Caatinga vegetation
The community of hummingbirds (Aves: Trochilidae) and the assemblage of flowers in a Caatinga vegetation
... We studied hummingbirds and their food plants in an area of caatinga vegetation. We specifically examined their seasonal use of this habitat, migratory and non-migratory status, their foraging strategies ...
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Hummingbirds (Aves: Trochilidae) and their floral resources in an area of caatinga vegetation in the Chapada Diamantina, Bahia State, Northeast Brazil.
... of caatinga vegetation in the Chapada Diamantina, Bahia State, Northeast ...of caatinga vegetation, examining their seasonal activities, the assemblages of plants that they used, as well as ...
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DISTANCE FROM ROADS AND CITIES AS A PREDICTOR OF HABITAT LOSS AND FRAGMENTATION IN THE CAATINGA VEGETATION OF BRAZIL
... remaining vegetation, 145 km of paved roads and the seven small-sized cities set in the study ...remaining vegetation as it dropped from 18% at 12 km distant to ...remaining vegetation was reduced by ...
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Seasonal variations in scorpion activities (Arachnida: Scorpiones) in an area of Caatinga vegetation in northeastern Brazil
... the caatinga is almost cer- tainly a determining factor for above-ground scorpion activity (foraging and/or reproduction) due to the marked influence rainfall and temperature patterns exert on that ...
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Plant diversity influencing structure and functioning of Caatinga vegetation
... Terrestrial vegetation is a dynamic component of global carbon cycle and is particularly sensitive to the variability of rainfall and temperature predicted for the next decades 8 ...
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Leaf architecture of Rubiaceae Juss. from caatinga vegetation in Brazil
... (A) Borreria spinosa , detail of branched tertiary veins; (B-D) Borreria verticillata , B- with the fourth and fifth order dichotomized veins, C- undeveloped areolas and D- extended[r] ...
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Pollination syndromes in a Caatinga plant community in northeastern Brazil: seasonal availability of floral resources in different plant growth habits
... The majority of the species (82.6%) in Cariri Paraibano were hermaphroditic, a similar situation to that observed in other tropical ecosystems (see Machado and Lopes, 2004; Parra-Tabla and Bullock, 2002). The proportion ...
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Dinâmica do uso e ocupação do solo em uma bacia hidrográfica do semiárido brasileiro.
... ‘caatinga’ vegetation by grazing ...native vegetation has been replaced by a landscape increasingly devastated, fragmented and heterogeneous, as shown by the index of landscape ...
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Temporal variations of Collembola (Arthropoda: Hexapoda) in the semiarid Caatinga in northeastern Brazil
... by Caatinga dryland vegetation which experiences distinct seasonal alterations of its physiognomy linked to regional rainfall ...of Caatinga vegetation in Northeastern Brazil during a 12- ...
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Birds from open environments in the caatinga from state of Alagoas, northeastern Brazil.
... the caatinga has been identified as an important area of endemism for South American birds, few studies have been conducted on the distribution, evolution and ecology of birds in this ...a caatinga area and ...
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Termite assemblages (Blattodea: Isoptera) in a habitat humidity gradient in the semiarid region of northeastern Brazil
... A total of 45 termite species belonging to the three princi- pal families occurring in Brazil (Termitidae, Rhinotermitidae, and Kalotermitidae) were encountered in the three phytophy- siognomies studied (Table 1). Of the ...
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MANIPULATION OF NATURAL GRASSLAND IN SEMIARID REGION: A REVIEW
... the Caatinga is one of the most densely populated areas in the world and having agriculture and livestock farming as its main activities, it has been suffering a process of desertification over the years, ...
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Horizontal Stratification of the Sand Fly Fauna (Diptera: Psychodidae) in a Transitional Vegetation between Caatinga and Tropical Rain Forest, State of Bahia, Brazil
... of caatinga and Atlantic Forest, occupying, in part, transition areas of both types of ...a caatinga vegetation, whilst in Jitaúna, the vegetation characteristics are distinct, being of mainly ...
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Utilização de índices de vegetação para os sistemas de informação geográfica - USE OF ÃNDEX VEGETATION FOR THE GEOGRAPHIC INFORMATION SYSTEM
... • CTVI (Corrected Transformed Vegetation Index): proposto por Perry e Lautenschlager (1984) citado por EASTMAN (1998) pretende corrigir o TVI adicionando a constante de 0.50 para todos os valores NDVI, nem sempre ...
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Degradação da Caatinga : uma investigação ecogeográfica / DEGRADATION OF CAATINGA: AN INVESTIGATION GEOGRAPHICAL ECOLOGY
... da caatinga ocupa uma área de cerca de ...da caatinga como pastagem extensiva vem causando degradações fortes e por vezes irreversíveis nesse ...da caatinga e que estas se refletem em seu ...
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HYPERSPECTRAL HYPERION IMAGERY ANALYSIS AND ITS APPLICATION USING SPECTRAL ANALYSIS
... Rapid advancement in remote sensing open new avenues to explore the hyperspectral Hyperion imagery pre-processing techniques, analysis and application for land use mapping. The hyperspectral data consists of 242 bands ...
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Uso do solo em ambientes semiáridos: efeitos sobre a estrutura da vegetação e interação entre plantas em uma floresta tropical seca
... The experiment was conducted in a farm located near the Açu National Forest, Rio Grande do Norte state, Brazil, 5°32'23.01"S and 36°57'18.66"O coordinates. The climate is semi-arid with average annual rainfall ...
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Paisagens sertanejas: uso e cobertura das terras e no sertão central do Ceará
... Ripária, Caatinga Arbustiva Aberta e Caatinga Arbustiva Densa; e que a região apresenta-se com uma porcentagem significativa de cobertura natural (65%), mas esta apresenta-se bastante fragmentada em manchas ...
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CAATINGA E DESERTIFICAÇÃO.
... the Caatinga Biome has been generating processes of desertification in several areas, directly altering the biota, the microclimate and the soils, being essential the development of research techni- ques able to ...
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Pollen morphology of Rubiaceae Juss. species occurring in an area of caatinga (dryland) vegetation in Bahia State, Brazil
... (Morfologia polínica de espécies de Rubiaceae ocorrentes em uma área de caatinga no estado da Bahia, Brasil). Rubiaceae foi representada na fl ora de Brejinho das Ametistas por dezesseis espécies, as quais foram ...
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