|
|
|
| Registros recuperados: 74 | |
|
|
| Coutinho,Flavia Paiva; Cavalcanti,Maria Auxiliadora de Queiroz; Yano-Melo,Adriana Mayumi. |
| Rhizosphere soil samples were collected in a semiarid area, in the region of the São Francisco River valley, Petrolina, Pernambuco state, Brazil, to study the diversity of filamentous fungi in a soil cultivated with melon (Cucumis melo L. cv. Gold Mine) and receiving different organic amendments: Treatment 1 (control, without organic compost); T2 (77% coconut fiber, 20% goat manure and 3% K2SO4); T3 (10% Ricinus communis leaves and stems, 50% Pennisetum purpureum leaves and 40% goat manure); T4 (77% coconut fiber, 20% goat manure and 3% termophosphate); T5 (47% Pennisetum purpureum leaves, 50% goat manure and 3% K2SO4); and T6 (57% Pennisetum purpureum leaves, 40% goat manure and 3% termophosphate). Fungal isolation was carried out by the serial dilution... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Semiarid; São Francisco River valley; Soil amendments; Microorganism. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062010000100032 |
| |
|
|
| Frosi,Gabriella; Harand,Wolfgang; Oliveira,Marciel Teixeira de; Pereira,Silvia; Cabral,Simone Pereira; Montenegro,Abelardo Antônio de Assunção; Santos,Mauro Guida. |
| ABSTRACT The effects of water deficit on physiological and biochemical variables of young plants of two tropical woody species, Pachira aquatica and Sterculia foetida, and their recovery abilities were measured. Leaf water potential, gas exchange and selected carbon metabolism components were measured in a greenhouse experiment with control, moderate and severe water deficit treatments. Under severe drought stress, gas exchange and chlorophyll fluorescence decreased in both species compared to their respective controls. After rehydration, P. aquatica and S. foetida showed a partial and full recovery of the measured variables, respectively. In addition, a decrease and an increase in photosynthetic pigments were observed for P. aquatica and S. foetida,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chlorophyll fluorescence; Climate changes; Gas exchange; Semiarid; Water deficit. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000200153 |
| |
|
| |
|
| |
|
| |
|
| |
|
|
| Leite, João Ricardo Avelar; Sales, Eleuza Clarete Junqueira de; Monção, Flávio Pinto; Guimarães, Adriano de Souza; Rigueira, João Paulo Sampaio; Gomes, Virgílio Mesquita. |
| This study aimed to evaluate the structural, productive and nutritional characteristics of cactus pear (Nopalea cochenillifera Salm Dyck. cv. Miúda/Doce) under five nitrogen doses and two planting orientations. A randomized block design in a 5 x 2 factorial scheme was used in the scheme: five nitrogen doses (0, 150, 300, 450 and 600 kg of N ha-1), and two planting orientations (North/South and East/West), with three replicates. Except for the thickness of the secondary (p = 0.04) and tertiary cladodes (p = 0.02), the morphometric characteristics of the cactus pear were not influenced by the nitrogen doses (p > 0.05). The mean height was 120 cm, the areas of the primary, secondary and tertiary cladodium were 160.9; 208 and 158.4 cm², respectively. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ciências Agrárias; Zootecnia; Forragicultura e Pastagens biomass; Management; Morphometry; Semiarid; Viability.. |
| Ano: 2018 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/38325 |
| |
|
| |
|
|
| ALVALÁ,REGINA C.S.; CUNHA,ANA PAULA M.A.; BRITO,SHEILA S.B.; SELUCHI,MARCELO E.; MARENGO,JOSÉ A.; MORAES,OSVALDO L.L.; CARVALHO,MAGOG A.. |
| ABSTRACT Drought is a natural and recurrent phenomenon. It is considered ‘a natural disaster’ whenever it occurs in an intensive manner in highly populated regions, resulting in significant damage (material and human) and loss (socioeconomic). This paper presents the efforts developed to monitor the impact of drought in the semiarid region of Northeast Brazil. In this scope, information from different sources is compiled to support the evaluation and identification of impacted municipalities, with the main objective of supporting emergency actions to mitigate their impact. In the semiarid region of Brazil there are frequent occurrences of dry periods during the rainy season, which, depending on the intensity and duration, can cause significant damage to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agriculture; Drought impacts; Drought monitoring; Semiarid; Dry farming; Northeast Brazil. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000200502 |
| |
|
| |
|
| |
|
|
| FREIRE,JOELMA DE L.; SANTOS,MÉRCIA VIRGINIA F. DOS; DUBEUX JÚNIOR,JOSÉ CARLOS B.; BEZERRA NETO,EGÍDIO; LIRA,MÁRIO DE A.; CUNHA,MÁRCIO V. DA; SANTOS,DJALMA C. DOS; AMORIM,SILVANIA O. DE; MELLO,ALEXANDRE CARNEIRO L. DE. |
| Abstract Soil and water salinity are considered the main limiting factors of plant production. This work aimed to evaluate the influences of irrigation frequency and soil salinity on the development of cactus pear cv. Miúda (Nopalea cochenillifera Salm Dyck). The experiment was conducted in factorial arrangement of four salinity levels: 0.3 (control), 0.5 (low), 1.5 (medium) and 3.6 (high salinity) (ds m-1), associated with four irrigation frequencies (each 7, 14, 21 and 28 days) and two soil textures (sandy and sandy loam) in a randomized block design with four replicates. One cladode was planted in each polyethylene pot containing 10 kg of soil. The soil texture influenced some of the morphological characteristics of the cactus pear, so that plants grown... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cladodes; Forage; Salt stress; Semiarid. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000703893 |
