منابع مشابه
Ediacaran biota from Sonora, Mexico.
The Ediacaran biota is the earliest diverse community of macroscopic animals and protoctists. Body and trace fossils in the Clemente Formation of northwestern Sonora extend downward the geologic range of Ediacaran forms. Taxa present in the Clemente Formation include cf. Cyclomedusa plana, Sekwia sp., an erniettid (bearing an air mattress-like "pneu" body construction), and the trace fossils Lo...
متن کاملSt. Louis encephalomyelitis in Hermosillo, Sonora, Mexico.
This report, which describes an epidemic of St. Louis encephalitis in northwestern Mexico, was prompted by the apparent infrequency of previous Mexican outbreaks of this disease. The site of the epidemic was the Municipality of Hermosillo in the State of Sonora. This municipality, with a population of about 273,000, is situated in a hot flat area which is naturally dry but which is also well-ir...
متن کاملGeographical ecology of the palms (Arecaceae): determinants of diversity and distributions across spatial scales.
BACKGROUND The palm family occurs in all tropical and sub-tropical regions of the world. Palms are of high ecological and economical importance, and display complex spatial patterns of species distributions and diversity. SCOPE This review summarizes empirical evidence for factors that determine palm species distributions, community composition and species richness such as the abiotic environ...
متن کاملConvergent Evolution towards High Net Carbon Gain Efficiency Contributes to the Shade Tolerance of Palms (Arecaceae)
Most palm species occur in the shaded lower strata of tropical rain forests, but how their traits relate to shade adaptation is poorly understood. We hypothesized that palms are adapted to the shade of their native habitats by convergent evolution towards high net carbon gain efficiency (CGEn), which is given by the maximum photosynthetic rate to dark respiration rate ratio. Leaf mass per area,...
متن کاملEffect of Halophyte Salicornia bigelovii (Torr.) as Animal Supplement in Goat in Sonora Desert, Mexico
In the northwest of Mexico, a desert zone, new alternatives are required to satisfy the needs of food in goats; evidence indicate that feeding with Salicornia bigelovii forage, could be a contribution to goat obtaining system. Regarding to this halophyte, the information related to its use as a forage supplement in Sonora desert is very limited, specifically in goats. The goal of this ...
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ژورنال
عنوان ژورنال: Aliso
سال: 1999
ISSN: 2327-2929
DOI: 10.5642/aliso.19991801.11