Space-time patterns and drivers of migrant bird communities in coastal Piauí State, Brazil

Introduction: Migration is a natural phenomenon that includes annual movements of many bird species in response to seasonal cycles. With approximately one third of all living bird species, South America has an important avifauna, and many migrants land in Brazil at stopping points and wintering sites. Objective: To identify associations between migrant birds and coastal vegetation, and environmental influence of on migration. Methods: At 10 points along the coast of Piauí State, Brazil, we made visual censuses and mist net captures, between April 2009 and February 2016. Results: We identified 82 migrant bird species (13 orders; 28 families) that represented 41 intracontinental migrating species, 26 northern visiting species, 14 nomad species and one vagrant species. The richness peaks were at the beginning and end of both dry and rainy seasons, matching insolation and atmospheric pressure. There were spatial pattern differences among vegetation complexes. Chrysolampis mosquitus is an indicator of caatinga vegetation, Numenius phaeopus of wetland, Charadrius collaris of non-flooding fields, Rostrhamus sociabilis of forest-grassland transition, and Columbina picui of orchards. Despite differences in number and species composition within vegetation types, the temporal pattern in species richness was similar among flooded fields, non-flooded fields, and transition grassland categories. Conclusions: Migrant birds occupy specific environments during their permanence along the coast of Piauí State, with richness matching insolation and atmospheric pressure.

Introducción: La migración es un fenómeno natural que incluye los movimientos anuales de muchas especies de aves en respuesta a los ciclos estacionales. Con aproximadamente un tercio de todas las especies de aves conocidas, América del Sur tiene una avifauna importante y muchas aves migratorias tienen puntos de parada e invernada en Brasil. Objetivo: Identificar asociaciones entre las aves migratorias y la vegetación costera, y la influencia del medio ambiente en la migración. Métodos: En 10 puntos a lo largo de la costa del Estado de Piauí, Brasil, realizamos censos visuales y capturas con redes de niebla, entre abril 2009 y febrero 2016. Resultados: Identificamos 82 especies de aves migratorias (13 órdenes; 28 familias) que representaron 41 especies migratorias intracontinentales, 26 especies visitantes del norte, 14 especies nómadas y una especie vagante. Los picos de riqueza se dieron al principio y al final de las estaciones seca y lluviosa, coincidiendo con la insolación y la presión atmosférica. Hubo diferencias en el patrón espacial entre los complejos de vegetación. Chrysolampis mosquitus es un indicador de vegetación de caatinga, Numenius phaeopus de humedales, Charadrius collaris de campos que no se inundan, Rostrhamus sociabilis de transición bosque-pastizales y Columbina picui de huertos. A pesar de las diferencias en el número y composición de especies dentro de los tipos de vegetación, el patrón temporal en la riqueza de especies fue similar entre las categorías de campos inundados, campos no inundados y pastizales de transición. Conclusiones: Las aves migratorias ocupan ambientes específicos durante su permanencia a lo largo de la costa del estado de Piauí, con una riqueza acorde con la insolación y la presión atmosférica.

Transmisión del virus del dengue y su relación con factores climáticos durante los períodos intra e interepidémicos en Santo Domingo, República Dominican / Dengue Virus Transmission and its Relationship with Climatic Factors During Intra and Interepidemic Periodsin Santo Domingo, Dominican Republic

Introducción: Aedes spp. y la dinámica del virus del dengue está altamente influenciada por factores ambientales. Una relación detallada entre el clima y la enfermedad en los períodos inter e intra-epidémicos podrían beneficiar la vigilancia del dengue para optimizar la preparación y las políticas adecuadas de control de vectores. Métodos: se analizaron los informes de casos de dengue y las variables climáticas en Santo Domingo, República Dominicana, para determinar la correlación del período 2012- 2018 y los diferentes tiempos de retraso. Se llevó a cabo un análisis de regresión de dichas variables para comprender mejor las relaciones entre las tasas de incidencia del dengue y los cambios climáticos. Resultados: durante los brotes epidémicos, la temperatura (r = 0.73, p <0.001) y la humedad relativa (r = -0.2, p = 0.009) se correlacionan significativamente con la incidencia del dengue con un retraso de 9 semanas, el análisis de regresión muestra que la temperatura media (b = 62.401, p < 0.001), precipitación (b = 2.810, p <0.001) y humedad relativa (b = -5.462, p = 0.025) fueron predictores significativos. Durante los períodos inter-epidémico, la temperatura (r = 0.23, p <0.001) tuvo una correlación significativa con la incidencia del dengue con un retraso de 7 semanas, la humedad relativa (b = 1.454, p <0.05) y la temperatura media (b = 5.14, p <0.01) son predictores significativos de la cantidad de casos de dengue. La precipitación no se correlacionó significativamente con la incidencia del dengue. Conclusiones: existe una relación no lineal entre los factores climáticos y la incidencia del dengue. La infección por dengue depende del clima, y la temperatura parece jugar un papel importante en los factores climáticos.

