Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"sub-tropics"”.
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Adaptation to the host-plant, and the evolution of host specialization, in 'cycad weevils' (Coleoptera: Brentidae)
… by 11 genera with relict distributions in the tropics and sub-tropics. The primary aim of this research was to determine the possible causes of narrow host specialization in Antliarhinus zamiae (Thunberg) and A. signatus Gyllenhal, two species which develop exclusively on the ovules of their …
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Taxonomia e anatomia de cinco espécies do gênero Maytenus (Celastroideae - Celastraceae) ocorrentes no Brasil
… around 200 species distribute throughout the tropics and sub-tropics of the Old and New World. In Brazil, the genus is represented by approximately 80 species. Maytenus is a polyphyletic genus and additional research is required to better understand its taxonomy. Maytenus ardisiaefolia Reiss., …
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The reproductive biology of two small southern African mammals, the spiny mouse, Acomys spinosissimus (Rodentia: Muridae) and the Eastern rock elephant-shrew, Elephantulus myurus (Macroscelidea: Macroscelididae)
… for growth and survival of the young. In the tropics and sub-tropics, seasonal rainfall appears to be the main reason for seasonal breeding. In order to maximize fitness, it is important for an animal to be able to anticipate these seasonal changes and to trigger reproductive events at the …
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Keanekaragaman tumbuhan mangrove di Pantai Selatan Kabupaten Sampang Madura
… di tempat yang terlindung daerah tropis dan sub tropis. Dengan demikian maka tumbuhan mangrove merupakan ekosistem yang terdapat di antara daratan dan lautan dan pada kondisi yang sesuai mangrove akan membentuk hutan yang ekstensif dan produktif. Tujuan dari penelitian ini adalah untuk …
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The mathematical modeling and analysis of nonlocal ecological invasions and savanna population dynamics
… trees and grass in seasonally dry areas of the tropics and sub-tropics, but there is no consensus as to why savanna occurs as a stable state between tropical grassland and forest. To understand the dynamics behind the tree-grass relationship, we begin by reviewing and analyzing approaches in …
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Phytoplankton community structure and cyanobacterial blooms in reservoirs in the semi-arid highlands of Tigray, Ethiopia
… a field survey of a set of 32 shallow semi-arid sub-tropical reservoirs in the highlands of Tigray, Ethiopia. This survey was carried out in both the wet and dry season to capture seasonal variations of phytoplankton communities and associated environmental variables. We assessed seasonal …
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On the structure and dynamics of the Asian monsoon anticyclone
The Asian summer monsoon circulation has been the subject of continuous research for several decades. Much emphasis has been given to the lower level cyclone, but while various models and mechanisms have been proposed to explain certain features of the upper level anticyclone, like the zonal scale …