نتایج جستجو برای: selva
تعداد نتایج: 928 فیلتر نتایج به سال:
fragaria ananasa l. یکی از اعضای خانواده rosacae است که مشهور به داشتن ترکیبات فنلی بالاست. این ترکیبات بخاطر دارا بودن تاثیرات پاداکسایشی و ضدرادیکالی شناخته شده هستند. تحقیق حاضر مطالعه ی برخی صفات مورفولوژیکی-آناتومیکی برگ و دمبرگ و فعالیت پاداکسایشی ترکیبات فنلی میوه ی دو رقم گیاه توت فرنگی (diamante و selva) با استفاده از سه حلال آب مقطر، اتانول و متانول می باشد. نمونه های مورد مطالعه از م...
[1] In this paper we present the results of an experiment to measure forest structure and biomass dynamics over the tropical forests of La Selva Biological Station in Costa Rica using a medium resolution lidar. Our main objective was to observe changes in forest canopy height, related height metrics, and biomass, and from these map sources and sinks of carbon across the landscape. The Laser Veg...
Collections from Panamá and the recent Arthropods of La Selva biodiversity inventory project in Costa Rica yielded specimens of two unusual species of the genus Callimicra Deyrolle, both of which exhibit striking color patterns. A brief review of the history of treatment of the genus is presented and the two new species are described and illustrated: Callimicra timmonsae sp.n. species, and C. p...
Laura Selva, Christoph Berger, Juan Jose Garcia-Garcia, Hector de Paz, David Nadal, Carmen Muñoz-Almagro Department of Molecular Microbiology, University Hospital Sant Joan de Déu, Barcelona, Spain; Division of Infectious Diseases and Hospital Epidemiology, University Children’s Hospital of Zürich, Zurich, Switzerland; Department of Pediatrics, University Hospital Sant Joan de Déu, Barcelona, S...
While a clear consensus is emerging that predators can play a major role in shaping terrestrial communities, basic natural history observations and simple quantifications of predation rates in complex terrestrial systems are lacking. The potential indirect effect of a large predatory ant, Paraponera clavata Fabricius (Formicidae: Ponerinae), on herbivores was determined on rainforest trees at L...
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