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Mostrando ítems 11-20 de 173
Efeitos cascata da caça na comunidade de vertebrados e plantas em florestas da Amazônia Ocidental
(Universidade Federal do Rio Grande do NorteBrasilUFRNPROGRAMA DE PÓS-GRADUAÇÃO EM ECOLOGIA, 2020-07-30)
Overhunting is one of the greatest threats to wildlife worldwide and has caused a sharp
decline in the abundance of large-bodied vertebrate populations in tropical forests. The
implications are far-reaching since the ...
Direct determination of chromium in empty medicine capsules by tungsten coil atomic emission spectrometry
(Royal Soc Chemistry, 2015-01-01)
Tungsten coil atomic emission spectrometry (WCAES) is used to determine trace levels of Cr in medicine capsules. No sample preparation other than 10 min vortex mixing with HNO3 and H2O2 is required. Matrix decomposition ...
A Forest Road, Trinidad
(2009-11-09)
Description at back of postcard: "Palms are very abundant in some of the Trinidad forests and the main motor roads often traverse long stretches of luxuriant thoroughly tropical scenery." Postcard shows a mass of feathery ...
Direct determination of chromium in empty medicine capsules by tungsten coil atomic emission spectrometry
(Royal Soc Chemistry, 2015)
Land-use changes lead to functional loss of terrestrial mammals in a Neotropical rainforest
(2021-04-01)
Land-use changes are a main driver of modifications in tropical ecosystems, leading to the loss of species and ecological traits and affecting key ecological functions. Although much attention has been given to predict the ...
Flowering and seeding patterns in pure and mixed Nothofagus forests in Southern Patagonia
(Springer Verlag Berlín, 2016-12)
Introduction: Variation in reproductive phenology among species is an important mechanism for maintaining species coexistence. In mixed forests, the impact of limiting (biotic and abiotic) factors on tree reproductive ...
Flowering and seeding patterns in primary, secondary and silvopastoral managed Nothofagus antarctica forests in South Patagonia
(Taylor & Francis, 2010-04)
The success of the reproductive process in trees depends on abiotic and biotic factors that determine the final outcome of natural regeneration. Silviculture alters biotic and abiotic factors and results in secondary forest ...
Technical-economic analysis of grapple saw: A stochastic approach
(2020-01-01)
The processing of Eucalyptus logs is a stage that follows the full tree system in mechanized forest harvesting, commonly performed by grapple saw. Therefore, this activity presents some as-sociated uncertainties, especially ...