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University of South Florida

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2006

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Factores De Sesgo Asociados A La Validez De La Evaluación Docente Universitaria: Un Modelo Jerárquico Lineal, Raziel Acevedo Álvarez, Nuria Mairena Rodríguez Dec 2006

Factores De Sesgo Asociados A La Validez De La Evaluación Docente Universitaria: Un Modelo Jerárquico Lineal, Raziel Acevedo Álvarez, Nuria Mairena Rodríguez

Education Policy Analysis Archives (EPAA)

The present study analyzes the variables that are intrinsically linked with the student, professor and class environment in relation to the university educational evaluation questionnaires. The participants in the study were 374 students with an age mean of 19.9 and 29 professors with an age mean of 36 from 3 different departments at the Universidad de Costa Rica (UCR) at the city of Guanacaste. The hierarchical lineal models were used for the data analysis, a quantitative methodology which facilitates the evaluation of the determinants which affect the results of the study. However, only four of these determinants were associated with …

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The Weekly Challenger : 2006 : 12 : 28, The Weekly Challenger, Et Al Dec 2006

The Weekly Challenger : 2006 : 12 : 28, The Weekly Challenger, Et Al

Newspaper collection

No abstract provided.

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The Weekly Challenger : 2006 : 12 : 21, The Weekly Challenger, Et Al Dec 2006

The Weekly Challenger : 2006 : 12 : 21, The Weekly Challenger, Et Al

Newspaper collection

No abstract provided.

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Sbe Notícias, Ano 1, No. 36, December 21, 2006, Marcelo A. Rasteiro, Barbara E.P.F. Rodrigues Dec 2006

Sbe Notícias, Ano 1, No. 36, December 21, 2006, Marcelo A. Rasteiro, Barbara E.P.F. Rodrigues

SBE Notícias

III Jornada Brasil-Espanha de Espéleo-Vertical - Ante projeto propõe mosaico de unidades de conservação no Vale do Ribeira em SP - Acidente fatal em caverna do México - Comissão rejeita Projeto de Lei sobre o patrimônio espeleológico - Quilombolas do Vale do Ribeira lançam site.

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Commencement Convocation Program, St. Petersburg Campus, December 17, 2006, University Of South Florida Dec 2006

Commencement Convocation Program, St. Petersburg Campus, December 17, 2006, University Of South Florida

USF Graduation and Convocation Programs

Regional Chancellor's Award for Civic Leadership - Frances L. Stavros

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Commencement Convocation Program, Tampa Campus, December 16, 2006, University Of South Florida Dec 2006

Commencement Convocation Program, Tampa Campus, December 16, 2006, University Of South Florida

USF Graduation and Convocation Programs

King O'Neal Scholars - Nicole Elizabeth Abong, M. Bryan Blaise, Whitney Lyn McGinniss, Jaclyn M. Poliseo, Adriana Lydia Shoaf, and Sydnie Gray Zillig; Outstanding Senior - M. Bryan Blaise; Honorary Doctor of Education - Dr. Braulio Alonso; President's Fellow Medallion - Tong Ki Woo; Global Leadership Award - Nava Ben-Zvi; Distinguished Citizen Award - Lesley "Les" Miller

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Comparison Of The Enrollment Percentages Of Magnet And Non-Magnet Schools In A Large Urban School District, Emily Arcia Dec 2006

Comparison Of The Enrollment Percentages Of Magnet And Non-Magnet Schools In A Large Urban School District, Emily Arcia

Education Policy Analysis Archives (EPAA)

Are magnet schools in a position to meet diversity ideals? As districts are declaredunitary and released from court ordered desegregation, many are framing their commitments to fairness and equity in terms of diversity—i.e., comparable rates of participation and comparable educational outcomes in all segments the student population. In this study, the enrollment statistics for magnet and contiguous non-magnet public schools in Miami-Dade County Public Schools, a large, urban district that had been released from court ordered desegregation, were compared to each other and to district enrollment averages at two time points: the year the district was declared unitary and four …

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Commencement Convocation Program, Lakeland Campus, December 15, 2006, University Of South Florida Dec 2006

Commencement Convocation Program, Lakeland Campus, December 15, 2006, University Of South Florida

USF Graduation and Convocation Programs

Outstanding Senior - Justin Chantnicki; USF Lakeland Distinguished Service Award - John Ramil

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Disparo En Red, December 14, 2006, Disparo En Red Dec 2006

Disparo En Red, December 14, 2006, Disparo En Red

Disparo en Red (Cuban science fiction magazine)

The December 14, 2006, issue of Disparo en Red.

