Snapshot of macroalgae and fish assemblages in temperate reefs in the Southern European Atlantic Ecoregion

Most of the biodiversity studies in the South European Atlantic Shelf ecoregion are limited to shallow subtidal or intertidal habitats, while deeper reef habitats, also of relevant ecological importance, are particularly understudied. Macroalgal communities, associated fauna, and sea surface temperature were studied in deep reefs (25-30 m) at two locations in this ecoregion: Parcel, North of Portugal (41 degrees N), and Tarifa, Southern Spain (35 degrees N). Specifically, algal assemblages were assessed using biomass collection and associated ichthyofauna was assessed using visual census techniques using scuba. Seawater surface temperature was higher (>3 degrees C) in the southern region-Tarifa, compared to the northern region-Parcel. Our survey revealed 18 fish species and 23 algae species. The highest abundance of cold-water species (both macroalgae and fish species) was recorded in Parcel and warm-water species were dominant in Tarifa. In light of climate global trends, both regions might experience biodiversity shifts towards tropicalization. Current knowledge on their biodiversity is imperative to further evaluate potential shifts.info:eu-repo/semantics/publishedVersio

Introduction: global challenges for sociology

With the 50th anniversary of the journal, this special issue takes stock of the progress that has been made within sociology to become a more globally oriented discipline and discusses the new challenges for the future that emerge as a consequence. From its inception, classical sociology was primarily concerned with the European origins of processes of modernity that were to become global. There was little discussion of how the global might be understood in terms of structures, processes and social movements not directly identified as European but nonetheless contributing to modernity. The challenge for sociology has been to take into account these other phenomena and to rethink its core categories and concepts in light of newly understood alternative formations of the global and the social movements that bring them about

Exploring the outcomes of digital marketing on historic sites' visitor behaviour

Purpose – Digital communication and social media have an increasing importance in society and in tourism boosting. This study aims to analyse the role of digital marketing in the destination image and visitor loyalty of historic sites. Design/methodology/approach – Using a mixed-method approach combining survey data from 318 respondents and three in-depth interviews. Using structural equations modelling results reveals experience, satisfaction, image and loyalty are concepts to be considered by the destinations’ digital marketing promotion, as well as the increasing use of digital marketing by tourists, in the sense that tourists are increasing the habit of checking the opinion of others before scheduling their trip and gives them more importance, and a growing importance is given by tourists to the web/social networks of places they intend to visit. Findings – This study contributes to the theory on tourism digital marketing which can be transposed to organizations management in order to encourage discussion on the processes of capture, retention and loyalty of target audiences. Research limitations/implications – To enhance the importance of digital marketing in the process of the tourist development of the city, it is fundamental to define a clear strategy for attracting and responding to the greatest demand from cultural tourists who are increasingly interested in actively participating in learning experiences. Practical implications – The results show that digital communication and social media have an increasing importance in society and in tourism boosting and economy recovery. Social implications – The paper presents digital marketing as a possible factor in tourism development and social inclusion, advancing practical measures aimed at social justice through a fairer distribution of tourism revenues and the defence of historic centre residents’ way (i.e. Barcelos’), and quality of life. Originality/value – The authors suggest the development of a strategic digital marketing plan applied to the development and promotion of tourism in the city of Barcelos (Portugal), to complement the research presented here, thus contributing with a more practical perspective of the subject under study.info:eu-repo/semantics/acceptedVersio

Variabilidade genética do banco de germoplasma de feijão-caupi por marcadores ISSR.

O feijão caupi (Vigna unguiculata (L.) Walp.) é uma das leguminosas mais consumidas no Norte e Nordeste do Brasil. Atualmente, essa cultura passou a ocupar outros cenários agrícolas e começou a ser cultivada por grandes produtores, com maior adoção de tecnologia. Técnicas moleculares permitem fazer distinção diretamente em nível de DNA, acessar a variabilidade genética dentro de espécies cultivadas e assim identificar a diversidade disponível em bancos de germoplasma. O objetivo desse trabalho foi avaliar a variabilidade genética entre os acessos pertencentes ao Banco de Germoplasma de Feijão-Caupi da Embrapa Meio-Norte, por meio de marcadores ISSR. Foram realizadas extrações de DNA de tecido foliar de 60 genótipos de feijão-caupi e selecionados 5 primers de ISSR com melhor polimorfismo, que revelaram um total de 34 bandas, sendo 31 polimórficas (91,18% ), observada uma variação de 4 a 9 locos polimórficos e média de 6,2 bandas por primer, a matriz de similaridade revelou que o coeficiente de similaridade entre os pares de acessos variou de 0,37 a 0,96 a e apresentou média de 0,73, o par mais similar ocorreu entre os indivíduos TE-MNC-304 e TE-MNC-320 e entre TE-MNC-800 e TE-MNC-1030, enquanto o par mais dissimilar foi registrado entre os indivíduos TE-MNC-321 e TE-MNC-597. Os marcadores ISSR possibilitaram a diferenciação genética e o dendrograma permitiu a separação em dez grupos. Os marcadores ISSR foram eficientes em detectar o polimorfismo entre os genótipos estudados.CONAC 2012. Disponível em: http://www.conac2012.org/resumos/pdf/015a.pdf. Acesso em: 24 jun. 2013

Biomass accumulation and nutrition in micropropagated plants of the banana prata catarina under biofertilisers.

