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The aim of this study is to obtain the translocation factor by application of landfill leachate (LL) diluted in public irrigation water (IW). Pennisetum purpureum Schum (elephant grass) was cultivated for 83 days in an experimental water reuse unit. The present work was developed at the Experimental Water Reuse Unit (UERA), on the UFERSA campus in Mossoró, RN, Brazil. Plot irrigation was based on water balance and crop evapotranspiration (ETc). The concentration in the plant tissue (root and leaf) of the following heavy metals was measured to determine the respective translocation factors: manganese (Mn), zinc (Zn), copper (Cu), nickel (Ni), cadmium (Cd), and lead (Pb). The experiment was set up in a randomized block design with five treatments (T1, plots irrigated only with IW; T2, 50% of LL dose plus IW; T3, 100% of LL dose plus IW; T4, 150% of LL dose plus IW; and T5, 200% of LL dose plus IW) and five replications. All treatments received LL plus IW depth of 491.02 mm for 83 days of P. purpureum cultivation. The data obtained were submitted to multivariate analysis plus the nonparametric Kruskal-Wallis test to compare the means. Pennisetum purpureum showed a potential to accumulate metals in its tissues, mainly Mn, Zn, and Cu. The treatments that most favored the extraction of these metals were T2 and T5; in this sense, P. purpureum was not efficient in translocating heavy metals, since the translocation factor observed in all treatments was below 1.0, indicating that the species used extract heavy metals from soil solution and keeps in yours roots. This suggests planting P. purpureum may not be a viable option to remediate environments highly contaminated with heavy metals.
Francisco De Oliveira Mesquita; Talita Dantas Pedrosa; Rafael Oliveira Batista; Eunice Maia de Andrade. Translocation factor of heavy metals by elephant grass grown with varying concentrations of landfill leachate. Environmental Science and Pollution Research 2021, 28, 43831 -43841.
AMA StyleFrancisco De Oliveira Mesquita, Talita Dantas Pedrosa, Rafael Oliveira Batista, Eunice Maia de Andrade. Translocation factor of heavy metals by elephant grass grown with varying concentrations of landfill leachate. Environmental Science and Pollution Research. 2021; 28 (32):43831-43841.
Chicago/Turabian StyleFrancisco De Oliveira Mesquita; Talita Dantas Pedrosa; Rafael Oliveira Batista; Eunice Maia de Andrade. 2021. "Translocation factor of heavy metals by elephant grass grown with varying concentrations of landfill leachate." Environmental Science and Pollution Research 28, no. 32: 43831-43841.
Increases in water scarcity due to climate change, especially in dry regions, can affect the dynamics of successional species. In view of the longest sequence of dry years (2010–2019) to have occurred in the Brazilian semi-arid region, with a consequent reduction in water availability, the influence of rainfall distribution on the production of above-ground plant biomass was investigated in a Dry Tropical Forest (DTF). This natural change monitoring experiment was conducted over 11 years (2009–2019) in a fragment of DTF under regeneration for 40 years, in the district of Iguatu, Ceará, Brazil. All living individuals of the woody component with a Diameter at Ground Level (DGL) ≥3 cm and a height (h) ≥100 cm were measured during 2009–2010, 2015–2016, 2018–2019. Biomass production was calculated using an allometric equation defined for DTF species. A mean mortality rate of 134 ind. ha−1 yr−1 was registered, with a recruitment of 39 ind. ha−1 yr−1, generating a mean deficit of 95 ind. ha−1 yr−1. The mean reduction in biomass was 3.26 Mg ha−1 yr−1. Climate conditions during consecutive dry years have a direct effect on the mortality and recruitment of woody species, with a recruitment/mortality ratio of 0.11. Shrubby-tree individuals of smaller diameter showed less resilience to the cumulative effect of drought.
Diego Campos; Eunice Andrade; Andréa Castanho; Ramon Feitosa; Helba Palácio. Biomass Dynamics in a Fragment of Brazilian Tropical Forest (Caatinga) over Consecutive Dry Years. Applied Sciences 2020, 10, 7813 .
AMA StyleDiego Campos, Eunice Andrade, Andréa Castanho, Ramon Feitosa, Helba Palácio. Biomass Dynamics in a Fragment of Brazilian Tropical Forest (Caatinga) over Consecutive Dry Years. Applied Sciences. 2020; 10 (21):7813.
Chicago/Turabian StyleDiego Campos; Eunice Andrade; Andréa Castanho; Ramon Feitosa; Helba Palácio. 2020. "Biomass Dynamics in a Fragment of Brazilian Tropical Forest (Caatinga) over Consecutive Dry Years." Applied Sciences 10, no. 21: 7813.
Management of tropical dry forests in Brazil expanded 450% in the two latest decades; but little is known about the dynamics of these areas. Thus, the objective of this work was to evaluate if the recovery of mean original biomass stocks (MOBS) is a consistent criterion to define cut cycles in a managed forest for charcoal production, and determine the remaining biomass and its contribution to soil carbon stocks. The study was conducted at the Ramalhete Settlement, in General Sampaio, CE, Brazil, in 2018. The explorable shrubby-arboreous biomass (ESAB) and the ESAB mean annual increases (ESAB -MAI) were determined in five areas subjected to clearcutting after 3, 5, 8, 11, and 15 years, and in a preservation area with 40 years of regeneration. Each area was divided into seven plots (20 × 20 m), totaling 42 plots. The ESAB of the plots were compared and the remaining biomass (branches, stumps, and litterfall) in a recently explored area was calculated and converted into organic carbon. The remaining biomass of branches had higher contribution to soil carbon stocks, followed by the litterfall, and stumps. The carbon stocks of the branch component were 3.4-fold higher than those of the litterfall. The recovery of the MOBS of an area after clearcutting should not be used as a criterion to define the cut cycle, since these original carbon stocks do not represent the maximum ESAB production possible in the area; the biodiversity and amount of ESAB in the classes of larger diameter are more adequate criteria.
