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Relationships Between Vegetation Characteristics And Soil Erosion In The Rainforest Zone Of Southern Nigeria, Anthony I. Iwara, E E. Ewa, G N. Njar, S O. Maduka 2017 University of Calabar

Relationships Between Vegetation Characteristics And Soil Erosion In The Rainforest Zone Of Southern Nigeria, Anthony I. Iwara, E E. Ewa, G N. Njar, S O. Maduka

Confluence Journal of Environmental Studies (CJES), Kogi State University, Nigeria

This study was carried out to examine the relationships between vegetation characteristics and soil erosion (runoff and sediment loss) in abandoned farmlands of 3-year old, 5-year old, 10-year old and a cultivated farmland in a part of the rainforest zone southern Nigeria. Field measurements of rainfall producing runoff and sediment were carried out from March to November in 2012 rainy and cropping season. Pearson’s correlation result showed that on the cultivated farmland, crown cover positively and significantly correlated with runoff (r = 0.652, p<0.01). The vegetation characteristics measured on the respective fallows jointly explained 53.7, 73 ...


Assessment Of Heavy Metal Sources Across Urban Transportation Facilities In Lagos Metropolis, Nigeria, Olakunle F. Ogundele, I A. Tiamiyu, Anthony I. Iwara 2017 Lagos State University, Ojo, Lagos, Nigeria.

Assessment Of Heavy Metal Sources Across Urban Transportation Facilities In Lagos Metropolis, Nigeria, Olakunle F. Ogundele, I A. Tiamiyu, Anthony I. Iwara

Confluence Journal of Environmental Studies (CJES), Kogi State University, Nigeria

Multivariate statistical tools were employed to identify the sources of heavy metal introduction in soils across urban transportation facilities (roadside, railway, canal, airport, warehouse and bus stop) in Lagos Metropolis, Nigeria. Data for the study was obtained by collecting 30 surface soil samples (0 – 15cm) across 6 transportation facilities. Data obtained was taken to the laboratory for analysis of Cd, Cr, Cu, Fe, Ni, Pb and Zn using Atomic Absorption Spectrophotometer (AAS) technique. Result showed that four principal components (PCA) were identified as responsible for the data structure explaining 83.5% of the total variance in the data set of ...


Comparative Analysis Of Heavy Metal Status In Different Groundwater Sources In Kuje Town, Abuja, Nigeria, Chup C. D, Charles A. Iyanya 2017 University of Abuja, Nigeria

Comparative Analysis Of Heavy Metal Status In Different Groundwater Sources In Kuje Town, Abuja, Nigeria, Chup C. D, Charles A. Iyanya

Confluence Journal of Environmental Studies (CJES), Kogi State University, Nigeria

The study examined heavy metal status of groundwater sources in Kuje Town, Abuja Nigeria. Sixteen (16) groundwater samples were randomly collected from boreholes and wells within the study area and analyzed for 5 heavy metal parameters using standard laboratory procedures Data obtained from the laboratory analysis was analyzed using tables, averages, standard deviation and Independent Samples test. Result showed that the mean values of Manganese (Mn), copper (Cu), zinc (Zn) and iron (Fe) for borehole water were 0.049, 0.118, 0.065 and 0.141mg/l, while those of well water were 0.081, 0.270, 0.100 and ...


Enso Controls Interannual Fire Activity In Southeast Australia, Michela Mariani, Michael-Shawn Fletcher, Andrés Holz, Petter Nyman 2017 University of Melbourne

Enso Controls Interannual Fire Activity In Southeast Australia, Michela Mariani, Michael-Shawn Fletcher, Andrés Holz, Petter Nyman

Andrés Holz

El Niño–Southern Oscillation (ENSO) is the main mode controlling the variability in the ocean-atmosphere system in the South Pacific. While the ENSO influence on rainfall regimes in the South Pacific is well documented, its role in driving spatiotemporal trends in fire activity in this region has not been rigorously investigated. This is particularly the case for the highly flammable and densely populated southeast Australian sector, where ENSO is a major control over climatic variability. Here we conduct the first region-wide analysis of how ENSO controls fire activity in southeast Australia. We identify a significant relationship between ENSO and both ...


