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PubMed1981

Interrelationships of parasites of white-winged doves and mourning doves in Florida.

The parasites of indigenous populations of mourning doves (Zenaida macroura) in north and south Florida were compared with those of an introduced population of white-winged doves (z. asiatica) in south Florida. Thirty-two species of parasites including 5 protozoans, 7 nematodes, 2 trematodes, 2 cestodes, 7 acarines, 7 mallophagans, and 2 dipterans were found. Of these, 16 common to both species of doves. Mourning doves from north Florida showed a more diverse parasite fauna than did the white-winged or mourning dove populations from south Florida. Nematodes were the most common parasites in all three populations; infected doves contained one or two nematode species per dove. Total helminth burdens per infected dove averaged 13.1 for white-winged doves, 19.9 for mourning doves in south Florida, and 6.6 for mourning doves in north Florida. The prevalence of infections by Trichomonas gallinae was higher in white-winged doves (97%) than in mourning doves in south Florida (17%) or in mourning doves in north Florida (1%). The high prevalence of this parasite in expanding populations of white-winged doves may pose a threat to mourning dove populations since some strains of T. gallinae are pathogenic.

Animals↗
PubMed1999

Tobacco use among middle and high school students--Florida, 1998 and 1999.

Tobacco use is the single leading preventable cause of death in the United States, and an estimated $2 billion is spent annually in Florida to treat disease caused by smoking. Florida appropriated $23 million in fiscal year 1997 and $70 million in fiscal year 1998 to fund the Florida Pilot Program on Tobacco Control to prevent and reduce tobacco use among Florida youth. To determine the prevalence of cigarette, cigar, and smokeless tobacco (i.e., chewing tobacco and snuff) use among Florida middle and high school students in public schools, the Florida Department of Health conducted the Florida Youth Tobacco Survey (FYTS) in February 1998 and February 1999. The purpose of these surveys was to establish baseline parameters and monitor the progress of the pilot program, which began in April 1998. This report summarizes advance data from the surveys, which indicate that, from 1998 to 1999, the percentage of Florida public middle and high school students who smoked cigarettes decreased significantly and that the percentage of middle school students who smoked cigars and used smokeless tobacco products decreased significantly.

Adolescent↗
PubMed1994

Analysis of HLA DQ alpha allele and genotype frequencies in populations from Florida.

HLA DQ alpha allele and genotype frequencies for Caucasian, African American, Haitian, and Hispanic populations in Florida have been estimated. The Florida laboratories involved in these studies collected donor samples from a variety of sites including clinical laboratories, victim and suspect standards, blood banks, county jail detainees, and laboratory personnel. We have determined that the Caucasian and African American DQ alpha genotype frequencies do not deviate significantly from Hardy-Weinberg expectations and as a result of this heterogeneity analyses, data from the four Florida Caucasian populations may be combined and data from the four Florida African American populations may be combined to form two large HLA DQ alpha genotype frequency databanks. Further, data from the Florida Haitian population may be combined with the Florida African American population. Comparison of the combined Florida Caucasian populations, combined Florida African American populations, the Palm Beach Sheriff's Office (PBSO) Hispanic, and PBSO Haitian population with other databases does not support combination because allele frequency distributions are heterogeneous.

Alleles↗
PubMed2004

Reports of envenomation by brown recluse spiders (Araneae: Sicariidae) outnumber verifications of Loxosceles spiders in Florida.

Bites attributed to the brown recluse spider, Loxosceles reclusa Gertsch & Mulaik, are frequently reported by medical personnel throughout Florida, whereas the extensive arachnological evidence contradicts the alleged widespread occurrence of Loxosceles spiders in the state. We compared reports of brown recluse spider bites made by medical personnel from a 6-yr Florida poison control center database to the known verifications of Loxosceles spiders from 100 yr of Florida arachnological data. Medical personnel diagnosed 124 brown recluse spider bites from 31 of Florida's 67 counties in 6 yr. In contrast, only 11 finds of approximately 70 Loxosceles spiders have been made in 10 Florida counties in 100 yr. Florida does not have sufficient widespread populations of Loxosceles spiders to warrant consideration of brown recluse spider envenomation as a probable etiology of dermonecrosis. Florida health care would improve if medical personnel would consider the multitude of other etiologies that manifest in dermonecrosis.