José Frédson Bezerra Lopes; Eunice Maia De Andrade; Erich Celestino Braga Pereira; Diego Antunes Campos; Deodato Do Nascimento Aquino. CUT CYCLES AND SOIL CARBON POTENTIAL STOCKS IN A MANAGED FOREST IN THE CAATINGA DOMAIN IN BRAZIL. Revista Caatinga 2020, 33, 735 -745.
AMA StyleJosé Frédson Bezerra Lopes, Eunice Maia De Andrade, Erich Celestino Braga Pereira, Diego Antunes Campos, Deodato Do Nascimento Aquino. CUT CYCLES AND SOIL CARBON POTENTIAL STOCKS IN A MANAGED FOREST IN THE CAATINGA DOMAIN IN BRAZIL. Revista Caatinga. 2020; 33 (3):735-745.
Chicago/Turabian StyleJosé Frédson Bezerra Lopes; Eunice Maia De Andrade; Erich Celestino Braga Pereira; Diego Antunes Campos; Deodato Do Nascimento Aquino. 2020. "CUT CYCLES AND SOIL CARBON POTENTIAL STOCKS IN A MANAGED FOREST IN THE CAATINGA DOMAIN IN BRAZIL." Revista Caatinga 33, no. 3: 735-745.
Knowing determinant factors of erosive process is essential to adopt soil conservationist and loss-mitigation measures. Therefore, the objective of this work was to assess the correlation between rainfall characteristics and sediment transport in the Semiarid region of Brazil. The study was conducted at the Iguatu Experimental Basin in the state of Ceará, Brazil, in a watershed with area of 1.15 ha. The vegetation was thinned by removal of plants with diameters below 10 cm, and the area remained with an arboreous cover of 60%. The following variables were evaluated from 2012 to 2016: rainfall depth (mm), rainfall duration (hours), maximum rainfall intensity in 5, 10, 15, 20, 30, 45, and 60 minutes (mm h-1), mean rainfall intensity (mm h-1), rainfall depth in the previous 5 days (mm), runoff depth (mm), and transported sediment (kg ha-1). The records showed 158 rainfall events, 27 with surface runoff and 24 with sediment transport. The correlations were investigated by multivariate analysis of principal components (PC). The model explained 84% of total variance with four PC-PC1, PC2, PC3, and PC4 were formed, respectively, for disaggregating power of rainfall on soil particles, represented by the rainfall intensities; soil water content; runoff depth and sediment transport; and rainfall duration and interval between rainfalls. The highest factorial weight was found for the maximum intensity in 20 minutes, indicating the need for further hydrological studies focused on this variable at basin scale in areas of the Semiarid region of Brazil subjected to thinning of the vegetation.
Marcos Makeison Moreira De Sousa; Helba Araújo De Queiroz Palácio; Eunice Maia De Andrade; Jacques Carvalho Ribeiro Filho; Matheus Magalhães Silva Moura. DETERMINANT PLUVIOMETRIC CHARACTERISTICS OF SEDIMENT TRANSPORT IN A CATCHMENT WITH THINNED VEGETATION IN THE TROPICAL SEMIARID. Revista Caatinga 2020, 33, 785 -793.
AMA StyleMarcos Makeison Moreira De Sousa, Helba Araújo De Queiroz Palácio, Eunice Maia De Andrade, Jacques Carvalho Ribeiro Filho, Matheus Magalhães Silva Moura. DETERMINANT PLUVIOMETRIC CHARACTERISTICS OF SEDIMENT TRANSPORT IN A CATCHMENT WITH THINNED VEGETATION IN THE TROPICAL SEMIARID. Revista Caatinga. 2020; 33 (3):785-793.
Chicago/Turabian StyleMarcos Makeison Moreira De Sousa; Helba Araújo De Queiroz Palácio; Eunice Maia De Andrade; Jacques Carvalho Ribeiro Filho; Matheus Magalhães Silva Moura. 2020. "DETERMINANT PLUVIOMETRIC CHARACTERISTICS OF SEDIMENT TRANSPORT IN A CATCHMENT WITH THINNED VEGETATION IN THE TROPICAL SEMIARID." Revista Caatinga 33, no. 3: 785-793.
