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Registros recuperados: 17
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An overview on the Brazilian orange juice production chain Rev. Bras. Frutic.
Santos,Renato Marcio dos; Nääs,Irenilza de Alencar; Mollo Neto,Mario; Vendrametto,Oduvaldo.
Brazil is the world's largest producer of oranges and uses more than 70% of the harvested fruits in the production of juices. The amount of processed orange is growing about 10% per year, confirming the trend of the Brazilian citrus for juice production. This research aimed to investigate the Brazilian orange juice production chain from 2005 to 2009. Data from the amount of frozen juice produced and exported, international price of orange juice, and intermediate transactions were assessed in order to make possible selection of all interveners involved in the chain. The study using the Social Network Analysis (SNA) showed that the densest relationships in the network are from exporters to importers and from orange growers to the orange processing industry....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Network analysis; SNA; Production chain; Orange production.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452013000100025
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Biogeography Revisited with Network Theory: Retracing the History of Hydrothermal Vent Communities ArchiMer
Moalic, Yann; Desbruyeres, Daniel; Duarte, Carlos M.; Rozenfeld, Alejandro F.; Bachraty, Charleyne; Arnaud-haond, Sophie.
Defining biogeographic provinces to understand the history and evolution of communities associated with a given kind of ecosystem is challenging and usually requires a priori assumptions to be made. We applied network theory, a holistic and exploratory method, to the most complete database of faunal distribution available on oceanic hydrothermal vents, environments which support fragmented and unstable ecosystems, to infer the processes driving their worldwide biogeography. Besides the identification of robust provinces, the network topology allowed us to identify preferential pathways that had hitherto been overlooked. These pathways are consistent with the previously proposed hypothesis of a role of plate tectonics in the biogeographical history of...
Tipo: Text Palavras-chave: Biogeography; Deep sea ecology; Hydrothermal vents; Network analysis; Systems biology.
Ano: 2012 URL: http://archimer.ifremer.fr/doc/00063/17400/15164.pdf
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Co-expression network analysis identifies genes associated with iron content in bovine muscle. Repositório Alice
DINIZ, W. J. da S.; CESAR, A. S. M.; GEISTLINGER, L.; TIZIOTO, P. C.; OLIVEIRA, P. S. N. de; AFONSO, J.; ROCHA, M. I. P.; LIMA, A. O. de; BUSS, C. E.; COUTINHO, L. L.; REGITANO, L. C. de A..
Editores: Luiz Lehmann Coutinho, ESALQ/USP; Luciana Correia de Almeida Regitano, Embrapa Pecuária Sudeste; Gerson Barreto Mourão, ESALQ/USP; Aline Silva Mello Cesar, ESALQ/USP; Bárbara Silva Vignato, FZEA/USP; Mirele Daiana Poleti, ESALQ/USP; Wellison Jarles da Silva Diniz, UFSCar.
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Gene expression; Network analysis; Systems biology.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1075630
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Co-expression network analysis identifies genes associated with meat tenderness. Repositório Alice
DINIZ, W. J. da S.; CESAR, A. S. M.; GEISTLINGER, L.; TIZIOTO, P. C.; OLIVEIRA, P. S. N. de; AFONSO, J.; ROCHA, M. I. P.; LIMA, A. O. de; BUSS, C. E.; COUTINHO, L. L.; REGITANO, L. C. de A..
Tenderness is an important trait of meat quality and is known to be influenced by several factors including genetic composition.
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Gene expression; Network analysis; System biology.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1080848
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Consumers' Demand for Pork Quality: Applying Semantic Network Analysis AgEcon
Grebitus, Carola; Bruhn, Maike.
Consideration of consumers' demand for food quality entails several aspects. Quality itself is a complex and dynamic concept, and constantly evolving technical progress may cause changes in consumers' judgment of quality. To improve our understanding of the factors influencing the demand for quality, food quality must be defined and measured from the consumer's perspective (Cardello, 1995). The present analysis addresses the issue of food quality, focusing on pork-the food that respondents were concerned about. To gain insight into consumers' demand, we analyzed their perception and evaluation and focused on their cognitive structures concerning pork quality. In order to more fully account for consumers' concerns about the origin of pork, in 2004 we...
Tipo: Working or Discussion Paper Palavras-chave: Cognitive structures; Concept mapping; Food quality; Network analysis; Semantic networks; Spreading activation network model; Food Consumption/Nutrition/Food Safety; Livestock Production/Industries.
