One sixth of Amazonian tree diversity is dependent on river floodplains.

Amazonia's floodplain system is the largest and most biodiverse on Earth. Although forests are crucial to the ecological integrity of floodplains, our understanding of their species composition and how this may differ from surrounding forest types is still far too limited, particularly as changing inundation regimes begin to reshape floodplain tree communities and the critical ecosystem functions they underpin. Here we address this gap by taking a spatially explicit look at Amazonia-wide patterns of tree-species turnover and ecological specialization of the region's floodplain forests. We show that the majority of Amazonian tree species can inhabit floodplains, and about a sixth of Amazonian tree diversity is ecologically specialized on floodplains. The degree of specialization in floodplain communities is driven by regional flood patterns, with the most compositionally differentiated floodplain forests located centrally within the fluvial network and contingent on the most extraordinary flood magnitudes regionally. Our results provide a spatially explicit view of ecological specialization of floodplain forest communities and expose the need for whole-basin hydrological integrity to protect the Amazon's tree diversity and its function.

Tree mode of death and mortality risk factors across Amazon forests.

The carbon sink capacity of tropical forests is substantially affected by tree mortality. However, the main drivers of tropical tree death remain largely unknown. Here we present a pan-Amazonian assessment of how and why trees die, analysing over 120,000 trees representing > 3800 species from 189 long-term RAINFOR forest plots. While tree mortality rates vary greatly Amazon-wide, on average trees are as likely to die standing as they are broken or uprooted-modes of death with different ecological consequences. Species-level growth rate is the single most important predictor of tree death in Amazonia, with faster-growing species being at higher risk. Within species, however, the slowest-growing trees are at greatest risk while the effect of tree size varies across the basin. In the driest Amazonian region species-level bioclimatic distributional patterns also predict the risk of death, suggesting that these forests are experiencing climatic conditions beyond their adaptative limits. These results provide not only a holistic pan-Amazonian picture of tree death but large-scale evidence for the overarching importance of the growth-survival trade-off in driving tropical tree mortality.

GOOD VISUAL OUTCOME IN A BILATERAL MULTIFOCAL SYPHILITIC CHORIORETINITIS, DESPITE LATE DIAGNOSIS.

PURPOSE: To report a case of a good visual outcome in a patient with bilateral multifocal syphilitic chorioretinitis, despite the late diagnosis. METHODS: Ophthalmologic examination, multimodal imaging, including fundus photography, angiography, and optical coherence tomography. RESULTS: The authors describe a 47-year-old heterosexual man with a bilateral multifocal syphilitic chorioretinitis that was lately diagnosed and despite that had a good visual outcome. CONCLUSION: The diagnosis of ocular syphilis is a challenge; however, once it has been made, even lately, it is eminently treatable.

Compositional response of Amazon forests to climate change.

Most of the planet's diversity is concentrated in the tropics, which includes many regions undergoing rapid climate change. Yet, while climate-induced biodiversity changes are widely documented elsewhere, few studies have addressed this issue for lowland tropical ecosystems. Here we investigate whether the floristic and functional composition of intact lowland Amazonian forests have been changing by evaluating records from 106 long-term inventory plots spanning 30 years. We analyse three traits that have been hypothesized to respond to different environmental drivers (increase in moisture stress and atmospheric CO2 concentrations): maximum tree size, biogeographic water-deficit affiliation and wood density. Tree communities have become increasingly dominated by large-statured taxa, but to date there has been no detectable change in mean wood density or water deficit affiliation at the community level, despite most forest plots having experienced an intensification of the dry season. However, among newly recruited trees, dry-affiliated genera have become more abundant, while the mortality of wet-affiliated genera has increased in those plots where the dry season has intensified most. Thus, a slow shift to a more dry-affiliated Amazonia is underway, with changes in compositional dynamics (recruits and mortality) consistent with climate-change drivers, but yet to significantly impact whole-community composition. The Amazon observational record suggests that the increase in atmospheric CO2 is driving a shift within tree communities to large-statured species and that climate changes to date will impact forest composition, but long generation times of tropical trees mean that biodiversity change is lagging behind climate change.