The availability of potassium (K), calcium (Ca) and magnesium (Mg) in the soil affects the nutrition and productivity of the plant cover. The Ca:Mg, Ca:K and Mg:K stoichiometric ratios indicate the nutrient load balance in the soil. However, limited attention has been paid to providing a scientific basis for how changes in land use, especially the cultivation of forage, impacts the availability and reserves of base cations in semi-arid regions, since, in these environments, fertiliser is not used. Therefore, the aim of this study was to quantify the concentrations of soil K, Ca and Mg in areas of preserved Caatinga (PC), and areas where buffel grass (BG) has been cultivated for 40 years and Leucaena grass (LE) for 11 years. Four 100 x 100 cm trenches were opened in each type of plant cover and collections were made in the 0-5, 5-10, 10-15 and 15-20 cm layers. The concentrations of K, Ca and Mg and their ratios were determined and compared using the Mann-Whitney test. The soil under buffel grass showed higher concentrations of K and Mg, and a lower concentration of Ca. Compared to PC, LE presented a lower Ca content in the 0-5 cm layer only. BG had the lowest values for the Ca:Mg and Ca:K stoichiometric ratios due to depletion of the Ca. Despite being soluble and easily leached, K remained in the soil under each type of cover, favoured by the semi-arid climate. Soil Ca, which is exported due to grazing of the produced biomass, should be replaced so as not to compromise the support capacity of seasonally dry tropical environments through the cultivation of forages.
Mônica Da Silva Santana; Vanderlise Giongo; Vanêssa Coelho Silva; Vanderson Coelho Silva; Alessandra Monteiro Salviano; Eunice Maia Andrade. Stoichiometric ratios in the soil of native and forage areas in a seasonally dry tropical forest. REVISTA [email protected] ON-LINE 2020, 14, 1 .
AMA StyleMônica Da Silva Santana, Vanderlise Giongo, Vanêssa Coelho Silva, Vanderson Coelho Silva, Alessandra Monteiro Salviano, Eunice Maia Andrade. Stoichiometric ratios in the soil of native and forage areas in a seasonally dry tropical forest. REVISTA [email protected] ON-LINE. 2020; 14 ():1.
Chicago/Turabian StyleMônica Da Silva Santana; Vanderlise Giongo; Vanêssa Coelho Silva; Vanderson Coelho Silva; Alessandra Monteiro Salviano; Eunice Maia Andrade. 2020. "Stoichiometric ratios in the soil of native and forage areas in a seasonally dry tropical forest." REVISTA [email protected] ON-LINE 14, no. : 1.
The interception process impacts rainfall magnitude and intensity under the canopy. In this study, the effect of plant interception on throughfall characteristics was assessed in the deciduous Caatinga vegetation, at different canopy development stages and for temporal scales ranging from seasonal to the intra-event scale. Throughfall and stemflow percentages were slightly higher at the onset of the rainy season, when leaf area density is low, with resulting lower interception losses. However, there was no statistical difference among the variables at the seasonal scale. At the intra-event scale, average and maximum throughfall intensity at different time intervals showed statistical difference between the stages of canopy development. Regardless of leaf area density and rainfall depth, vegetation is able to retain all the water up to 2 min in the beginning of each rainfall event with accumulated rainfall smaller than 0.6 mm. Furthermore, the Caatinga vegetation attenuates the rainfall intensity by 30–40%.
José Bandeira Brasil; Eunice Maia de Andrade; Helba Araújo De Queiroz Palácio; Julio Cesar Neves dos Santos; Pedro Henrique Augusto Medeiros. Temporal variability of throughfall as a function of the canopy development stage: from seasonal to intra-event scale. Hydrological Sciences Journal 2020, 65, 1640 -1651.
AMA StyleJosé Bandeira Brasil, Eunice Maia de Andrade, Helba Araújo De Queiroz Palácio, Julio Cesar Neves dos Santos, Pedro Henrique Augusto Medeiros. Temporal variability of throughfall as a function of the canopy development stage: from seasonal to intra-event scale. Hydrological Sciences Journal. 2020; 65 (10):1640-1651.
Chicago/Turabian StyleJosé Bandeira Brasil; Eunice Maia de Andrade; Helba Araújo De Queiroz Palácio; Julio Cesar Neves dos Santos; Pedro Henrique Augusto Medeiros. 2020. "Temporal variability of throughfall as a function of the canopy development stage: from seasonal to intra-event scale." Hydrological Sciences Journal 65, no. 10: 1640-1651.
Seasonally dry tropical forests (SDTF) usually present dry seasons of eight or more months. Considering the concerns about the resilience of SDTF to climate changes, the objective of this study was to evaluate the effect of the rainfall regime on fine root growth in a SDTF. The experiment started at the end of the wet season (July 2015), when fine roots were evaluated and ingrowth cores were implemented. The temporal growth of fine roots in the 0-30 cm soil layer was monitored, considering the 0-10, 10-20, and 20-30 cm sublayers, through six samplings from November 2015 to July 2017. The characteristics evaluated were fine root biomass, fine root length, fine root specific length, and fine root mean diameter. The significances of the root growths over time and space were tested by the Kruskal-Wallis test (p
Eunice Maia De Andrade; Gilberto Quevedo Rosa; Aldenia Mendes Mascena De Almeida; Antonio Givanilson Rodrigues Da Silva; Maria Gina Torres Sena. RAINFALL REGIME ON FINE ROOT GROWTH IN A SEASONALLY DRY TROPICAL FOREST. Revista Caatinga 2020, 33, 458 -469.
AMA StyleEunice Maia De Andrade, Gilberto Quevedo Rosa, Aldenia Mendes Mascena De Almeida, Antonio Givanilson Rodrigues Da Silva, Maria Gina Torres Sena. RAINFALL REGIME ON FINE ROOT GROWTH IN A SEASONALLY DRY TROPICAL FOREST. Revista Caatinga. 2020; 33 (2):458-469.
