scholarly journals Species diversity of primary tropical rain forest of south Yunnan of China with special reference to sampling area

1998 ◽  
Vol 06 (4) ◽  
pp. 241-247
Author(s):  
Hua Zhu ◽  
LI Bao-Gui ◽  
Zaifu Xu ◽  
WANG Hong ◽  
Keyword(s):  
Species Diversity ◽  
Special Reference ◽  
Rain Forest ◽  
Tropical Rain Forest ◽  
Sampling Area

THE EPIDEMIOLOGY OF EEE, WEE, SLE AND TURLOCK VIRUSES, WITH SPECIAL REFERENCE TO BIRDS, IN A TROPICAL RAIN FOREST NEAR BELEM, BRAZIL1

1966 ◽  
Vol 84 (3) ◽  
pp. 467-477 ◽  
Author(s):  
ROBERT E. SHOPE ◽  
AMELIA HOMOBONO PAES DE ANDRADE ◽  
GILBERTA BENSABATH ◽  
OTTIS R. CAUSEY ◽  
PHILIP S. HUMPHREY
Keyword(s):  
Special Reference ◽  
Rain Forest ◽  
Tropical Rain Forest

Observations on Simulium neavei Roubaud, with special reference to a focus of onchocerciasis in the Belgian Congo

1960 ◽  
Vol 51 (1) ◽  
pp. 9-15 ◽  
Author(s):  
S. G. Browne
Keyword(s):  
Special Reference ◽  
Rain Forest ◽  
Tropical Rain Forest ◽  
Onchocerca Volvulus ◽  
Adult Females ◽  
Small Streams ◽  
Belgian Congo

Parts of a district situated in the tropical rain-forest of the Belgian Congo in which onchocerciasis was generally endemic, were investigated to identify the vector and to ascertain its phoretic host, breeding places, habits, etc.The vector found biting human bait (usually less than 1 metre from the ground) was Simulium neavei Eoub. Dissection of adult females revealed developmental forms of Onchocerca volvulus.Larvae and pupae were found on crabs of the genus Potamon in fast-flowing stretches of the numerous small streams flowing into the Eiver Congo. The infested streams in the main focus of onchocerciasis were treated by DDT emulsion at a concentration of one part per 500,000 for 30 minutes, every ten days for ten applications.The good results observed initially were partly offset by the reappearance six months later of small numbers of Simuliids apparently developing from eggs laid by females entering the disinfested area from without.

scholarly journals Impacts of recent dry weather on a tropical rain forest in Sumatra with special reference to stand dynamics during the last two decades

Tropics ◽  
2006 ◽  
Vol 15 (2) ◽  
pp. 177-187 ◽  
Author(s):  
Tsuyoshi YONEDA ◽  
Hiromi MIZUNAGA ◽  
Sen NISHIMURA ◽  
Shinji FUJII ◽  
Erizal MUKHTAR ◽  
...  
Keyword(s):  
Special Reference ◽  
Rain Forest ◽  
Tropical Rain Forest ◽  
Stand Dynamics

Soil environment and tree species diversity in tropical rain forest, West Sumatra, Indonesia

1998 ◽  
pp. 159-167 ◽  
Author(s):  
Daisuke Kubota ◽  
Tsugiyuki Masunaga ◽  
Hermansah ◽  
Azwar Rasyidin ◽  
Mitsuru Hotta ◽  
...  
Keyword(s):  
Species Diversity ◽  
Tree Species ◽  
Rain Forest ◽  
Tropical Rain Forest ◽  
Tree Species Diversity ◽  
Soil Environment ◽  
West Sumatra

scholarly journals Regeneración natural y diversidad de especies arbóreas en selvas húmedas

2017 ◽  
pp. 179 ◽  
Author(s):  
Miguel Martínez-Ramos
Keyword(s):  
Species Diversity ◽  
Tree Species ◽  
Rain Forest ◽  
Tropical Rain Forest ◽  
Forest Canopy ◽  
Tree Species Diversity ◽  
Tropical Rain Forests ◽  
Advanced Regeneration ◽  
Trade Offs ◽  
Tree Falls

One of the major biological mysteries still to be explained is the maintenance of the enormous local tree species diversity in tropical rain forests .This review explores the relationship between the dynamics of natural regeneration and the evolutionary and ecological processes and mechanisms involved in the origin and maintenance of such extraordinary diversity. First, 1 review ideas on the origin of tree species diversity in the tropics. This review suggests that: i) historical, evolutionary and biogeographical phenomena have a paramount influence on local species richness, and ii) tropical rain forest tree communities are species unsaturated, suggesting that newly originated species may freely migrate across a regional landscape. Second, I describe the forest regeneration process. Gap dynamics, promoted by branch and tree falls, is a fundamental component of the forest canopy renewal. Small gaps (caused by branch falls) facilitate the establishment and survival of seedlings and saplings in the shaded understory (advanced regeneration), whereas large gaps (caused by tree falls) enable trees to reach mature sizes. Gap creation and tree maturation are the extremes of a process of tree and species replacement in the forest canopy. Third, I explore relationships between the tree replacement process and the population and community mechanisms that facilitate maintenance of species diversity at a local scale of a few hectares. I argue and document that factors that promote high species diversity in the advanced regeneration favor high probabilities of heterospecific replacements among canopy trees. Hence, these factors facilitate the maintenance of species diversity in the forest canopy. Frugivores, by promoting diversity in the seed rain community, and biotic agents of seed, seedling and sapling mortality by operating mainly on abundant species, are key factors in facilitating diversity. Furthermore, the existence of trade offs in tree life history attributes (such as seed dispersal capacity, survivorship in the shade and growth under gap conditions) contributes to diversity maintenance by promoting heterospecific replacements. This review does not support ú1e idea that maintenance of tree species diversity in tropical rain forest depends on random processes, as some authors have claimed. instead, I conclude that ecological phenomena have a paran1ounl role on the possibility that a species gains a membresy in such highly diverse forests.

scholarly journals Soil Quality Characterization in Relation to Tree Species Diversity in Tropical Rain Forest, West Sumatra, Indonesia I. Comparison of two 1-ha plots.

Tropics ◽  
2000 ◽  
Vol 9 (2) ◽  
pp. 133-145 ◽  
Author(s):  
Daisuke KUBOTA ◽  
Tsugiyuki MASUNAGA ◽  
HERMANSAH ◽  
Mitsuru HOTTA ◽  
Toshiyuki WAKATSUKI
Keyword(s):  
Species Diversity ◽  
Soil Quality ◽  
Tree Species ◽  
Rain Forest ◽  
Tropical Rain Forest ◽  
Tree Species Diversity ◽  
West Sumatra
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