Anestesia em paciente oncológico submetido à mastectomia - relato de caso / Anesthesia in cancer patient undergoing to mastectomy - case report

The choice of the ideal anesthetic protocol must consider a number of factors, providing minimum anesthetic time, little cardiopulmonary depression and management of anesthesia must keep vital signs and physiological parameters monitored. Patients with neoplasia are even more important, because, normally, middle-aged or elderly animals show changes who qualified him as patients with risk category III or IV. The present study reports the case of a female dog SRD 10-year-old carrier of breast cancer submitted to unilateral mastectomy, highlighting the importance of the anesthetic protocol used.

Mucocele em cães: relato de caso / Mucocele in dogs: case report

Mucoceles are benign pseudocystic lesions caused by the rupture or obstruction of the salivary glands and their matching excretory ducts. This disease leads to the accumulation of mucus in the connective tissue. Affected patients may be asymptomatic or present anorexia, getting vulnerable to secondary diseases. The recommended treatment is the surgical removal of the salivary gland and the connection of the involved duct; this process is essencial to avoid recurrences and to provide a favorable prognosis to the patient. Due to the fact that it is an unusual occurrence in dogs, this work has as objective to present a case report about the mucocele’s appearence in such species, achieving the definitive diagnosis by fine-needle aspiration cytology of the affected area.

Mucocele em cães: relato de caso / Mucocele in dogs: case report

Mucoceles are benign pseudocystic lesions caused by the rupture or obstruction of the salivary glands and their matching excretory ducts. This disease leads to the accumulation of mucus in the connective tissue. Affected patients may be asymptomatic or present anorexia, getting vulnerable to secondary diseases. The recommended treatment is the surgical removal of the salivary gland and the connection of the involved duct; this process is essencial to avoid recurrences and to provide a favorable prognosis to the patient. Due to the fact that it is an unusual occurrence in dogs, this work has as objective to present a case report about the mucoceles appearence in such species, achieving the definitive diagnosis by fine-needle aspiration cytology of the affected area.(AU)

Anestesia em paciente oncológico submetido à mastectomia - relato de caso / Anesthesia in cancer patient undergoing to mastectomy - case report

The choice of the ideal anesthetic protocol must consider a number of factors, providing minimum anesthetic time, little cardiopulmonary depression and management of anesthesia must keep vital signs and physiological parameters monitored. Patients with neoplasia are even more important, because, normally, middle-aged or elderly animals show changes who qualified him as patients with risk category III or IV. The present study reports the case of a female dog SRD 10-year-old carrier of breast cancer submitted to unilateral mastectomy, highlighting the importance of the anesthetic protocol used.(AU)

Intraretinal hemorrhage associated with visceral leishmaniasis / Hemorragia intrarretiniana associada à leishmaniose visceral

ABSTRACT Visceral Leishmaniasis, also know as Kala-azar, is a parasitic tropical disease caused by protozoa of the genus Leishmania donovani. It is an endemic disease in many countries. It affects approximately 1,5 million people every year, and when associated with mal-nutrition and co-infection it may be fatal. Fever, hepatosplenomegaly, and pancytopenia is its typical clinical picture. Ocular manifestations of Kalaazar are relatively rare and can affect either anterior or posterior segment of the eye. We report a patient with kala-azar presenting intraretinal hemorrhages that regress completely after the successful treatment for visceral leishmaniasis.

RESUMO Leishmaniose visceral, também conhecida como calazar é uma doença tropical parasitária, causada pelo protozoário do gênero Leishmania donovan uma doença endêmica em muitos países. Afeta aproximadamente 1,5 milhões de pessoas durante todo ano e quando associada à desnutrição e coinfecção pode ser fatal. Febre, hepatoesplenomegalia e pancitopenia e o quadro típico. Manifestações oculares são raras e podem afetar tanto o segmento anterior como o posterior do olho. Relatamos o caso de um paciente com calazar e hemorragia intrarretiniana que regrediu após tratamento para leishmaniose visceral.

