Geber BARBOSA DE ALBUQUERQUE Moura

• Federal Rural University of Pernambuco

Fire is an ancient tool used by man in agriculture. However, this practice can cause misfortunes due to the destruction of the local fauna and flora, especially if it occurs in regions with a semi-arid climate and low rainfall. The objective of this article was to verify the dynamics of the scars caused by fires, based on geoprocessing and remote s...

Northeast Brazil (NEB), particularly its semiarid region, represents an area highly susceptible to the impacts of climate change, including severe droughts, and intense anthropogenic activities. These stresses may be accelerating environmental degradation and desertification of soil in NEB. The main aim of this study was to gain geospatial insights...

The municipality of Irauçuba, located in the Semiarid region of Ceará, Brazil, has faced the effects of desertification resulting from the scarcity of rainfall. This study aimed to assess the progression of desertification in the area from 2003 to 2020, using climatic and biophysical data collected during this period. We used supplementary data fro...

This study analyzed the seasonality of biophysical parameters in the extreme years of precipitation and the relationship with the monthly precipitation of the state of Pernambuco at the regional level (Pernambuco) and homogeneous precipitation zones: zone 1-semiarid, zone 2-transition and zone 3-coastal. For this, the biophysical parameters at the...

This work aimed todevelopanagrometeorological-spectral model,through a multiple linearregression,to estimate sugarcane productivityin the semi-arid regionof Brazil. Annualagricultural yield data (2005/2006 to 2011/2012),monthly agrometeorologicaland spectral data(2005 to2012)were used. In thecalibrationperiod of the model,the correlation betweenagr...

The cultivation of sugarcane occupies a significant area in the municipality of Juazeiro, BA, affecting the surrounding environment. The use of technologies, such as remote sensing and geoprocessing, has been helping to obtain important information about these agricultural areas. This work aimed to evaluate the spatial distribution of the component...

The objective of this work was to characterize the fractionation of Photosynthetically Active Radiation (PAR) and its interaction with the vegetation cover of a portion of Seasonally Dry Tropical Forest at the end of the rainy season in Northeast Brazil. The leaf area index was correlated with each component of the PAR radiation balance to find the...

The main factors responsible for the greatest natural disasters are related to extreme weather events for which no country is really well-prepared, particularly in Latin America, and specifically in Brazil. This research was developed to determine the spatiotemporal climatic similarities of municipalities along a longitudinal gradient from the east...

The objective of this study was to characterize the patterns of monthly rainfall in the mesoregions of Zona da Mata and Metropolitan of Recife in the state of Pernambuco, Brazil, based on geostatistical techniques and multivariate analysis, in addition to establishing rain flow strategies in urban centers and alerting of possible impacts on local a...

RESUMO: A mesorregião do Sertão Pernambucano apresenta condições climáticas que afetam diretamente a produção agrícola, pois apresenta um clima quente, seco e com regime pluvial irregular. Em função dessas características, o bioma predominante da região, a Caatinga, torna-se mais vulnerável à ocorrência de queimadas. Com a premissa de mapear e moni...

As condições de mudanças na cobertura e uso da terra do Semiárido Brasileiro se intensifcam ao longo tempo devido às mudanças climáticas e a variabilidade pluviométrica. O monitoramento ambiental por satélite das condições biofísicas à superfície favorece no planejamento e gestão na tomada de decisão de forma rápida e efciente, para mitigar os impa...

The Brazilian semiarid region is marked by water scarcity, which causes the loss of leaves from native vegetation to reduce transpiration. With the reduction of the Caatinga leaf area, the soil becomes more exposed, which makes it a great ally for environmental degradation. This study aimed to monitor and analyze the spatial-temporal dynamics of th...

The objective of this study was to evaluate the causes and consequences of changes in the water flow of the São Francisco River, on the border between the states of Sergipe and Alagoas, a Brazilian semiarid region. For this, we used images from the Landsat-8 satellite, OLI sensor, with a spatial resolution of 30 m. The results found in this study r...

A gestão eficiente dos recursos hídricos no Nordeste Brasileiro torna-se fundamental diante do regime hidrológico dos rios intermitentes, dos quais muitos são extremamente críticos, pois dependem de um regime pluviométrico irregular, tanto em escala de tempo mensal, quanto anual. Objetivou-se determinar a variabilidade espaço-temporal da precipitaç...

The objective of this study was to evaluate the causes and consequences of changes in the water flow of the São Francisco River, on the border between the states of Sergipe and Alagoas, a Brazilian semiarid region. For this, we used images from the Landsat-8 satellite, OLI sensor, with a spatial resolution of 30 m. The results found in this study r...

The objective of this study was to evaluate the causes and consequences of changes in the water flow of the São Francisco River, on the border between the states of Sergipe and Alagoas, a Brazilian semiarid region. For this, we used images from the Landsat-8 satellite, OLI sensor, with a spatial resolution of 30 m. The results found in this study r...