Ano: 2006 URL: http://purl.umn.edu/18402
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Diversity and stability of an estuarine trophic network ArchiMer
Lobry, Jeremy; David, V; Pasquaud, S; Lepage, M; Sautour, B; Rochard, E.
Estuarine areas provide highly valuable ecosystem benefits for human populations, despite being under intense demographic, economic and ecological pressures. Hence, an understanding of the structure and function of estuarine ecosystems is essential for understanding the persistence and stability of these ecosystems and their response to perturbations. This study synthesises available data and knowledge about the Gironde estuary (SW France) in a mass-balanced trophic model to illustrate potential key patterns in the functioning of the estuarine ecosystem and key elements of its stability. In order to evaluate the total direct and indirect impact on the whole community of the 2 main sources of anthropogenic perturbations in the estuarine area, mortalities...
Tipo: Text Palavras-chave: Gironde estuary; Ecopath; Diversity; Stability; Network analysis; Food web; Estuarine ecosystem.
Ano: 2008 URL: http://archimer.ifremer.fr/doc/2008/publication-4290.pdf
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EDENetworks: A user-friendly software to build and analyse networks in biogeography, ecology and population genetics ArchiMer
Kivela, Mikko; Arnaud-haond, Sophie; Saramaki, Jari.
The recent application of graph-based network theory analysis to biogeography, community ecology and population genetics has created a need for user-friendly software, which would allow a wider accessibility to and adaptation of these methods. EDENetworks aims to fill this void by providing an easy-to-use interface for the whole analysis pipeline of ecological and evolutionary networks starting from matrices of species distributions, genotypes, bacterial OTUs or populations characterized genetically. The user can choose between several different ecological distance metrics, such as Bray-Curtis or Sorensen distance, or population genetic metrics such as FST or Goldstein distances, to turn the raw data into a distance/dissimilarity matrix. This matrix is...
Tipo: Text Palavras-chave: Biogeography; Biological communities; Graph theory; Microbial ecology; Network analysis; Population genetics.
Ano: 2015 URL: http://archimer.ifremer.fr/doc/00197/30853/29217.pdf
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Local perceptions on social-ecological dynamics in Latin America in three community-based natural resource management systems Ecology and Society
Several examples of community-based natural resource management in Latin American social-ecological systems exist in which communities control the management of common-pool resources. Understanding community perceptions of the performance of these systems is essential to involve communities in sustainable management strategies. In this analysis of three areas in Colombia, Mexico, and Argentina, we analyzed the local perceptions of the social and environmental challenges faced by these social-ecological systems and how these challenges and drivers affect their resilience. To do this, we combined prospective structural analysis to unravel stakeholders’ perceptions of each system’s functioning along with network analysis to assess...
Tipo: Peer-Reviewed Reports Palavras-chave: Argentina; Colombia; Common-pool resources; Environmental challenges; Governance; Mexico; Network analysis; Ostrom; Prospective structural analysis; Social-ecological resilience.
Ano: 2015
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Management Conflicts in Cameroonian Community Forests Ecology and Society
Cameroonian community forests were designed and implemented to meet the general objectives of forest management decentralization for democratic and community management. The spread of management conflicts all over the country has shown that these broad expectations have not been met. We describe conflicts occurring in 20 community forests by types of actors and processes involved. We argue that a number of external (community vs. external actors) and internal (intra-community) conflicts are part of the causes blocking the expected outcome of Cameroonian community forests, fostering bad governance and loss of confidence. Rent appropriation and control of forest resources appear as systemic or generalized conflicts. While community forest support projects...
Tipo: Peer-Reviewed Reports Palavras-chave: Cameroon; Common pool resources management; Community forests; Network analysis; Social conflicts.
Ano: 2011
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Modeling the impact of oyster culture on a mudflat food web in Marennes-Oleron Bay (France) ArchiMer
Leguerrier, D; Niquil, Nathalie; Petiau, A; Bodoy, Alain.
