نتایج جستجو برای: tropical zones

تعداد نتایج: 112974  

2016
Filipe França Jos Barlow Bárbara Araújo Julio Louzada

The increased global demand for tropical timber has driven vast expanses of tropical forests to be selectively logged worldwide. While logging impacts on wildlife are predicted to change species distribution and abundance, the underlying physiological responses are poorly understood. Although there is a growing consensus that selective logging impacts on natural populations start with individua...

2001
Jeffrey D. Sachs

Most recent cross-country analyses of economic growth have neglected physical geography as a determinant of economic growth. This paper reviews the distinctive development challenges faced by economies situated in tropical climates. Using geographic information system (GIS) mapping, the paper presents evidence that production technology in the tropics has lagged behind temperate zone technology...

2017
Sandra Brown Ariel E. Lugo

We review the literature that led to clarifying the role of tropical forests in the global carbon cycle from a time when they were considered sources of atmospheric carbon to the time when they were found to be atmospheric carbon sinks. This literature originates from work conducted by US Forest Service scientists in Puerto Rico and their collaborators. It involves the classification of forests...

Journal: :Phytopathology 2009
Annett Milling Fanhong Meng Timothy P Denny Caitilyn Allen

Most strains of the bacterial wilt pathogen Ralstonia solanacearum are tropical, but race 3 biovar 2 (R3bv2) strains can attack plants in temperate zones and tropical highlands. The basis of this distinctive ecological trait is not understood. We compared the survival of tropical, R3bv2, and warm-temperate North American strains of R. solanacearum under different conditions. In water at 4 degre...

2014
Jun Wang Xiaoli Tong Donghui Wu

To understand the global distribution patterns of litter-dwelling thrips, a total 150 leaf litter samples were collected from 6 natural reserves located in three climatic regions, temperate, subtropical and tropical. The results showed the relative abundance of Thysanoptera was over 3.0% in 4 natural reserves from subtropical and tropical zone, and reached 5.9% in one tropical reserve, only les...

Journal: :Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 2009

Journal: :Pakistan Journal of Scientific & Industrial Research Series A: Physical Sciences 2014

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