Abnormal average increase in sea surface temperature may promote the first documented mortality event of a marine sponge in the Southeastern Brazil / Aumento na temperatura média do mar pode ter causado o primeiro evento registrado de mortalidade de esponjas marinhas no Sudeste do Brasil

Abstract Frequent heat waves and mass mortality events on marine biota are positively correlated to ocean warming. Although literature has indicated some species of marine sponges, and some oceanic regions, like the Brazilian Exclusive Economic Zone, may be less affected or seem to be more resilient under future scenarios of climate changes, few studies have focused on the species responses on the climate change issue along Brazilian coast. This paradigm was undone throughout 2019 after an exceptional average increase of 2 °C in the sea surface temperature (SST) and on precipitation values since 2015 at Ilha Grande Bay (IGB, SE Brazil). The combination of SST and precipitation average increase possibly favored an environmental context for the unprecedented strong population decline and mass mortality rate of the marine sponge species Desmapsamma anchorata in the austral spring. The species used to be one of the most frequent benthic species at IGB however it was only recorded in 41.7% sites (n = 12). From 162 individuals recorded at Abraãozinho along 180 m rocky shore, 83 individuals (51.2%) were healthy, 74 (45.7%) were intensively covered by cyanobacteria and locally bleached, and five (3.1%) were completely bleached or died. Desmapsamma anchorata population deterioration in a biogeographic transition zone (Rio de Janeiro state) may reflect a shift in the marine community of IGB, opening space for opportunistic species establishment and coverage increase, since IGB has a high species turnover. The three-dimensionality, the shelter for several species, the high competitive ability and the potential to indicate polluted or not polluted areas make D. anchorata a key species for IGB monitoring in a climate change scenario.

Resumo Ondas de calor e eventos de mortalidade em massa da biota marinha são cada vez mais frequentes e estão positivamente correlacionados ao aquecimento do oceano. Embora a literatura tenha indicado que algumas espécies de esponjas marinhas e algumas regiões oceânicas, como a Zona Econômica Exclusiva do Brasil, podem ser menos afetadas ou serem mais resilientes em cenários futuros de mudanças climáticas, poucos estudos focaram na resposta das espécies à problemática das mudanças climáticas na costa brasileira. Esse paradigma foi desfeito em 2019 após um excepcional aumento médio de 2 °C na temperatura da superfície do mar e nos valores de precipitação, desde 2015 na Baía da Ilha Grande (BIG, SE Brasil). Essa combinação de fatores possivelmente favoreceu um contexto ambiental sem precedentes, levando ao forte declínio populacional e alta taxa de mortalidade da esponja marinha Desmapsamma anchorata na primavera austral. A espécie costuma ser uma das espécies bentônicas mais frequentes na BIG, mas só foi observada em 41,7% dos sítios (n = 12). De 162 indivíduos registrados em Abraãozinho ao longo de 180 m de costão rochoso, 83 indivíduos (51,2%) estavam saudáveis, 74 (45,7%) estavam cobertos por cianobactéria e localmente branqueados e cinco (3,1%) estavam completamente branqueados ou mortos. A deterioração da população de D. anchorata na zona de transição biogeográfica (estado do Rio de Janeiro) pode refletir em uma alteração na comunidade marinha da BIG, abrindo espaço para o estabelecimento de espécies oportunistas, uma vez que a BIG possui alto turnover. A tridimensionalidade, o abrigo a diversas espécies, a alta capacidade competitiva e o potencial de indicar áreas poluídas ou não tornam D. anchorata uma espécie chave no monitoramento da BIG em um cenário de mudanças climáticas.

Associação entre ondas de calor e mortalidade por doenças cardiovasculares nas capitais brasileiras / Association between heat waves and mortality from cardiovascular disease in brazilian capitals

As ondas de calor têm sido associadas a morbimortalidade por doenças do aparelho circulatório em diferentes locais, principalmente nos grupos considerados vulneráveis. Esta tese apresenta estudos sobre as características das ondas de calor e abordou seus efeitos nas doenças do aparelho circulatório nas capitais brasileiras no período de 2000 a 2016. O primeiro estudo teve como objetivo examinar a intensidade, a frequência e a duração dos eventos de ondas de calor nas capitais brasileiras, por meio das análises de séries temporais foi possível caracterizar a ocorrência das ondas de calor, os resultados mostraram que estão mais frequentes, duradouras e intensas e ocorrem durante todo o ano, inclusive no inverno em cidades das regiões Sudeste e Sul. O segundo estudo teve como objetivo identificar as capitais brasileiras que apresentaram desconforto térmico para população, por meio da caracterização do índice de calor. Os resultados mostraram que se utilizando as definições de temperatura aparente e conforto e desconforto térmico do diagrama do conforto humano, na maioria das capitais foram constatadas condições de desconforto para a saúde humana. Algumas capitais localizadas no Sudeste e no Sul apresentaram condições definidas por conforto térmico. O terceiro estudo teve como objetivo estimar os efeitos de ondas de calor na mortalidade do aparelho circulatório no município do Rio de Janeiro no ano de 2010. A análise de séries temporais foi utilizada para estimar o percentual do Risco Relativo (%RR) do efeito das ondas de calor na mortalidade de pessoas adultas a partir de ≥ 30 anos de idade. Os resultados deste estudo evidenciaram o aumento do %RR nas mortalidades por DAC associadas às ondas de calor no município do Rio de Janeiro. O quarto estudo teve como objetivo estimar os efeitos de ondas de calor na mortalidade por doenças do aparelho cardiovascular nas capitais brasileiras, a análise de séries temporais foi utilizada para estimar o percentual do Risco Relativo (%RR) do efeito das ondas de calor na mortalidade de pessoas adultas ≥ 30 anos de idade. Os resultados indicam uma associação entre ondas de calor e a mortalidade por doenças cerebrovasculares e doenças isquêmicas do coração na população adulta. Os achados deste conjunto de estudo permitem concluir que as ondas de calor estão mais frequentes, intensas e duradouras nas capitais brasileiras e, as doenças do aparelho circulatório estão associadas com este fenômeno.