Introduction: Aedes spp. and Dengue Virus dynamics are highly influenced by environmental factors. A detailed relationship between climate and disease in inter and intra-epidemic periods may benefit dengue surveillance, preparedness, and adequate vector control policies. Methods: Dengue case reports and climatic variables in Santo Domingo, Dominican Republic, were analyzed for climate variables correlation from the period 2012-2018 and varying lag times. Regression analysis of climatic variables was carried out to better understand significant correlations between dengue incidence rates and changes in climate. Results: During epidemic outbreaks, temperature (r = 0.73, p < 0.001) and relative humidity (r = -0.22, p = 0.009) demonstrated a significant correlation with dengue incidence. Our regression analysis demonstrates an increase 62.4 cases for each degree Celsius increased with a 9-week-lag. Regression analysis also demonstrated mean temperature (b= 62.401, p < 0.001), precipitation (b = 2.810, p < 0.001), and relative humidity (b = -5.462, p = 0.025) to be significant predictors. During inter-epidemic periods, temperature (r = 0.23, p < 0.001) had a significant correlation with dengue incidence with a 7-week-lag, which demonstrates that relative humidity (b = 1.454, p < 0.05), and mean temperature (b = 5.14, p < 0.01) are significant predictors of the quantity of dengue cases. Precipitation did not significantly correlate with dengue incidence. Conclusions: A non-linear relationship between climatic factors and dengue incidence exists in the Dominican Republic. Dengue infection is climate-dependent and temperature seems to play a significant role in climatic factors

Influence of climatic variables on the Aedes aegypti and Culex quinquefasciatus populations in Mato Grosso, Brazil

Abstract INTRODUCTION: Aedes aegypti and Culex quinquefasciatus are vector species responsible for the transmission of important arboviruses. METHODS: Adult mosquitoes were collected in the urban areas of four municipalities in Mato Grosso within 1 year. RESULTS: A total of 19,110 mosquitoes were collected. Among them, 16,578 (86,8%) were C. quinquefasciatus (44% female and 56% male); 2,483 (13%), A. (Stegomyia) aegypti (54% female and 46% male); and 49 (0,30%), from the genus Psorophora, Anopheles, Coquilettidia, and Sabethes. A significant correlation was observed between the number of mosquitoes from all species and dew point (female mosquitoes, p = 0.001; male mosquitoes, p = 0.001). CONCLUSIONS: The results of this study may be used as environmental indicators of mosquito populations.

Increase in the risk of snakebites incidence due to changes in humidity levels: A time series study in four municipalities of the state of Rondônia

Abstract INTRODUCTION: Snakebites represent a serious global public health problem, especially in tropical countries. In Brazil, the incidence of snakebites ranges from 19 to 22 thousand cases per 100000 persons annually. The state of Rondônia, in particular, has had an increasing incidence of snakebites. METHODS: A retrospective cross-sectional study on snakebites was conducted from January 2007 to December 2018. Brazil's Information System for Notifiable Diseases was queried for all snakebites reported in Porto Velho, Ariquemes, Cacoal, and Vilhena. Data on land surface temperatures during the day and night, precipitation, and humidity were obtained using the Google Earth Engine. A Bayesian time series model was constructed to describe the pattern of snakebites and their relationship with climate data. RESULTS: In total, 6326 snakebites were reported in Rondônia. Accidents were commonly caused by Bothrops sp. (n=2171, 81.80%). Snakebites most frequently occurred in rural areas (n=2271, 85.5%). Men, with a median age of 34 years (n=2101, 79.1%), were the most frequent bitten. Moderate clinical manifestation was the most common outcome of an accident (n=1101, 41.50%). There were clear seasonal patterns with respect to rainfall, humidity, and temperature. Rainfall and land surface temperature during the day or night did not increase the risk of snakebites in any city; however, changes in humidity increased the risk of snakebites in all cities. CONCLUSION: This study identified the population exposed to snakes and the influence of anthropic and climatic factors on the incidence of snakebites. According to climate data, changes in humidity increased the risk of snakebites.

