Spathodea campanulata (African tulip tree).

Author(s):  
Julissa Rojas-Sandoval ◽  
Pedro Acevedo-Rodríguez ◽  
Nick Pasiecznik

Abstract S. campanulata is a medium-size tree up to 35 m tall and 175 cm in diameter. It is indigenous to Africa where it extends along the west coast from Ghana to Angola and inland across the tropical rain forest region to southern Sudan and Uganda. It grows naturally in secondary forests in the high forest zone and in deciduous transition and savanna forests. In Uganda, it is one of the trees that colonizes grasslands. It grows well in areas with an even distribution of rainfall but will tolerate a dry season of up to six months. It grows on a wide variety of sites, from poorly to excessively drained, but prefers fertile, deep and well-drained loams.

2003 ◽  
Vol 19 (4) ◽  
pp. 387-395 ◽  
Author(s):  
Tomoya Iwata ◽  
Mikio Inoue ◽  
Shigeru Nakano ◽  
Hitoshi Miyasaka ◽  
Atsushi Doi ◽  
...  

Microhabitat use and habitat-abundance relationships of four freshwater shrimps, Atyopsis moluccensis, Macrobrachium pilimanus, Macrobrachium trompii and Macrobrachium neglectum, were surveyed in tropical streams running through primary and secondary forests in Borneo, East Malaysia. Underwater observations revealed that A. moluccensis preferred relatively high water velocity and a boulder substrate. Macrobrachium pilimanus also preferred high water velocity and a cobble substrate, whereas M. trompii occupied stream margins with slow current and fine substrates (from POM (particulate organic matter) to pebbles). In contrast, M. neglectum was distributed relatively evenly through the stream channel. The abundance of A. moluccensis, M. pilimanus and M. trompii in the stream reaches was best explained by the abundance of boulders, cobbles and POM, respectively, suggesting that the amount of preferred microhabitat is an important factor affecting shrimp abundances in the tropical rain-forest streams. The primary-forest reaches were dominated by coarse substrates, such as cobbles and boulders, while a great proportion of the streambeds in the secondary-forest reaches were covered with sand. Owing probably to such habitat differences, the abundance of both A. moluccensis and M. pilimanus, which preferred coarse substrates, was less in the secondary- than in the primary-forest reaches. These suggested that loss of preferred habitat, namely decreased coarse substrate availability, by sedimentation resulting from riparian deforestation had altered the shrimp assemblage structures.


2021 ◽  
Vol 4 (4) ◽  
pp. 474-480
Author(s):  
Suripto ◽  
Yayat Maulidan

The Rinjani Mount National Park (RMNP) area is one part of the tropical rain forest in the West Nusa Tenggara region. Orchid is one of the flora that has a high  bioprospective in this area. The spread of natural orchids can continue to grow and there are still many that have not been identified. This study aims to train specific techniques in collecting and identifying natural orchids at The Resort of Kembang Kuning, Rinjani Mount National Park. The collection of orchids was carried out using the roaming method, while the identification of orchid species was carried out using a species determination technique through observation of morphological and anatomical descriptions. The out comes of this study are an increase in participants' appreciation, knowledge and skills in collecting and identifying species of natural orchids in the Kembang Kuning area of Rinjani ​​Mount National Park. Based on the observations obtained 9 species (7 species were identified to the species level and 2 species were identified to the genus level) from 6 genera of natural orchids in area of The Kembang Kuning Resort, The Rinjani Mount National Park (RMNP).


Biotropica ◽  
2014 ◽  
Vol 46 (4) ◽  
pp. 378-386 ◽  
Author(s):  
Scott A. Parsons ◽  
Robert A. Congdon ◽  
Luke P. Shoo ◽  
Vanessa Valdez-Ramirez ◽  
Stephen E. Williams

Ecography ◽  
1994 ◽  
Vol 17 (3) ◽  
pp. 229-241 ◽  
Author(s):  
Alejandro Estrada ◽  
Rosamond Coates-Estrada ◽  
Dennis Meritt

2001 ◽  
Vol 56 (3) ◽  
pp. 383-389 ◽  
Author(s):  
Hermann Behling ◽  
Raquel R. B. Negrelle

AbstractPalynological analysis of a core from the Atlantic rain forest region in Brazil provides unprecedented insight into late Quaternary vegetational and climate dynamics within this southern tropical lowland. The 576-cm-long sediment core is from a former beach-ridge “valley,” located 3 km inland from the Atlantic Ocean. Radio-carbon dates suggest that sediment deposition began prior to 35,000 14C yr B.P. Between ca. 37,500 and ca. 27,500 14C yr B.P. and during the last glacial maximum (LGM; ca. 27,500 to ca. 14,500 14C yr B.P.), the coastal rain forest was replaced by grassland and patches of cold-adapted forest. Tropical trees, such as Alchornea, Moraceae/Urticaceae, and Arecaceae, were almost completely absent during the LGM. Furthermore, their distributions were shifted at least 750 km further north, suggesting a cooling between 3°C and 7°C and a strengthening of Antarctic cold fronts during full-glacial times. A depauperate tropical rain forest developed as part of a successional sequence after ca. 12,300 14C yr B.P. There is no evidence that Araucaria trees occurred in the Atlantic lowland during glacial times. The rain forest was disturbed by marine incursions during the early Holocene period until ca. 6100 14C yr B.P., as indicated by the presence of microforaminifera. A closed Atlantic rain forest then developed at the study site.


Sign in / Sign up

Export Citation Format

Share Document