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Articles 61 - 90 of 260
Full-Text Articles in Physical Sciences and Mathematics
Water-Rock Interactions And Seasonal Hydrologic Processes In Constructed Everglades Tree Islands, Andres E. Prieto Estrada
Water-Rock Interactions And Seasonal Hydrologic Processes In Constructed Everglades Tree Islands, Andres E. Prieto Estrada
FIU Electronic Theses and Dissertations
The decline of tree islands in the freshwater-Everglades wetland because of hydrologic manipulation, has compromised valuable ecosystem services. Although the role of tree islands in maintaining freshwater quality stems largely from evapotranspiration processes, fundamental questions remain about the effects of different geologic materials on their hydrogeochemical functioning. To reduce this uncertainty, the lithological composition of a set of man-made tree islands was investigated coupled with long-term hydrologic and hydrochemical data. Key results indicate that limestone substrates and peat substrates with elevated proportions of sand, facilitated surface water-groundwater interactions and mineral dissolution. However, limestone-based islands were more effective in lowering the …
Analyzing Spatial Variability Of Social Preference For The Everglades Restoration In The Face Of Climate Change, Abu Hena Mustafa Kamal Sikder
Analyzing Spatial Variability Of Social Preference For The Everglades Restoration In The Face Of Climate Change, Abu Hena Mustafa Kamal Sikder
FIU Electronic Theses and Dissertations
The South Florida Everglades is a unique ecosystem. Intensive water management in the system has facilitated agricultural, urban, and economic development. The Everglades offers a variety of ecosystem services (ES) to the people living in this region. Nevertheless, the ecosystem is under imminent threat of climate change, which would alter the way water is managed today and ultimately affect the ES offered by the system. On the other hand, substantial restoration is underway that aims to restore the Everglades closer to its historic condition. This research tried to map the public’s preference for Everglades restoration. Using a geocoded discrete-choice survey …
A Study On Residents' Perceptions And Attitudes Towards The Vieques National Wildlife Refuge In Puerto Rico, Ana C. Guzman
A Study On Residents' Perceptions And Attitudes Towards The Vieques National Wildlife Refuge In Puerto Rico, Ana C. Guzman
FIU Electronic Theses and Dissertations
Conflicts between local people and protected areas can undermine conservation goals. This study explores perceptions towards Vieques National Wildlife Refuge (VNWR), a complex former military site containing a combination of high ecological value along with an array of unexploded ordnances. The purpose of this research is to evaluate how residents perceive VNWR and elucidate conflicts associated with former and current uses of the wildlife refuge. Here, I interviewed 235 residents of Vieques Island, Puerto Rico using semi-structured surveys and 33 key informants representing various stakeholder groups to assess attitudes toward VNWR.
A combination of factors influencing attitudes about VNWR included …
Eyes Team, Students Present On Slr Work, Robert E. Gutsche Jr.
Eyes Team, Students Present On Slr Work, Robert E. Gutsche Jr.
Sea Level Rise Collection
SJMC faculty members Susan Jacobson, Juliet Pinto, Kate MacMillin, and Ted Gutsche presented the work of their students, FIU faculty, and local community members to a group of the university’s leading sea level rise researchers and communicators. The “All Hands” meeting was hosted by FIU’s Sea Level Solutions Center.
Potential Effects Of Chemical Contamination On South Florida Bonefish Albula Vulpes, Christine P. Beck
Potential Effects Of Chemical Contamination On South Florida Bonefish Albula Vulpes, Christine P. Beck
FIU Electronic Theses and Dissertations
An ecological risk assessment was conducted on the risk to fish of chemical contaminants detected in the habitat of Albula vulpes in South Florida, to evaluate whether contaminants may be a driver of declines in the recreational bonefish fishery. All available contaminant detection data from Biscayne Bay, Florida Bay, and the Florida Keys were compared to federal and state guidelines for aquatic health to identify Contaminants of Potential Ecological Concern (COPECS). For these COPECs, species sensitivity distributions were constructed and compared with recent detections at the 90th centile of exposure. Copper in Biscayne Bay was identified as the highest …
Paris Talks: Geography & Community, Juliet Pinto
Paris Talks: Geography & Community, Juliet Pinto
Sea Level Rise Collection
No abstract provided.
Paris Talks: Energizing Cognitive Dissonance, Juliet Pinto
Paris Talks: Energizing Cognitive Dissonance, Juliet Pinto
Sea Level Rise Collection
No abstract provided.
Paris Talks: A Tale Of Two Narratives, Juliet Pinto
Paris Talks: A Tale Of Two Narratives, Juliet Pinto
Sea Level Rise Collection
No abstract provided.