Epidemiology of Legionella and Climatic Variables in Seoul, Korea

Legionella species are abundant in the built environment and are increasingly recognized as a cause of Legionnaires' disease (LD). As the number of cases of Legionnaires' disease acquired by local communities in the Seoul metropolitan area in Korea has been increased, there was concern that changes in environmental factors could affect disease outbreaks. We described the association between climatic variables and occurrence of legionellosis in Korea and Legionella detection rate in Seoul area. A total of 418 cases of legionellosis were reported between 2014 and 2017. There was a seasonal peak in summer. LD continuously occurred from early spring to winter every year and rapidly increased in summer. In the regression analysis, the primary variables of interest- PM2.5 (µg/m³), NO₂ (ppb), and a number of the date of issue O₃ warning were not significant except for average temperature (R²=0.8075). The Legionella detection rate in Seoul, Korea showed a trend similar to precipitation (P=0.708, ANOVA). A relatively high proportion of Legionella detection rate was shown, especially cooling tower (17.7%) and public bath (19.3%). This finding is in line with current understanding of the ecological profile of this pathogen and supports the assertion that legionellosis occurs through contamination of water sources.

Principales trattornos reproductivos en búfalasy vacas en hatos mixtos y de unna especie en el departamento de caquetá, Colombia / Main reproductiee disorders in uffaloes and cows in mixed herds and of one speecies in the department of caquetá, Cloombia

Con el objetivo de determinar los principales problemas reproductivos en vacas y búfalas, su frecuencia y la relación con variables climáticas, se seleccionaron 296 hembras bovinas (150 de rebaños mixtos y 146 de rebaños bovinos) y 238 hembras bubalinas (126 de mixtos y 112 de rebaños bubalinos). Se registraron la frecuencia de patologías reproductivas, los indicadores reproductivos entre 2010 y 2011, así como el promedio de las variables climáticas de la zona. El número de patologías reproductivas fue mayor en bovinos (n=11) que en los búfalos (n=5) y la repetición de celo fue la alteración más frecuente en ambas especies: 36.8% y 12.6% en bovinos y búfalos, respectivamente, con diferencia significativa (P < 0.05) respecto del resto de patologías, pero no entre tipos de hatos. La frecuencia de patologías disminuyó a medida que aumentó el número de partos en vacas, pero en el caso de las búfalas, las diferencias no fueron significativas. Entre las variables climáticas, sólo se encontró asociación directa entre el brillo solar y los partos de vacas y búfalas, así como entre la amplitud térmica y los partos en el caso de las búfalas (P < 0.05). Se concluye que las búfalas presentaron menor frecuencia y variedad de patologías reproductivas que las vacas y que, tanto la frecuencia de los partos como de las patologías, están asociadas con el brillo solar.

In order to determine the main reproductive problems in cows and buffaloes, their frequency and relationship to climatic variables, 296 bovine females (150 and 146 mixed herds cattle herds) and 238 buffaloes cows (126 and 112 mixed herds) were selected. For which the frequency of reproductive disorders, reproductive indicators between 2010 and 2011, and the average climatic variables were recorded in the area. The number of reproductive disorders was higher in cattle (n=11) than in buffaloes (n=5) and repeat breeding was the most frequent in both species: 36.8% and 12.6% in cattle and buffalo, respectively, with significant difference (P < 0.05) with other diseases but not between types of herds. The frequency of pathologies decreased as parity increased cow, but in buffaloes were not significant differences. Between climatic variables, only association between sun's brightness and calving in cows and buffaloes and thermal amplitude deliveries in the case of buffaloes (P < 0.05) was found. We conclude that the buffaloes had lower frequency and variety of pathologies than cows and that both the frequency of deliveries and pathologies are associated with sun's brightness.

