scholarly journals Characteristics of soil and hillslope responses in humid tropical forests in Sumatra, Indonesia

2021 ◽  
Vol 15 (2) ◽  
pp. 23-30
Author(s):  
Takahiro Sayama ◽  
Ryoko Araki ◽  
Kodai Yamamoto ◽  
Apip
Keyword(s):  
Tropical Forests

Tropical Forests

1921 ◽  
Vol 3 (3supp) ◽  
pp. 267-270
Author(s):  
Vernon Kellogg ◽  
R. M. Yerkes ◽  
H. E. Howe
Keyword(s):  
Tropical Forests

Valuing Tropical Forests

1995 ◽  
Author(s):  
Randall A. Kramer ◽  
narendra Sharma ◽  
Mohan Munasinghe
Keyword(s):  
Tropical Forests

FRUGIVORIA E DISPERSÃO DE SEMENTES POR PEIXES

2008 ◽  
Vol 1 (1) ◽  
pp. 7-18
Author(s):  
Luciane Lopes de Souza
Keyword(s):  
Sustainable Development ◽  
Seed Dispersal ◽  
Tropical Forests ◽  
Natural Regeneration ◽  
Main Species ◽  
Fishing Gears ◽  
Solimões River

Biotic or abiotic processes of seed dispersal are important for the maintenance of the diversity, and for the natural regeneration in tropical forests. Ichthyochory is one of the fundamental mechanisms for seed dispersal in flooded environments, as the “igapó” forests. A study on the ichthyochory of the igapós was conducted at Amanã Sustainable Development Reserve, in the middle Solimões river, from June 2002 to September 2004. Monthly samples of frugivorous fish were taken, with the main fishing gears used locally. Guts of 1,688 fish caught were examined. The main species were Myloplus rubripinnis (29.21%), Hemiodus immaculatus (18.96%),Colossoma macropom um (16.23%) and Mylossoma duriventre (16.05%). The diet was made of vegetables (fruits, leave and flowers), and animals (arthropods). 53.02% of all fish caught ingested fruits. The total number of intact seeds in the stomachs and intestines were 8,069 and 5,763 respectively. About 61.9% of the Brycon melanopterus (matrinchão), 46.34% of the Brycon amazonicus (mamuri) and 30.22% of M . rubripinnis (parum ) analysed had intact seeds in their guts. Seeds of Nectandra amazonum and Genipa spruceana ingested proved to be more viable than those non-ingested by fish. The high rates of frugivory, the presence of intact seeds in the guts of fish and the greater viability of ingested seeds all suggest that these animals are important seed dispersors in the “igapó” forests of Amanã Reserve.

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