Chicago/Turabian StyleEunice Maia De Andrade; Gilberto Quevedo Rosa; Aldenia Mendes Mascena De Almeida; Antonio Givanilson Rodrigues Da Silva; Maria Gina Torres Sena. 2020. "RAINFALL REGIME ON FINE ROOT GROWTH IN A SEASONALLY DRY TROPICAL FOREST." Revista Caatinga 33, no. 2: 458-469.
Eunice Maia Andrade; Maria João Simas Guerreiro; Helba Araújo Queiroz Palácio; Diego Antunes Campos. Ecohydrology in a Brazilian tropical dry forest: thinned vegetation impact on hydrological functions and ecosystem services. Journal of Hydrology: Regional Studies 2020, 27, 1 .
AMA StyleEunice Maia Andrade, Maria João Simas Guerreiro, Helba Araújo Queiroz Palácio, Diego Antunes Campos. Ecohydrology in a Brazilian tropical dry forest: thinned vegetation impact on hydrological functions and ecosystem services. Journal of Hydrology: Regional Studies. 2020; 27 ():1.
Chicago/Turabian StyleEunice Maia Andrade; Maria João Simas Guerreiro; Helba Araújo Queiroz Palácio; Diego Antunes Campos. 2020. "Ecohydrology in a Brazilian tropical dry forest: thinned vegetation impact on hydrological functions and ecosystem services." Journal of Hydrology: Regional Studies 27, no. : 1.
Total organic carbon (TOC) and total nitrogen (TN) concentration in the soil are an indicator of soil degradation. To understand how land-use may impact these concentrations in seasonally dry tropical forests (SDTF), we analyzed the effect of four land-uses on TOC stocks (STK.TOC) and TN stocks (STK.TN) in a semi-arid region of Brazil. Soil samples were collected in 12 trenches (three sites × four land-uses—dense caatinga (DC), open caatinga (OC), pasture (PA) and agriculture (AG)), in the 0–10; 10–20 and 20–30 cm layers or as far as the bedrock. The data were compared by the Kruskal–Wallis test (p ≤ 0.05) and similarity investigated by cluster analysis. STK.TOC and STK.TN the surface layer (0–10 cm) showed no significant difference (p ≤ 0.05) between the DC; OC and PA land-uses. The similarity in STK.TOC and STK.TN values between DC, OC and PA, indicate that it is possible to explore SDTF to produce biomass and protein by adopting open caatinga and pasture land uses on Neosols with very low TOC stocks. The greatest reduction in STK.TOC and STK.TN in the agriculture land-use may lead to soil degradation and contribute to the addition of CO2 to the atmosphere.
Eunice Maia Andrade; Wilner Valbrun; Aldênia Mendes Mascena De Almeida; Gilberto Rosa; Antonio Givanilson Rodrigues Da Silva. Land-Use Effect on Soil Carbon and Nitrogen Stock in a Seasonally Dry Tropical Forest. Agronomy 2020, 10, 158 .
AMA StyleEunice Maia Andrade, Wilner Valbrun, Aldênia Mendes Mascena De Almeida, Gilberto Rosa, Antonio Givanilson Rodrigues Da Silva. Land-Use Effect on Soil Carbon and Nitrogen Stock in a Seasonally Dry Tropical Forest. Agronomy. 2020; 10 (2):158.
Chicago/Turabian StyleEunice Maia Andrade; Wilner Valbrun; Aldênia Mendes Mascena De Almeida; Gilberto Rosa; Antonio Givanilson Rodrigues Da Silva. 2020. "Land-Use Effect on Soil Carbon and Nitrogen Stock in a Seasonally Dry Tropical Forest." Agronomy 10, no. 2: 158.
This work is focused on characterizing and understanding the aboveground biomass of Caatinga in a semiarid region in northeastern Brazil. The quantification of Caatinga biomass is limited by the small number of field plots, which are inadequate for addressing the biome's extreme heterogeneity. Satellite-derived biomass products can address spatial and temporal changes but they have not been validated for seasonally dry tropical forests. Here we combine a compilation of published field phytosociological observations with a new 30m spatial resolution satellite biomass product. Both data were significantly correlated, satellite estimates consistently captured the wide variability of the biomass across the different physiognomies (2-272 Mg/ha). Based on the satellite product we show that in year 2000 about 50 percent of the region had very low biomass (<2 Mg/ha) and that the majority of the biomass (86%) is concentrated in only 27% of the area. Our work confirm other estimates of biomass 39 Mg/ha (9-61 Mg/ha) and carbon 0.79 PgC. The satellite products together with ground based estimates has the potential to improve forest management in Caatinga and other seasonally dry tropical forests through improved approximation of spatial variability, how they relate to climate, and support numerical modeling experiments in semiarid regions.
Andrea D.A. Castanho; Michael Coe; Eunice M. Andrade; Wayne Walker; Alessandro Baccini; Diego A. Campos; Mary Farina. A close look at above ground biomass of a large and heterogeneous Seasonally Dry Tropical Forest - Caatinga in North East of Brazil. Anais da Academia Brasileira de Ciências 2020, 92, e20190282 .
AMA StyleAndrea D.A. Castanho, Michael Coe, Eunice M. Andrade, Wayne Walker, Alessandro Baccini, Diego A. Campos, Mary Farina. A close look at above ground biomass of a large and heterogeneous Seasonally Dry Tropical Forest - Caatinga in North East of Brazil. Anais da Academia Brasileira de Ciências. 2020; 92 (1):e20190282.