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The Weekly Challenger : 2006 : 12 : 14, The Weekly Challenger, Et Al Dec 2006

The Weekly Challenger : 2006 : 12 : 14, The Weekly Challenger, Et Al

Newspaper collection

No abstract provided.

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Sbe Notícias, Ano 1, No. 35, December 11, 2006, Marcelo A. Rasteiro, Barbara E.P.F. Rodrigues Dec 2006

Sbe Notícias, Ano 1, No. 35, December 11, 2006, Marcelo A. Rasteiro, Barbara E.P.F. Rodrigues

SBE Notícias

Biblioteca da SBE recebe doação do acervo pessoal de Guy Collet - 29º Congresso Brasileiro de Espeleologia - Prorrogado o prazo para envio de resumos ao 5º CEALC - 15º Congresso Internacional de Espeleologia - 4ª Expedição SBE-TO - Mulher ajudou a humanidade a evoluir - Suposto elo perdido é beco sem saída

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The Weekly Challenger : 2006 : 12 : 07, The Weekly Challenger, Et Al Dec 2006

The Weekly Challenger : 2006 : 12 : 07, The Weekly Challenger, Et Al

Newspaper collection

No abstract provided.

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Crow's Nest : 2006 : 12 : 05, University Of South Florida St. Petersburg. Dec 2006

Crow's Nest : 2006 : 12 : 05, University Of South Florida St. Petersburg.

Crow's Nest

(Vol. 39, No. 14).

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Qubit, December 2006 Dec 2006

Qubit, December 2006

Qubit (Cuban science fiction magazine)

The December 2006 issue of the Qubit.

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Cave Talk, December 2006, Susan Berdeaux Dec 2006

Cave Talk, December 2006, Susan Berdeaux

Cave Talk

No abstract provided.

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Discrimination Of Aposematic And Novel Prey By Mature Sceloporus Malachiticus, December 2006, Jeff Masterson Dec 2006

Discrimination Of Aposematic And Novel Prey By Mature Sceloporus Malachiticus, December 2006, Jeff Masterson

Tropical Ecology and Conservation [Monteverde Institute]

Prey use a variety of defenses against predators in order to avoid predation and often use warning coloration known as aposematism to advertise unpalatability to predators. Predators have accordingly evolved defenses against possibly unpalatable prey by being selective, and avoiding aposematically colored prey items. Some predators are more selective, avoiding anything appearing novel (neophobia), thus lowering the risk of unprofitable foraging by restricting their diet to familiar items. Previous studies have shown that neonatal Sceloporus malachiticus will innately avoid aposematic prey. In this experiment I examined any potential changes in prey selection concerning aposematic or novel prey items in S. …

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Maternal Defensive Behavior Of Umbonia Ataliba Treehoppers, December 2006, Sarah Anvik Dec 2006

Maternal Defensive Behavior Of Umbonia Ataliba Treehoppers, December 2006, Sarah Anvik

Tropical Ecology and Conservation [Monteverde Institute]

A population of Umbonia ataliba (Homoptera: Membracidae) located between 1300 and 1500 m in Monteverde, Costa Rica was studied from October to November 2006. The maternal defensive behavior exhibited by these subsocial insects toward nymphs of different developmental stages was experimentally investigated. The purpose of my study was to determine how the defensive behavior changed from eggs to adults and in response to two different predator types. I attached dead wasps to long wooden sticks and then simulated predator approaches toward family groups of eggs, second instar and fourth instars nymphs. I found that the defensive behavior by females guarding …