Wilket Creek: Urbanization, Geomorphology, Policy, And Design, Danielle Barr 2017 The University of Western ONtario

Wilket Creek: Urbanization, Geomorphology, Policy, And Design, Danielle Barr

Electronic Thesis and Dissertation Repository

The understanding of the morphology of an urbanized channel is currently limited to a ‘black box’ understanding in that the main driving force of morphological change is hydrologic. This study aimed to expand our understanding of urbanized channels by conducting a socio-geomorphological investigation; that is, the natural and policy-driven events and processes leading to the current channel form. A fluvial audit including historical analysis and fieldwork was conducted in Wilket Creek, a southern Ontario urbanized channel, along with a review of provincial and municipal policy and reports. Overall, it was concluded that the current morphology of Wilket Creek is the ...


Comparisons Of Global Land Surface Seasonality And Phenology Derived From Avhrr, Modis And Viirs Data, Xiaoyang Zhang 2017 South Dakota State University

Comparisons Of Global Land Surface Seasonality And Phenology Derived From Avhrr, Modis And Viirs Data, Xiaoyang Zhang

Comparisons of Global Land Surface Seasonality and Phenology Derived from AVHRR, MODIS and VIIRS data

The data set in this collection is for the paper Comparisons of Global Land Surface Seasonality and Phenology Derived from AVHRR, MODIS and VIIRS Data which will be published in the "Journal of Geophysical Research: Biogeosciences."


The Anthropocene, Overview, scott w. schwartz 2017 CUNY Graduate Center

The Anthropocene, Overview, Scott W. Schwartz

Open Educational Resources

This presentation offers an overview of the developing concept of The Anthropocene -- a term coined to describe our current geological epoch, in which human impact on the planet will leave a permanent trace.


Assessing Landslide Susceptibility With Gis Using Qualitative & Quantitative Methods In Knox County, Nebraska, Christian J. Cruz 2017 University of Nebraska-Lincoln

Assessing Landslide Susceptibility With Gis Using Qualitative & Quantitative Methods In Knox County, Nebraska, Christian J. Cruz

Theses and Dissertations in Geography

This thesis assesses landslide susceptibility using data from LiDAR DEMs, land cover, and soil surveys. Data were assessed quantitatively through Bayesian logistic regression within a geographic information system (GIS) and statistical software to produce a landslide susceptibility map. The study area exhibits moderate relief where bluffs along the Missouri River valley gradually recede into rolling loess-mantled hills further to the south and southeast in Knox County. The six factors used to determine susceptibility to landslides are: land cover, parent material, slope aspect, slope curvature slope degree, and soil series. My findings show an increase in slope is the most significant ...


Environmental Justice And Gis: A Comparison Of Three Gis Methods For Estimating Vulnerable Population Exposed To Brownfield Pollution In Portland, Oregon, Kyle Goodman 2017 Portland State University

Environmental Justice And Gis: A Comparison Of Three Gis Methods For Estimating Vulnerable Population Exposed To Brownfield Pollution In Portland, Oregon, Kyle Goodman

Geography Masters Research Papers

This project compares three GIS techniques that estimate populations who are potentially affected by environmental contamination in Portland, Oregon. All three GIS techniques utilize polygon containment to estimate populations potentially exposed to pollutants based on block level census data. In this study, multiple buffer distances at half-mile increments were used across all three techniques. Circular Euclidean distance buffers surrounding a known contaminated property, such as documented brownfields, approximate the contamination zone. Accurate estimates for populations exposed to harmful environmental conditions could provide a better understanding of environmental justice issues. The specific research questions were: 1) Are the population estimates sensitive ...


Gis Specialist 2016 Internship With Cdm Smith In Boston, Massachusetts, Suzanne L. Meek 2017 Clark University

Gis Specialist 2016 Internship With Cdm Smith In Boston, Massachusetts, Suzanne L. Meek

International Development, Community and Environment (IDCE)

This report provides a detailed experience of my internship with CDM Smith during the summer of 2016. This was a formal 12-week internship that was extended an additional two weeks due to my success in the first few weeks. My title was listed as a GIS Specialist Intern. My responsibilities included applying GIS technologies to construction, water, and energy projects, digitizing various locations for cities and private clients, FEMA projects, and street light audits in two different towns in New England.