Chicago/Turabian StyleAndrea D.A. Castanho; Michael Coe; Eunice M. Andrade; Wayne Walker; Alessandro Baccini; Diego A. Campos; Mary Farina. 2020. "A close look at above ground biomass of a large and heterogeneous Seasonally Dry Tropical Forest - Caatinga in North East of Brazil." Anais da Academia Brasileira de Ciências 92, no. 1: e20190282.
A gramínea Andropogon gayanus é uma espécie forrageira adaptada às condições climáticas da região semiárida. Assim, o presente estudo teve como objetivo avaliar a produção mensal de biomassa em função da dinâmica temporal da precipitação mensal a fim de melhorar a compreensão dos estágios de desenvolvimento da gramínea em uma região semiárida do Brasil. O corte e queima da vegetação nativa ocorreu em 2009 e em janeiro de 2010 foi realizado o plantio da gramínea Andropogon gayanus Kunt. De fevereiro de 2010 a dezembro de 2017 dados de precipitação mensal e produção de biomassa foram classificadas em três grupos distintos, utilizando o método de Análise de Agrupamento Hierárquico (AAH). Verificou-se que há predominância de eventos (66.3%) com baixa produção de biomassa (média de 1929.3 kg ha-1), em função das baixas precipitações e ao estresse hídrico, comum em regiões semiáridas. As maiores produções de biomassa são registradas durante a época de floração da gramínea que acontece no final do período chuvoso. Os dados e informações obtidos neste estudo auxiliam no entendimento dos processos hidrológicos subsequentes (chuva-escoamento), porém não analisados neste estudo.
Helba Araujo De Queiroz Palacio; Eunice Maia De Andrade; Janielly Pereira Da Silva; Ruth Candido Dos Santos; Maria Mayara De Oliveira Souza. DINÂMICA SAZONAL DA PRODUÇÃO DE BIOMASSA HERBÁCEA EM ÁREA DE GRAMÍNEA NO SEMIÁRIDO DO BRASIL. Conexões - Ciência e Tecnologia 2019, 13, 99 -104.
AMA StyleHelba Araujo De Queiroz Palacio, Eunice Maia De Andrade, Janielly Pereira Da Silva, Ruth Candido Dos Santos, Maria Mayara De Oliveira Souza. DINÂMICA SAZONAL DA PRODUÇÃO DE BIOMASSA HERBÁCEA EM ÁREA DE GRAMÍNEA NO SEMIÁRIDO DO BRASIL. Conexões - Ciência e Tecnologia. 2019; 13 (5):99-104.
Chicago/Turabian StyleHelba Araujo De Queiroz Palacio; Eunice Maia De Andrade; Janielly Pereira Da Silva; Ruth Candido Dos Santos; Maria Mayara De Oliveira Souza. 2019. "DINÂMICA SAZONAL DA PRODUÇÃO DE BIOMASSA HERBÁCEA EM ÁREA DE GRAMÍNEA NO SEMIÁRIDO DO BRASIL." Conexões - Ciência e Tecnologia 13, no. 5: 99-104.
The bean is an important crop in feeding the global population. In the northeast of Brazil, it is of particular importance, since it is a staple food, which also generates employment and income. The low productivity of the northeast in recent years due to the water crisis combined with the cost of energy has compromised technical and economic viability. This study aimed to evaluate production parameters of cowpea (Vigna unguiculata (L.) Walp.) under different alternative production systems in the northeast of Brazil. The study was carried out in the experimental area of the sewage treatment plant (STP) in the district of Tianguá, Ceará. The experiment comprised six production systems (treatments) divided into split plots distributed in a completely randomised design with fifteen replications. The systems irrigated with wastewater and amended with different of fertilisers were no fertiliser (S2A0), mineral fertiliser (S2A1) and organic fertiliser (S2A2), as well as systems irrigated with drinking (S1A0, S1A1 and S1A2). It was found that under the systems irrigated with wastewater, the average productivity was 1468.8 kg ha−1, whereas under the systems irrigated with drinking water, it was 984.1 kg ha−1. The production systems that used wastewater (S2A0, S2A1 and S2A2) resulted in greater productivity compared to the production models irrigated with drinking water with organic fertiliser (S1A2) and with no fertiliser (S1A0). All the production models irrigated with wastewater yielded similar results to the conventional system with mineral fertiliser, showing that treated wastewater contains sufficient nutrients to potentially replace mineral fertilisers in cowpea production in the northeast of Brazil. The use of treated domestic effluent increases the productivity of irrigated crops.
Erialdo O. Feitosa; Fernando Bezerra Lopes; Eunice M. Andrade; Ana C. M. Magalhães; Cley A. S. Freitas. Production Indicators in Cowpea as a Function of the Water–Fertiliser Nexus. Agronomy 2019, 9, 691 .
AMA StyleErialdo O. Feitosa, Fernando Bezerra Lopes, Eunice M. Andrade, Ana C. M. Magalhães, Cley A. S. Freitas. Production Indicators in Cowpea as a Function of the Water–Fertiliser Nexus. Agronomy. 2019; 9 (11):691.
Chicago/Turabian StyleErialdo O. Feitosa; Fernando Bezerra Lopes; Eunice M. Andrade; Ana C. M. Magalhães; Cley A. S. Freitas. 2019. "Production Indicators in Cowpea as a Function of the Water–Fertiliser Nexus." Agronomy 9, no. 11: 691.
