Results 21 to 30 of about 1,499 (158)

Antioxidant and antiangiogenic activity ofAstronium graveolensJacq. leaves

open access: yesNatural Product Research, 2014
Angiogenesis is involved in many physiological and pathological conditions. Natural compounds with antioxidant activity have also been reported to possess potent antiangiogenic properties by regulating angiogenesis modulators such as vascular endothelial growth factor (VEGF).
Hernández, Vanessa   +5 more
openaire   +2 more sources

Genetic diversity of Astronium graveolens Jacq. in Colombian seasonally dry tropical forest: support for the dry forest refugia hypothesis?

open access: yesPerspectives in Plant Ecology, Evolution and Systematics, 2021
ABSTRACT Seasonally Dry Tropical Forest (SDTF) is one of the most threatened ecosystems worldwide and in Colombia it is considered critically endangered according to the national red list of ecosystems. Ongoing processes of fragmentation and degradation of SDTFs are expected to be accompanied by a loss of genetic diversity of the tree populations ...
Evert Thomas   +6 more
openaire   +2 more sources

FITOSSOCIOLOGIA DE DOIS FRAGMENTOS DE FLORESTA ESTACIONAL SEMIDECIDUAL NO PONTAL DO PARANAPANEMA, SP

open access: yesRevista do Instituto Florestal, 2002
Para efetuar o levantamento fitossociológico do componente arbóreo da floresta em fragmentos remanescentes no Pontal do Paranapanema, adotou-se um método alternativo, na tentativa de reunir os aspectos positivos e eliminar os aspectos negativos de dois ...
Giselda Durigan   +2 more
doaj   +1 more source

Ethnopharmacology of Anacardiaceae R. Br. from Northeast Brazil [PDF]

open access: yes, 2023
Species of the Anacardiaceae are commonly used in traditional Brazilian medicine, thus, the aim of this review was to research the species of Anacardiaceae and their respective ethnopharmacological uses in Northeast Brazil.
da Silva, Paulo Henrique   +5 more
core   +2 more sources

Slope variation and population structure of tree species from different ecological groups in South Brazil

open access: yesAnais da Academia Brasileira de Ciências, 2010
Size structure and spatial arrangement of 13 abundant tree species were determined in a riparian forest fragment inParaná State, South Brazil (23"16'S and 51"01'W). The studied species were Aspidosperma polyneuron Müll.
Edmilson Bianchini   +3 more
doaj   +1 more source

Chlorophyll fluorescence of tropical tree species in a semi-deciduous forest gap Fluorescência da clorofila de espécies arbóreas tropicais em uma clareira de floresta semidecídua

open access: yesRevista Árvore, 2004
The characterization of different ecological groups in a forest formation/succession is unclear. To better define the different successional classes, we have to consider ecophysiological aspects, such as the capacity to use or dissipate the light energy ...
Rafael Vasconcelos Ribeiro   +4 more
doaj   +1 more source

On the Significance of Leaf Sides in Automatic Leaf-based Plant Species Identification [PDF]

open access: yes, 2016
Because the front side of a leaf and the underside are functionally very different – the former captures sunlight to produce photosynthesis and the latter absorbs carbon dioxide and releases oxygen and vapor – they typically have different visual ...
Carranza-Rojas, José   +1 more
core   +1 more source

La vegetación de Calakmul, Campeche, México: clasificación, descripción y distribución

open access: yesBotan‪ical Sciences, 2002
La región de Calakmul, en el centro de la península de Yucatán, es de gran importancia por contener el área forestal más extensa del trópico mexicano. El objetivo de este trabajo es presentar la clasificación, descripción y distribución espacial de las ...
Esteban Martínez, Carlos Galindo-Leal
doaj   +1 more source

Evaluaci?n de la composici?n flor?stica, la estructura y la diversidad de tres bosques secos tropicales en el alto Magdalena, departamento del Tolima [PDF]

open access: yes, 2018
80 p. Recurso Electr?nicoSe evalu? la composici?n flor?stica y estructural de tres bosques secos tropicales en el alto Magdalena, ubicados en el sur-oriente (bosque La Flor), centro (bosque El Neme) y norte (bosque la Zorra) del departamento del Tolima ...
Fonseca Pe?a, Lina Mar?a   +1 more
core  

Efficiency of small mammal trapping in an Atlantic Forest fragmented landscape: the effect of trap type and posiiton, seasonality and habitat. [PDF]

open access: yes, 2014
201
CAMPELLO, E. F. C.   +5 more
core   +1 more source

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