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Optimizing atrazine catabolism in Pseudomonas sp. strain ADP
Title
Optimizing atrazine catabolism in Pseudomonas sp. strain ADP.
Creator
Anderson, Robert., Harriet L. Wilkes Honors College
Abstract/Description
Atrazine is a popular herbicide used in over 80 countries to inhibit the growth of broadleaf and grassy weeds. Atrazine is a common pollutant in soil and groundwater, and high concentrations of atrazine cause developmental defects in fish, amphibians, and birds. The bacteria Pseudomonas sp. strain ADP (P.ADP) uses atrazine as a nitrogen source by transforming atrazine to ammonia through a number of enzymatic reactions. In this project I measured the growth and atrazine degradation of P.ADP in...
Show moreAtrazine is a popular herbicide used in over 80 countries to inhibit the growth of broadleaf and grassy weeds. Atrazine is a common pollutant in soil and groundwater, and high concentrations of atrazine cause developmental defects in fish, amphibians, and birds. The bacteria Pseudomonas sp. strain ADP (P.ADP) uses atrazine as a nitrogen source by transforming atrazine to ammonia through a number of enzymatic reactions. In this project I measured the growth and atrazine degradation of P.ADP in media with atrazine as the sole nitrogen source. A mutant strain isolated after mutagenesis with UV light showed faster growth and reached higher densities than the control strain. A series of mating experiments were performed to determine whether the growth mutation was on the atrazine degrading plasmid or in the chromosome. The limitations and potential of P.ADP for atrazine degradation are discussed.
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Date Issued
2010
PURL
http://purl.flvc.org/FAU/3334252
Subject Headings
Plasmids, Genetics, Alginates, Physiological effect, Microbial ecology, Biotransformation (Metabolism)
Format
Document (PDF)
Hydrologic and topographic gradient effects on woody vegetation of tree islands in the Everglades Wildlife Management Area
Title
Hydrologic and topographic gradient effects on woody vegetation of tree islands in the Everglades Wildlife Management Area.
Creator
Anderson, Michael Robert., Florida Atlantic University, Volin, John C.
Abstract/Description
Water management in the Everglades has been a challenge for managing agencies for quite some time. Presently, restoration efforts are underway to reestablish natural hydrological patterns such as flow, depth, and hydroperiod. Tree island health is of particular concern because of its importance to the functional integrity of the greater Everglades ecosystem. This study was designed to determine the effects of different hydrological patterns and elevations on native woody vegetation on tree...
Show moreWater management in the Everglades has been a challenge for managing agencies for quite some time. Presently, restoration efforts are underway to reestablish natural hydrological patterns such as flow, depth, and hydroperiod. Tree island health is of particular concern because of its importance to the functional integrity of the greater Everglades ecosystem. This study was designed to determine the effects of different hydrological patterns and elevations on native woody vegetation on tree islands. The study site was the Everglades Wildlife Management Area (EWMA) in the north central Everglades. The study site was broken up into two hydrological zones: dry zone and moderately wet zone. It was found that both hydrology and relative elevation were important predictors of woody species diversity and density. Average hydroperiod and ponding depth were the best sole predictors explaining up to 50% of the woody vegetation variability found within the tail and fringe community as well as the whole tree island.
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Date Issued
2000
PURL
http://purl.flvc.org/fcla/dt/12709
Subject Headings
Ecosystem management--Florida--Everglades, Woody plants--Florida--Everglades, Everglades Wildlife Management Area (Fla )
Format
Document (PDF)
Selected single parent variables and their relation to disruptive middle school student behavior
Title
Selected single parent variables and their relation to disruptive middle school student behavior.
Creator
Barnes, Robert Grabill, Jr., Florida Atlantic University, Shrader, E. Frank, Anderson, Arthur
Abstract/Description
This study compared referrals for disruptive school behavior of middle school students living in single parent households. The cumulative referrals as well as the individual types of referrals were examined looking for differences between male and female students from single parent homes. Differences in referral rate and type were also examined according to the gender of the custodial parent. An examination of the data was further undertaken to look for referral differences as they are...
Show moreThis study compared referrals for disruptive school behavior of middle school students living in single parent households. The cumulative referrals as well as the individual types of referrals were examined looking for differences between male and female students from single parent homes. Differences in referral rate and type were also examined according to the gender of the custodial parent. An examination of the data was further undertaken to look for referral differences as they are affected by the possible custodial parent gender, child gender combinations. A review of the literature indicated that gender of the child of the single parent home has an affect on behavior outside the school setting. Very little could be found in the literature pertaining to the gender of the single parent and its affect on the students behavior. The results of this study indicated that gender does have an impact on the school behavior of students from single parent homes. Findings in this study include: (1) The gender of the custodial parent of the middle school student living in a single parent home does not have an affect on the referral rate of the student; (2) The gender of the middle school student living in a single parent household appears to have a significant affect on the referral rate of the student; (3) There is no interaction between the gender of the student and the gender of the custodial parent as it pertains to the student's referral rate; (4) There is a significant relationship between the gender of the middle school student living in a single parent household and the types of referrals received for disruptive school behavior; (5) There is no relationship between the gender of the custodial parent of the middle school student and the types of referrals received for disruptive school behavior. (Abstract shortened with permission of author.)
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Date Issued
1989
PURL
http://purl.flvc.org/fcla/dt/11936
Subject Headings
Children of single parents, Behavior disorders in children
Format
Document (PDF)
Nutrient pollution of coastal rivers, bays, and seas
Title
Nutrient pollution of coastal rivers, bays, and seas.
Creator
Howarth, Robert, Anderson, Donald, Cloern, James, Elfring, Chris, Hopkinson, Charles, Lapointe, Brian E., Malone, Tom C., Marcus, Nancy H., McGlathery, Karen, Sharpley, Andrew, Walker, Dan
Date Issued
2000
PURL
http://purl.flvc.org/FCLA/DT/3174988
Subject Headings
Nutrient pollution of water, Nitrogen cycle
Format
Document (PDF)
Developmental Exposure to Polychlorinated Biphenyls Interferes with Experience-Dependent Dendritic Plasticity and Ryanodine Receptor Expression in Weanling Rats
Title
Developmental Exposure to Polychlorinated Biphenyls Interferes with Experience-Dependent Dendritic Plasticity and Ryanodine Receptor Expression in Weanling Rats.
Creator
Yang, Dongren, Kim, Kyung Ho, Phimister, Andrew, Bachstetter, Adam D., Ward, Thomas R., Stackman, Robert W., Mervis, Ronald F., Wisniewski, Amy B., Klein, Sabra L., Kodavanti, Prasada Rao S., Anderson, Kim A., Wayman, Gary, Pessah, Isaac N., Lein, Pamela J.
Date Issued
2009-03-01
PURL
http://purl.flvc.org/fau/fd/FAUIR000189
Format
Citation