Jacques Carvalho Ribeiro Filho; Luis Cesar De Aquino Lemos Filho; Eunice Andrade; Paulo Cesár Moura Da Silva; Mateus Pessoa Caminha. Incertezas na estimativa da interceptação vegetal por modelos físicos em microclima de altitude em semiárido tropical. Scientia Forestalis 2019, 47, 1 .
AMA StyleJacques Carvalho Ribeiro Filho, Luis Cesar De Aquino Lemos Filho, Eunice Andrade, Paulo Cesár Moura Da Silva, Mateus Pessoa Caminha. Incertezas na estimativa da interceptação vegetal por modelos físicos em microclima de altitude em semiárido tropical. Scientia Forestalis. 2019; 47 (123):1.
Chicago/Turabian StyleJacques Carvalho Ribeiro Filho; Luis Cesar De Aquino Lemos Filho; Eunice Andrade; Paulo Cesár Moura Da Silva; Mateus Pessoa Caminha. 2019. "Incertezas na estimativa da interceptação vegetal por modelos físicos em microclima de altitude em semiárido tropical." Scientia Forestalis 47, no. 123: 1.
Entre los servicios ecosistémicos prestados al hombre se encuentran el agua potable, los alimentos, la biomasa, la calidad del aire y la regulación climática. En las tierras secas del planeta, los habitantes ejercen una fuerte presión en los ecosistemas, para la producción de alimentos y biomasa. Este trabajo plantea cómo los servicios ambientales son alterados por el manejo de la vegetación en un bosque tropical seco. La investigación se desarrolla en dos microcuencas (
Eunice Andrade; Helba Araujo De Queiroz Palácio; Julio César Neves Dos Santos; José Bandeira Brasil; Joaquín Navarro Hevia. Procesos ecohidrológicos y servicios ecosistémicos en regiones secas. Cuadernos de la Sociedad Española de Ciencias Forestales 2019, 45, 241 -250.
AMA StyleEunice Andrade, Helba Araujo De Queiroz Palácio, Julio César Neves Dos Santos, José Bandeira Brasil, Joaquín Navarro Hevia. Procesos ecohidrológicos y servicios ecosistémicos en regiones secas. Cuadernos de la Sociedad Española de Ciencias Forestales. 2019; 45 (1):241-250.
Chicago/Turabian StyleEunice Andrade; Helba Araujo De Queiroz Palácio; Julio César Neves Dos Santos; José Bandeira Brasil; Joaquín Navarro Hevia. 2019. "Procesos ecohidrológicos y servicios ecosistémicos en regiones secas." Cuadernos de la Sociedad Española de Ciencias Forestales 45, no. 1: 241-250.
Agricultural production in the semi-arid region is critically important for ensuring food security and agricultural development in world. However, due to the environmental impact generated by agricultural activity, and the challenge of producing food for a growing demand, agriculture is dependent on a constant flow of non-renewable environmental and economic resources. The aim of this study was to quantify the sustainability of different agricultural production systems papaya (Carica papaya L.) and sorghum (Sorghum bicolor [L.] Moench) in the semi-arid region using emergy analysis. The research was carried out in the Curupati Irrigated Perimeter, located in the municipality of Jaguaribara, Ceará (CE), Brazil, corresponding to the cultivation of the irrigated papaya and in the Lagoa Grande settlement, in the Chapada do Apodi, municipality of Tabuleiro do Norte, CE, referring to sorghum cultivation in the rainfed. The rainfed production system had an emergy value of 1.06E+16 seJ ha-1 yr-1, and was lower than in the irrigated system 1.69E+17 seJ ha-1 yr-1. The following values were obtained for the emergy indicators in the irrigated system: emergy yield ratio (EYR) = 1.51; renewability (R%) = 74.29%; environmental load ratio (ELR) = 0.35, and emergy sustainability index (ESI) = 4.37. Where as in the rainfed system, the EYR = 1.13; R% = 83.81%; ELR = 0.20 and ESI = 5.86. The system of production under the rainfed regime therefore displayed better economic, social and environmental performance in relation to the irrigated production system. Both of the studied production systems contributed to the economic growth of the semi-arid region, with low environmental loads.
Erialdo O. Feitosa; Fernando Bezerra Lopes; Eunice M. Andrade; Helba A.Q. Palácio; Francisco M.L. Bezerra. Sustainability of different production systems papaya (Carica papaya L.) and sorghum (Sorghum bicolor [L.] Moench) in the semi-arid region. Chilean journal of agricultural research 2019, 79, 114 -123.
AMA StyleErialdo O. Feitosa, Fernando Bezerra Lopes, Eunice M. Andrade, Helba A.Q. Palácio, Francisco M.L. Bezerra. Sustainability of different production systems papaya (Carica papaya L.) and sorghum (Sorghum bicolor [L.] Moench) in the semi-arid region. Chilean journal of agricultural research. 2019; 79 (1):114-123.
Chicago/Turabian StyleErialdo O. Feitosa; Fernando Bezerra Lopes; Eunice M. Andrade; Helba A.Q. Palácio; Francisco M.L. Bezerra. 2019. "Sustainability of different production systems papaya (Carica papaya L.) and sorghum (Sorghum bicolor [L.] Moench) in the semi-arid region." Chilean journal of agricultural research 79, no. 1: 114-123.