Made available in DSpace on 2018-01-18T22:15:33Z (GMT). No. of bitstreams: 1 ART17089.pdf: 795845 bytes, checksum: dc38c3168754265c436138ed337d6f97 (MD5) Previous issue date: 2018-01-16bitstream/item/171366/1/ART17089.pd

Operational Rule Curves of a Reservoir in Sergipe Derived by Implicit Stochastic Optimization and Nonlinear Regression

Este artigo apresenta o desenvolvimento e aplicação de curvas-guia operacionais de reservatórios de abastecimento, usando como estudo de caso a barragem do rio Poxim, em Sergipe, por meio da metodologia de otimização estocástica implícita suportada por análises de regressão (OEI-REG). O desempenho da OEI-REG é comparado com os da política de operação padrão de reservatórios (SOP: standard operating policy), da otimização determinística perante previsão perfeita de afluências futuras (ODPP) e da programação dinâmica estocástica (PDE). A princípio, são empregados cem cenários de cem anos de vazões mensais para a calibração do modelo. Posteriormente, lança-se mão de cem novas séries de afluências visando a validação dos quatro procedimentos estudados. Os resultados indicam a viabilidade da utilização da OEI, tendo em vista sua menor vulnerabilidade em relação à SOP, assim como a proximidade de suas operações com as da ODPP. Comparando-se a OEI-REG com a PDE, percebe-se a curta distância entre os valores advindos de ambas, inclusive operações menos vulneráveis por meio da OEI-REG, justificando a adoção desta, por sua matemática simplificada em comparação com a PDE.  http://dx.doi.org/10.18226/23185279.v4iss1p32This paper presents the development and application of operational rule curves for water supply reservoirs, using as a case study the Poxim river dam, Sergipe, by means of implicit stochastic optimization supported by regression analysis (ISO-REG). The performance of ISO-REG is compared with those of the standard reservoir operating policy (SOP), perfect-forecast deterministic optimization (PFDO) and stochastic dynamic programming (SDP). At first, a hundred 100-year monthly inflow scenarios are used for the model calibration. Later, a hundred new inflow series are applied for validation of the four procedures. The results indicate the feasibility of using ISO in view of its less vulnerability when compared to the SOP as well as the proximity of its operations with those from the PFDO. The comparison of ISO-REG with SDP shows small differences between both, including less vulnerable operations by ISO-REG, justifying its adoption for its simplified mathematics as compared to SDP.  http://dx.doi.org/10.18226/23185279.v4iss1p3

Comparação de modelos regressão aleatória para descrição das herdabilidades associadas à curva de crescimento de ovinos Santa Inês.

Resumo - Funções polinomiais da idade de diferentes ordens foram avaliadas na modelagem dos efeitos aleatórios para estimação de herdabilidades associadas à curva de crescimento de ovinos Santa Inês. Os efeitos fixos incluídos nos modelos de análise foram grupo de contemporâneo, a idade da ovelha ao parto e os polinômios de Legendre da idade de ordem quatro para representar a curva média de crescimento. Na parte aleatória, consideraram-se funções de diferentes ordens para modelar as variâncias associadas aos efeitos genéticos aditivos direto e materno e aos efeitos de ambiente permanente de animal e da mãe. A variância residual foi ajustada por meio de um polinômio ordinário da idade de ordem seis. De acordo com o valor do critério AIC e o teste da razão de verossimilhança, uma função contínua com as ordens cinco, cinco, sete e três, respectivamente, para os efeitos genéticos aditivos direto e materno e o ambiente permanente de animal e da mãe (k=5573), foi suficiente para ajustar a variância nos dados. Porém, de acordo com o BIC, o modelo com as ordens três, três, cinco e três, para os mesmos efeitos citados anteriormente (k=3353), proporcionou melhor ajuste nas variâncias, conseqüentemente nas herdabilidades estimadas. As herdabilidades estimadas indicam que a seleção para peso resultará em pequenos ganhos genéticos. [Comparison of random regression models for the description of the heritability associated with the growth curve of Santa Ines sheep]. Abstract - Polynomial functions of age from different orders were evaluated on the modeling of random effects associated with the growth curve of Santa Ines sheep. The fixed effects included in the analysis were contemporary groups, the age of dam at lambing and the Legendre polynomial of age of order four to represent the average growth curve. On the random part, functions of different orders were considered for modeling the variances associated with direct and maternal additive genetic effects and with direct and maternal permanent environmental effects. The residual variance was fitted by an ordinary polynomial of age of order six. According to the value of the criteria AIC and the likelihood ratio test, a continual function with the orders five, five, seven and three, respectively, for the direct and maternal additive genetic effects and direct and maternal permanent environmental effects (k=5573) was enough for fitting the variance on data. However, according to the value of the criterion BIC, the model with the orders three, three, five and three (k=3353), for the same effects above, provided best fit in the variances, consequently in the heritability estimated. The estimated heritabilities indicate that the selection for weight will result in small genetic gain