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
Help
 

GeoTreesearch


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

(602 KB)

Title: El bosque del parque central de la urbanización El Paraíso: estructura, composición de especies y crecimiento de árboles

Author: Román Nunci, E.; Marcano Vega, H.; Vicéns, I.; Bortolamedi, G.; Lugo, A.E.

Date: 2005

Source: Acta Cientifica. 19(1-3):73-81.

Publication Series: Scientific Journal (JRNL)

Description: We studied an urban forest established in 1988 by residents of the El Paraíso urbanization. In 2007 the forest had 37 forest species (9 native and 28 introduced) with diameter at breast height (dbh) ≥ 4 cm in a 1.0785 ha area. The most common species was the hybrid mahogany (Swietenia macrophylla x mahagony) with an Importance Value of 24.3 percent. The forest had two species endemic to Puerto Rico (maga or Thespesia grandiflora and the royal palm or Roystonea borinquena) as well as native primary forest species such as bulletwood or ausubo (Manilkara bidentata) and lignum vitae or guayacán (Guaiacum officinale) and native pioneer species such as pumpwood or female yagrumo (Cecropia schreberiana), among others. Pumpwood was the only species that propagated naturally after an adult tree planted by residents flowered. The forest’s basal area was 17.3 m2/ha and the tree density was 127/ha. Because many of the trees were multi-stemed density was 215/ha. The forest was distinguished by an absence of natural understory, little accumulation of litterfall, trees with mean dbh and height of 26.8 m and 9.8 m respectively, and rapid growth in the majority of the trees. Approximately half of the trees did not grow or grew very slowly with the remainder growing at rates greater than 20 cm2/year, including 15 percent that grew at rates greater than 100 cm2/year. Annual tree mortality was 1.4 to 1.5 percent. This forest’s trees have grown at elevated rates and have developed a high and closed canopy in spite of the intensive use that the area receives. However, human activity impedes forest regeneration, which suggests that its regeneration and species composition are dependent upon the planting and care of the trees by the residents.

Keywords: urban forests, Swietenia macrophylla x mahagony, Manilkara bidentata, Roystonea borinquena, Guaiacum officinale, Cecropia schreberiana, anthropogenic disturbance

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:


Román Nunci, E.; Marcano Vega, H.; Vicéns, I.; Bortolamedi, G.; Lugo, A.E. 2005. El bosque del parque central de la urbanización El Paraíso: estructura, composición de especies y crecimiento de árboles. Acta Cientifica. 19(1-3):73-81.

 


 [ 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.