Predicting geographic distributions of Phacellodomus species (Aves: Furnariidae) in South America based on ecological niche modeling / Predição das distribuições geográficas das espécies de Phacellodomus (Aves: Furnariidae) na América do Sul utilizando modelagem de nicho ecológico

Phacellodomus Reichenbach, 1853, comprises nine species of Furnariids that occur in South America in open and generally dry areas. This study estimated the geographic distributions of Phacellodomus species in South America by ecological niche modeling. Applying maximum entropy method, models were produced for eight species based on six climatic variables and 949 occurrence records. Since highest climatic suitability for Phacellodomus species has been estimated in open and dry areas, the Amazon rainforest areas are not very suitable for these species. Annual precipitation and minimum temperature of the coldest month are the variables that most influence the models. Phacellodomus species occurred in 35 ecoregions of South America. Chaco and Uruguayan savannas were the ecoregions with the highest number of species. Despite the overall connection of Phacellodomus species with dry areas, species such as P. ruber, P. rufifrons, P. ferrugineigula and P. erythrophthalmus occurred in wet forests and wetland ecoregions.

Phacellodomus Reichenbach, 1853 é composto por nove espécies de furnarídeos que ocorrem na América do Sul em áreas abertas e geralmente secas. Este estudo objetivou estimar as distribuições geográficas das espécies de Phacellodomus utilizando modelagem de nicho ecológico. Os modelos foram desenvolvidos com base em seis variáveis climáticas e 949 registros de ocorrência de oito espécies, utilizando o algoritmo Maxent. Maior adequabilidade climática para as espécies de Phacellodomus foi estimada em áreas abertas e secas. Áreas úmidas na Amazônia não foram muito favoráveis para a ocorrência dessas espécies. A precipitação anual e a temperatura mínima do mês mais frio foram as variáveis que mais influenciaram os modelos. As espécies de Phacellodomus ocorreram em 35 ecorregiões da América do Sul. O Chaco e as savanas do Uruguai foram as ecorregiões com o maior número de espécies. Apesar da ampla ocorrência das espécies Phacellodomus em áreas secas, espécies como P. ruber, P. rufifrons, P. ferrugineigula e P. erythrophthalmus ocorreram em florestas úmidas e ecorregiões alagadas.

Habitat selection by anurofauna community at rocky seashore in coastal Atlantic Forest, Southeastern Brazil / Selecao de habitat por uma comunidade de anuros em um costao rochoso na Mata Atlantica costeira, sudeste do Brasil

Rocky seashores are low granitic hills distributed along the southeastern Brazilian coast with xeric-like vegetation due to the shallow soil. Knowledge on amphibian communities and their reproductive patterns is especially reduced on this kind of environment. Herein, we present a framework of two years monitoring an amphibian community at a rocky seashore environment located at the protected area of Parque Estadual da Serra da Tiririca, municipality of Niterói, state of Rio de Janeiro, Brazil. We conducted diurnal and nocturnal searches for frogs in tank bromeliads, rocky surface and shrubby vegetation. Annual pattern of breeding activity of anurans was also estimated. Individuals of the most abundant tank-bromeliad, Alcantarea glaziouana were collected and measured according to several variables to understanding the selection of bromeliads by frogs. We checked the influence of the environmental conditions on amphibian abundance, association between the bromeliads measures, and the water storage in the tank. We recorded the species: Scinax aff. x-signatus; S. cuspidatus; S. littoreus; Thoropa miliaris and Gastrotheca sp. Bromeliads were the preferential habitat used by anurans. The nocturnal habit was predominant for all species and during diurnal searches, the specimens were found sheltered in bromeliads axils. The number of calling males as well as amphibian abundance was associated with the rainiest and warmest period of the year. The species S. littoreus was observed in breeding activity in the majority of sample period. Adult calling males of T. miliaris were observed especially in the rainy season. Rainfall and temperature combined are positively correlated to the total number of captured amphibians. However, individually, rainfall was not significantly correlated, while temperature was positively correlated with the amphibian abundance. Water storage capacity by bromeliads was correlated to characteristics and size of the plant. In the rainy season, the height of the plant and the diameter on top view were correlated with the occurrence of amphibians, while during the driest period there was no correlation among variables and the bromeliad usage by amphibians. Recorded species were strongly associated to the Atlantic Forest domain. Nevertheless, the occupation of rocky seashores by anurans may be more associated with the specialized reproductive modes presented by species, since there is no permanent water available in ponds or streams.