We used a carbon-based food web model to investigate the effects of oyster cultivation on the ecosystem of an intertidal mudflat. A previously published food web model of a mudflat in Marennes-Oleron Bay, France, was updated with revised parameters, and a realistic surface area and density of existing oyster cultures on the mudflat. We developed 2 hypothetical scenarios to estimate the impact of oyster cultivation on the food web structure of the ecosystem: one with no oysters, the other with a doubled area devoted to cultivated oysters in the bay. Oysters are direct trophic competitors of other filter feeders, and their presence modifies benthic-pelagic coupling by forcing a shift from pelagic consumers to benthic consumers. Increasing the surface area of...
Tipo: Text Palavras-chave: Carbon flux; Inverse analysis; Food web; Network analysis; Bivalve culture.
Ano: 2004 URL: http://archimer.ifremer.fr/doc/00000/10816/7583.pdf
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Network analysis and inter-ecosystem comparison of two intertidal mudflat food webs (Brouage Mudflat and Aiguillon Cove, SW France) ArchiMer
Leguerrier, D; Degre, Delphine; Niquil, N.
Network analysis was used to analyse steady-state models of the food webs of two intertidat mudflat ecosystems: Aiguillon Cove and Brouage Mudflat, on the South-Western Atlantic Coast of France. The aim was to highlight emergent properties of food-web functioning in these two ecosystems and to compare these properties with other coastal ecosystems. Both ecosystems imported detritus in parallel to a high benthic primary production. They were characterised by a high diversity of resources. Both also exported living material, leading to a high quality production, quantified as export of Exergy. This export was mainly composed of cultivated bivalves during the cold season for Brouage Mudflat, and of the migration of grazing fish in Aiguillon Cove during the...
Tipo: Text Palavras-chave: Atlantic coast; Intertidal mudflat; Network analysis; Inverse analysis; Ecosystem comparison; Food web.
Ano: 2007 URL: http://archimer.ifremer.fr/doc/2007/publication-3696.pdf
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New responsibilities of agriculture: structural differences in stakeholder networks and intentions towards climate change abatement strategies in peatland AgEcon
Hübner, Rico; Kantelhardt, Jochen.
Agriculture is required to fulfil the needs and wants of society in a variety of fields: food supply, environmental services, landscape preservation and finally: climate mitigation. Using the example of land-use change in peatland in order to create possibilities for greenhouse-gas reduction, a survey about the intentions and future expectations of stakeholders was undertaken. The underlying network structure of these stakeholders in three representative peatland areas of Germany was determined and compared. The results show that considerable differences exist in the degree of knowledge about climate change and in the willingness to cooperate. Depending on the area studied, the most influential political entities are different and thus require different...
Tipo: Conference Paper or Presentation Palavras-chave: Land-use in peatland areas; Network analysis; Climate change mitigation.; Land Economics/Use; D83; D85; L31; Q54..
Ano: 2009 URL: http://purl.umn.edu/51059
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Numerical analysis of the food web of an intertidal mudflat ecosystem on the Atlantic coast of France ArchiMer
Leguerrier, Delphine; Niquil, Nathalie; Boileau, N; Rzeznik, J; Sauriau, Pierre-guy; Le Moine, Olivier; Bacher, Cedric.
Food web modelling is an ideal way to describe ecosystems, because it accounts for the totality of the relationships between its various components. One difficulty of such an approach, however, lies in the lack of data and information about some ecological relationships, resulting in under-defined systems. Inverse analysis can serve to complete steady-state food webs where the number of direct flow measurements is insufficient relative to the actual number of flows. We applied this method to the intertidal mudflat ecosystem of Brouage (eastern Marennes-Oleron Bay, SW France) and estimated the annual average carbon flows between the compartments of a coupled benthic and pelagic trophic food web from primary producers (microphytobenthos and phytoplankton) to...
Tipo: Text Palavras-chave: Network analysis; Food web; Inverse analysis; Carbon flow.
Ano: 2003 URL: http://archimer.ifremer.fr/doc/2003/publication-3134.pdf
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Research on ecosystem services in Brazil: a systematic review. Repositório Alice
PARRON, L. M.; FIDALGO, E. C. C.; LUZ, A. P.; CAMPANHA, M. M.; TURETTA, A. P. D.; PEDREIRA, B. da C. C. G.; PRADO, R. B..