Understanding the spectral behaviour of water is of the greatest importance to the quality management of water resources. Continuous monitoring by remote sensing is therefore essential for administrators seeking the efficient management of its many uses. The aim of this research was to characterise the spectral response of water submitted to different concentrations of sediments of varying textural properties, organic matter and salts, and to identify the implications of these characteristics using simplified modelling. The experiment was conducted at the Radiometry Laboratory of the Department of Agricultural Engineering of the Federal University of Ceará, Brazil. The soils used in the research came from two areas of irrigated agriculture in Ceará, one in Morada Nova and the other in Pentecoste. Both soils were classified as Fluvic Neosols; the first saline and the second saline-sodic, and presented significant differences in granulometric composition and organic matter content. From the results, it can be concluded that: (i) sediments added at different concentrations cause an increase and deformation of the reflectance curves, and that maximum spectral partitioning occurs at two reflectance peaks; (ii) derivative analysis favours the identification of wavelengths that best differentiate sediment concentration, allowing more-efficient modelling of the process; (iii) the characteristics of texture, organic matter and salt content have little effect on estimating suspended-sediment concentration in the water, making multiple linear regression modelling a viable option for this purpose.
J. W. B. Lopes; Fernando Bezerra Lopes; Eunice Andrade; L. C. G. Chaves; M. G. R. Carneiro. Spectral Response of Water Under Different Concentrations of Suspended Sediment: Measurement and Simplified Modeling. Journal of Agricultural Science 2019, 11, p327 .
AMA StyleJ. W. B. Lopes, Fernando Bezerra Lopes, Eunice Andrade, L. C. G. Chaves, M. G. R. Carneiro. Spectral Response of Water Under Different Concentrations of Suspended Sediment: Measurement and Simplified Modeling. Journal of Agricultural Science. 2019; 11 (3):p327.
Chicago/Turabian StyleJ. W. B. Lopes; Fernando Bezerra Lopes; Eunice Andrade; L. C. G. Chaves; M. G. R. Carneiro. 2019. "Spectral Response of Water Under Different Concentrations of Suspended Sediment: Measurement and Simplified Modeling." Journal of Agricultural Science 11, no. 3: p327.
Luiz Carlos Guerreiro Chaves; Fernando Bezerra Lopes; Anthony Rafael Soares Maia; Ana Célia Maia Meireles; Eunice Maia De Andrade. Water quality and anthropogenic impact in the watersheds of service reservoirs in the Brazilian semi-arid region. REVISTA CIÊNCIA AGRONÔMICA 2019, 50, 1 .
AMA StyleLuiz Carlos Guerreiro Chaves, Fernando Bezerra Lopes, Anthony Rafael Soares Maia, Ana Célia Maia Meireles, Eunice Maia De Andrade. Water quality and anthropogenic impact in the watersheds of service reservoirs in the Brazilian semi-arid region. REVISTA CIÊNCIA AGRONÔMICA. 2019; 50 (2):1.
Chicago/Turabian StyleLuiz Carlos Guerreiro Chaves; Fernando Bezerra Lopes; Anthony Rafael Soares Maia; Ana Célia Maia Meireles; Eunice Maia De Andrade. 2019. "Water quality and anthropogenic impact in the watersheds of service reservoirs in the Brazilian semi-arid region." REVISTA CIÊNCIA AGRONÔMICA 50, no. 2: 1.
The dynamics of land use and land cover in watersheds of the Brazilian semi-arid region is not only influenced by human action, but also by the climatic seasonality of the region. Knowledge of the relationship between surveys of land use and land cover using geotechnology and the climatic seasonality of semi-arid regions is necessary. The aim of this study was to map and classify land use and cover in the watershed of the Orós reservoir (WSOR) with the help of geotechnology, and to identify the influence exerted by the climate on variations in the area of each class. The survey of land use and cover was carried out by means of the MAXVER method of classification of images from 2003, 2005, 2008 and 2013 from the LANDSAT 5 and LANDSAT 8 satellites. The areas of each class displayed dynamics influenced not only by human action but also by such factors as climate, topography and plant physiology. Years with high rainfall favoured classes such as thin scrub and dense scrub, with the opposite being seen in years considered as dry, when there was a considerable increase in areas of the anthropogenic class. Changes in the areas are caused by alterations in the deciduous vegetation; with leaf-fall during the dry season, these areas come to have the spectral response of areas with similar characteristics to the anthropogenic class. More-elevated regions favoured the presence of the dense-scrub class due to the microclimate and to the greater difficulty such areas present to human action.
Anthony Rafael Soares Maia; Fernando Bezerra Lopes; Eunice Maia de Andrade. Influence of Climatic Seasonality on a Survey of Land Use and Cover in the Semi-arid Region. Journal of Agricultural Science 2018, 10, p311 .
AMA StyleAnthony Rafael Soares Maia, Fernando Bezerra Lopes, Eunice Maia de Andrade. Influence of Climatic Seasonality on a Survey of Land Use and Cover in the Semi-arid Region. Journal of Agricultural Science. 2018; 10 (11):p311.
Chicago/Turabian StyleAnthony Rafael Soares Maia; Fernando Bezerra Lopes; Eunice Maia de Andrade. 2018. "Influence of Climatic Seasonality on a Survey of Land Use and Cover in the Semi-arid Region." Journal of Agricultural Science 10, no. 11: p311.