Costões rochosos são morros graníticos distribuídos ao longo da costa do sudeste brasileiro, com vegetação xeromórfica devido ao seu solo raso. O conhecimento sobre comunidades de anfíbios e seus padrões reprodutivos é especialmente reduzido neste tipo de ambiente. Neste estudo, nós apresentamos os resultados de dois anos de monitoramento de uma comunidade de anfíbios em um costão rochoso localizado na área protegida do Parque Estadual da Serra da Tiririca, município de Niterói, estado do Rio de Janeiro, Brasil. Nós fizemos buscas diurnas e noturnas para encontrar anuros em bromélias-tanque, superfície rochosa e vegetação arbustiva. O padrão anual de atividade reprodutiva também foi estimado. Indivíduos da bromélia-tanque mais abundante no local, Alcantarea glaziouana, foram coletados e tiveram diversas variáveis mensuradas a fim de se entender a seleção de bromélias por anuros. Verificamos a influência das condições ambientais sobre a abundância dos anfíbios, e a associação entre as medidas das bromélias e a capacidade de estocar água no seu tanque. Diferenças na utilização de microhábitats e na ocupação de bromélias pelos anuros também foram investigadas, assim como também foi testada a influência das variáveis das bromélias sobre a ocorrência dos anuros nestas plantas. Foram registradas as seguintes espécies: Scinax aff. x-signatus; S. cuspidatus; S. littoreus; Thoropa miliaris e Gastrotheca sp. As bromélias foram o habitat preferido pelos anuros. O hábito noturno foi predominante para todas as espécies. Durante buscas diurnas, os espécimes foram encontrados abrigados nas axilas das folhas das bromélias. O número de machos vocalizando, assim como a abundância de anfíbios, foi associado com o período mais quente e chuvoso. Machos adultos de T. miliaris foram observados vocalizando especialmente na estação chuvosa. A precipitação e a temperatura combinadas foram positivamente correlacionadas com o número total de anfíbios capturados. Entretanto, individualmente, a precipitação não foi significativamente correlacionada, enquanto que a temperatura foi positivamente correlacionada com a abundância de anfíbios. A capacidade de armazenamento de água pelas bromélias está correlacionada com as características e tamanho da planta. Na estação chuvosa, a altura da planta e o seu diâmetro foram correlacionados com a ocorrência de anfíbios, enquanto que durante o período seco não existiu correlação entre variáveis e o uso da bromélia pelos anfíbios. As espécies registradas estão fortemente associadas ao domínio da Floresta Atlântica. Entretanto, a ocupação dos costões rochosos por anuros pode estar mais associado com modos reprodutivos especializados apresentados pelas espécies, já que não existem riachos ou poças d'água permanentes disponíveis no local.

Outbreak of dengue virus serotype-2 (DENV-2) of Cambodian origin in Manipur, India - Association with meteorological factors.

Background & objectives: Dengue is a major health problem in many parts of India and its neighbouring countries. Dengue cases have not been reported from Manipur, a northeastern State of India till 2007. But, the sudden outbreak of fever with febrile illness during 2007 and 2008, suspected to be dengue/dengue haemorrhagic fever was investigated to detect the causative agent. Potential impact of climatic variables on dengue transmission has been documented and hence the association between climatic factors, entomological parameters and dengue cases was also analysed. Methods: Forty two and 16 blood samples were collected from patients suspected to have dengue infection in the year 2007 and 2008, respectively. Viral RNA was extracted from serum samples and subjected to multiplex one step RT-PCR assay. Dengue specific amplicons were sequenced and phylogenetic analysis was carried out. Multiyear trend analysis and ‘t’ test were performed for the comparison of different meteorological variables between the years 2000-2004 and 2005-2008. Results: The aetiological agent was found to be DENV-2 and the phylogenetic analysis showed that the isolate was similar to that of Cambodian isolate. There was a significant difference in minimum temperature (P<0.05), Relative humidity - morning hours (P<0.001), relative humanity - afternoon hours (P<0.01) and cumulative precipitation (P< 0.05) between the years 2000-2004 and 2005-2008. Interpretation & conclusions: The sudden outbreak of dengue fever in Manipur State occurred was possibly due to the increased temperature, relative humidity and decrease in cumulative precipitation. These climatic factors would have contributed to the Aedes mosquito abundance and increased virus transmission. Proper diseases surveillance system integrated with meteorological warning system and management of vector breeding sites will prevent such outbreaks in future.

Seasonal distribution of Isotomina thermophilan in a secondary succession and a homegarden in Cachar, Assam.

