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Desaparecimento e morte de abelhas no brasil, registrados no aplicativo bee alert
Get PDFTwo major problems in today beekeeping are the mass death and CCD (Colony
Collapse Disorder) of bees, which are causing the world population decline of these species.
In March 2014, an online survey was launched in order to assess the evolution of bee mass
death and CCD events in Brazil. Colony losses happened from January 1st, 2013 to December
31st, 2016 were accepted to be posted in a web survey hosted in <http://www.nobeenofood.
com/beealert>, as well as in apps. for smartphones and tablets, from interested collaborators
to make their registrations. 247 qualified, confirmed and validated participants completed the
questionnaires and were accepted to compose the BEE ALERT application database in that
period. During visits to these apiaries, 38 dead honeybee samples were collected for analyses
of pesticide residues by means of mass spectrometry (UHPLC-MS/MS). Statistical analysis
showed that pesticides are reported as the main cause of mass deaths and CCD in the country.
Total colony loss calculated for the period (2013-2016) was 52.2% with (95% CI 48.3-56.0%)
and mean colony loss was 62.0% with (95% CI 57.9-66.1%). Neonicotinoids and fipronil lead
pesticide lists (37.7%) and São Paulo state holds 47% of honeybee casualties in Brazil.
Toxicological analyses showed multiple contamination with higher indices by fipronil with
frequency of 68.4% and amplitude of (0.5-23.539,7 ng/g), thiamethoxam 42.1% and (0.6-13.6
ng/g), dinotefuran 42.1% and (0.6-205.0 ng/g), imidacloprid 28.9% and (2.4-16.2 ng/g),
nitenpyram 5.3% and (3.8 -7.4 ng/g), acetamiprid 5.3% and (1.3-2.1 ng/g) and thiacloprid
2.6% (1.6 ng/g). Neonicotinoids and fipronil residues had higher frequencies and amplitude in
honeybees collected near sugarcane plantations and orange orchards in northwest São Paulo
and other agro industrial rural landscapes. Africanized honeybee (Apis mellifera) and the
native bee jataí (Tetragonisca angustula) were the most harmed species. These systemic
pesticides are the main mechanisms of mass death and disappearance of bees in Brazil,
according to this researchDois grandes problemas apicultura atual são a morte massiva e o desaparecimento
ou CCD (Colony Collapse Disorder) das abelhas, que estão causando o declínio populacional
mundial dessas espécies. Em março de 2014, uma pesquisa online foi lançada na internet com
o objetivo de avaliar a evolução dessas ocorrências no Brasil. Os casos ocorridos entre 1º de
janeiro de 2013 até 31 de dezembro de 2016 puderam ser armazenados em um banco de dados
eletrônico hospedado no website , bem
como em aplicativos para smartphones e tablets, para que os colaboradores interessados
fizessem seus registros. Um total de 247 participantes qualificados, confirmados e validados
concluíram os questionários e foram aceitos para compor o banco de dados do aplicativo BEE
ALERT nesse período. Em visitas a esses apiários, 38 amostras de abelhas mortas puderam ser
coletadas para análises de resíduos de agrotóxicos por espectrometria de massas (UHPLCMS/
MS). As análises estatísticas mostraram que os agrotóxicos são reportados como os
principais responsáveis pelas mortes em massa e CCD no país. A perda total de colônias
calculada para o período (2013–2016) foi de 52,2% com (95% IC 48,3–56,0%) e perda média
de 62,0% com (95% IC 57,9–66,1%). Os neonicotinóides e o fipronil lideram a lista dos
agrotóxicos com 37,7% dos casos e o estado de São Paulo detém 47% dos registros de mortes
e desaparecimento de colônias de abelhas no Brasil. As análises químicas mostraram
contaminações múltiplas com maiores índices para o fipronil com frequência de 68,4% e
amplitude de (0,5–23.539,7 ng/g), tiametoxam 42,1% e (0,6–13,6 ng/g), dinotefuran 42,1% e
(0,6–205,0 ng/g), imidaclopride 28,9% e (2,4–16,2 ng/g), nitenpiram 5,3% e (3,8–7,4 ng/g),
acetamipride 5,3% e (1,3–2,1 ng/g) e tiaclopride 2,6% (1,6 ng/g). Os resíduos de
neonicotinóides e fipronil tiveram maiores frequências e amplitudes em abelhas coletadas
próximas a plantações de cana-de-açúcar e pomares de laranja no noroeste de São Paulo e
outras regiões agroindustriais do país. A abelha africanizada (Apis mellifera) e a abelha nativa
jataí (Tetragonisca angustula) são as espécies mais prejudicadas. Esses agrotóxicos
sistêmicos são os principais mecanismos de morte em massa e desaparecimento das abelhas
no Brasil, segundo esta pesquisaCoordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPE
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Trends in beekeeping and honey bee colony losses in Latin America
No full textFil: Requier, Fabrice. Universidad Nacional de Río Negro. Sede Andina; Argentina.Fil: Antúnez, Karina. Instituto de Investigaciones Biológicas Clemente Estable; Uruguay.Fil: Morales, Carolina L. Universidad Nacional del Comahue; Argentina.Fil: Aldea Sánchez, Patricia. Facultad de Ciencias de la Universidad Mayor; Chile.Fil: Castilhos, Dayson. Universidade Federal Rural do Semi-Arido, Brasil.Fil: Garrido, Paula M. Universidad Nacional de Mar del Plata; Argentina.Fil: Giacobino, Agostina. Consejo Nacional de Investigaciones Científicas y Técnicas e Instituto Nacional de Tecnología Agropecuaria; Argentina.Fil: Reynaldi, Francisco J. Universidad Nacional de La Plata y Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.Fil: Rosso Londoño, Juan M. Reserva Natural Hacienda Agroecológica El Paraíso y Universidad Distrital Francisco José de Caldas; Colombia.Fil: Santos, Estela. Comisión Honoraria de Desarrollo Apícola; Uruguay.Fil: Garibaldi, Lucas Alejandro. Universidad Nacional de Río Negro. Sede Andina; Argentina.trueOver the past decade, several countries have carried out monitoring programs of managed honey bee colonies, which suggest beekeeping difficulties, with high colony loss rates all over the world. Although Latin America plays a major role in the global honey supply, information about trends in beekeeping activities and honey bee colony losses are lacking. Using the Food and Agriculture Organization of the United Nations (FAO) dataset and a synthesis of unpublished data of colony losses survey carried out over the last 7 years, we reveal a worrying situation of the beekeeping in this region. The Latin American trends in honey production and beehive numbers are drifting from the global pattern, and several high colony loss rates were registered in this region. These results reveal the presence of beekeeping difficulties in Latin America. However, the variability in methods of colony loss survey across initiatives prevent proper conclusion on loss rates. Efforts are needed to adapt, centralize and standardize methods to monitor honey bee health and colony losses across countries in Latin America, the main objective of the “colony losses” working group at the Latin-American Society for Bee Research, SOLATINA, a large-scale platform created in 2017 to coordinate bee research programs in Latin America
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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