Animals↗
PubMed2001

Ixodid ticks on white-tailed deer and feral swine in Florida.

A state-wide survey was conducted in Florida during the 1997-99 hunting seasons to examine white-tailed deer (Odocoileus virginianus) and feral swine (Sus scrofa) for potential indigenous vectors of the rickettsial agent of heartwater, Cowdria ruminantium. A total of 504 white-tailed deer and 166 feral swine was examined from 30 wildlife management areas across the state. Amblyomma maculatum, an experimental vector of C. ruminantium, was common on both deer and feral swine throughout the state. Of the collection of 3,169 ticks, 34.5% were Ixodes scapularis Say, 34.0% Amblyomma americanum (L.), 25.5% Amblyomma maculatum Koch, 5.8% Dermacentor variabilis (Say), 0.4% Ixodes affinis Neumann, 0.03% Rhipicephalus sanguineus (Latreille) and 0.01% Amblyomma auricularium (Conil). The only exotic tick collected was A. auricularium, which is found on armadillos in Central and South America and is not known to be associated with any disease. Overall, the most prevalent species on deer were I. scapularis (51.1%) and A. maculatum (35.8%), with A. americanum less prevalent (16.0%) and D. variabilis (3.0%) and I. affinis (1.9%) rare. On feral swine, the most prevalent species were I. scapularis (69.7%) and D. variabilis (56.9%), with A. maculatum (16.2%) and A. americanum (4.6%) less common. The geographic distribution of ticks differed significantly throughout the state. Both A. maculatum and Dermacentor variabilis were more prevalent on deer from southern Florida compared to northern and central Florida. In contrast, A. americanum were more prevalent in northern and central Florida but rare in southern Florida, and I. scapularis were more common in southern compared to northern Florida. These geographic differences may reflect differences in the risk of tick-borne diseases to domestic animals, wildlife and humans within Florida.

Animals↗
PubMed1988

Older Canadians in Florida. The social networks of international seasonal migrants.

This study focuses on selected aspects of the social networks of older Canadians who are seasonal migrants to Florida, using a large respondent pool solicited from the readership of a newspaper serving the Canadian population in Florida. Findings such as the high rate of home ownership and the geographic stability of their Florida destination indicate the degree of integration in Florida. The respondent's contact with family members is relatively high while in Canada but considerably lower when in Florida. However, for a minority of respondents, a seasonal migration brings them closer to family members. This reduction of family contact is compensated by new friendships formed in the predominantly age-homogeneous residential environment of Florida. It is clear that older Canadians who winter in Florida have strong social networks when they are away from home.

Aged↗
PubMedDate not supplied

Relation of infant mortality to the availability of maternity care in rural Florida.

BACKGROUND: This cross-sectional study was designed to explore the impact of the availability of maternity care services on the infant mortality rates in nonmetropolitan (rural) counties in Florida. METHODS: We evaluated the sufficiency of physicians providing maternity care in each rural county. We then constructed a mathematical model to compare physician availability with the infant mortality rates for each county, while controlling for socioeconomic variables. RESULTS: Thirty-one family physicians and 974 obstetrician-gynecologists were delivering babies in Florida in 1991. Forty-seven counties were lacking in maternity care services; 45 of these counties had family physicians who practiced in the county but did not provide maternity care services. There was a negative correlation in rural counties between availability of maternity care services and infant mortality (R = -0.42, R2 = 0.176, P = 0.012), implying that 17.6 percent of the variation in rural Florida's infant mortality was explained by a ranking in physician availability. Multivariate analysis revealed that increasing infant death rates can be predicted by decreasing physician availability (P = 0.003). A multiplicative risk model developed for this study demonstrated that the loss of 1 family physician delivering babies would predict the increase of infant mortality by 2.3 percent, and the loss of 1 obstetrician-gynecologist increased infant mortality by 9.6 percent. CONCLUSIONS: Access to maternity care for women in rural Florida is a problem that could be hampering Florida's ability to reduce its infant mortality rate. Family physicians appear to be the most geographically distributed health care providers in Florida; therefore, strategies should be developed to recruit Florida's rural family physicians into maternity care.

