Current Search:   Baldwin, John (x)

View All Items

  • CSV Spreadsheet
(21 - 24 of 24)

Pages

UTILIZATION OF ORGANIC PHOSPHORUS COMPOUNDS BY AXENIC MICROCYSTIS AERUGINOSA
Title
UTILIZATION OF ORGANIC PHOSPHORUS COMPOUNDS BY AXENIC MICROCYSTIS AERUGINOSA.
Creator
Breeden, Kelley L., Baldwin, John, Louda, J. William, Florida Atlantic University, Department of Environmental Sciences, Charles E. Schmidt College of Science
Abstract/Description
Freshwater harmful algal blooms (HABs) are increasing in severity and frequency. These blooms are devastating to the communities surrounding these bodies of water due to their numerous health, economic, and environmental impacts (Hallegraeff et al. 1995; Smith 2003; O’Neil et al. 2012; Bláha et al. 2009; V. H. Smith et al. 1999). In Florida, runoff containing fertilizers, human wastes, or industrial wastes contribute to the eutrophication in these lakes and contribute to these freshwater...
Show moreFreshwater harmful algal blooms (HABs) are increasing in severity and frequency. These blooms are devastating to the communities surrounding these bodies of water due to their numerous health, economic, and environmental impacts (Hallegraeff et al. 1995; Smith 2003; O’Neil et al. 2012; Bláha et al. 2009; V. H. Smith et al. 1999). In Florida, runoff containing fertilizers, human wastes, or industrial wastes contribute to the eutrophication in these lakes and contribute to these freshwater blooms (Val H. Smith 2003; Heisler et al. 2008; O’Neil et al. 2012). M. aeruginosa, a toxic cyanobacterium, often devastates Lake Okeechobee. M. aeruginosa die off creates anoxic conditions and produces a toxin that causes major environmental loss. This project is aimed to increase knowledge on how organic phosphorus compounds affect the growth of the axenic M. aeruginosa and investigate the postulated interactome (Cook et al. 2020). Through these experiments, it was shown that axenic M. aeruginosa cannot utilize organic phosphorus compounds and therefore shows no growth when grown in this media. This research is critical to furthering our understanding of the mechanisms behind these blooms and to mitigating them.
Show less
Date Issued
2023
PURL
http://purl.flvc.org/fau/fd/FA00014249
Subject Headings
Microcystis aeruginosa, Harmful Algal Bloom, Organophosphorus Compounds
Format
Document (PDF)
THE GENETIC ASSESSMENT OF TWO MERGING ATLANTIC SPOTTED DOLPHIN (Stenella frontalis) COMMUNITIES ON GREAT BAHAMA BANK
Title
THE GENETIC ASSESSMENT OF TWO MERGING ATLANTIC SPOTTED DOLPHIN (Stenella frontalis) COMMUNITIES ON GREAT BAHAMA BANK.
Creator
Knapp, Hayley Lynn, Baldwin, John, Florida Atlantic University, Department of Biological Sciences, Charles E. Schmidt College of Science
Abstract/Description
After an unexpected displacement of Atlantic spotted dolphins (Stenella frontalis) from Little Bahama Bank (LBB) to Great Bahama Bank (GBB) in 2013, the LBB immigrant and GBB resident spotted dolphins were observed socially merging and initiating courtship despite previous segregation on GBB post-displacement. This project assessed the genetic integration between them. Through microsatellite analyses and genetic differentiation, reciprocal gene flow appears to be occurring between the two...
Show moreAfter an unexpected displacement of Atlantic spotted dolphins (Stenella frontalis) from Little Bahama Bank (LBB) to Great Bahama Bank (GBB) in 2013, the LBB immigrant and GBB resident spotted dolphins were observed socially merging and initiating courtship despite previous segregation on GBB post-displacement. This project assessed the genetic integration between them. Through microsatellite analyses and genetic differentiation, reciprocal gene flow appears to be occurring between the two communities. One male was confidently assigned paternity and six males were selected as the most likely candidate males of calves. Three mottled males were designated as the most likely candidate males of calves, indicating that younger males may be reproductively successful.
Show less
Date Issued
2024
PURL
http://purl.flvc.org/fau/fd/FA00014550
Subject Headings
Atlantic spotted dolphin, Haplotypes, Stenella frontalis, Great Bahama Bank (Bahamas)
Format
Document (PDF)
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.
Show less
Date Issued
2024
PURL
http://purl.flvc.org/fau/fd/FA00014560
Subject Headings
Orchids, Orchids--Conservation, Molecular ecology
Format
Document (PDF)
Reproductive success of male Atlantic spotted dolphins (Stenella frontalis) revealed by noninvasive genetic analysis of paternity
Title
Reproductive success of male Atlantic spotted dolphins (Stenella frontalis) revealed by noninvasive genetic analysis of paternity.
Creator
Green, Michelle L., Herzing, Denise L., Baldwin, John D.
Date Issued
2011-03
PURL
http://purl.flvc.org/fau/flvc_fau_islandoraimporter_10.1139_Z10-111_1631733445
Format
Citation

Pages