Where The Sidewalk Ends: Reimagining Urban Place And Governance In Semarang, Indonesia, Emmaleah K. Jones 2017 College of William and Mary

Where The Sidewalk Ends: Reimagining Urban Place And Governance In Semarang, Indonesia, Emmaleah K. Jones

Undergraduate Honors Theses

Purpose: This project analyzes the uses of space and geography up the scales of political organization – from the village to the municipal – attempting to find the intersections where physical space meets governance using Semarang, Indonesia as my strategic case. This research employs a biocultural lens, addressing the existing gaps in literature by advancing a framework to function across disciplines and ultimately reconnecting to its practical application in urban planning and design. Such a framework is important in providing a blueprint for building a coherent and supportive structure on which to assess the human impact of design and contribute new “human-centered ...


An Analysis Of The Relationship Between Snowpack And Groundwater Across Utah Watersheds., Samuel Wright 2017 University of Louisville

An Analysis Of The Relationship Between Snowpack And Groundwater Across Utah Watersheds., Samuel Wright

Electronic Theses and Dissertations

This thesis examined what type of relationship existed between snow water equivalence (SWE) volume and groundwater elevation within six sub-watersheds in Utah. Data was gathered on SWE from seventeen SNOTEL sites and groundwater elevation data was gathered from six continuously monitored groundwater wells. This data was gathered for January through May for 2011, 2013, and 2014 in order to represent the water conditions that were above average, below average, and average respectively. Using MLR formulas the total SWE for each sub-watershed was determined for each year/month. Afterwards a correlation analysis was performed to determine if any association existed between ...


Environmental And Climatic Constraints On Large-Scale Camelina Production In Eastern Arkansas, Benjamin Robert Tracy 2017 University of Arkansas, Fayetteville

Environmental And Climatic Constraints On Large-Scale Camelina Production In Eastern Arkansas, Benjamin Robert Tracy

Theses and Dissertations

Camelina sativa is a cold weather crop that is typically grown in semi-arid environments in the Western United States, usually as a spring crop, but sometimes during the winter. Research analyzing climate data and soil hydrology is important to better understand the environmental and terrain conditions necessary for Camelina farming wherever it is proposed for large-scale production. This study focused on various conditions and constraints pertaining to the potential for Camelina as a crop biofuel in Eastern Arkansas. Due to interest in the economic potential of crop biofuels in this area, and in particular the low input costs for Camelina ...


Understanding The Vulnerability Of The Population Of Afghanistan Under Multiple Natural And Anthropogenic Risks With An Indicator-Based Analysis, Matthew Repine Miller 2017 University of Tennessee, Knoxville

Understanding The Vulnerability Of The Population Of Afghanistan Under Multiple Natural And Anthropogenic Risks With An Indicator-Based Analysis, Matthew Repine Miller

Masters Theses

The purpose of this study is to understand the vulnerability to natural and anthropogenic hazards of the population of Afghanistan and the social factors which enhance or moderate such vulnerability. While vulnerability studies are commonly conducted in the United States, as well as many other global north countries, most studies of this type utilize data collected by central government entities in the form of a census which is periodically executed and uses standardized collection methods. In the case of Afghanistan, and many other countries in the global south, such data is hard to acquire, lacks a high level of confidence ...


Mapping Community Space And Place In Mto Wa Mbu, Tanzania Through Surveys And Gis, Jessica Craigg 2017 Georgia College and State University

Mapping Community Space And Place In Mto Wa Mbu, Tanzania Through Surveys And Gis, Jessica Craigg

Georgia College Student Research Events

Cities throughout the African continent have been developing at an unprecedented pace, many of them due to the influence of the tourism industry. This is particularly true in Tanzania, a country famous for its national parks and their draw to tourists who help provide money for development. However, the only way to get the whole story on how to spend this money is through the experiences and needs of the people themselves. This study focuses on a small town in northeastern Tanzania, Mto wa Mbu, situated near Lake Manyara National Park, and its people’s perceptions of the park and ...


