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

Agronomic and environmental performance of melon produced in the Brazilian semiarid region.

Made available in DSpace on 2020-01-17T18:08:07Z (GMT). No. of bitstreams: 1 ART19082.pdf: 999009 bytes, checksum: 40d65be6c71b1c19862e4862657ea87d (MD5) Previous issue date: 2019bitstream/item/209058/1/ART19082.pd

Produção da videira Ruby Cabernet submetida a diferentes modalidades de colheita e sistemas de condução, no vale do Submédio São Francisco, Brasil.

A videira ?Ruby Cabernet?, originária da Califórnia, resultou do cruzamento entre Cabernet Sauvignon x Carignane. Na região do Vale do Submédio São Francisco, a produção dessa cultivar teve início na década de 80, com seu primeiro vinho varietal lançado em 2003. Essa região é pioneira na produção desse vinho varietal, no Brasil. O objetivo deste trabalho foi caracterizar o comportamento produtivo da cv. Ruby Cabernet conduzida em latada e espaldeira e submetida a diferentes modalidades de colheita. Foi utilizado um vinhedo comercial, implantado em fevereiro de 2004, sobre porta-enxerto IAC-572, com espaçamento 3,0 x 2,0 m, irrigado por gotejamento, com poda realizada em 23.11.2006. O delineamento experimental foi blocos ao acaso, com parcela subdividida e quatro repetições. Os tratamentos foram sistema de condução, sendo T1 = espaldeira; T2 = latada; e colheita selecionada, sendo C1 = colheita planta completa e C2 = colheita 2 cachos da base dos ramos, aos 144 dias após a poda (DAP); e C3 = colheita cachos restantes de C2, realizada aos 172 DAP. Os sistemas de condução foram distribuídos nas parcelas e as colheitas nas subparcelas. O sistema de condução em latada foi significativamente superior na produção (8,3 Kg/planta), no número de cachos (127) e no peso médio dos cachos (64,4 g), quando comparado com a condução em espaldeira (4,3 Kg/planta; 66 cachos; 60,1 g). Entre as modalidades de colheita, não foram observadas diferenças significativas entre a produção e o peso médio dos cachos. No entanto, em C1, o peso de 100 bagas foi maior sob espaldeira. A colheita seletiva dos cachos não implicou em redução significativa da produção total, porém o sistema de condução pode afetar a qualidade das uvas, devido às bagas maiores na espaldeira, devido à relação película/polpa, podendo alterar a qualidade e o equilíbrio dos vinhos durante o processo de vinificação

Operations and control of unmanned underwater vehicles

Operations and control of unmanned underwater vehicle systems arediscussed in terms of systems and technologies, vehicles, operational deploymentsand concepts of operation. The notions underlying the specification of single vehicleoperations are contrasted to new concepts of operation to illustrate the challengesthey pose to control engineering. New research directions are discussed in thecontext of the theories and techniques from dynamic optimization and computerscience. The overall discussion is done in the context of the activities of theUnderwater Systems and Technology Laboratory from Porto University

Elemental abundances of intermediate age open cluster NGC 3680

We present a new abundance analysis of the intermediate age Galactic open cluster NGC 3680, based on high resolution, high signal-to-noise VLT/UVES spectroscopic data. Several element abundances are presented for this cluster for the first time, but most notably we derive abundances for the light and heavy s-process elements Y, Ba, La, and Nd. The serendipitous measurement of the rare-earth r-process element Gd is also reported. This cluster exhibits a significant enhancement of Na in giants as compared to dwarfs, which may be a proxy for an O to Na anti-correlation as observed in Galactic globular clusters but not open clusters. We also observe a step-like enhancement of heavy s-process elements towards higher atomic number, contrary to expectations from AGB nucleosynthesis models, suggesting that the r-process played a significant role in the generation of both La and Nd in this clusterComment: 8 pages, 6 figures, accepted for publication in MNRA