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Territorial Response Of Rufous-And-White Wrens (Thryothorus Rufalbus) To Neighbor/Stranger Conspecific Playbacks, December 2006, Kaitlin Dunn Dec 2006

Territorial Response Of Rufous-And-White Wrens (Thryothorus Rufalbus) To Neighbor/Stranger Conspecific Playbacks, December 2006, Kaitlin Dunn

Tropical Ecology and Conservation [Monteverde Institute]

I tested the Rufous-and-white Wren (T. rufalbus) for discrimination between the songs of neighbor and stranger conspecifics. I found significant differences in behavioral responses between the song playbacks of neighboring and unfamiliar conspecifics in seventeen pairs of the Rufous-and-white Wren. Birds sang for longer periods and sang more songs in response to playbacks of strangers. However, the amount that they approached the playback source did not differ between the song types. These results suggest that Rufous-and-white wrens recognize the songs of neighbors and identify the individuals as less threatening than strangers. This diminished response may be an adaptive strategy to …

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The Effect Of Wing Color On Heliconius Melpomene Mating Behavior And Its Implications On The Evolution Of Mimicry, December 2006, Ellen Thompson Dec 2006

The Effect Of Wing Color On Heliconius Melpomene Mating Behavior And Its Implications On The Evolution Of Mimicry, December 2006, Ellen Thompson

Tropical Ecology and Conservation [Monteverde Institute]

Wing color is important to butterflies both for social signals and protection from predators. Butterflies gain protection from predators by having aposematically colored wings that warn the predator that the butterfly is distasteful. Some butterflies are also part of Mullerian mimicry complexes in which two distasteful species converge on the same color pattern to enhance their aposematic protection. Heliconius erato and Heliconius melpomene are Mullerian mimics that exhibit a wide variety of wing patterns throughout Central and South America. Their wing patterns have greatly diverged within each species, but between the species they are almost perfect mimics in each area. …

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Patch Fidelity Behavior In Coexisting Damselflies: Hetaerina Cruentata (Odonata: Calopterygidae) And Argia Extranea (Odonata: Coenagrionidae), December 2006, Anna C. Peterson Dec 2006

Patch Fidelity Behavior In Coexisting Damselflies: Hetaerina Cruentata (Odonata: Calopterygidae) And Argia Extranea (Odonata: Coenagrionidae), December 2006, Anna C. Peterson

Tropical Ecology and Conservation [Monteverde Institute]

Patch fidelity in coexisting territorial damselfly species, Hetaerina cruentata and Argia extranea was studied to determine if these species displayed differing territorial behavior, which may be one mechanism for niche differentiation of these species. Data such as light amount and proximity to water of the patch sites were gathered to provide information about territorial preferences of these two species. No significant relationships between patch fidelity and patch characteristics were found. A significant difference was seen between the patch fidelity of the two species, implicating territory as a possible niche differentiating mechanism. Possible explanations for the variation in patch fidelity behavior …

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Microorganism Species Richness And Diversity In Elfin Forest Bryophytes, December 2006, Andrew Miller Dec 2006

Microorganism Species Richness And Diversity In Elfin Forest Bryophytes, December 2006, Andrew Miller

Tropical Ecology and Conservation [Monteverde Institute]

The elfin cloud forest in Monteverde, Costa Rica is an area with a species rich bryophyte community that harbors an unexplored community of microscopic organisms. I examined two morphospecies of bryophytes to compare their species richness of microorganisms living in the water the bryophyte holds. The factors that I examined that may affect microorganism’s species richness are pH and structural differences between the bryophyte morphospecies. Bryophyte water samples were collected, pH was measured, and protozoan species were counted and viewed under a compound microscope. Even though there were visible differences in structural complexity between moss morphospecies (longer shoot lengths and …

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Medicinal Plant Use And Knowledge For Monteverde Residents Based On Age And Education, December 2006, Cassandra Gurgiolo Dec 2006

Medicinal Plant Use And Knowledge For Monteverde Residents Based On Age And Education, December 2006, Cassandra Gurgiolo

