Savannas of the Brazilian semiarid region: what do we learn from floristics?

Abstract Aim: The objective of this study was to investigate the spatial and temporal variation of microcrustacean assemblages of a reservoir in the Brazilian semiarid region. Methods Physical and chemical water variables and samples of microcrustaceans were collected at eight sites of the reservoir between July 2013 and November 2014, in a total of seven campaigns. For this study, the reservoir was categorized in two compartments: lateral and central. Results Limnological variables showed significant temporal variation (PERMANOVA, Pseudo-F = 19.51, p = 0.001). Higher turbidity values and suspended solids were observed in the rainiest months, while during the dry months, we measured higher values of transparency, dissolved oxygen, and chlorophyll-a. It was not found significant spatial variation of limnological variables (PERMANOVA, Pseudo-F = 0.96; p = 0.394). During the study period, ten species were recorded: four Cladocera (Ceriodaphnia cornuta, Daphnia gessneri, Diaphanosoma birgei and Diaphanosoma spinulosum ) three Copepoda Calanoida (Argyrodiaptomus azevedoi, Notodiaptomus cearensis and Notodiaptomus iheringi) and three Copepoda Cyclopoida (Macrocyclops albidus, Thermocyclops minutus and Thermocyclops decipiens). The microcrustacean assemblages showed significant temporal variation (PERMANOVA, Pseudo-F = 4.34; p = 0.001) as well as significant spatial variation (PERMANOVA, Pseudo-F = 9.46; p = 0.001). The highest values of abundance and richness were observed in the lateral compartment, this result is mainly related to the presence of aquatic macrophytes in this region, because the analysis of partial RDA indicated that limnological variables explained only 11% of this variation (Pseudo-F = 2.08, p = 0.001). Conclusions The results suggest that the seasonality of the semiarid is an important factor in the temporal dynamics of the limnological variables, while the aquatic macrophytes play an important role in the spatial distribution of the microcrustacean assembly.

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Drainage network extraction of Brazilian semiarid region with potential flood indication areas

10.1117/12.2066906 ◽

2014 ◽

Cited By ~ 1

Author(s):

Sergio Rosim ◽

João Ricardo de Freitas Oliveira ◽

Jussara de Oliveira Ortiz ◽

Miguel Zanic Cuellar ◽

Alexandre Copertino Jardim

Keyword(s):

Semiarid Region ◽

Drainage Network ◽

Brazilian Semiarid

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A New Species of Cordia sect. Gerascanthus (Cordiaceae) from a Brazilian Semiarid Region

Harvard Papers in Botany ◽

10.3100/hpib.v26iss2.2021.n10 ◽

2021 ◽

Vol 26 (2) ◽

Author(s):

Luan Pedro-Silva ◽

Thaynara Sousa Silva ◽

José Iranildo Miranda De Melo

Keyword(s):

New Species ◽

Semiarid Region ◽

Brazilian Semiarid ◽

A New Species

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Aspectos epidemiológicos e clínicos da febre chikungunya em um município do semiárido brasileiro / Epidemiological and clinical aspects of chikungunya fever in a municipality in the Brazilian semiarid region

Brazilian Journal of Development ◽

10.34117/bjdv7n7-202 ◽

2021 ◽

Vol 7 (7) ◽

pp. 69081-69099

Author(s):

Tatiane Aparecida Queiroz ◽

Francisca Patrícia Barreto De Carvalho ◽

Alfredo Marcelo Grigio ◽

Weslley Misael Bezerra Damasio ◽

Lara Candice Costa de Morais Leonez ◽

...

Keyword(s):

Semiarid Region ◽

Clinical Aspects ◽

Chikungunya Fever ◽

Brazilian Semiarid

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Subterranean “oasis” in the Brazilian semiarid region: neglected sources of biodiversity

Biodiversity and Conservation ◽

10.1007/s10531-021-02277-6 ◽

2021 ◽

Author(s):

Diego de M. Bento ◽

Marconi Souza-Silva ◽

Alexandre Vasconcellos ◽

Bruno C. Bellini ◽

Xavier Prous ◽

...

Keyword(s):

Semiarid Region ◽

Brazilian Semiarid

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THERMOREGULATORY RESPONSES OF GOATS REARED IN THE BRAZILIAN SEMIARID REGION

Investigação Científica e Técnica em Ciência Animal 2 ◽

10.22533/at.ed.2631912099 ◽

2019 ◽

pp. 62-68

Author(s):

Laylson da Silva Borges ◽

Geandro Carvalho Castro ◽

João Lopes Anastácio Filho ◽

Isak Samir de Sousa Lima ◽

Flávio Carvalho de Aquino ◽

...