Evaluation in the Detection of Environmental Changes in the High Ipanema Watershed Abstract The objective of this study was to identify and evaluate the different degrees of environmental susceptibility of the High Ipanema watershed, covering part of the municipalities of Arcoverde and Pesqueira in the state of Pernambuco, to climatic variability a...

The objective of this study was to evaluate the causes and consequences of changes in the water flow of the São Francisco River, on the border between the states of Sergipe and Alagoas, a Brazilian semiarid region. For this, we used images from the Landsat-8 satellite, 8 OLI sensor, with a spatial resolution of 30 m. The results found in this study...

The Brazilian semiarid suffers from the reflex of high rainfall variability, with rainfall concentrated over time, with little spatial distribution. In this sense, presenting a highly dynamic vegetation cover, which requires constant monitoring of the changing conditions of different land uses and the utilization of water resources. The objective w...

The objective of this work was to find the best predictor variables through canonical correlation analysis in trade winds, Sea Surface Temperature (SST), Atmospheric pressure at the surface in the Equatorial Pacific Ocean and SST in the Tropical Atlantic (Dipole area), that models for forecasting rainfall (rainy season) in the eastern sector of nor...

Regiões de clima tropical, como no Brasil, tem predominância de temperaturas mais elevadas, com condições de estresse. Objetiva-se neste trabalho determinar por meio da análise de componentes principais, quais, dentre as variáveis ambientais, fisiológicas e parâmetros comportamentais têm influência sobre a produção e qualidade do leite de vacas em...

O planejamento hídrico é o ponto de partida para o gerenciamento dos recursos hídricos, contribuindo com informações que auxiliam nas atividades agropecuárias de determinada região. Assim, objetivou-se identificar períodos pluviometricamente homogêneos e aptos para o cultivo do capim Tanzânia (Panicum maximum Jacq.), no município de Petrolina-PE. D...

Objetivo: Identificar núcleos de índice de semiaridade, associados à cobertura do sensor MODIS (MOD12Q1), bem como a falta de amostragem do solo. Buscou-se, ainda, analisar os efeitos dos parâmetros biofísicos sem índice de umidade do solo (IUS) usados pelo NDVI (MOD13Q1) e pelos Ts (MOD11A2) para 2006 e 2012 no município de Ouricuri, Pernambuco, B...

The Brazilian semiarid region lacks constant environmental monitoring of the soil uses, to apply reversion and prevention measures over hydric and natural resources in the long and medium-term. Remote sensing enables advances and essential conditions to efficiently monitor changes caused in the vegetation dynamics of the Caatinga biome. Thus, the o...

A gestão eficiente dos recursos hídricos no Nordeste Brasileiro torna-se fundamental diante do regime hidrológico dos rios intermitentes, dos quais muitos são extremamente críticos, pois dependem de um regime pluviométrico irregular, tanto em escala de tempo mensal, quanto anual. Objetivou-se determinar a variabilidade espaço-temporal da precipitaç...

For applications in water management, estimation of evapotranspiration is a critical term in the water balance, to establish a sustainable development of activities that requires such action. So it is necessary to more accurately estimate the reference evapotranspiration (ETo). The objective of this study was to evaluate the performance of daily ET...

The main objective of this work is to evaluate how much the rain on the northeast of the Pernambuco State is due to the Sea Surface Temperature anomalies (SSTA) of Atlantic and Pacific Ocean. Accumulated monthly rain data registered at 15 rain gauges distributed throughout the studied region during the period from 1963 to 1992 and the 1945 to 1993...

Faced with the need for conservation of water resources it is necessary to better irrigation management. The objective of this research was to analyse the water requirement in Pernambuco State, Brazil, represented by the evapotranspiration reference (ET0), in diferents regimes annuals of precipitation: rainfall, regular and dry. The ET0 values were...

The present work had as objective to carry through the agroclimatic zoning of the culture of surinam cherry in the state of Pernambuco. They had been used given average annual of minimum and maximum pluvial precipitation and pertaining temperatures of air the 201 climatologic station located in the main representative cities of the regions of the S...

Beginning with the observed rainfall data and the potential evapotranspiration for normal, dry and rainy years, the best period for the vegetable cultivation was evaluated for Ipojuca, Pernambuco, Brazil. The potential monthly evapotranspiration (ETP) data was computed using Hargreaves' method and transformed into ten-day averages. The sum total of...

The objective of this work was to estimate the decendium effective rainfall to Goiana City (North Forest Zone), Pernambuco, Brazil, which has a great representation in the sugarcane industry of the State, aiming at helping the irrigation management and the rational use of water. The rainfall database used had a temporal scale from January 1981 to D...

This study aimed to estimate albedo data from the land surface sensor using the images of Thematic Mapper (TM) satellite LANDSAT 5 and to compare it with data from two agrometeorological stations located in the region of Cerrado, and another in sugar cane cultivation. The study area is located in the municipality of Santa Rita do Passa Quatro - SP,...

Beginning with the observed rainfall data and the potential evapotranspiration for normal, dry and rainy years, the best period for the vegetable cultivation was evaluated for Ipojuca, Pernambuco, Brazil. The potential monthly evapotranspiration (ETP) data was computed using Hargreaves' method and transformed into ten-day averages. The sum total of...

