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COMPARATIVE STUDIES ON POPULATION GENETIC STRUCTURE OF FLORIDA’S THREATENED PINE-PINK (Bletia purpurea) ORCHID
Title
COMPARATIVE STUDIES ON POPULATION GENETIC STRUCTURE OF FLORIDA’S THREATENED PINE-PINK (Bletia purpurea) ORCHID.
Creator
Simpson, Bethany, Baldwin, John, Florida Atlantic University, Department of Biological Sciences, Charles E. Schmidt College of Science
Abstract/Description
Anthropogenic impacts, including urbanization and development of the Greater Everglades ecosystem, have severely reduced and fragmented populations of Bletia purpurea. Differences across populations in Florida, such as habitat preferences, blooming periods, and self-fertilization abilities have been documented. Genetic data is becoming essential for developing effective conservation strategies to prevent the disappearance of threatened orchids from the wild. Using a target capture method with...
Show moreAnthropogenic impacts, including urbanization and development of the Greater Everglades ecosystem, have severely reduced and fragmented populations of Bletia purpurea. Differences across populations in Florida, such as habitat preferences, blooming periods, and self-fertilization abilities have been documented. Genetic data is becoming essential for developing effective conservation strategies to prevent the disappearance of threatened orchids from the wild. Using a target capture method with the Orchidaceae963 baitset, we assessed the genetic diversity of eight wild populations and five cultivated sources of B. purpurea. Our findings reveal two areas of concern; S1 which forms a distinct genetic cluster, and E3, where inbreeding rates are notably high. Additionally, three of the five cultivated sources showed significant differentiation from the wild populations, highlighting the need for more diverse maternal lines in cultivation efforts. These results emphasize the critical role of genetic assessments in informing conservation strategies for threatened orchid populations.
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Date Issued
2024
PURL
http://purl.flvc.org/fau/fd/FA00014560
Subject Headings
Orchids, Orchids--Conservation, Molecular ecology
Format
Document (PDF)
POLLINATION BIOLOGY IN THE ORCHIDACEAE: POLYSTACHIA FLAVESCENS, EPIDENDRUM DIFFORME, AND EULOPHIA ALTA FROM SOUTH FLORIDA; ENCYCLIA GRACILIS, ENCYCLIA ALTISSIMA, AND ENCYCLIA RUFA FROM GREAT INAGUA, BAHAMAS
Title
POLLINATION BIOLOGY IN THE ORCHIDACEAE: POLYSTACHIA FLAVESCENS, EPIDENDRUM DIFFORME, AND EULOPHIA ALTA FROM SOUTH FLORIDA; ENCYCLIA GRACILIS, ENCYCLIA ALTISSIMA, AND ENCYCLIA RUFA FROM GREAT INAGUA, BAHAMAS.
Creator
GOSS, GARY JACK, Florida Atlantic University
Abstract/Description
Pollination is described for six orchid species. Eulophia alta is autogamous. The advantages and disadvantages inherent in a population reproducing by this mode are discussed. The remaining species require an animal vector for successful reproduction. The floral mechanisms responsible for the attraction and the proper positioning of these vectors for pollination are stressed. Additional mechanisms which increase the chances for outcrossing are included. For Epidendrum difforme and the Inagua...
Show morePollination is described for six orchid species. Eulophia alta is autogamous. The advantages and disadvantages inherent in a population reproducing by this mode are discussed. The remaining species require an animal vector for successful reproduction. The floral mechanisms responsible for the attraction and the proper positioning of these vectors for pollination are stressed. Additional mechanisms which increase the chances for outcrossing are included. For Epidendrum difforme and the Inagua encyclias, evolutionary implication of the pollination systems are discussed. For the latter group it is explained why a wide variety of non-pollinating visitors are unable to operate the pollination mechaniams. Pollination was not observed for Encyclia altissima and Encyclia rufa.
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Date Issued
1973
PURL
http://purl.flvc.org/fcla/dt/13585
Subject Headings
Orchids--Florida, Orchids--Bahamas--Great Inagua Island, Orchid culture--Florida, Orchid culture--Bahamas--Great Inagua Island
Format
Document (PDF)
EPIPHYTIC ORCHIDS OF ANDROS ISLAND, BAHAMAS ISLANDS
Title
THE EPIPHYTIC ORCHIDS OF ANDROS ISLAND, BAHAMAS ISLANDS.
Creator
SAULEDA, RUBEN PRIMITIVO., Florida Atlantic University
Abstract/Description
The taxonomy and ecology of the epiphytic orchids of Andros Island, Bahama Islands are treated. Island topography and the habitats which support orchid populations are discussed. A total of 24 species and two varieties comprising 10 genera are treated in detail. Also included are generic descriptions and keys to the genera and to the species.
Date Issued
1979
PURL
http://purl.flvc.org/fcla/dt/13993
Subject Headings
Orchids--Varieties--Bahamas, Orchids--Bahamas--Andros Island--Identification, Orchids--Ecology--Bahamas--Andros Island
Format
Document (PDF)
INSULAR BIOGEOGRAPHIC PATTERNS IN THE CARIBBEAN ORCHIDACEAE: A TEST OF THE THEORY OF ISLAND BIOGEOGRAPHY
Title
INSULAR BIOGEOGRAPHIC PATTERNS IN THE CARIBBEAN ORCHIDACEAE: A TEST OF THE THEORY OF ISLAND BIOGEOGRAPHY.
Creator
PLOTECIA, RAYMOND KNIGHT., Florida Atlantic University
Abstract/Description
The distribution of orchid species on nineteen islands of the Greater and Lesser Antilles is listed. These data are used to test hypotheses inferred from the MacArthur and Wilson (1967) theory of island biogeography. Linear regressions show that the slope of the species area curve for orchids on these islands is not different from the range 0.20 to 0.35 predicted in the theory. The slope of this line increases with distance from Central America, the suspected source of colonizing species....
Show moreThe distribution of orchid species on nineteen islands of the Greater and Lesser Antilles is listed. These data are used to test hypotheses inferred from the MacArthur and Wilson (1967) theory of island biogeography. Linear regressions show that the slope of the species area curve for orchids on these islands is not different from the range 0.20 to 0.35 predicted in the theory. The slope of this line increases with distance from Central America, the suspected source of colonizing species. Multiple regression analysis is used to test the relationship of the total number of species, the number of endemics, and the number of non-endemics with the geographic parameters of area, altitude, distances from Central and South America, and inter-island isolation. The validity of the theory and the biological implications of the geographic parameters are discussed.
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Date Issued
1975
PURL
http://purl.flvc.org/fcla/dt/13709
Subject Headings
Orchids--Caribbean Area--Geographical distribution
Format
Document (PDF)