclude that the culture of tilapias in cage-culture fails to produce pollution load that could compromise the quality of the water of the dam, probably be due to small dimension of the culture in relation to the size, volume of the water and the reservoir capacity support its own environment

Ten Year Study on Water Flushing Times and Water Quality in Southern Taylor Slough, Everglades National Park, FL

The purpose of this research was to investigate the effects of wetland restoration on the water balance, flushing time, and water chemistry of southern Taylor Slough, a major water way in Everglades National Park. Water balance and flushing time equations were calculated on a monthly time step from 2001 – 2011. Water chemistry of major ions and nutrients were analyzed and correlated with water flushing times. Results showed that evapotranspiration followed by water volume had the greatest influence on flushing time. The flushing times varied between 3 and 78 days, with longer times observed between October and December, and the shorter times between March and May. Ion concentrations at the coastal areas decreased with increased flushing times. Increased surface water inflow that resulted from restoration projects and water management changes were productive in the rainy season and should result in increased flushing times and decreased ion concentrations in Taylor Slough.

Foreign Direct Investment in Central and Eastern Europe:post-crisis perspectives

This book examines how foreign direct investment (FDI) inflows to Central and Eastern Europe have changed after the Great Recession. It argues that beyond their cyclical effects, the economic crisis and the changing competitiveness of Central and Eastern European countries have had structural impacts on FDI in the region. FDI has traditionally been viewed as the key driver of national development, but the apparent structural shift means that focusing on cheap labour as a competitive advantage is no longer a viable strategy for the countries in the region. The authors argue that these countries need to move beyond the narrative of upgrading (attracting FDI inflows with increasingly higher value added), and focus on ensuring greater value capture instead. A potential way for doing this is by developing the conditions in which innovative national companies can emerge, thrive and eventually develop into lead firms of global value chains. The book provides readers with a highly informative account of the reasons why this shift is necessary, as well as diverse perspectives and extensive discussions on the dynamics and structural impacts of FDI in post-crisis Central and Eastern Europe.

A cautionary tale of two ‘tigers’: Industrial policy ‘lessons’ from Ireland and Hungary?

This paper draws industrial policy lessons for small Central and Eastern European states through a critical evaluation of recent Irish and Hungarian experiences. The paper outlines a ‘holistic view’ of industrial policy before exploring the experiences of the two economies. Whilst both have managed to ‘do’ policy well in some regards, substantial challenges remain in making FDI attraction the centrepiece of industrial policy, as has been highlighted recently. Overall, the paper suggests that wholesale emulation of the Irish and Hungarian approach is problematic for small open CEE states, and that more balanced approaches to development - and hence industrial policy – are warranted.

Hälsoundersökning av asylsökande personer - ur ett distriktssköterskeperspektiv : En kvalitativ intervjustudie

The Swedish health care system has in recent years been faced with a challenge in relation to the increased inflow of refugees. Under Swedish law, asylum seekers should be provided the opportunity to receive health screening to determine the risk of infection and the possible need for care, as well as information about the Swedish health care to be provided. The health screening is conducted by district nurses and nurses. The purpose of this study was to investigate the nurses' experience of conducting health screening of asylum seekers. A qualitative study with semi-structured interviews was used as method of data collection. A total of eleven interviews were conducted with district nurses in two counties, in eight cities. Data from the interviews were analyzed using qualitative content analysis. This resulted in three main themes, Health screening characteristics vary, Cultural differences affect the meeting and Challenging for the district nurse. The results showed that the district nurses' organization of and the approach to the health screenings differ.  The mental health of asylum seekers is seen by district nurses in a high degree and this is experienced problems with the care. Intercultural competence and improved communications capabilities were key elements associated with health screening of asylum seekers. The term 'health care that cannot be postponed "was considered difficult to assess and there is a risk that asylum seekers receive incongruent treatment.

Ensayos sobre preferencias no homotéticas, distribución del ingreso y patrones de comercio e inversión extranjera directa

El objetivo de este trabajo es estudiar la relación entre distribución del ingreso y patrones de comercio e inversión extranjera. Por tanto, en el capítulo uno desarrolla un modelo que combina consumidores con preferencias no homotéticas y firmas heterogéneas en sus niveles de productividad, las cuales puede servir a los mercados extranjeros a través de exportaciones o inversión extranjera horizontal. Los capítulos dos y tres se prueban las predicciones teóricas que vinculan las exportaciones bilaterales y las ventas las filiales extranjeras de bienes de lujo y necesarios con la distribución del ingreso en los países de origen y de destino. Los resultados empíricos confirman parte de las predicciones teóricas.

