Alternative Methods To Predict Actual Evapotranspiration Illustrate The Importance Of Accounting For Phenology: The Event Driven Phenology Model Part Ii,
2012
South Dakota State University
Alternative Methods To Predict Actual Evapotranspiration Illustrate The Importance Of Accounting For Phenology: The Event Driven Phenology Model Part Ii, V. Kovalskyy, G. M. Henebry
Natural Resource Management Faculty Publications
Evapotranspiration (ET) flux constitutes a major component of both the water and energy balances at the land surface. Among the many factors that control evapotranspiration, phenology poses a major source of uncertainty in attempts to predict ET. Contemporary approaches to ET modeling and monitoring frequently summarize the complexity of the seasonal development of vegetation cover into static phenological trajectories (or climatologies) that lack sensitivity to changing environmental conditions. The Event Driven Phenology Model (EDPM) offers an alternative, interactive approach to representing phenology. This study presents the results of an experiment designed to illustrate the differences in ET arising from various …
A New Concept For Simulation Of Vegetated Land Surface Dynamics: The Event Driven Phenology Model Part I,
2012
South Dakota State University
A New Concept For Simulation Of Vegetated Land Surface Dynamics: The Event Driven Phenology Model Part I, V. Kovalskyy, G. M. Henebry
Natural Resource Management Faculty Publications
Phenologies of the vegetated land surface are being used increasingly for diagnosis and prognosis of climate change consequences. Current prospective and retrospective phenological models stand far apart in their approaches to the subject. We report on an exploratory attempt to implement a phenological model based on a new event driven concept which has both diagnostic and prognostic capabilities in the same modeling framework. This Event Driven Phenological Model (EDPM) is shown to simulate land surface phenologies and phenophase transition dates in agricultural landscapes based on assimilation of weather data and land surface observations from spaceborne sensors. The model enables growing …
The Detection Of Forest Structures In The Monongahela National Forest Using Lidar,
2012
Marshall University
The Detection Of Forest Structures In The Monongahela National Forest Using Lidar, Dominique Norman
Theses, Dissertations and Capstones
The mapping of structural elements of a forest is important for forestry management to provide a baseline for old and new-growth trees while providing height strata for a stand. These activities are important for the overall monitoring process which aids in the understanding of anthropogenic and natural disturbances. Height information recorded for each discrete point is key for the creation of canopy height, canopy surface, and canopy cover models. The aim of this study is to assess if LiDAR can be used to determine forest structures. Small footprint, leaf-off LiDAR data were obtained for the Monongahela National Forest, West Virginia. …
Systematics, Biogeography And Leaf Anatomy And Architecture Of Bursera Subgen. Bursera (Burseraceae) In The Greater Antilles And The Bahamas,
2012
Claremont Graduate University
Systematics, Biogeography And Leaf Anatomy And Architecture Of Bursera Subgen. Bursera (Burseraceae) In The Greater Antilles And The Bahamas, María Cristina Martínez-Habibe
CGU Theses & Dissertations
This dissertation presents a comprehensive study on the origin and evolutionary relationships of the species of Bursera in Cuba, Hispaniola, Jamaica and the Bahamas. The goals of the first chapter were to test monophyly of the group, revisit a recent transfer of two species of Bursera to Commiphora, and place recently discovered mainland species using the reconstructed phylogenies. Additionally, divergence estimations using fossils were used as independent tests of several hypotheses regarding the arrival of the modern biota to the Greater Antilles and Bahamas (GAB). I conclude that all endemic taxonomic entities of the genus in this region belong …
Potential Wolverine Habitat Vs. Winter Recreation. Conflict In Colorado!,
2012
University of Denver
Potential Wolverine Habitat Vs. Winter Recreation. Conflict In Colorado!, Paul Quigley
Geography and the Environment: Graduate Student Capstones
The Global list of endangered species of flora and fauna is growing, with the most highly specialized species often at ‘critically endangered’ status. Managing these populations effectively involves numerous and varied organizations, conflicting motivations, arbitrary anthropogenic boundaries and often most importantly, data compilation and management. We are seeing many more reintroductions of locally extirpated species back into habitats of historical prevalence – and as extreme a method of conservation as this is, there is still a need for more extreme methods. High profile and highly specialized endangered species are often managed in a ‘crisis’ mode, where complex behaviors and interactions …
Review Of Daniel Mockli's "Strategic Trends 2012: Key Developments In Global Affairs,
2012
Purdue University
Review Of Daniel Mockli's "Strategic Trends 2012: Key Developments In Global Affairs, Bert Chapman
Libraries Faculty and Staff Scholarship and Research
This review essay describes and analyzes the content of this annual compilation of international affairs essays published by the Zurich-based Center for Strategic Studies.