Paris Talks: What's Resilience?, Phaedra Pezzullo
Paris Talks: What's Resilience?, Phaedra Pezzullo
Sea Level Rise Collection
No abstract provided.
Paris Talks: Acronyms, Actions & Akon, Juliet Pinto
Paris Talks: Acronyms, Actions & Akon, Juliet Pinto
Sea Level Rise Collection
No abstract provided.
Paris Talks: Engage With The Environment, Juliet Pinto
Paris Talks: Engage With The Environment, Juliet Pinto
Sea Level Rise Collection
No abstract provided.
Paris Talks: Local - Global Issues, Juliet Pinto
Paris Talks: Local - Global Issues, Juliet Pinto
Sea Level Rise Collection
No abstract provided.
Paris Talks: Trials Of Climate Advocacy, Phaedra Pezzullo
Paris Talks: Trials Of Climate Advocacy, Phaedra Pezzullo
Sea Level Rise Collection
No abstract provided.
Effects Of Control Release Fertilizers On Nutrient Leaching, Palm Growth And Production Cost, Pushpa Soti, Angie Fleurissaint, Stewart Reed, Krish Jayachandran
Effects Of Control Release Fertilizers On Nutrient Leaching, Palm Growth And Production Cost, Pushpa Soti, Angie Fleurissaint, Stewart Reed, Krish Jayachandran
Department of Earth and Environment
Objective of this study was to evaluate the effect of different controlled release fertilizer technologies on nutrient leaching and plant growth parameters of two palm species, Chinese Fan (Livistona chinensis) and Queen (Syagrus romanzoffiana). We compared Nutri-Pak (12-4-12 controlled release packet) and Harrell’s (12-4-12 controlled release polymer coated urea) against Atlantic (8-4-12 controlled release polymer coated urea, coated sulfate of potash), the most commonly used palm fertilizer in South Florida. Plants were grown in 25 cm (11 L) pots under 70% shade, watered weekly, with pest and weed control done as required. Plant growth parameters: number of leaves, leaf length …
Eyes Represents At Un, French Meetings, Robert E. Gutsche Jr.
Eyes Represents At Un, French Meetings, Robert E. Gutsche Jr.
Sea Level Rise Collection
Announcing
"Eyes member Juliet Pinto has been selected to be part of the International Environmental Communication Association’s (IECA’s) Climate Negotiations Working Group at the 21st session of the Conference of the Parties to the United Nations Framework Convention on Climate Change (COP21) in Paris in November."
Models Describing The Sea Level Rise In Key West, Florida, Karm-Ervin Jean
Models Describing The Sea Level Rise In Key West, Florida, Karm-Ervin Jean
FIU Electronic Theses and Dissertations
Lately, we have been noticing an unusual rise in the sea level near many Floridian cities. By 2060, scientists believe that the sea level in the city of Key West will reach between 22.86 to 60.96 centimeters (Strauss et al. 2012). The consequences of sea level rise are unpleasant by gradually tearing away our beaches and natural resources, destroying our homes and businesses, etc. Definitively, a continual increase of the sea level will affect everyone either directly or indirectly.
In this study, the sea level measurements of four Floridian coastal cities (including Key West) are collected in order to describe …
Gaseous Carbon Emissions (Methane And Carbon Dioxide) From Wetland Soils In A Re-Created Everglades Landscape, Bradley R. Schonhoff
Gaseous Carbon Emissions (Methane And Carbon Dioxide) From Wetland Soils In A Re-Created Everglades Landscape, Bradley R. Schonhoff
FIU Electronic Theses and Dissertations
Reducing the rates of greenhouse gas (GHG) emissions is critical in combatting global climate change. Carbon dioxide (CO2) and methane (CH4) are the two most important carbon-based GHGs, for their atmospheric warming potential. Wetlands such as the Florida Everglades play major roles in the global carbon cycle, as varying hydrologic conditions lead to differential production rates of these two GHGs. This study measured CO2 and CH4 emissions in a re-created Everglades ridge-and-slough wetland, where water levels were controlled to reflect natural flood patterns. As expected, lower elevations were flooded longer and produced more CH …
The Effect Of Disturbance And Freshwater Availability On Lower Florida Keys’ Coastal Forest Dynamics, Danielle E. Ogurcak
The Effect Of Disturbance And Freshwater Availability On Lower Florida Keys’ Coastal Forest Dynamics, Danielle E. Ogurcak
FIU Electronic Theses and Dissertations
Coastal forest retreat in the Florida Keys during the 20th century has been attributed to a combination of sea level rise and hurricane storm surge impacts, but the interactions between these two disturbances leading to forest decline are not well understood. The goal of my research was to assess their effects over a period spanning more than two decades, and to examine the relationships between these press and pulse disturbances and freshwater availability in pine rockland, hardwood hammock, and supratidal scrub communities. Impacts and recovery from two storm surges, Hurricanes Georges (1998) and Wilma (2005), were assessed with satellite-derived …
Modeling A Phosphorus Credit Trading Program In The Lake Okeechobee Watershed, Juliana Corrales