Forest Inventory Data, Izaya Numata, Mark Cochrane, Jeppe Kjaersgaard, Sonaira Souza da Silva 2017 South Dakota State University

Forest Inventory Data, Izaya Numata, Mark Cochrane, Jeppe Kjaersgaard, Sonaira Souza Da Silva

Drought in Amazonia Data Sets

Forest inventory was conducted in Acre, the southwestern Amazon, in July-August in 2014. Field data was collected in four fragmented forest areas. In addition, this forest inventory includes data in forest areas burned in 2005 and 2010 and unburned forest areas. Forest inventory includes information on vegetation species and stem diameter at breast height (DBH) at each plot of 25m x 25m. All trees with DBH ≥ 10cm were measured at 25m x 25m plots and those with DBH< 10cm and lianas were measured at 10m x 10m and 5m x 5m subplots within each 25m x 25m plot.


Assessing Changes In Land Cover In Southeast Louisiana From 2001 To 2011 Using Time-Series National Land Cover Data, Ashley Tarver 2017 Western Michigan University

Assessing Changes In Land Cover In Southeast Louisiana From 2001 To 2011 Using Time-Series National Land Cover Data, Ashley Tarver

Master's Theses

Each year, Louisiana loses 20 to 25 square miles of land. If land loss persists at the current rate, a forced migration of the human population with serious implications may be warranted. Although studies have measured land use/land cover change in southeast Louisiana over multiple decades, a recent analysis of landscape changes since Hurricane Katrina’s landfall in 2005 is needed to identify areas with chronic long-term wetland losses and associated economic development patterns. This study, therefore, compares land cover and land use changes including wetland loss, and subsequent increases in developed land in ten parishes from 2001 to ...


Groundwater Potential Assessment Using Weighted Overlay In Rural Areas Of Kano State, Northern Nigeria, Tasiu Yalwa Rilwanu 2017 Bayero University Kano, Nigeria

Groundwater Potential Assessment Using Weighted Overlay In Rural Areas Of Kano State, Northern Nigeria, Tasiu Yalwa Rilwanu

Confluence Journal of Environmental Studies (CJES), Kogi State University, Nigeria

Water scarcity is a major problem for development and data on groundwater prospecting is limited for effective exploration that is why the study’s major objective is to identify groundwater potential, relate it with factors and determine areal extent of each potential zone. Land sat ETM + 2003 with resolution of 28.5m was used to map out the study area. Ground water potential was assessed through overlaying thematic maps of the factors which are lineament line density, drainage density, geology, hydrogeology, soil and vegetation. This was achieved using Analytical Hierarchy Process (AHP) nine point scale. Boreholes data obtained from 16 ...


Precipitation Intensity Trend Detection Using Hourly And Daily Observations In Portland, Oregon, Alexis Cooley, Heejun Chang 2017 Portland State University

Precipitation Intensity Trend Detection Using Hourly And Daily Observations In Portland, Oregon, Alexis Cooley, Heejun Chang

Geography Faculty Publications and Presentations

The intensity of precipitation is expected to increase in response to climate change, but the regions where this may occur are unclear. The lack of certainty from climate models warrants an examination of trends in observational records. However, the temporal resolution of records may affect the success of trend detection. Daily observations are often used, but may be too coarse to detect changes. Sub-daily records may improve detection, but their value is not yet quantified. Using daily and hourly records from 24 rain gages in Portland, Oregon (OR), trends in precipitation intensity and volume are examined for the period of ...


Location Choices Of Ethanol Firms In The Midwest Corn Belt, Monica A. Haddad, Gary Taylor, Francis Y. Owusu 2017 Iowa State University

Location Choices Of Ethanol Firms In The Midwest Corn Belt, Monica A. Haddad, Gary Taylor, Francis Y. Owusu

Monica Haddad

The Corn Belt has experienced a rapid expansion of corn-based ethanol plants. This has provided researchers the opportunity to examine the relative importance to the renewable fuels industry of several location factors previously identified as important to agro-industries. Using probit regression this study identifies the factors significant to ethanol firms’ location decisions in the four-state study area of Iowa, Illinois, Minnesota and Nebraska. In Iowa and Illinois, where corn is largely ubiquitous, firms move beyond corn supply to consider other localized factors in their decisionmaking process. Factors such as rail access, population density and proximity to blending terminals emerge as ...


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