منابع مشابه
Why are there so many species in the tropics?
Known for centuries, the geographical pattern of increasing biodiversity from the poles to the equator is one of the most pervasive features of life on Earth. A longstanding goal of biogeographers has been to understand the primary factors that generate and maintain high diversity in the tropics. Many 'historical' and 'ecological' hypotheses have been proposed and debated, but there is still li...
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The question as to why primates have evolved unusually large brains has received much attention, with many alternative proposals all supported by evidence. We review the main hypotheses, the assumptions they make and the evidence for and against them. Taking as our starting point the fact that every hypothesis has sound empirical evidence to support it, we argue that the hypotheses are best int...
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We demonstrate the existence of three off-shell distinct N = 4 super-strings at the level of manifest locally supersymmetric Lagrangian field theories on the world sheet.
متن کاملResponse to Comment on “Why Are There So Many Species of Herbivorous Insects in Tropical Rainforests?”
Norton and Didham (1) argue that differences in plant abundance between tropical and temperate forests may limit the general conclusion that herbivore diversity scales directly with host plant diversity. They point out that our study (2) did not include locally rare tree species. Our temperate/tropical comparison was standardized for sample size and plant phylogeny but not for plant abundance a...
متن کاملWhy are there so many species of herbivorous insects in tropical rainforests?
Despite recent progress in understanding mechanisms of tree species coexistence in tropical forests, a simple explanation for the even more extensive diversity of insects feeding on these plants has been missing. We compared folivorous insects from temperate and tropical trees to test the hypothesis that herbivore species coexistence in more diverse communities could reflect narrow host specifi...
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ژورنال
عنوان ژورنال: Lankesteriana
سال: 2016
ISSN: 2215-2067,1409-3871
DOI: 10.15517/lank.v3i2.23028