Cultura da participação e da convergência na Copa do Mundo FIFA 2014: um estudo a partir de imagens compartilhadas no Twitter / Culture of participation and convergence in FIFA World Cup 2014: a study from photos shared on Twitter / Cultura de participación y convergencia en la Copa Mundial FIFA 2014: un estudio a partir de fotos compartidas en Twitter

A Copa do Mundo Fifa une a maior parte dos brasileiros sob a condição de torcedores, desde antes mesmo da chegada da televisão ao país. Participa-se, durante a Copa do Mundo, não só de evento esportivo, mas também midiático. Ao redor do campeonato, orbitam diversos tipos de narrativas: ufanistas, publicitárias, noticiosas e até mesmo políticas. O advento dos recursos participativos da internet tornou possível a mensuração direta da resposta do público a estas mensagens. Este artigo pretende analisar como se deu a repercussão das imagens sobre a Copa do Mundo na rede social Twitter, e a natureza deste conteúdo quanto à origem destas mídias: criação do público, montagens e remixes, produções publicitárias ou da mídia tradicional. Esta análise será realizada a partir das dez imagens mais compartilhadas na rede social durante a fase eliminatória do campeonato, identificadas a partir de metodologia desenvolvida pelo LABIC/UFES.

Fifa's World Cup gathers the majority of Brazilian population under the condition of supporters, even before television broadcasting started in the country. During the event, people participate not only of a sportive experience, but also of a mediatic phenomenon. Around the competition there are several kind of narratives: vainglorious, publicity, news and even politics. The advent of participatory resources the internet has made possible the direct measurement of the public response to these messages. This article analyzes how was the impact of images on the World Cup in the social network Twitter, the nature of the content and the origin of these media: creation of the public, remixes, advertising productions or traditional media. This analysis will be performed from the ten most shared images on the social network during the championship, identified from the methodology developed by LABIC / UFES.

La Copa Mundial de la FIFA une la mayoría de los brasileños sob la condición de hinchas, antes mismo de la televisión llegar en el país. Se participa, durante él Mundial, no sólo del evento desportivo, pero también mediático. Alrededor de la competición, orbitan diferentes tipos de narrativas: vanagloriosas, de la publicidad, noticiosas y até mismo políticas. Él advenimiento de los recursos participativos de la internet hizo posible la mensuración en directo de la respuesta del público a estas imágenes. Este artículo pretende analizar como fue la repercusión de las imágenes (fotografías, ilustraciones, montajes o frames de videos) sobre él Mundial en la red social Twitter y la naturaleza de este contenido cuanto a la origen de estos medios: creación del público, montajes, remixes, producciones publicitarias o de medios oficialistas. Este análisis será realizada a partir de las diez imágenes más compartidas en la red social durante la competición, identificadas a partir de la metodologia desarollada por el Laboratorio de Estudios de la Imágen y Cibercultura de la Universidade Federal do Espírito Santo.

Litterfall production in intact and selectively logged forests in southern of Amazonia as a function of basal area of vegetation and plant density / Produção de serrapilheira em florestas intactas e exploradas seletivamente no sul da Amazônia em função da área basal da vegetação e da densidade de plantas

Nutrient recycling in the forest is linked to the production and decomposition of litter, which are essential processes for forest maintenance, especially in regions of nutritionally poor soils. Human interventions in forest such as selecttive logging may have strong impacts on these processes. The objectives of this study were to estimate litterfall production and evaluate the influence of environmental factors (basal area of vegetation, plant density, canopy cover, and soil physicochemical properties) and anthropogenic factors (post-management age and exploited basal area) on this production, in areas of intact and exploited forest in southern Amazonia, located in the northern parts of Mato Grosso state. This study was conducted at five locations and the average annual production of litterfall was 10.6 Mg ha-1 year-1, higher than the values for the Amazon rainforest. There were differences in litterfall productions between study locations. Effects of historical logging intensity on litterfall production were not significant. Effects of basal area of vegetation and tree density on litterfall production were observed, highlighting the importance of local vegetation characteristics in litterfall production. This study demonstrated areas of transition between the Amazonia-Cerrado tend to have a higher litterfall production than Cerrado and Amazonia regions, and this information is important for a better understanding of the dynamics of nutrient and carbon cycling in these transition regions.

