Validation of a Spatially Continuous EDEN Water-Surface Model for the Everglades, Florida

The Everglades Depth Estimation Network (EDEN) is an integrated network of realtime water-level monitoring, ground-elevation modeling, and water-surface modeling that provides scientists and managers with current (2000-present), online water-stage and water-depth information for the entire freshwater portion of the Greater Everglades. Continuous daily spatial interpolations of the EDEN network stage data are presented on grid with 400-square-meter spacing. EDEN offers a consistent and documented dataset that can be used by scientists and managers to: (1) guide large-scale field operations, (2) integrate hydrologic and ecological responses, and (3) support biological and ecological assessments that measure ecosystem responses to the implementation of the Comprehensive Everglades Restoration Plan (CERP) (U.S. Army Corps of Engineers, 1999). The target users are biologists and ecologists examining trophic level responses to hydrodynamic changes in the Everglades. The first objective of this report is to validate the spatially continuous EDEN water-surface model for the Everglades, Florida developed by Pearlstine et al. (2007) by using an independent field-measured data-set. The second objective is to demonstrate two applications of the EDEN water-surface model: to estimate site-specific ground elevation by using the validated EDEN water-surface model and observed water depth data; and to create water-depth hydrographs for tree islands. We found that there are no statistically significant differences between model-predicted and field-observed water-stage data in both southern Water Conservation Area (WCA) 3A and WCA 3B. Tree island elevations were derived by subtracting field water-depth measurements from the predicted EDEN water-surface. Water-depth hydrographs were then computed by subtracting tree island elevations from the EDEN water stage. Overall, the model is reliable by a root mean square error (RMSE) of 3.31 cm. By region, the RMSE is 2.49 cm and 7.77 cm in WCA 3A and 3B, respectively. This new landscape-scale hydrological model has wide applications for ongoing research and management efforts that are vital to restoration of the Florida Everglades. The accurate, high-resolution hydrological data, generated over broad spatial and temporal scales by the EDEN model, provides a previously missing key to understanding the habitat requirements and linkages among native and invasive populations, including fish, wildlife, wading birds, and plants. The EDEN model is a powerful tool that could be adapted for other ecosystem-scale restoration and management programs worldwide.

Der Letzte der Seminolen : Scenen aus den Kämpfen der Indianer Florida's gegen die Weißen : nebst Rückblick auf die Zustände der Vereinigten Staaten

von Albert von Halfern

AN ANALYSIS OF THE RELATIVE INFLUENCE OF RACE, INCOME, EDUCATION, AND FOOD STAMP PROGRAM PARTICIPATION/NONPARTICIPATION ON THE FOOD AND NUTRIENT CONSUMPTION OF A NORTH FLORIDA URBAN CLINIC POPULATION IN CONJUNCTION WITH A SURVEY OF NUTRITION RELATED HABITS AND ATTITUDES

The relative influence of race, income, education, and Food Stamp Program participation/nonparticipation on the food and nutrient intake of 102 fecund women ages 18-45 years in a Florida urban clinic population was assessed using the technique of multiple regression analysis. Study subgroups were defined by race and Food Stamp Program participation status. Education was found to have the greatest influence on food and nutrient intake. Race was the next most influential factor followed in order by Food Stamp Program participation and income. The combined effect of the four independent variables explained no more than 19 percent of the variance for any of the food and nutrient intake variables. This would indicate that a more complex model of influences is needed if variations in food and nutrient intake are to be fully explained.^ A socioeconomic questionnaire was administered to investigate other factors of influence. The influence of the mother, frequency and type of restaurant dining, and perceptions of food intake and weight were found to be factors deserving further study.^ Dietary data were collected using the 24-hour recall and food frequency checklist. Descriptive dietary findings indicated that iron and calcium were nutrients where adequacy was of concern for all study subgroups. White Food Stamp Program participants had the greatest number of mean nutrient intake values falling below the 1980 Recommended Dietary Allowances (RDAs). When Food Stamp Program participants were contrasted to nonparticipants, mean intakes of six nutrients (kilocalories, calcium, iron, vitamin A, thiamin, and riboflavin) were below the 1980 RDA compared to five mean nutrient intakes (kilocalories, calcium, iron, thiamin and riboflavin) for the nonparticipants. Use of the Index of Nutritional Quality (INQ), however, revealed that the quality of the diet of Food Stamp Program participants per 1000 kilocalories was adequate with exception of calcium and iron. Intakes of these nutrients were also not adequate on a 1000 kilocalorie basis for the nonparticipant group. When mean nutrient intakes of the groups were compared using Student's t-test oleicacid intake was the only significant difference found. Being a nonparticipant in the Food Stamp Program was found to be associated with more frequent consumption of cookies, sweet rolls, doughnuts, and honey. The findings of this study contradict the negative image of the Food Stamp Program participant and emphasize the importance of education. ^

Boedo y Florida en las páginas de Los Pensadores

En la Argentina tuvo lugar entre 1924 y 1930 una polémica literario–política centrada en las revistas Martín Fierro, por un lado y Los Pensadores y Claridad por el otro, referente al objetivo de la literatura y su papel en la sociedad, aspectos que ejemplifican posiciones diferentes frente a lo real, la literatura como tarea y la obra como comunicación y portadora de significado. Los dos grupos intentaron legitimar sus objetivos frente a lo canónico: Florida atacó los modelos modernista, realista y los residuos románticos, y Boedo trató de ampliar la noción de público literario. Sin embargo, la disputa motivó más leyendas que vanguardias. En esta oportunidad nos interesa analizar, desde la perspectiva de la historia de la ideas y centrados en Los Pensadores, la mencionada polémica como expresión propia de la época.

Trayectorias laborales de trabajadores del campo al sur del estado de la Florida en Estados Unidos

El siguiente artículo es la continuación de una investigación mayor y en el se plasman algunas reflexiones sobre el análisis de trayectorias laborales de trabajadores del campo migrantes en áreas de producción agrícola al sur del estado de la Florida en Estados Unidos. Básicamente, en el texto se busca ilustrar sobre las características cambiantes de las trayectorias laborales de los migrantes, al momento de participar en una sociedad diversa y fragmentada laboralmente como la sociedad norteamericana.

Trayectorias laborales de trabajadores del campo al sur del estado de la Florida en Estados Unidos

El siguiente artículo es la continuación de una investigación mayor y en el se plasman algunas reflexiones sobre el análisis de trayectorias laborales de trabajadores del campo migrantes en áreas de producción agrícola al sur del estado de la Florida en Estados Unidos. Básicamente, en el texto se busca ilustrar sobre las características cambiantes de las trayectorias laborales de los migrantes, al momento de participar en una sociedad diversa y fragmentada laboralmente como la sociedad norteamericana.