Present investigation was carried out in Cachar district of Assam over a period of two years (May 2007 - April 2009) to understand the seasonal ecology of Isotomina thermophila (Axelson, 1900) in secondary succession and homegarden ecosystems. Population was found to be maximum during July 2008 (7949.05 No. m-2) and September 2008 (7949.05 No. m-2) in homegarden whereas the peak was recorded in secondary succession during September 2008 (13656.05 No. m-2). Least population was encountered during March 2008 (1222.93 No. m-2) and April 2008 (1630.57 No. m-2) in homegarden and secondary succession, respectively. It may be due to the fact that, vital activity of this species effected in the dry period or migrate towards lower soil profile in search of food and moisture. Linear regression analysis established the hypothesis that all the environmental variables showed positive and significant influence on the population dynamics whereas in homegarden, rainfall (r= 0.36, p>0.05) did not show any influence. In multiple regression analysis positive and significant influences (p<0.05) were recorded for both the investigated sites. Rainfall, relative humidity and temperature facilitated the soil moisture, microbial activity, litter decomposition may favour the reproduction and growth rate of the species. Among microclimatic conditions except soil pH all other parameters exhibited significant correlations (p<0.05) with population. Based on the present investigation, it can be concluded that I. thermophilia does not differ much with the general ecology of collembolans in this sub humid climate.

Influência de variáveis climáticas sobre a incidência de meningite e sua distribuição espacial no município de Ponta Grossa - PR, 2001-2005 / Influence of climatic variables on the incidence of meningitis and its space distribution in the city of Ponta Grossa-PR, 2001-2005

Os elementos climáticos têm destacada influência sobre a manifestação de muitas doenças nos seres humanos. Assim, o objetivo deste estudo foi avaliar a influência de variáveis climáticas locais sobre a incidência mensal de meningite no Município de Ponta Grossa, Paraná, no período de 2001 a 2005, assim como distribuir espacialmente sua ocorrência na área urbana. A amostra inicial foi composta de 401 casos notificados e confirmados de indivíduos residentes nesse município. Verificou-se forte correlação entre a incidência média mensal de meningite e as variáveis climáticas temperatura média do ar, precipitação pluviométrica e umidade relativa do ar na maioria dos meses. A distribuição espacial dos casos em estudo revelou maior concentração nas porções centro-oeste e centro-norte da cidade.

Seasonality of insects in the semi-arid Caatinga of northeastern Brazil / Sazonalidade de insetos na Caatinga do Nordeste Brasileiro

Insects are essential to tropical ecosystems functioning. In semi-arid regions, the increase in abundance and/or activity (e.g. reproduction and foraging behavior) of insects is usually associated with climatic variables. The present study investigates which climatic variables are best predictors of insect abundance in an area of Caatinga in northeastern Brazil. Individuals were sampled for 24 months using Malaise and pitfall traps, and beating trays. A total of 58925 individuals belonging to 20 insect orders were collected. The most abundant orders were Hymenoptera, Diptera, Collembola and Coleoptera. Most orders studied showed a clear maximum abundance in the rainy season. Rainfall and humidity were the best predictors of insect abundance in the Caatinga. However, no climatic variable could explain Psocoptera and Blattodea variance in abundance/activity. Our results suggest that climatic changes associated with rainfall patterns in the Caatinga may affect ecosystem processes and services that depend direct or indirectly on insect abundance/activity.

Os insetos são abundantes e essenciais para o funcionamento dos ecossistemas terrestres tropicais. No entanto, a abundância e/ou atividade (e.g. reprodução ou forrageio) destes organismos podem ser fortemente influenciadas pelas variáveis climáticas. Este estudo examina quais as variáveis climáticas podem atuar como preditoras da abundância e/ou atividade dos insetos em uma área de Caatinga do Nordeste brasileiro. Ao longo de 24 meses, os insetos foram coletados mensalmente utilizando armadilhas Malaise, armadilhas tipo "pitfall" e guarda-chuva entomológico. Um total de 58925 indivíduos de 20 ordens foi coletado. As ordens mais abundantes foram Hymenoptera, Diptera, Collembola e Coleoptera. Entre as doze ordens mais abundantes, dez apresentaram os seus maiores picos durante a estação chuvosa. A precipitação e a umidade relativa foram os principais preditores dos padrões de abundância e/ou atividade dos insetos na caatinga. Nenhuma variável climática foi relacionada com o número de indivíduos coletados de Psocoptera e Blattodea. Os efeitos das variáveis climáticas sobre os insetos sugerem que alterações no clima da caatinga, especialmente em seu padrão de precipitação, podem afetar os serviços ecossistêmicos que dependem direta e indiretamente da abundância e/ou atividade destes organismos.