| |
|
| |
|
| |
|
| |
|
|
| Lima,Vandeberg F.; Brito,Samuel V.; Araujo Filho,João A.; Teles,Diêgo A.; Ribeiro,Samuel C.; Teixeira,Adonias A. M.; Pereira,Antonio M. A.; Almeida,Waltécio O.. |
| Abstract We investigated the parasites of five lizard species belonging to Phyllodactylidae (Phyllopezus pollicaris and Gymnodactylus geckoides) and Gekkonidae (Hemidactylus agrius, Lygodactylus klugei and Hemidactylus brasilianus) families in a semiarid region of Brazil. Six nematode species were identified: Parapharyngodon alvarengai and Spauligodon oxkutzcabiensis (Pharyngodonidae), Physaloptera lutzi (Physalopteridae), Skrjabinelazia intermedia (Seuratidae), Trichospirura sp. (Rhabdochonidae) and Piratuba sp. (Onchocercidae), and a cestode species, Oochoristica sp. (Linstowiidae). The most prevalent species were Spauligodon oxkutzcabiensis, which infected P. pollicaris (75%), and Parapharyngodon alvarengai, which infected G. geckoides (29%). South... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Squamata; Nematoda; Cestoda; Geckos; Semiarid. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000400501 |
| |
|
|
| Coelho-Lima,Alcéster Diego; Jucá,Marcelo Almeida De Sousa; Fonseca,Ellen Beatriz Fontes da; Medeiros,Leticia Cely Vieira de; Soares,Pamella Barbara Coutinho; Cunha,Paulo Victor Araujo; Passos,Daniel Cunha. |
| Abstract: The zoologist Dr. José Santiago Lima-Verde (1945-2019) made a number of major contributions to the field of animal biology in the northeastern Brazil, in particular through his research with snakes. While employed as a professor at Escola Superior de Agricultura de Mossoró, currently the Universidade Federal Rural do Semi-Árido, Prof. Lima-Verde established a herpetological collection which remained forgotten for a number of decades. In the present study, we describe the revitalization of this collection, which included the updating of the identification of the species and the compilation of the metadata on the collection, which is now named the Coleção Herpetológica Lima-Verde. We catalogued 80 specimens representing 30 species, including 23... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biodiversity; Caatinga; Northeastern Brazil; Scientific Collections; Semiarid. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032020000100205 |
| |
|
|
| Santana,Diego José; Mângia,Sarah; Silveira- Filho,Ricardo Rodrigues da; Silva Barros,Lívia Cláudia da; Andrade,Igor; Napoli,Marcelo Felgueiras; Juncá,Flora; Garda,Adrian Antonio. |
| The Middle Jaguaribe River region is a poorly sampled area in the Caatingas domain, located in the eastern Ceará State, northeastern Brazil. The Brazilian government agencies considered this region as a priority area for conservation and inventories. In order to fill this biodiversity knowledge gap, we conducted a ten-day rapid inventory of the anuran fauna from April 11 to 20, 2014, surveying different physiognomies of the region. We recorded 19 anuran species belonging to five families: Bufonidae (2), Hylidae (5), Leptodactylidae (9), Microhylidae (2) and Odontophrynidae (1). Most inventories of Caatinga amphibians published to date have been conducted inside protected areas and/or of high altitude (mesic areas known as "brejos de altitude"). The list we... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amphibians; Caatinga; Semiarid; Species list; Biodiversity. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032015000300201 |
| |
|
|
| Correia,Cláudia Letícia de Souza Barros; Conceição,Adilva de Souza. |
| Abstract Chamaecrista has a Pantropical distribution, with some occurrences in Australia and temperate areas, and includes about 330 species, of which 266 occur in the Americas. The genus is represented in Brazil by 256 species, of which 97 are cited for the northeast Region. The Ecological Station Raso da Catarina (ESRC) is one of the largest areas of protected Caatinga and occupies about 105,282.00 ha., delimited by the coordinates 09°39’0.30” to 09°50’98.2” S and 38°26’57.5” to 38°29’32.6” W. The floristic survey of Chamaecrista in the ESRC included analysis of specimens collected from March 2010 and October 2011. The analyses were supplemented with dried collections from the following herbaria: ALCB, EAC, HRB, HUEFS and MBM. The genus is represented in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Floristics; Taxonomy; Semiarid; Caatinga; Diversity. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000200302 |
| |
|
|
| Dourado,Diego Augusto Oliveira; Conceição,Adilva de Souza; Santos-Silva,Juliana. |
| This work consists of a floristic survey of the genus Mimosa L. in APA Serra Branca/Raso da Catarina, located in Jeremoabo, Bahia, Brazil. We analyzed specimens collected from June/2010 to October/2011 and collections deposited in the ALCB, HRB, HUEFS, and MBM herbaria. We registered 11 species distributed in two sections: Mimosa sect. Batocaulon DC. (Mimosa acutistipula (Mart.) Benth. var.acutistipula, M. adenophylla var. mitis Barneby, M. arenosa (Willd.) Poir. var. arenosa, M. caesalpiniifolia Benth., M. lewisii Barneby, M. misera Benth., M. piscatorum Barneby, M. quadrivalvis var. leptocarpa (DC.) Barneby, and M. tenuiflora (Willd.) Poir.) and Mimosa sect. Mimosa (M. pudica var. tetrandra (Humb. & Bonpl. ex Willd.) DC. And M. sensitive L. var.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Caatinga; Diversity; Floristic; Jeremoabo; Semiarid. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400225 |
| |
| Registros recuperados: 74 | |
|
|
|