Cross-Sectional Studies↗
PubMed2005

Florida public health nurse workforce initiative: opportunity through crisis.

The National Public Health Leadership Institute (NPHLI), a partnership between the Centers for Disease Control and Prevention and the University of North Carolina at Chapel Hill invites public health professionals to participate in a 2 year leadership program. Three Florida nurses participated in the NPHLI along with a cadre of 40 to 50 participants from the United States and foreign countries. Part of the commitment involved implementing a leadership project. This team chose to address the nursing shortage by developing and piloting mentorship program. Baseline research included a basic review of the literature and involvement in several work groups addressing various aspects of employing and retaining qualified public health nurses in Florida. During their NPHLI scholar year, team members sought input from a variety of professional sources on the reasons for the shortage of public health nurses in Florida. Based on responses from nurses, professional association members, and employees in the Florida Department of Health, team members developed a nursing mentorship project designed to address public health nursing retention and education. The goal was to develop a two-pronged mentorship program, which supported the attainment of clinical competence and workplace confidence while also improving the public health theoretical knowledge base of more experienced nurses. Nursing leadership at both the state and local levels agreed and embraced the concept. The Florida Team developed a Mentorship Handbook, which contains recruitment criteria, baseline, midterm and end of project assessment tools, and numerous other documents. The Team gained endorsement for the project and a commitment to see it through from the Department of Health's Nursing Office. The Florida Nurses Association partnered with the team to initiate the kickoff and involve team members in important discussion groups. In effecting change it is vital to have engaged and included the targeted "community" in the process. Achieving buy-in and ownership takes some investing. Time is important, everything seems to take longer than expected-therefore maintaining momentum is critical for team members. Finding resources for an unfunded project can be a challenge. Creative thinking in how the project relates to available resources is important.

Florida↗
PubMed2005

The condition of coral reefs in South Florida (2000) using Coral disease and bleaching as indicators.

The destruction of coral reef habitats has occurred at unprecedented levels during the last three decades. Coral disease and bleaching in the Caribbean and South Florida have caused extensive coral mortality with limited recovery, often coral reefs are being replaced with turf algae. Acroporids were once dominant corals and have diminished to the state where they are being considered as endangered species. Our survey assessed the condition of reef corals throughout South Florida. A probability-based design produced unbiased estimates of the spatial extent of ecological condition, measured as the absence or presence and frequency or prevalence of coral diseases and bleaching intensity over large geographic regions. This approach allowed us to calculate a quantifiable level of uncertainty. Coral condition was estimated for 4100 hectares (ha) (or 41.0 km2) of coral reefs in South Florida, including reefs in the Florida Keys National Marine Sanctuary (FKNMS), New Grounds, Dry Tortugas National Park (DTNP), and Biscayne National Park (BNP). The absence or presence of coral disease, 'causal' coral bleaching, partial bleaching and coral paling were not good indicators of overall coral condition. It was more useful to report the prevalence of anomalies that indicated a compromised condition at both the population and community levels. For example, 79% of the area in South Florida had less than 6% of the coral colonies diseased, whereas only 2.2% (97.15 ha) of the sampled area had a maximum prevalence of 13% diseased coral colonies at any single location. The usefulness of 'causal bleaching' might be more important when considering the prevalence of each of the three different states at a single location. For example, paling was observed over the entire area, whereas bleaching and partial bleaching occurred at 19 and 41% of the area, respectively. An index for coral reef condition might integrate the prevalence and species affected by each bleaching state at individual locations. By establishing these baselines, future surveys can examine changes and trends in the spatial distribution of coral conditions in South Florida and able to score the reefs as to their health status.

