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Abstract Detail


Tropical and Subtropical Lichens: Diversity and Floristics

Rosentreter, Roger [1], DeBolt, Ann [2].

Studies on the federally endangered Florida endemic, Cladonia perforata.

Cladonia perforata A. Evans, described in 1952, was first collected on Santa Rosa Island in northwest Florida by George Llano. This lichen is restricted to the highest, xeric, white-sand ridges in rosemary scrub habitat in Florida. In 1993, C. perforata was listed as endangered because of the significant loss of scrub habitat in Florida. Less than 15 percent of the historic distribution of scrub habitat persists and land conversion to citrus and residential development continues to diminish scrub habitat almost daily. This species is known to occur on approximately 30 sites in Florida; all but two sites are in the South Florida Ecosystem. Cladonia perforata is suspected of reproducing only by vegetative fragmentation; it has no spore-producing organs. Therefore, transplant experiments were conducted from areas with extensive 2004 hurricane windfall where C. perforata has managed to persist, but which are vulnerable to proposed burn treatments. Translocated thalli were tethered on nylon fishing line in areas where prescribed burning is not proposed for at least 15 years. They are currently being monitored on a monthly basis.


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1 - USDI Bureau of Land Management, Boise, Idaho, 83709, USA
2 - Idaho Botanical Garden, Natural Plant communities specialist, Boise, Idaho, usa

Keywords:
Cladonia
subtropical
transplant
ecology.

Presentation Type: Symposium or Colloquium Presentation
Session: SY8
Location: Ballroom 2/Cliff Lodge - Level B
Date: Tuesday, July 28th, 2009
Time: 3:30 PM
Number: SY8004
Abstract ID:975


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