Tropical Ecology and Conservation [Monteverde Institute]

Approximately 80% of the world population relies on medicinal plants from the forest, home gardens, or market as a primary form of healthcare (Alcorn 1995). However, increased development and deforestation in recent years may be compromising the practice of natural medicine among the inhabitants of many developing countries. Interviews with 33 residents of Monteverde, Cost Rica examine both the current level of knowledge concerning natural medicine and its practice based upon age and educational level. Statistically significant positive linear relationships were found between both utilization and knowledge of medicinal plants and age. Knowledge and utilization of medicinal plants decreased weakly …

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Species Composition Of Bats (Chiroptera) In Different Land- Use Mosaics, December 2006, Samantha Carter Dec 2006

Species Composition Of Bats (Chiroptera) In Different Land- Use Mosaics, December 2006, Samantha Carter

Tropical Ecology and Conservation [Monteverde Institute]

Bats are an abundant and diverse group of species that can be used as indicators of habitat disturbance and to test the effects of land-use mosaics on an ecosystem. For 11 nights I used mist-nets to sample the bat assemblages in pastures, forest fragments, banana fields and coffee fields on the Finca Santamaría in Cañitas, Monteverde, Costa Rica. The differences between the land-use areas were not significant in the abundance of bats, species richness, species diversity or trophic diversity. However the species that were found, such as Glossaphaga commissarisi and Sturnia ludovici could be considered indicators of disturbed habitats suggesting …

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Changes In Bird Species Distribution In Four Altitudinal Zones In Monteverde, Costa Rica, December 2006, Grant Connette Dec 2006

Changes In Bird Species Distribution In Four Altitudinal Zones In Monteverde, Costa Rica, December 2006, Grant Connette

Tropical Ecology and Conservation [Monteverde Institute]

The impact of climate change on ecosystems has been demonstrated by studies of upper elevation amphibians (Pounds 1997). In spite of this, the degree to which climate change affects birds is not as clear. Two previous studies have found the upward movement of many species of birds in the Monteverde area (Donnelly 1998, Palm 2003). I surveyed birds in four altitudinal zones on the less studied Atlantic slope of the Monteverde Cloud Forest Preserve and compared my findings to the bird distributions reported by Michael Fogden in 1993. I found significant upward movement of bird species (sign test, p < 0.05) as well as a general decline in the abundances of certain bird species (x2 = 27.65, df = 3, p < 0.001). The majority of these declines are probably linked to the reforestation of the Peñas Blancas valley but climate change is likely responsible for the upslope movement and increased abundance of higher elevation birds.

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Tropical Pteridophyte Relationships With Mycorrhizal Fungi, December 2006, Katie Heard Dec 2006

Tropical Pteridophyte Relationships With Mycorrhizal Fungi, December 2006, Katie Heard

Tropical Ecology and Conservation [Monteverde Institute]

It is known that pteridophytes have a mutualistic association with mycorrhizal fungi, which play a critical role in the capture of nutrients from the soil, to help with the acquisition of phosphorus and nitrogen, perhaps the most limiting factors for plant growth (Brundett 1983). Few studies have been conducted in the tropics; although there is much descriptive evidence from elsewhere that suggests that mycorrhizal relationships are important (Wagner et al.1983). This study was conducted in the San Luis premontane forest and Monteverde lower montane wet forests in Costa Rica. Twenty-four epiphytic individuals and 20 terrestrial individuals were collected to investigate …

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Soil Organic Matter (Som) In Agroecosystems And Intact Cloud Forest In The Monteverde Area, Costa Rica, December 2006, J. T. Metten Dec 2006

Soil Organic Matter (Som) In Agroecosystems And Intact Cloud Forest In The Monteverde Area, Costa Rica, December 2006, J. T. Metten

Tropical Ecology and Conservation [Monteverde Institute]