Animals↗
PubMedDate not supplied

Retirement among Florida's certified nurse-midwives: an impending workforce crisis.

An anonymous survey was mailed to 499 CNMs in Florida in May 2001 to examine the impact of CNM retirement on the Florida women's health provider workforce and to estimate the replacement demand for CNMs. The survey also investigated where Florida's CNMs studied midwifery, reasons for choosing education programs, reasons for moving to Florida, and causes of underemployment of CNMs. Two hundred eighty respondents returned the survey. Thirty-nine percent of respondents received their midwifery education in Florida. Eighty-one percent of respondents were working as CNMs. From 2010 through 2025, an average of 11 CNMs in Florida will reach age 65 each year. These data indicate that retirement will generate demand for new CNMs in the next two decades. These data, along with future research tracking midwifery education, employment, and retirement, could be used to plan program funding, clinical site needs, and legislative support of midwifery.

Aged↗
PubMed1999

Readmission for group B streptococci or Escherichia coli infection among full-term, singleton, vaginally delivered neonates after early discharge from Florida hospitals for births from 1992 through 1994.

BACKGROUND: In Florida during the period 1992 through 1994, there was a major drop in the length of stay for full-term, singleton, vaginally delivered newborn babies in the hospital. A major concern on the part of clinicians has been the potential of an increased risk of sepsis (manifesting itself after discharge) associated with earlier newborn discharge from the hospital. We used the Florida hospital discharge dataset to study the frequency of readmission with sepsis after early newborn discharge to home. METHODS: Using the Florida Agency for Health-Care Administration Acute Care Hospital Discharge Dataset, we used a multivariate, probabilistic matching algorithm to merge newborn discharge records for births from 1992 through 1994 with readmission discharge records (including hospital-to-hospital transfers and multiple readmissions) during the first 28 days of life. We used the resulting merged dataset to study bacterial infection diagnoses on newborn and readmission records and to examine relationships between readmission diagnoses and timing of newborn discharge among the 364,528 full-term, singleton, vaginally delivered babies (FTSVDBs) without congenital anomalies from 1992 through 1994 in Florida acute-care hospitals. RESULTS: Overall, 86.3% of all FTSVDBs born in Florida acute-care hospitals were discharged between day of life (DOL) 0 (born and discharged the same day) and DOL 2 (discharged two calendar days after birth). The group B streptococci (GBS) infection code was found on the newborn discharge records of 9.2 per 10,000 FTSVDBs over the 3-year period, 5.9% of which involved hospital-to-hospital transfer of the baby. Escherichia coli infection codes were found on the records of 3.4 per 10,000 FTSVDBs over the 3-year period, 2.3% of which involved hospital-to-hospital transfer of the baby. Of those FTSVDBs discharged to home without infection codes during DOL 1 to 2, 0.8 per 10,000 were readmitted within 7 days (inclusive) with GBS infection, and 2.0 per 10,000 with E. coli infection. When the data for readmitted babies were pooled for 1992 through 1994, the odds ratio for probability of readmission comparing discharges on DOL 1 to DOL 2 for GBS was 2.27 (95% confidence interval, 1.83 to 2.70), and for E. coli 2.16 (95% confidence interval, 1.46 to 2.85). Over this 3-year period, for babies discharged on DOL 1, there was a 115% increase in the rate of readmission for GBS from 1992 through 1994 (p < 0.01) and a 36.5% increase in the rate of readmission for E. coli (p < 0.05). However, among FTSVDBs discharged on DOL 2, the rate of readmission for both GBS and E. coli did not change during the period 1992 through 1994. There were no deaths among FTSVDBs as either newborns, transfers, or readmissions within 7 days of discharge, with either GBS or E. coli infection codes on their discharge record. CONCLUSION: From 1992 through 1994, the increased number of babies discharged early in Florida was temporally associated with an increased rate of readmission during the week after discharge for both GBS and E. coli infection among babies discharged on the calendar day after birth. With an increase in both the number of babies exposed to the risks of early discharge, and an increased rate of these serious infections during the week after discharge from the hospital, the number of these babies grew to exceed, by several fold, the number of babies with inborn errors of metabolism picked up by state screening programs.

