Skip to page content
USDA Forest Service
  
Treesearch

Research & Development Treesearch

 
Treesearch Home
About Treesearch
Contact Us
Research & Development
Forest Products Lab
International Institute of Tropical Forestry
Northern
Pacific Northwest
Pacific Southwest
Rocky Mountain
Southern Research Station
Help
 

Science.gov - We Participate


USA.gov  Government Made Easy


Global Forest Information Service

US Forest Service
P.O. Box 96090
Washington, D.C.
20090-6090

(202) 205-8333

You are here: Home / Search / Publication Information
Bookmark and Share

Publication Information

View PDF (1.0 MB byte)

Title: Phenological observations and tree seed characteristics in an equatorial moist forest at Trombetas, Pará State, Brazil

Author: Knowles, Oliver H.; Parrotta, John A.;

Date: 1997

Source: Progress in Biometeorology, vol. 12: Phenology in Seasonal Climates I (Book)

Publication Series: Book Chapter

Description: Seasonal patterns of flowering and fruiting were studìed over an 18-vear period in an upland (terra firme) primary forest area near Trombetas, Pará ìn centrai Amazonìa. The study included 160 common tree taxa. While a number of specìes produced flowers and fruits during all months, distinct seasonal patterns were observed. Flowerìng peaks usually occurred during the early months of the dry season (July-October). Fluctuatìons in the proportion of fruìting species closely followed seasonal raìnfall trends for zoochoric taxa, while fruiting in the less abundant (50 of 160 species) anemochorìc taxa generally peaked durìng the dry season (August-December). Signìfìcant year-to-year variations in phenological behavior were observed for many specìes. Phenomena such as synchronozed (mass) flowering, relay flowering and monocarpic behavìor, as well as observatìons on leaf phenology, are discussed. A calendar of flowering and fruìting perìods, and data on seed morphology and dispersal vectors are presented for 230 taxa of prìmary and secondary forest trees and shrubs of the region.

Keywords: Tropical forest, Amazon, Brazil, terra firme, tree phenology, flowering, fruiting, seed characteristics, long-term studies

Publication Notes:

  • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
  • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

XML: View XML

Citation:


Knowles, Oliver H.; Parrotta, John A. 1997. Phenological observations and tree seed characteristics in an equatorial moist forest at Trombetas, Pará State, Brazil. In: Lieth, Helmut and Schwartz, M.D. (eds.) Progress in Biometeorology, vol. 12: Phenology in Seasonal Climates I. Backhuys Publishers, Leiden, the Netherlands. pp. 67-84.

 


 [ Get Acrobat ]  Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility

USDA logo which links to the department's national site. Forest Service logo which links to the agency's national site.