Indice de Artículos Digitales |
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CAAPPR educa sobre nuevos códigos de construcción
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El caballero cristiano en el romancero Soto de Mejias, Venus Lidia
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Los caciques Jumacao, Juan e Isabel Cayagua de Humacao : gestores de libertad y tiempos nuevos / Osiris Delgado Mercado
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The Cactus Stenocereus griseus (Haworth), 1812 : an interesting case from the point of view of seed dispersion syndromesStenocereus griseus is a columnar cactus occurring in the Caribbean Basin. The species is interesting from the point of view of seed dispersion syndromes because its pulp may exhibit two colors within the same population: blood red and greenish white, corresponding to ornithochory (seed dispersion by birds) and chiropterochory syndromes (seed dispersion by bats) respectively. In both fruit types, the content of water, glucose, fructose, sucrose, non-structural carbohydrates, proteins, and lipids was quantified and compared to adaptations of seed dispersers. No statistical differences were found between red and white fruits for the studied characteristics. Fruit pulp of S. griseus can be considered as extremely “energy-diluted,” with the content of hexoses exceeding that of sucrose, accordingly to ornithochory syndrome. Our results and the available ecological data on fruit consumption in S. griseus do not support the general notion that selection by fruit-eating animals has lead to the evolution of the classical fruit syndromes. We hypothesize that these fruits are like a “sport beverage” especially for animals with an elevated metabolism-rate on extreme habitats, e. g. xeric.
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Cada guaraguao... (reseña) : galeria de oficiales norteamericanos en Puerto Rico (1898-1899) Johannes Maerk
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Cafetal adentro. Introducción : una historia de los trabajadores agrícolas en el Puerto Rico del siglo 19
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Cafetales de escritorio : las interpretaciones académicas sobre la sociedad del cafe en Puerto Rico / Mabel M. Rodríguez Centeno
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Calendario 2014 : Aibonito, los barrios de mi pueblo / BoniCoop. Aibonito, P.R. : BoniCoop-Cooperativa de Ahorro y Crédito Aiboniteña, 2014.
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Calendario 2017 : la influencia de Ramón Frade en el arte y en la arquitectura urbana / Gobierno Municipal de Cayey
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Calendario 2019 : Dibujos [de] estudiantes de escuelas de Caguas. -- Caguas, P.R. : Municipio Autónomo de Caguas, 2019.
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