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Abstract Detail


Ecological Section

Barrios Roque, Beyte  [1], Arellano, Gabriel [2], Koptur, Suzanne [3].

Fire, flowering, and fragmentation: The effect of seasonal fires on the occurrence of pineland golden trumpet ( Angadenia berteroi ), a rare species of the southern Florida pine rocklands.

The pine rocklands of south Florida are a fire-dependent ecosystem associated with outcroppings of limestone. The largest outcrop is the Miami Ridge formed by several fragments from Miami to Homestead and Long Pine Key in Everglades National Park. Pine rockland plants have several adaptations to fire. Burns improve plant growth, flowering, seed germination, and seedling establishment. Habitat fragmentation and destruction of the natural environment may have a negative effect on the biology of plants. Little is known about the biology of Angadenia berteroi , a threatened endemic species of the south Florida pineland. We selected 6 study sites in the pine rockland forest scattered along the Miami Rock Ridge, including fire managements units within Everglades National Park, where A. berteroi is present. We estimated the density of adults, using adaptive cluster sampling. We measured litter depth and canopy closure as physical indicators of time since the last fire. Fragmentation, lack of fire, as well as greater impact of exotic species, negatively affect the abundance of this native plant. Data on this beautiful and threatened species may provide impetus to not only conserve, but to properly manage, remaining pine rockland in South Florida.


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1 - Florida International University, Biological Sciences, 11200 SW 8th St., Miami, Fl, 33199 , U.S.A
2 - Real Jardín Botánico, Consejo Superior de Investigaciones Científicas,, Plaza de Murillo 2,, Madrid, 28049 , Spain
3 - Florida International University, Deparment of Biological Sciences, 11200 SW 8th St., Miami, Florida, 33199, USA

Keywords:
pine rocklands
fire
Habitat fragmentation.

Presentation Type: Poster:Posters for BSA Sections
Session: P1
Location: Event Tent/Cliff Lodge
Date: Monday, July 27th, 2009
Time: 5:30 PM
Number: P1EC005
Abstract ID:125


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