Keyword(s):

Semiarid Region ◽

Thermoregulatory Responses ◽

Brazilian Semiarid

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Ethnopedological Studies to Characterize Neosols at the Brazilian Semiarid Region

Journal of Agricultural Science ◽

10.5539/jas.v11n4p536 ◽

2019 ◽

Vol 11 (4) ◽

pp. 536

Author(s):

Jucirema Ferreira da Silva ◽

Jeane Cruz Portela ◽

Nildo da Silva Dias ◽

Cezar Augusto Medeiros Rebouças ◽

Francisco Ernesto Sobrinho ◽

...

Keyword(s):

Chemical Analysis ◽

Agricultural Soils ◽

Close Relation ◽

Soil Types ◽

Semiarid Region ◽

Brazilian Semiarid ◽

Soil Landscape ◽

Chemical Attributes ◽

Pasture Area ◽

Physical And Chemical

The ethnopedological approach to soil characterization presents great challenges, since the understanding of the systems occurs through the knowledge acquired by the man in his coexistence with agroecosystems. The aim of the present research was to characterize the agricultural soils through morphological, physical and chemical analysis, using ethnopedological studies in the ‘Santa Agostinha’ Settlement Project, Caraúbas-RN, Brazil. Five areas were defined for study in the soil/landscape relation: i) area with cashew cultivation; ii) area of pasture; iii) area of crops in consortium; iv) agroforestry; and v) preserved forest, used as the reference. Participatory workshops, exchanges and classifications (from the locals and formal) were carried out with the analysis of the morphological, physical and chemical attributes of the studied soils in the layers of 0.00-0.10, 0.10-0.20 and 0.20-0.30 m. The results of the ethicist classification, based on the attributes evaluation were: Quartzarenic latosol NEOSOL (cashew area); Regolitic euthrofic NEOSOL (pasture area); Ortic quartzarenic fragiudult NEOSOL (intercropping area); typical quartzarenic ortic NEOSOL (agroforestry area and typical hydromorphic quartzarenic NEOSOL that presented a close relation with the emicist classification (from the local people). The observation of the different soil types in the landscape, due to the stratification of the environments, allowed the growers to identify characteristics associated with soil potentials and restrictions and, consequently, the correct management to be adopted. The experiences of local growers in the participatory workshops provided an exchange of popular and scientific knowledge, as well as new perspectives of coexistence with the semiarid.

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Quality variables for technological application of cocoa clones from the Brazilian semiarid region

Revista Brasileira de Engenharia Agrícola e Ambiental ◽

10.1590/1807-1929/agriambi.v25n3p203-208 ◽

2021 ◽

Vol 25 (3) ◽

pp. 203-208

Author(s):

Bianca M. Reges ◽

Anielly M. Maia ◽

Diogenes H. A. Sarmento ◽

Mayara S. Silva ◽

Sandra M. L. dos Santos ◽

...

Keyword(s):

Titratable Acidity ◽

Physicochemical Characteristics ◽

Soluble Solids ◽

Semiarid Region ◽

Transverse Diameter ◽

Brazilian Semiarid ◽

Physical Traits ◽

Chemical Traits ◽

Food Processes ◽

Longitudinal Diameter

ABSTRACT Characterization of cocoa clones produced in the semiarid region is necessary to enlarge the database about these implanted clones and thus enhance the quality of their by-products. Therefore, this study aims to evaluate physical, chemical, and physicochemical characteristics of the CCN 51, CEPEC 2004, CEPEC 2005, and PS 1319 clones, produced in the region of Vale do Jaguaribe in the state of Ceará (Brazil), and to suggest food processes or products for them. The clones were evaluated according to their physical traits (total fruit mass, rind, pulp, seeds, and placenta and pulp with seeds), fruit transverse diameter (FTD), fruit longitudinal diameter (FLD), the ratio FTD/FLD; rind external thickness (ERT), rind internal thickness (IRT), the ratio ERT/IRT, number of seeds, seed thickness, seed transverse diameter (STD), seed longitudinal diameter (SLD), and the ratio STD/SLD, yield, pulp color, chemical traits (humidity, lipids, proteins, ashes, crude fiber, and carbohydrates), and physicochemical traits (titratable acidity, pH, soluble solids, and reducing sugars) were evaluated. The CCN 51 and CEPEC 2005 clones are the most suitable for the process of cocoa fermentation. For desserts, jams, pulp, and nibs for fat-restricted diets, the most suitable clones are CCN 51, CEPEC 2005, PS 1319 and CEPEC 2004, respectively.

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