Heat waves have been associated with circulatory disease morbidity and mortality in different locations, especially in groups considered vulnerable. This thesis present studies on the characteristics of heat waves and addressed its effects on circulatory diseases in Brazilian capitals from 2000 to 2016. The first study aimed to examine the intensity, frequency and duration of heat wave events in the Brazilian capitals, through temporal series analysis, it was possible to characterize the occurrence of heat waves, the results showed that they are more frequent, lasting and intense and occur throughout the year, including winter in cities in the Southeast and South regions. The second study aimed to identify the Brazilian capitals that presented thermal discomfort for the population, through the characterization of the heat index. The results showed that using the apparent temperature definitions and comfort and thermal discomfort of the human comfort diagram, most capitals were found conditions of discomfort for human health. Some capitals located in the Southeast and South had conditions defined by thermal comfort. The third study aimed to estimate the effects of heat waves on the mortality of the circulatory system in the municipality of Rio de Janeiro in 2010. Time series analysis was used to estimate the percentage of relative risk (%RR) of the effect of heat waves on adult mortality from ≥ 30 years of age. The results of this study showed the increase of %RR in DAC mortality associated with heat waves in the municipality of Rio de Janeiro. The fourth study aimed to estimate the effects of heat waves on mortality from cardiovascular disease in Brazilian capitals, timely series analysis was used to estimate the percentage of relative risk (%RR) of the effect of heat waves on mortality of adults ≥ 30 years of age. The results indicate an association between heat waves and mortality from cerebrovascular diseases and ischemic heart disease in the adult population. The findings of this study set allow you to conclude that heat waves are more frequent, intense and lasting in Brazilian capitals and circulatory diseases are associated with this phenomenon.

Analysis of a Community-based Intervention to Reduce Heat-related Illness during Heat Waves in Licheng, China: a Quasi-experimental Study / 生物医学与环境科学（英文）

<p><b>OBJECTIVE</b>To reduce health-related threats of heat waves, interventions have been implemented in many parts of the world. However, there is a lack of higher-level evidence concerning the intervention efficacy. This study aimed to determine the efficacy of an intervention to reduce the number of heat-related illnesses.</p><p><b>METHODS</b>A quasi-experimental design was employed by two cross-sectional surveys in the year 2014 and 2015, including 2,240 participants and 2,356 participants, respectively. Each survey was designed to include one control group and one intervention group, which conducted in Licheng, China. A representative sample was selected using a multistage sampling method. Data, collected from questionnaires about heat waves in 2014 and 2015, were analyzed using a difference-in-difference analysis and cost effectiveness analysis. Outcomes included changes in the prevalence of heat-related illnesses and cost-effectiveness variables.</p><p><b>RESULTS</b>Relative to the control participants, the prevalence of heat-related illness in the intervention participants decreased to a greater extent in rural areas than in urban areas (OR=0.495 vs. OR=1.281). Moreover, the cost-effectiveness ratio in the intervention group was less than that in the control group (US$15.06 vs. US$15.69 per participant). Furthermore, to avoid one additional patient, the incremental cost-effectiveness ratio showed that an additional US$14.47 would be needed for the intervention compared to when no intervention was applied.</p><p><b>CONCLUSION</b>The intervention program may be considered a worthwhile investment for rural areas that are more likely to experience heat waves. Meanwhile, corresponding improving measures should be presented towards urban areas. Future research should examine whether the intervention strategies could be spread out in other domestic or international regions where heat waves are usually experienced.</p>

The Effects of Temperature on Heat-related Illness According to the Characteristics of Patients During the Summer of 2012 in the Republic of Korea / 예방의학회지

OBJECTIVES: This study was conducted to investigate the relationship between heat-related illnesses developed in the summer of 2012 and temperature. METHODS: The study analyzed data generated by a heat wave surveillance system operated by the Korea Centers for Disease Control and Prevention during the summer of 2012. The daily maximum temperature, average temperature, and maximum heat index were compared to identify the most suitable index for this study. A piecewise linear model was used to identify the threshold temperature and the relative risk (RR) above the threshold temperature according to patient characteristics and region. RESULTS: The total number of patients during the 3 months was 975. Of the three temperature indicators, the daily maximum temperature showed the best goodness of fit with the model. The RR of the total patient incidence was 1.691 (1.641 to 1.743) per 1degrees C after 31.2degrees C. The RR above the threshold temperature of women (1.822, 1.716 to 1.934) was greater than that of men (1.643, 1.587 to 1.701). The threshold temperature was the lowest in the age group of 20 to 64 (30.4degrees C), and the RR was the highest in the > or =65 age group (1.863, 1.755 to 1.978). The threshold temperature of the provinces (30.5degrees C) was lower than that of the metropolitan cities (32.2degrees C). Metropolitan cities at higher latitudes had a greater RR than other cities at lower latitudes. CONCLUSIONS: The influences of temperature on heat-related illnesses vary according to gender, age, and region. A surveillance system and public health program should reflect these factors in their implementation.