USO DA TERRA E INFLUÊNCIA NO ÍNDICE DE QUALIDADE DE ÁGUA: O CASO DO VALE DO RIO TRUSSU ELDIR BANDEIRA DA SILVA1; JOSÉ RIBEIRO DE ARAÚJO NETO2; HELBA ARAÚJO DE QUEIROZ PALÁCIO2; EUNICE MAIA DE ANDRADE1 E YARA RODRIGUES ARAÚJO2 1 Departamento de Engenharia Agrícola, Universidade Federal do Ceará-UFC, Campus do PICI, Bloco 804, Fortaleza-CE, Brasil. E-mail: [email protected]; [email protected] 2 Instituto Federal de Educação, Ciência e Tecnologia do Ceará-IFCE, Campus Iguatu, rodovia Iguatu-Várzea Alegre, Km 05, s/n, Iguatu-CE, Brasil. E-mail: [email protected]; [email protected]; [email protected] 1 RESUMO Com o objetivo de avaliar a influência do uso e ocupação da terra no índice de qualidade de água (IQA) nos corpos hídricos superficiais e subterrâneas no vale perenizado do rio Trussu, Ceará, Brasil, investigou-se dados de qualidade de água em dois períodos distintos. O primeiro foi de set/2002 a fev/2004 e o segundo de abr/2013 a jul/2015. Foram realizadas 22 coletas de água em 9 estações amostrais, 5 superficiais e 4 subterrâneas. Foram consideradas as mesmas estações nos dois períodos, monitorando-se 6 atributos de qualidade de água, totalizando 2376 análises. A avaliação da qualidade das águas foi relizada com o emprego do IQA e diagrama de caixa. As mudanças no uso e ocupação da terra foram nítidas, passando a caatinga densa de 38,7% de ocupação da área de estudo em 2003 para 11,2% em 2013. Não foi verificada diferença estatística (P
Eldir Bandeira Da Silva; José Ribeiro De Araújo Neto; Helba Araújo De Queiroz Palácio; Eunice Maia De Andrade; Yara Rodrigues Araújo. USO DA TERRA E INFLUÊNCIA NO ÍNDICE DE QUALIDADE DE ÁGUA: O CASO DO VALE DO RIO TRUSSU. IRRIGA 2018, 23, 1 .
AMA StyleEldir Bandeira Da Silva, José Ribeiro De Araújo Neto, Helba Araújo De Queiroz Palácio, Eunice Maia De Andrade, Yara Rodrigues Araújo. USO DA TERRA E INFLUÊNCIA NO ÍNDICE DE QUALIDADE DE ÁGUA: O CASO DO VALE DO RIO TRUSSU. IRRIGA. 2018; 23 (2):1.
Chicago/Turabian StyleEldir Bandeira Da Silva; José Ribeiro De Araújo Neto; Helba Araújo De Queiroz Palácio; Eunice Maia De Andrade; Yara Rodrigues Araújo. 2018. "USO DA TERRA E INFLUÊNCIA NO ÍNDICE DE QUALIDADE DE ÁGUA: O CASO DO VALE DO RIO TRUSSU." IRRIGA 23, no. 2: 1.
Iguatu Experimental Basin, located in the semi-arid region of northeastern Brazil. The aim of this study was to investigate the influence of rainfall characteristics on throughfall, stemflow and interception loss in a deciduous forest of a tropical semi-arid region, from a data series of eight consecutive years. The data were collected from 2010 to 2017, comprising a total of 225 events. Among the variables used to characterize rainfall, the maximum 30-min intensity (I30) best explained the interception losses, which is also well correlated to rainfall depth and event average intensity. The predominant events (67% of the total) are characterised by low rainfall depth, low I30 and higher interception loss (18% of the gross rainfall). In addition, there is a threshold between rainfall characteristics and the interception process: for rainfall and I30 lower than 20 mm and 15 mm/h respectively, and rainfall duration lower than 100 min, interception losses are usually higher than 30%, reaching up to 74%. For the remaining events, interception losses are mostly within the range of 10–20% of rainfall. The data and information on the interception process, presented in this study, helps the comprehension of the overall water balance in dry environments and improve the capacity for parameterization of hydrological models, contributing to a more efficient water and environmental management.
José Bandeira Brasil; Eunice Maia De Andrade; Helba Araújo De Queiroz Palácio; Pedro Henrique Augusto Medeiros; Julio Cesar Neves Dos Santos. Characteristics of precipitation and the process of interception in a seasonally dry tropical forest. Journal of Hydrology: Regional Studies 2018, 19, 307 -317.
AMA StyleJosé Bandeira Brasil, Eunice Maia De Andrade, Helba Araújo De Queiroz Palácio, Pedro Henrique Augusto Medeiros, Julio Cesar Neves Dos Santos. Characteristics of precipitation and the process of interception in a seasonally dry tropical forest. Journal of Hydrology: Regional Studies. 2018; 19 ():307-317.
Chicago/Turabian StyleJosé Bandeira Brasil; Eunice Maia De Andrade; Helba Araújo De Queiroz Palácio; Pedro Henrique Augusto Medeiros; Julio Cesar Neves Dos Santos. 2018. "Characteristics of precipitation and the process of interception in a seasonally dry tropical forest." Journal of Hydrology: Regional Studies 19, no. : 307-317.