Estudos com a abordagem de serviços ecossistêmicos (ES) desenvolvidos no Brasil com base no quadro da Avaliação de Ecossistemas do Milênio (MEA) variam desde a avaliação quantitativa e qualitativa até o desenvolvimento de instrumentos econômicos para pagamento por serviços ecossistêmicos (PES) ou compensação por sua manutenção, principalmente de serviços hidrológicos. Para sintetizar a atual produção de conhecimento e a estrutura de ensino em ES e também fornecer uma base para futuras pesquisas no Brasil, nós realizamos uma revisão sistemática de publicações sobre ES e uma pesquisa sobre a disponibilidade de cursos de graduação e pós-graduação relacionados aos ES. Nossa revisão sistemática encontrou 282 publicações para o período 2006-2017, que incluiu...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Ecosystem services assessment; Hydrological payment for ecosystem services; Network analysis; Análises em rede; Serviço ecossistêmico; Avaliação; Serviço ecossistêmico hídrico; Pagamento.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1110342
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Scientific productivity and collaboration in viticulture and enology in Latin American countries Ciencia e Investigación Agraria
Aleixandre,José Luis; Bordeu,Edmundo; Aleixandre-Tudó,José Luis; Bolaños,Máxima; Aleixandre-Benavent,Rafael.
J.L. Aleixandre, E. Bordeu, J.L. Aleixandre-Tudó, M. Bolaños, and R. Aleixandre-Benavent. 2013. Scientific productivity and collaboration in viticulture and enology in Latin American countries. Cien. Inv. Agr. 40(2): 429-443. The aim of this study was to analyze the scientific activity of Latin American researchers in viticulture and oenology through bibliometric analyses of articles included in the Science Citation Index Expanded database for the period of 2006 to 2010. A total of 917 research articles were published in 364 domestic and international journals. We highlight the important growth in the number of research papers published during the period, especially in Brazil, Argentina and Chile, as well as an increasing number of international...
Tipo: Journal article Palavras-chave: Impact factor; Latin American countries; Network analysis; Scientific collaboration; Scientific productivity; Viticulture and enology.
Ano: 2013 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202013000200017
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The concept of population in clonal organisms: mosaics of temporally colonized patches are forming highly diverse meadows of Zostera marina in Brittany ArchiMer
Becheler, Ronan; Diekmann, O.; Hily, Christian; Moalic, Yann; Arnaud-haond, S..
Seagrasses structure some of the world's key coastal ecosystems presently in decline due to human activities and global change. The ability to cope with environmental changes and the possibilities for shifts in distribution range depend largely on their evolvability and dispersal potential. As large-scale data usually show strong genetic structure for seagrasses, finer-grained work is needed to understand the local processes of dispersal, recruitment and colonization that could explain the apparent lack of exchange across large distances. We aimed to assess the fine-grained genetic structure of one of the most important and widely distributed seagrasses, Zostera marina, from seven meadows in Brittany, France. Both classic population genetics and network...
Tipo: Text Palavras-chave: Clonality; Dispersal; Ecotype; Network analysis; Population; Zostera marina.
Ano: 2010 URL: http://archimer.ifremer.fr/doc/00006/11690/8499.pdf
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Theories of the deep: combining salience and network analyses to produce mental model visualizations of a coastal British Columbia food web Ecology and Society
Levine, Jordan; Institute for Resources, Environment and Sustainability, University of British Columbia; jlevine@interchange.ubc.ca; Muthukrishna, Michael; Department of Human Evolutionary Biology, Harvard University; Department of Social Psychology, London School of Economics; muthukrishna@fas.harvard.edu; Chan, Kai M. A.; Institute for Resources, Environment and Sustainability, University of British Columbia; kaichan@ires.ubc.ca; Satterfield, Terre; Institute for Resources, Environment and Sustainability, University of British Columbia; terre.satterfield@ires.ubc.ca.
Arriving at shared mental models among multiple stakeholder groups can be crucial for successful management of contested social-ecological systems (SES). Academia can help by first eliciting stakeholders’ initial, often tacit, beliefs about a SES, and representing them in useful ways. We demonstrate a new recombination of techniques for this purpose, focusing specifically on tacit beliefs about food webs. Our approach combines freelisting and sorting techniques, salience analysis, and ultimately network analysis, to produce accessible visualizations of aggregate mental models that can then be used to facilitate discussion or generate further hypotheses about cognitive drivers of conflict. The case study we draw upon to demonstrate this technique...
Tipo: Peer-Reviewed Reports Palavras-chave: British Columbia; Food webs; Mental models; Network analysis; Salience analysis.
Ano: 2015
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