Age Factors↗
PubMed2003

Recent Mediterranean fruit fly (Diptera: Tephritidae) infestations in Florida--a genetic perspective.

Microsatellite and mitochondrial DNA (mtDNA) variability data were used to study infestations of the Mediterranean fruit fly, Ceratitis capitata (Wiedemann) in Florida in 1997 and 1998. A total of 132 flies collected in monitoring traps or as larvae removed from fruit were examined at three polymorphic mtDNA restriction sites and two microsatellite loci. All of the flies sampled in Florida in 1997 displayed the mitochondrial AAB haplotype and represent a novel introduction of Mediterranean fruit flies into the state. All flies collected in central Florida in 1998 also displayed the AAB haplotype. Microsatellite analysis of these specimens from 1998 detected only alleles that were present in 1997. These results strongly indicate that the 1998 Florida outbreaks were derived from the Florida populations from the previous year. According to our analyses, the Mediterranean region is the most likely source for the 1997 Florida infestation. Flies from a small outbreak in Miami Springs, Dade County, FL, early in 1998 had a different mtDNA haplotype, characterized by the AAC restriction pattern. Microsatellites of these specimens showed significant differences in their allelic distribution from AAB flies, indicating an origin from a separate source population. South America is the most likely source for the Miami Springs flies.

Alleles↗
PubMed1995

Spread of Aedes albopictus and decline of Ae. aegypti (Diptera: Culicidae) in Florida.

Waste tires and other types of artificial containers were sampled for immature Aedes to monitor changes in the occurrence of Aedes aegypti (L.) and Aedes albopictus (Skuse) in Florida. The initial invasion and spread of Ae. albopictus in Florida occurred in the northern part of Florida. Throughout this region, major declines in the abundance of Ae. aegypti have been associated with the expansion of Ae. albopictus in both urban and rural areas. Generally, the same results have occurred in central Florida, but at some urban locations Ae. aegypti has remained a common mosquito long after the arrival of Ae. albopictus. In southeastern Florida, Ae. aegypti is currently the dominant container-inhabiting Aedes in urban areas, whereas sites dominated by Ae. albopictus are in rural settings or in undeveloped tracts of land within urban or suburban areas. At some locations, immature Ae. albopictus were found in the same containers with another exotic mosquito, Ae. bahamensis Berlin. The persistence of thriving Ae. aegypti populations in urban areas of southern Florida indicates that Ae. albopictus might not become the dominant container Aedes in these habitats, at least not to the extent that it has in the northern part of the state.

Aedes↗
PubMed2004

Lower adverse event and mortality rates in physician offices compared with ambulatory surgery centers: a reappraisal of Florida adverse event data.

BACKGROUND: A recent study using Florida adverse event data found an increased risk of mortality in offices as opposed to ambulatory surgical centers. A major limitation of Florida adverse event data is the lack of uniform collection of the number of cases performed. OBJECTIVE: The objective was to reassess the risk of mortality from physician office and ambulatory surgical center procedures using improved estimates of the numbers of cases performed in these settings. METHODS: Adverse incident reports from March 2000 to March 2003 were obtained from the Florida Board of Medicine. We used data from the National Ambulatory Medical Care Survey and from the Medicare Current Beneficiary Survey to estimate the number of office procedures in Florida for both the general and the Medicare populations. The number of procedures performed and the number of deaths in ambulatory surgical centers was obtained from the Florida Agency of Healthcare Administration for the years 2000 through 2002. These data were used to calculate adverse event and mortality rates. RESULTS: For physician offices, the adverse event rates and mortality rates calculated per 100,000 procedures from National Ambulatory Medical Care Survey data were 2.1 and 0.41, respectively, and 0.24 and 0.10 using Medicare Current Beneficiary Survey data. For ambulatory surgical centers, the mean adverse event rate was 4.4 and the mean mortality rate was 0.90. DISCUSSION: Florida's adverse event data do not show higher adverse event rates in physician offices compared with ambulatory surgical centers. Incident reporting and public availability of incidents are important, as is standardization of reporting rules for both adverse events and number of procedures performed in different settings.