The present work had as objective to carry through the agroclimatic zoning of the culture of surinam cherry in the state of Pernambuco. They had been used given average annual of minimum and maximum pluvial precipitation and pertaining temperatures of air the 201 climatologic station located in the main representative cities of the regions of the S...

The desertification generates and accents the scarcity of vital natural resources for the survival human being, as drinking waters, alone agriculturist and vegetation. Implying in social and economic problems in the affected areas. Recently the remote sensing and the techniques of geoprocessing has been used in diverse areas of the research, mainly...

Apesar da evolução e importância econômica e social do agronegócio para o Brasil, existe, ainda, uma grande dificuldade em estimar com a precisão e a antecipação necessárias à safra das principais culturas agrícolas do país, o que justifica o estudo e a elaboração de metodologias empregando o sensoriamento remoto para essa finalidade. Assim, este t...

The objective of this work was to correlate the Northeast of Brazil (NEB) rainfall grouped in one homogeneous cluster with the global sea surface temperature (SST) anomalies. The data covered the period from 1945 to 1985 and the analyses shows that there are influences from the Atlantic and Pacific ocean over the eastern NEB's rainfall, with a high...

This study aimed at accomplishing the agroclimatic zoning of Pernambuco State, in order to provide subsidies for the selection of areas for implantation of Alpinia purpurata tropical flower. The climatic data of 123 localities (69 with a period above 30 years and 54 below 30 years) were used, thus getting a better representation of the data in the...

The best period for sugarcane growth for Itambé, Pernambuco, Brazil, was evaluated, based on observed daily precipitation and potential evapotranspiration data, for years classified as "dry", "normal" or "rainy". Potential evapotranspiration monthly values were estimated through Hargreaves methods, and transformed into 10-days period averages. Ten-...

The heavy metals, Cd, Cu, Cr, Zn, and Pb, were used to incubate healthy specimens of the freshwater mussel species, Anodonta cygnea. Afterwards, their biological fluids, either haemolymph or extrapallial fluid were analyzed for the presence of several organic constituents, known to be important for biomineralization, such as proteins, glycosaminogl...

Bivalve mollusks, such as the freshwater mussel Anodonta cygnea, show seasonal changes in calcification. This cycle of calcification must either be a cause or a consequence for seasonal fluctuations in the organic composition of the animal's fluids, haemolymph and extrapallial fluid, the liquid media for biomineralization. We monitored the fluids o...

The main purpose of this study was to relate the rainfall in eastern Northeast Brazil (NEB) with the sea surface temperature (SST) in the Atlantic (Dipole area) and Pacific oceans during the 1945-1985 period. This analysis shows how anomalous SST events influence precipitation in the eastern part of NEB, from the states of Rio Grande do Norte throu...

The main purpose of this study was to relate the rainfall in eastern Northeast Brazil (NEB) with the sea surface temperature (SST) in the Atlantic (Dipole area) and Pacific oceans during the 1945-1985 period. This analysis shows how anomalous SST events influence precipitation in the eastern part of NEB, from the states of Rio Grande do Norte throu...

The mantle and gill extracellular mineral concretions of normal unpolluted and manganese-incubated specimens of the freshwater mussel, Anodonta cygnea (L.), were studied for their elementary composition and morphology. The mineral concretions of the gills, as well as those analyzed on the haemolymph side of the intrapallial epithelium, revealed a p...

The objective of this work was to find relations between organic and inorganic shell components. Crassostrea gigas shells were analysed from live specimens collected at five different stations: the Lima estuary (1), the Ria de Aveiro (2, 3), and the Mondego estuary (4, 5), Portugal. About 30% of the oysters, from stations 1, 2 and 3 had shell-thick...

Oysters Crassostrea gigas were exposed to two different lead concentrations, 470 and 790 μg l−1, with the main objective of finding any alterations on shell biochemical composition, namely amino acids and metal ions. Whole shell elemental composition showed that Pb levels are higher and Ca, Na and Co levels are lower in contaminated than in control...

Meteosat 4-VIS high-definition imagery was used for testing solar radiation assessment over northeast Brazil during January 1991 and 1994. Actinographs of solarimetric stations in Paraíba State provided proper ground reference. A simple physical model was developed, based on two basic hypotheses: visible and infrared intervals are decoupled, and ra...

The spionid polychaete Polydora sp. can live and reproduce inside the oysters' shell, excavating a U-shaped burrow the central portion of which is filled with detritus and particles of dissolved shell. The oyster responds by secreting an organic layer, confining the worm, and later covering it with calcitostracum. This process creates a characteris...

A diagnostic study of intense precipitations that ocurred on the days 07th, 08th, 09th and 10th of April, 1996, in the State of Bahia Satellite imagery, daily precipitation and analysis of CPTEC data were used in this study. Objective analysis meteorological fields at standard pressure levels (1000, 850, 500 and 200 hPa) Throughout that for day per...