Results 41 to 50 of about 23,399 (310)

Caatinga Albedo Preserved and Replaced by Pasture in Northeast Brazil

open access: yesAtmosphere, 2021
The caatinga is considered South America’s largest seasonally dry tropical forest (SDTF) and one of the most vulnerable endemic biomes in relation to climate change.
Alcindo Mariano Souza   +2 more
semanticscholar   +1 more source

Aves em oito áreas de Caatinga no Sul do Ceará e Oeste de Pernambuco, nordeste do Brasil: composição, riqueza e similaridade

open access: yesPapéis Avulsos de Zoologia, 2005
Inventários rápidos realizados em diferentes pontos no sul do Ceará e oeste de Pernambuco em julho e setembro de 2004 encontraram um total de 209 espécies de aves.
Fábio Olmos   +2 more
doaj   +1 more source

The flexible, the stereotyped and the in‐between: putting together the combinatory tool use origins hypothesis

open access: yesBiological Reviews, EarlyView.
ABSTRACT Tool use research has long made the distinction between tool using that is considered learned and flexible, and that which appears to be instinctive and stereotyped. However, animals with an inherited tool use specialisation can exhibit flexibility, while tool use that is spontaneously innovated can be limited in its expression and facilitated
Jennifer A. D. Colbourne   +1 more
wiley   +1 more source

Improving glass Ionomer performance through plant extracts: a systematic review of in vitro studies

open access: yesBiomaterial Investigations in Dentistry
Objective: This systematic review aimed to systematically map and synthesize the available evidence from in vitro studies on the modification of Glass Ionomer Cements (GICs) with plant extracts, with a specific focus on evaluating their effects on the ...
Israel Luís Diniz Carvalho   +7 more
doaj   +1 more source

Taxonomic treatment, geographic distribution and preliminar conservation status of Croton sect. Barhamia subsect. Barhamia (Euphorbiaceae) in Brazil

open access: yesNordic Journal of Botany, EarlyView.
The genus Croton (Euphorbiaceae) is an exceptionally megadiverse genus, encompassing roughly 1200 species that are predominantly distributed across tropical regions globally. For the New World, the genus is organized into three subgenera (Adenophylli, Geiseleria and Quadrilobi) and 31 sections, with C. sect. Barhamia standing out with its approximately
Nicolas Giovanny Burilli   +2 more
wiley   +1 more source

Avaliação da serapilheira em área de mata ciliar na bacia do rio Gurguéia sul do Piauí

open access: yesRevista Verde de Agroecologia e Desenvolvimento Sustentável, 2015
Esse trabalho teve como objetivo avaliar ciclagem de nutrientes, através da deposição, estoque e decomposição de serapilheira em um remanescente de mata ciliar na Bacia do Rio Gurguéia.
Jaina Teresa Franco Costa   +5 more
doaj   +1 more source

Riparian Vegetation Structure in a Conservation Unit in the Semi-Arid Region of Paraíba, Brazil

open access: yesFloresta e Ambiente, 2020
This study aimed to carry out a phytosociological survey in a riparian area of an intermittent stream in the semi-arid region of Paraíba, Brazil. Fifty-one contiguous plots of 10 × 20 m (1.02 ha) were distributed along the watercourse.
Alecksandra Vieira de Lacerda   +1 more
doaj   +1 more source

Taxonomy and diversity of Marcgraviaceae, north of the São Francisco river, northeast Brazil

open access: yesNordic Journal of Botany, EarlyView.
This study provides a comprehensive assessment of Marcgraviaceae species diversity north of the São Francisco river in northeastern Brazil, analyzing species richness and distribution patterns across 384 000 km² of phytogeographic domains. Through field collections, herbarium studies (both physical and digital), and detailed morphological analyses, we ...
Thales Carvalho   +4 more
wiley   +1 more source

Diversidade polínica das Mimosoideae (Leguminosae) ocorrentes em uma área de caatinga, Pernambuco, Brasil Pollen diversity of Mimosoideae taxa (Leguminosae) from a caatinga region, Pernambuco, Brazil

open access: yesActa Botânica Brasílica, 2010
O município de Mirandiba, Pernambuco, considerado prioritário para a conservação da caatinga, apresenta cerca de 25% das espécies de Leguminosae do bioma, sendo 23 espécies em 13 gêneros da subfamília Mimosoideae, das quais 6 espécies são endêmicas ...
Maria Teresa Buril   +2 more
doaj   +1 more source

Sensibilidade Espectral dos Índices de Vegetação: GNDVI, NDVI e EVI na Mata Ciliar do Reservatório de Serrinha II – PE, Brasil

open access: yesRevista Brasileira de Cartografia, 2021
Matas ciliares são florestas associadas a córregos, rios e lagos possuindo influência na proteção dos ecossistemas de ações antrópicas. O objetivo deste estudo foi identificar as alterações nas áreas de mata ciliar da Caatinga, a partir da sensibilidade ...
Ubiratan Joaquim da Silva Junior   +3 more
doaj   +1 more source

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