Properly managed agroecosystems have great potential for sequestering carbon as Soil Organic Matter (SOM) (Brown et al. 2002; Lal 2005). I measured % SOM, Bulk Density, Total SOM, and Root Biomass in two agroecosystems, forest fragment, and intact cloud forest in Cañitas and Monteverde, Costa Rica. These data were analyzed to see if agroecosystems and forests differ in carbon sequestering ability. I found significant differences in % SOM and Bulk Densities between agroecosystems but when Total SOM was calculated, results were not significant. Analysis on Total SOM alone suggests that agroecosystems and forest in Monteverde have an equal ability to …

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Determining Avian Vulnerability To Ectoparasites Using Morphological And Natural History Traits, December 2006, Lili K. Prahl Dec 2006

Determining Avian Vulnerability To Ectoparasites Using Morphological And Natural History Traits, December 2006, Lili K. Prahl

Tropical Ecology and Conservation [Monteverde Institute]

Avian parasitism is the cause of many negative effects on host organisms including decreased fitness through reproductive failure and reduced health. There is increasing research being done to assess the characteristics of bird host morphology and natural history that influence the presence and abundance of ectoparasites on these hosts. This study attempts to create an index of sensitivity that can be used for different bird species in order to determine their expected vulnerability to ectoparasites. This index uses five parameters: bird weight and bill length, both determined by field work, as well as bird behavior, habitat, and population density. This …

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Blood Parasite Infection In Mice From Cloud Forest And Nearby Disturbed Habitats, December 2006, Jesse A. Blumenstock Dec 2006

Blood Parasite Infection In Mice From Cloud Forest And Nearby Disturbed Habitats, December 2006, Jesse A. Blumenstock

Tropical Ecology and Conservation [Monteverde Institute]

Conversion of habitat by humans is pervasive, increasing, and the root of serious environmental problems. This study was performed to find differences in blood parasite infections of host mice in neotropical cloud forest versus nearby disturbed habitat. In Monteverde, Costa Rica, mice were trapped and examined for blood parasite species richness and abundance in primary forest and disturbed areas near houses. Twenty-eight mice were captured: 15 from the forest and 13 from the disturbed habitats. Eighty-six percent of these mice were of the species Peromyscus nudipes. There was no significant difference of parasite species richness between mice from the forest …

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Fruit Production Frequency As An Indication Of Self-Pollination In Lepanthes Eximia (Orchidaceae: Pleurothallidinae) In Monteverde, Costa Rica, December 2006, Kathryn A. Lulling Dec 2006

Fruit Production Frequency As An Indication Of Self-Pollination In Lepanthes Eximia (Orchidaceae: Pleurothallidinae) In Monteverde, Costa Rica, December 2006, Kathryn A. Lulling

Tropical Ecology and Conservation [Monteverde Institute]

Most orchids are capable of self-pollination, but outcrossing promotes the variation in flower structure and the specificity of pollination mechanisms prevalent in orchids. For this reason there are many elaborate pollination mechanisms involving specific pollinators. Highly specific mechanisms ensure efficient pollination, yet low fruit production is common in orchids and in the genus Lepanthes. An exception to this trend is Lepanthes eximia, which has a relatively high fruit set. This may indicate that L. eximia does not depend on rare pollination events, but self-pollinates, accepting low genetic variability in order to increase its number of offspring. Two groups of L. …

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Microclimate Effects On Cyphellae Density In Sticta Lichens, December 2006, Aidée Casillas Dec 2006

Microclimate Effects On Cyphellae Density In Sticta Lichens, December 2006, Aidée Casillas

Tropical Ecology and Conservation [Monteverde Institute]

The genus Sticta is a dominant lichen in tropical montane rainforest environments that is unique in possessing cyphellae, i.e. depressed pores involved in gas exchange, on the undersides of thalli. Microclimatic parameters such as relative humidity, canopy density and temperature were measured in relation to cyphellae density and colony size of S. filix in the Monteverde Cloud Forest. Significant correlations were found relating canopy density to cyphellae density (R2 = 0.200, p = 0.0007, n = 54), (R2 = 0.213, p = 0.0016, n = 44), colony size to temperature (R2 = 0.239, p = 0.0002, n = 54), (R2 …

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