Modeling A Phosphorus Credit Trading Program In The Lake Okeechobee Watershed, Juliana Corrales
FIU Electronic Theses and Dissertations
Lake Okeechobee is the largest lake in the southeastern United States and is a central component of the hydrology and environment of the Everglades ecosystem in South Florida. The natural state of the lake has been degraded as wetlands and natural habitats in the Lake Okeechobee watershed have been replaced with farms, urban areas, and dairy operations. Excessive phosphorus loadings from these diverse sources have been identified as the leading causes of the lake’s impairment. For more than four decades, many resources have been allocated to regional and local restoration efforts to reduce phosphorus loadings into the lake. However, phosphorus …
Effect Of Yangtze River On Population Genetic Structure Of The Relict Plant Parrotia Subaequalis In Eastern Chin, Qifang Geng, Zhingang Yao, Jie Yang, Jia He, Danbi Wong, Zhongsheng Wang, H. Liu
Effect Of Yangtze River On Population Genetic Structure Of The Relict Plant Parrotia Subaequalis In Eastern Chin, Qifang Geng, Zhingang Yao, Jie Yang, Jia He, Danbi Wong, Zhongsheng Wang, H. Liu
Department of Earth and Environment
Parrotia subaequalis (Hamamelidaceae) is a Tertiary relic species endemic in eastern China. We used inter-simple sequence repeat (ISSR) markers to access genetic diversity and population genetic structure in natural five populations of P. subaequalis. The levels of genetic diversity were higher at species level (H = 0.2031) but lower at population level (H = 0.1096). The higher genetic diversity at species levels might be attributed to the accumulation of distinctive genotypes which adapted to the different habitats after Quaternary glaciations. Meanwhile, founder effects on the early stage, and subsequent bottleneck of population regeneration due to its biological characteristics, environmental features, …
Mangiferin As A Biomarker For Mango Anthracnose Resistance, Herma Pierre
Mangiferin As A Biomarker For Mango Anthracnose Resistance, Herma Pierre
FIU Electronic Theses and Dissertations
Mangos (Mangifera indica L.) are tropical/subtropical fruits belonging to the plant family Anacardiaceae. Anthracnose is the most deleterious disease of mango both in the field and during postharvest handling. It is most commonly caused by the Colletotrichum gloeosporioides complex. Mangiferin, a xanthanoid compound found in at least twelve plant families worldwide (Luo et al., 2012), is present in large amounts of the leaves and edible mangos. Even though this compound plays a pivotal role in the plant’s defense against biotic and abiotic stressors, no correlations been made between the compound and mango anthracnose resistance.
Mangos were collected, grouped …
Challenge Fund For Innovation In Journalism Education Final Report [Sea Level Rise, South Florida], Robert E. Gutsche Jr., Susan Jacobson, Kate Macmillin, Juliet Pinto
Challenge Fund For Innovation In Journalism Education Final Report [Sea Level Rise, South Florida], Robert E. Gutsche Jr., Susan Jacobson, Kate Macmillin, Juliet Pinto
Sea Level Rise Collection
No abstract provided.
It Takes A Village To Build A Sea Level Rise App: Civic Hacking As An Approach To Informing Citizens About Sea Level Rise In Miami, Susan Jacobson, Juliet Pinto, Robert E. Gutsche Jr., Kate Macmillin, Jennifer Fu
It Takes A Village To Build A Sea Level Rise App: Civic Hacking As An Approach To Informing Citizens About Sea Level Rise In Miami, Susan Jacobson, Juliet Pinto, Robert E. Gutsche Jr., Kate Macmillin, Jennifer Fu
Sea Level Rise Collection
No abstract provided.
Hydrologic Controls Of Coastal Groundwater Discharge In Southern Taylor Slough, Everglades National Park, Florida, Edward Linden
Hydrologic Controls Of Coastal Groundwater Discharge In Southern Taylor Slough, Everglades National Park, Florida, Edward Linden
FIU Electronic Theses and Dissertations
This project empirically determined the controls of groundwater discharge potential and surface water chemistry in southern Taylor Slough, Everglades National Park, Florida. Potential for groundwater discharge was calculated as the difference in equivalent freshwater stage between groundwater and surface water on a daily basis for two sites (upland and coastal) along southern Taylor Slough. Upstream water stages were shown to vary most similarly to the timing of groundwater discharge potential in coastal Taylor Slough. Surface water major ion chemistry did not apparently change as a result of groundwater discharge potential. Surface water major ion chemistry at the coastal site was …
Understanding The Challenges Of Expanding Community Forestry In Northwest Cameroon, Caitlin M. Farnung
Understanding The Challenges Of Expanding Community Forestry In Northwest Cameroon, Caitlin M. Farnung
FIU Electronic Theses and Dissertations
The tropical afro-montane forest of the Northwest region is unique and under direct threat from the high population density of the region. Community-based forestry management is an opportunity to sustainably manage the remaining forest fragments.