Ambulatory Surgical Procedures↗
PubMed2004

Hepatozoon sauritus: a polytopic hemogregarine of three genera and four species of snakes in north Florida, with specific identity verified from genome analysis.

Hemogregarines from Thamnophis s. sirtalis, Coluber constrictor priapus, Elaphe obsoleta quadrivittata, and E. g. guttara in northern Florida appeared to be conspecific on the basis of similar gamonts from all the hosts and sporogonic stages obtained from 3 hosts. The resemblance of gamonts to those of Hepatozoon sauritus, described from T. sauritus sackenii in southern Florida, justified comparison of DNA isolates from the type infection of H. sauritus with samples from each of the northern Florida hosts and with a morphologically distinct species, H. sirtalis, from northern Florida. A nucleotide sequence (530 bp) alignment of the 18S ribosomal RNA gene revealed 2 hemogregarine haplotypes that varied at 15 sites (p distance = 2.8%), which included 10 transitions and 5 transversions. Two well-supported clusters (100% bootstrap support) were revealed by a neighbor-joining tree topology. One cluster included the type infection of H. sauritus and all 4 of the other samples from the northern Florida hosts, with samples of H. sirtalis comprising a second cluster. Hepatozoon sauritus, therefore, is a polytopic species in contrast to the 8 other Hepatozoon species thus far described from snakes in Florida, each of which appears to parasitize a single host species.

Animals↗
PubMed1988

Human infections with Tensaw virus in south Florida: evidence that Tensaw virus subtypes stimulate the production of antibodies reactive with closely related Bunyamwera serogroup viruses.

Maguari virus, a member of the Bunyamwera serogroup (family Bunyaviridae, genus Bunyavirus) has not been isolated north of Trinidad. Anecdotal information from other investigators has indicated the presence of antibody to Maguari virus in human residents of south Florida. We attributed such antibody to either cross-reactivity with Tensaw virus, the only Bunyamwera serogroup virus known in south Florida, or to cross-reactivity to an antigenic subtype or variant of Tensaw virus. Five strains, identified as Tensaw virus when they were isolated from mosquitoes collected in south Florida more than 20 years ago, were retrieved from storage. They were compared by serum dilution-plaque reduction neutralization tests with Bunyamwera serogroup prototypes Tensaw, Maguari, Cache Valley, and Tlacotalpan viruses. The south Florida isolates were shown to be most closely related to prototype Tensaw virus and most distantly related to prototype Maguari virus. One isolate could not be distinguished from prototype Tensaw virus, and the other 4 appeared to be subtypes of prototype Tensaw virus. More than 300 serum samples from humans in south Florida were tested for neutralizing antibody to prototypes Tensaw and Maguari viruses and to 3 of the field isolates. Thirteen had antibody to prototype Tensaw virus only, 19 to prototype Maguari virus only, and 39 to both. Antibody to all but 6 of these 71 was attributed to infection with Tensaw virus, to a subtype of Tensaw virus, or to travel or birth outside the United States. It is likely that those with antibody to Maguari virus only had been infected with yet another subtype of Tensaw virus, although another, undiscovered, Bunyamwera serogroup virus may exist in south Florida.

