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Influences of mosquito control impoundments on Rhizophora mangle initial propagule establishment and growth
Title
Influences of mosquito control impoundments on Rhizophora mangle initial propagule establishment and growth.
Creator
Coldren, Glenn A., Harriet L. Wilkes Honors College
Abstract/Description
Rotational Impoundment Management (RIM) is a commonly used method of mosquito control in Florida involving seasonal flooding during mosquito breeding season and allowances for natural tidal variations during summer flooding. My study looks at the effects of this impoundment strategy on the red mangrove, Rhizophora mangle L., recruitment. Primary productivity of mangroves in these impoundments has been found to be similar to that of natural areas, although nutrient levels have been found to...
Show moreRotational Impoundment Management (RIM) is a commonly used method of mosquito control in Florida involving seasonal flooding during mosquito breeding season and allowances for natural tidal variations during summer flooding. My study looks at the effects of this impoundment strategy on the red mangrove, Rhizophora mangle L., recruitment. Primary productivity of mangroves in these impoundments has been found to be similar to that of natural areas, although nutrient levels have been found to differ greatly. R. mangle is a completely viviparous species, and as such, maternal conditions have a strong effect on propagules. My study compares the initial establishment and growth of R. mangle propagules collected from and planted in both impounded and non-impounded sites.
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Date Issued
2007
PURL
http://purl.flvc.org/FAU/11618
Subject Headings
Red mangrove, Mangrove ecology, Wetland conservation, Mosquitos, Control
Format
Document (PDF)
Mangrove Morphological Change Across an Environmental Gradients: Implications for Competitive Ability in a Changing Climate
Title
Mangrove Morphological Change Across an Environmental Gradients: Implications for Competitive Ability in a Changing Climate.
Creator
Standish, Hilary, Proffitt, C. Edward, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Biological Sciences
Abstract/Description
In Florida, mangroves have responded to climate change by slowly migrating northward into traditional salt marsh habitat. However, little is understood about the relationships among mangrove growth form plasticity and environmental conditions. In addition, the effects of the mangrove northward expansion on pre-existing salt marsh communities are unknown, especially any influences of differences in tree morphology. The size, canopy structure, and root structure of the three mangrove species...
Show moreIn Florida, mangroves have responded to climate change by slowly migrating northward into traditional salt marsh habitat. However, little is understood about the relationships among mangrove growth form plasticity and environmental conditions. In addition, the effects of the mangrove northward expansion on pre-existing salt marsh communities are unknown, especially any influences of differences in tree morphology. The size, canopy structure, and root structure of the three mangrove species Rhizophora mangle, Avicennia germinans, and Laguncularia racemosa were measured at six sites along the east coast of Florida. Structural equation modeling was used to evaluate the multivariate relationships between environmental and biotic variables. Mangrove growth form varied widely with environmental variables. The results of this study suggest that R. mangle expansion into salt marsh may rely on interactions with salt marsh and shading as well as on climatic variables, which has implications for future mangrove expansion northward in Florida.
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Date Issued
2016
PURL
http://purl.flvc.org/fau/fd/FA00004759, http://purl.flvc.org/fau/fd/FA00004759
Subject Headings
Mangrove forests--Florida., Mangrove management., Mangrove ecology., Mangrove conservation., Marine ecosystem management--Florida., Coastal zone management--Florida., Forest ecology., Climatic changes--Florida.
Format
Document (PDF)
Postglacial expansion of Rhizophora Mangle l. In the Caribbean Sea and Florida
Title
Postglacial expansion of Rhizophora Mangle l. In the Caribbean Sea and Florida.
Creator
Kennedy, John Paul, Devlin, Donna, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Biological Sciences
Abstract/Description
The Last Glacial Maximum (LGM) was a period of massive range contraction for numerous taxa, including the water-dispersed mangrove species, Rhizophora mangle L. Following the LGM, R. mangle expanded poleward via propagule transport by ocean currents. In this study, we use microsatellite loci to characterize the genetic structure of nine R. mangle populations and compare potential expansion pathways that resulted in the colonization of the Florida peninsula and Caribbean islands. Results show...
Show moreThe Last Glacial Maximum (LGM) was a period of massive range contraction for numerous taxa, including the water-dispersed mangrove species, Rhizophora mangle L. Following the LGM, R. mangle expanded poleward via propagule transport by ocean currents. In this study, we use microsatellite loci to characterize the genetic structure of nine R. mangle populations and compare potential expansion pathways that resulted in the colonization of the Florida peninsula and Caribbean islands. Results show comparatively greater genetic connectivity between the Caribbean mainland and Florida, a similar pattern between West Africa and Caribbean islands, and substantial admixture on the island of San Salvador, the Bahamas. We conclude that Florida and Caribbean island R. mangle populations were likely recolonized via different expansion pathways. Estimates of recent migration rates are low and populations are structured into three regions (Caribbean mainland, Caribbean islands, Florida). These findings provide insight for future management and conservation initiatives.
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Date Issued
2014
PURL
http://purl.flvc.org/fau/fd/FA00004206, http://purl.flvc.org/fau/fd/FA00004206
Subject Headings
Mangrove ecology -- Caribbean Sea, Mangrove ecology -- Florida, Marine ecology -- Caribbean Sea, Marine ecology -- Florida., Red mangrove, Shore protection -- Florida, Wetland conservation
Format
Document (PDF)