BEGINNING OF ANCIENT CIVILIZATION IN MESO-AMERICAN TROPICAL FOREST
نویسندگان
چکیده
منابع مشابه
Bio-indicators in the tropical forest of Western Ghats environment
Background: Investigation on the natural radionuclides 238U, 232Th, 40K and natural fallout radionuclide 210Po in the prominent plants species of Western Ghats tropical forest near Kotagiri have been carried out as a part of baseline background radiation studies in the forest environment. Materials and Methods: The prominent plants species of the region Evodia roxburghiana and Eleaoca...
متن کاملBio-indicators in the tropical forest of western Ghats environment
Introduction: Investigation on the natural radionuclides 238U, 232Th, 40K and natural fallout radionuclide 210Po in the prominent plants species of Western Ghats tropical forest near Kotagiri have been carried out as a part of baseline background radiation studies in the forest environment. Materials and Methods: The prominent plants species of the region Evodia roxburghiana and Eleaocarpus obl...
متن کاملMagnetism and Archaeology: Magnetic Oxides in the First American Civilization
Archaeological excavations at sites of the Olmec civilization (1500 to 500 B.C. in present-day Mexico) have unearthed artifacts formed from massive iron oxide ores. Iron oxide ores were ground and shaped into highly polished circular artifacts, called "mirrors", with flat and concave surfaces. These mirrors were employed as body adornments by societal elites and were involved in trade and commo...
متن کاملEffects of litter manipulation on early-stage decomposition and meso-arthropod abundance in a tropical moist forest
Differences in forest productivity due to climate change may result in permanently altered levels of litterfall and litter on the forest floor. Using experimental litter removal and litter addition treatments, we investigated the effects of increased and decreased litterfall on early-stage litter decomposition and the abundance of meso-arthropods in a moist tropical forest. Litterbags containin...
متن کاملSustaining biodiversity in ancient tropical countryside.
With intensifying demands for food and biofuels, a critical threat to biodiversity is agricultural expansion into native tropical ecosystems. Tropical agriculture, particularly intensive agriculture, often supports few native organisms, and consequently has been largely overlooked in conservation planning; yet, recent work in the Neotropics demonstrates that tropical agriculture with certain fe...
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ژورنال
عنوان ژورنال: Geographical Review of Japan
سال: 1958
ISSN: 2185-1719,0016-7444
DOI: 10.4157/grj.31.333