A capacidade de reaproveitamento de nutrientes pela floresta está ligada à produção e decomposição da serrapilheira, sendo estes processos essenciais para manutenção da floresta, especialmente em regiões de solos nutricionalmente pobres. Intervenções humanas na floresta como a extração seletiva de madeira, podem ter fortes impactos sobre esses processos. Os objetivos deste trabalho foram estimar a produção de serrapilheira e avaliar a influência de fatores ambientais (área basal da vegetação, densidade de plantas, abertura de dossel, atributos físico-químicos do solo) e antrópicos (idade pós-exploração e área basal explorada) sobre esta produção, em áreas de floresta intactas e exploradas no sul da Amazônia, norte do estado de Mato Grosso. Este estudo foi conduzido em cinco áreas e a produção média anual de serrapilheira foi de 10,6 Mg ha-1 ano-1, superior aos valores geralmente encontrados para a floresta amazônica. Houve diferença entre a produção de serrapilheira entre as áreas de estudo. Os efeitos do histórico de exploração madeireira e da intensidade de exploração não foram significativos sobre a produção de serrapilheira. Foi observado o efeito da área basal da vegetação e da densidade de árvores sobre a produção de serrapilheira, destacando a importância das características da vegetação local para a produção de serrapilheira. Este estudo demonstrou que áreas de transição entre Amazônia-Cerrado tendem a apresentar uma maior produção de serrapilheira que regiões típicas de Cerrado e Amazônia, e estas são informações importantes para uma melhor compreensão da dinâmica de ciclagem de nutrientes e carbono nestas regiões de transição.

Litterfall production in intact and selectively logged forests in southern of Amazonia as a function of basal area of vegetation and plant density / Produção de serrapilheira em florestas intactas e exploradas seletivamente no sul da Amazônia em função da área basal da vegetação e da densidade de plantas

Nutrient recycling in the forest is linked to the production and decomposition of litter, which are essential processes for forest maintenance, especially in regions of nutritionally poor soils. Human interventions in forest such as selecttive logging may have strong impacts on these processes. The objectives of this study were to estimate litterfall production and evaluate the influence of environmental factors (basal area of vegetation, plant density, canopy cover, and soil physicochemical properties) and anthropogenic factors (post-management age and exploited basal area) on this production, in areas of intact and exploited forest in southern Amazonia, located in the northern parts of Mato Grosso state. This study was conducted at five locations and the average annual production of litterfall was 10.6 Mg ha-1 year-1, higher than the values for the Amazon rainforest. There were differences in litterfall productions between study locations. Effects of historical logging intensity on litterfall production were not significant. Effects of basal area of vegetation and tree density on litterfall production were observed, highlighting the importance of local vegetation characteristics in litterfall production. This study demonstrated areas of transition between the Amazonia-Cerrado tend to have a higher litterfall production than Cerrado and Amazonia regions, and this information is important for a better understanding of the dynamics of nutrient and carbon cycling in these transition regions.(AU)

A capacidade de reaproveitamento de nutrientes pela floresta está ligada à produção e decomposição da serrapilheira, sendo estes processos essenciais para manutenção da floresta, especialmente em regiões de solos nutricionalmente pobres. Intervenções humanas na floresta como a extração seletiva de madeira, podem ter fortes impactos sobre esses processos. Os objetivos deste trabalho foram estimar a produção de serrapilheira e avaliar a influência de fatores ambientais (área basal da vegetação, densidade de plantas, abertura de dossel, atributos físico-químicos do solo) e antrópicos (idade pós-exploração e área basal explorada) sobre esta produção, em áreas de floresta intactas e exploradas no sul da Amazônia, norte do estado de Mato Grosso. Este estudo foi conduzido em cinco áreas e a produção média anual de serrapilheira foi de 10,6 Mg ha-1 ano-1, superior aos valores geralmente encontrados para a floresta amazônica. Houve diferença entre a produção de serrapilheira entre as áreas de estudo. Os efeitos do histórico de exploração madeireira e da intensidade de exploração não foram significativos sobre a produção de serrapilheira. Foi observado o efeito da área basal da vegetação e da densidade de árvores sobre a produção de serrapilheira, destacando a importância das características da vegetação local para a produção de serrapilheira. Este estudo demonstrou que áreas de transição entre Amazônia-Cerrado tendem a apresentar uma maior produção de serrapilheira que regiões típicas de Cerrado e Amazônia, e estas são informações importantes para uma melhor compreensão da dinâmica de ciclagem de nutrientes e carbono nestas regiões de transição.(AU)