Community forestry was introduced to Cameroon with the legislation of the 1994 Forestry Law. Over two decades later little research has been conducted in the Northwest region of Cameroon. Twenty-four semi-structured interviews were conducted, and samples of forestry records were analyzed as exploratory research that would act as a base for further research.
This research found that the tenure of the community over the community …
A Spatial And Temporal Analysis Of Land Use And Water Quality In Southern Miami Dade County, Mario Londono
A Spatial And Temporal Analysis Of Land Use And Water Quality In Southern Miami Dade County, Mario Londono
FIU Electronic Theses and Dissertations
This thesis research employs a multi-pronged analysis approach to contribute to the existing knowledge regarding land use and water quality in southern Miami Dade County. Nutrient concentrations for TP, NOx-N, and NH3-N were evaluated for water quality monitoring stations across seven canals for two time periods: 1990-2003 and 2009-2014. Overall, the sites did not surpass the mandated TP threshold but a number of sites exceeded the NOx-N and NH3-N criteria set by multiple government agencies. Statistical tests demonstrated that the sites had differing distributions, not sharing similar median concentrations. Land use classifications were derived for the area interest for the …
Sustainability Analysis Of Domestic Rainwater Harvesting Systems For Current And Future Water Security In Rural Mexico, Elena E. Neibaur
Sustainability Analysis Of Domestic Rainwater Harvesting Systems For Current And Future Water Security In Rural Mexico, Elena E. Neibaur
FIU Electronic Theses and Dissertations
Rainwater harvesting, the act of capturing and storing rain, is an ancient practice that is increasingly utilized today by communities to address water supply needs. This thesis examines whether domestic rainwater harvesting systems (DRWHS) can be a sustainable solution as defined by social, water quality, and technical feasibility for water security in semi-arid, rural environments. For this study, 50 surveys and 17 stored rainwater analyses were conducted in San Jose Xacxamayo, Mexico, in conjunction with my Peace Corps work of implementing 82 DRWHS. Results showed that all DRWHS were socially feasible because of cultural acceptance and local capacity. Water quality …
Flow Regime Classification And Hydrological Characterization: A Case Study Of Ethiopian Rivers, Belete Berhanu, Yilma Seleshi, Solomon S. Demisse, Assefa M. Melesse
Flow Regime Classification And Hydrological Characterization: A Case Study Of Ethiopian Rivers, Belete Berhanu, Yilma Seleshi, Solomon S. Demisse, Assefa M. Melesse
Department of Earth and Environment
The spatiotemporal variability of a stream flow due to the complex interaction of catchment attributes and rainfall induce complexity in hydrology. Researchers have been trying to address this complexity with a number of approaches; river flow regime is one of them. The flow regime can be quantified by means of hydrological indices characterizing five components: magnitude, frequency, duration, timing, and rate of change of flow. Similarly, this study aimed to understand the flow variability of Ethiopian Rivers using the observed daily flow data from 208 gauging stations in the country. With this process, the Hierarchical Ward Clustering method was implemented …
Evaluation Of Crop Seed Powders As Amendments For Purple Nutsedge (Cyperus Rotundus) Control Compared To The Traditional Herbicide, Roundup, Eric Taylor Betancourt
Evaluation Of Crop Seed Powders As Amendments For Purple Nutsedge (Cyperus Rotundus) Control Compared To The Traditional Herbicide, Roundup, Eric Taylor Betancourt
FIU Electronic Theses and Dissertations
Purple nutsedge (Cyperus rotundus) is a troublesome weed that outcompetes crops and contributes to poor yields. In the past, agriculturalists controlled purple nutsedge by fumigating soil with methyl bromide but the fumigant has since been classified as a controlled substance under the Montreal Protocol. This study evaluated the effectiveness of several alternative purple nutsedge control techniques and compared them with results obtained from the application of Roundup. Concentration treatment effects for the allelopathic seed powders of watercress and turnip were tested in a field trial while seed powders of yellow mustard and sunflower were tested in a potted …
Eyes Initiative Leads To Summer Camp, Robert E. Gutsche Jr.
Eyes Initiative Leads To Summer Camp, Robert E. Gutsche Jr.
Sea Level Rise Collection
Description of summer camp program for STEM students at the FIU Biscayne Bay Campus.