Animals↗
PubMed2005

Distribution of chelonid fibropapillomatosis-associated herpesvirus variants in Florida: molecular genetic evidence for infection of turtles following recruitment to neritic developmental habitats.

Marine turtle fibropapillomatosis is associated with chelonid fibropapilloma-associated herpesvirus (C-FP-HV) and commonly affects juvenile green turtles (Chelonia mydas) in neritic (nearshore) habitats. Green turtles have a complex life history, characterized by shifts in trophic level as well as habitat during ontogeny. Thus, several hypotheses can be proposed for when turtles become infected with C-FP-HV. They may acquire the virus at an early stage in the life cycle, including prenatal, hatchling, or the posthatchling pelagic stages. Alternatively, they may become infected later in life after they emigrate from the open ocean to neritic habitats. Each hypothesis generates predictions about the spatial distribution of genetic variants of C-FP-HV among nearshore sites within a region. Sequencing of polymerase chain reaction-amplified viral DNA from fibropapillomas of individual turtles was used to genotype the viral variants present in marine turtles from different coastal areas in Florida. We found four distinct virus variants (A, B, C, and D), two of which (A and C) were present in multiple turtle species. Green turtles in Florida were infected with variants A, B, and C. Variant A was found in green turtles from all three areas. Outside the Indian River Lagoon, variant A was most commonly detected and was found in >94% of diseased green turtles and 70% of loggerhead sea turtles (Caretta caretta) in the Florida Bay/Florida Keys. However, in the Indian River Lagoon, variant B was found in >94% of affected green turtles. Variant B was not detected outside of the Indian River system. Chi-square analysis strongly supported (P<0.001) an association between viral variant distribution in green turtles and location. On the basis of the assumption that juvenile green turtles found in Florida's west-central coast, Florida Keys, and Indian River Lagoon areas represented recruits from a mixed pelagic population, we expected that the distribution of viral variants in these turtles would be relatively homogeneous among locations; this would correspond to infection in the earlier phases of their life cycle. The heterogeneous distribution of viral variants in green turtle tumors from different Florida coastal locations strongly supports the hypothesis that, during epizootics, turtles are infected with specific C-FP-HV variants after they arrive as juveniles in neritic habitats. The conclusion that C-FP-HV is acquired after turtles recruit to nearshore habitats should help focus further research efforts on understanding the mechanisms of transmission and raises the possibility that the effect of fibropapillomatosis on turtle populations might be reduced by management strategies designed to break the cycle of transmission in these locations.

Animals↗
PubMed2001

The use of macrophyte-based systems for phosphorus removal: an overview of 25 years of research and operational results in Florida.

Phosphorus (P) removal from wastewaters and surface runoff using macrophyte-based systems (MBS) has been a topic of great interest in Florida for over 25 years. During this period, P removal by both treatment wetlands and floating aquatic macrophyte systems has been evaluated from both a research and operational standpoint. Several factors have contributed to the increased focus on the use of MBS for P removal. First, there exist no conventional technologies that can cost-effectively achieve the low outflow P concentrations required to protect the integrity of Florida's relatively pristine surface waters. Second, because MBSs typically provide some water storage, they can accommodate the wide ranges of flows typical for runoff sources such as agricultural drainage waters. Finally, many regions in Florida have sufficient area for deployment of the relatively land-intensive MBS technologies. The first P removal work in Florida was initiated in the mid-1970s, and involved pilot-scale research on domestic wastewater treatment by natural wetlands. Parallel studies were performed with managed (periodically harvested) floating plant systems (i.e., Eichhornia crassipes) for tertiary treatment. Since that time, the range of operational systems that have been deployed include emergent macrophyte-based and forested wetlands, managed floating plant systems, and submerged macrophyte-based systems. Waters treated by MBS include domestic effluents, agricultural runoff and eutrophic lake waters. Phosphorus removal targets for MBS in Florida have been as low as 10 microg/L. In this paper, we summarize research and operational results for MBS in Florida over the past 25 years.

Biodegradation, Environmental↗