Essays in Applied and Labor Economics

This thesis consists of three chapters. First and second chapter include original research papers with the focus of health behavior and refugee migration. In the context of a high-income developing country, Turkey, I provide new insights for the established policy discussions in the literature. Then, third chapter reviews the literature and perspectives on the determinants of attitude formation towards migration policy and migrants. This chapter extends the discussion in Chapter 2 and aims at understanding the reasons of recent global trends in anti-migration attitudes. In Chapter 1, I investigate the effects of education on the early investments of mothers in their children aged between 0-5. Exploiting a compulsory schooling reform, I document the causal effects of education on young mothers' health investments during pregnancy and postnatal period. Results suggest that there are positive effects on the use of health care services, while no effects on breast- feeding or vaccination take-ups. These results can be put into context through newly implemented Health Transformation Program in the country. I show that educated mothers use new services more and empowerment effects of the education have a role in the service use. This study gives important policy lessons to improve mothers' health care use and early child conditions in developing countries. In Chapter 2, I investigate the effects of refugee inflow on the voting behavior of natives. I use a novel data provided by a telecommunication company, focus on pre and post refugee inflow elections and investigate the vote share of the party announced "open-door" policy. Analysis suggests that although refugees and natives are culturally closer than the Western country contexts, small negative effects documented are likely be driven by non-economic reasons. These findings bring a new perspective to understand why anti-immigrant sentiments are easy to use and manipulate.

An analysis of the regulatory chill hypothesis: environmental protection in international investment law

The goal of this thesis has been to find out whether ISDS and international investment law exert a chilling effect on more stringent environmental standards at the domestic level. Due to the lack of consistent empirical and statistical evidence uncovered during the analysis, this thesis largely dismisses the regulatory chill hypothesis. However, two exceptions are identified: first, there is evidence of the efforts made by domestic industrial groups and trade unions to prevent the implementation of stricter environmental standards; second, it has become apparent that unfounded beliefs, e.g. about ISDS, held by lawmakers and regulators can play an important role in chilling stricter environmental standards. For these reasons, a new and narrower definition of the regulatory chill phenomenon has been proposed, one that only encompasses those instances in which lawmakers, governments and government agencies refrain from adopting the laws and regulations that they deem the most appropriate because they believe that doing so would lead to adverse consequences at the international trade and investment level, despite a lack of consistent and robust evidence supporting their concerns. The second part of this thesis focusses on what could be done in international economic law to promote environmentally friendly FDI, while preventing the few instances in which regulatory chill may take place due to ill-founded beliefs held by lawmakers and regulators. Following an analysis that highlights the paramount role played by public participation and responsive institutions to achieve an appropriate level of environmental protection, this study ends with a proposal that recommends the adoption of a clause within IIAs that makes pre-investment environmental screening mandatory and free from ISDS oversight.

Relato das mudanças nos índices de cárie em escolares de 6 a 12 anos antes e após implantação da equipe de saúde bucal no Programa de Saúde da Família, em Senhora de Oliveira - MG

A cárie dentária é uma doença que influencia de forma desfavorável a saúde dos indivíduos em geral e, apesar de ser passível de prevenção, continua sendo um grave problema de saúde pública e uma das doenças bucais que mais acometem crianças em idade escolar. O presente estudo relata a mudança nos índices de cárie dentária em escolares de 6 a 12 anos, antes e após implantação da equipe de saúde bucal (ESB), no Programa Saúde da Família (PSF), em Senhora de Oliveira - MG. Foram utilizados dados de um levantamento epidemiológico realizado em 2006 por solicitação da Secretária Estadual de Saúde de Minas Gerais (SESMG) nas três escolas do município que possuíam alunos na faixa etária de 6 a 12 anos de idade. Em 2009, visando avaliar mudanças na prevalência de cárie dentária após implantação da ESB foi realizado novo levantamento utilizando a mesma metodologia proposta pela SESMG em 2006. Foram examinadas as crianças presentes no momento da visita do pesquisador em duas escolas localizadas na zona urbana e uma escola localizada na zona rural, perfazendo um total de 420 alunos. A média do índice CPO-D(dentes cariados, perdidos e obturados) para a faixa etária em estudo foi de 0,98 para o levantamento realizado em 2006 e de 0,66 para o levantamento realizado em 2009, ambos abaixo da meta estabelecida pela Organização Mundial da Saúde (OMS) e Federação Dentária Internacional (FDI) para o ano de 2000 em relação à idade de 6 a 12 anos que é um índice CPO-D menor ou igual a 3. Tais dados sinalizam que conjuntamente com as medidas de caráter coletivo, as ações implementadas pela ESB como os programas voltados ao tratamento preventivo, curativo e educativo; bochechos fluoretados semanalmente nas escolas; ações coletivas de escovação dental supervisionada e aplicação tópica de flúor gel semestralmente; dentre outras, vêm alcançando bons resultados.