Grts And Graphs: Monitoring Natural Resources In Urban Landscapes,
2012
University of Richmond
Grts And Graphs: Monitoring Natural Resources In Urban Landscapes, Todd R. Lookingbill, John Paul Schmit, Shawn L. Carter
Geography and the Environment Faculty Publications
Environmental monitoring programs are an important tool for providing land managers with a scientific basis for management decisions. However, many ecological processes operate on spatial scales that transcend management boundaries (Schonewald-Cox 1988). For example, adjacent lands may influence protected-area resources via edge effects, source-sink dynamics, or invasion processes (Jones et al. 2009). Hydrologic alterations outside management units also may have profound effects on the integrity of resources being managed (Pringle 2000). The impacts of climate change are presenting challenges to resource management at local-to-global scales (Karl et al. 2009). This potential disparity between ecological and political boundaries presents an interesting …
Making Lives, Changing A Landscape: An Environmental History Of The Tualatin Valley, Washington County, Oregon,
2012
Portland State University
Making Lives, Changing A Landscape: An Environmental History Of The Tualatin Valley, Washington County, Oregon, Camille A. Cope
Geography Masters Research Papers
Sheltered by mountains on all sides, the 724-square mile Tualatin Valley has been home to successive groups of people who have shaped the landscape based on their needs, tools, and ideas about the human relationship to nature. Thousands of years of indigenous burning practices and cultivation of native plants, followed by two centuries of European-American fur trapping, agriculture, logging, and urbanization have created the Tualatin Valley landscape of today. Understanding how a history of changing land use has affected the region is integral to building an environmentally sustainable future.
Land Abandonment And Wild Ungulates: Maintaining Open Spaces In Catalan Pre-Pyrenees,
2012
West Chester University of Pennsylvania
Land Abandonment And Wild Ungulates: Maintaining Open Spaces In Catalan Pre-Pyrenees, Joan M. Welch, Josep Vila Subiros, Diego Varga Linde
Geography & Planning Faculty Publications
No abstract provided.
Transboundary Political Ecology In The Peru-Brazil Borderlands: Mapping Workshops, Geographic Information, And Socio-Environmental Impacts,
2012
University of Richmond
Transboundary Political Ecology In The Peru-Brazil Borderlands: Mapping Workshops, Geographic Information, And Socio-Environmental Impacts, David S. Salisbury, A. William Flores De Melo, Pedro Tipula Tipula
Geography and the Environment Faculty Publications
Development, resource, and settlement frontiers inspired by national policies and global demand continue to expand into the international boundary lands of Amazonia. National policies promote development and conservation projects on lands already inhabited and managed. Regional governments are increasingly frustrated by the inadequate and outdated geographic information available to solve overlapping claims and improve planning in sensitive border regions. The resulting combination of inappropriate policies, contested resources, and poor geographic information in the borderlands create impacts not only for national, regional, and local landscapes and livelihoods but also foreign relations due to transboundary effects. This article uses a transboundary political …
Análisis De Los Impactos Socio-Ambientales De Las Carreteras En La Amazonía: Carretera De Puerto Esperanza A Iñapari En Perú,
2012
University of Richmond
Análisis De Los Impactos Socio-Ambientales De Las Carreteras En La Amazonía: Carretera De Puerto Esperanza A Iñapari En Perú, George Appling, David S. Salisbury
Geography and the Environment Poster Presentations
La Cuenca del Purús está situada en las regiones de Ucayali y Madre de Dios en el sudeste del Perú. Además del Rio Alto Purús, la cuenca abarca un parque nacional, una reserva comunal, reservas territoriales para pueblos indígenas aislados, territorios indígenas y un pueblo pequeño (Figura 1). En el año 2004, el Gobierno Peruano creó el Parque Nacional Alto Purús, el más grande en el Perú, para preservar una de las secciones mejor conservadas del bosque tropical en el bioma Amazónico. Como se demuestra en la Figura 1, la Reserva Comunal Purús colindante, sirve como zona de amortiguamiento entre …
Impacts Of Urbanisation On The Native Avifauna Of Perth, Western Australia,
2012
Edith Cowan University
Impacts Of Urbanisation On The Native Avifauna Of Perth, Western Australia, Robert A. Davis, Cheryl Gole, J Dale Roberts
Research outputs 2013
Urban development either eliminates, or severely fragments, native vegetation, and therefore alters the distribution and abundance of species that depend on it for habitat. We assessed the impact of urban development on bird communities at 121 sites in and around Perth, Western Australia. Based on data from community surveys, at least 83 % of 65 landbirds were found to be dependent, in some way, on the presence of native vegetation. For three groups of species defined by specific patterns of habitat use (bushland birds), there were sufficient data to show that species occurrences declined as the landscape changed from variegated …
Impacts Of Urbanisation On The Native Avifauna Of Perth, Western Australia,
2012
Edith Cowan University
Impacts Of Urbanisation On The Native Avifauna Of Perth, Western Australia, Robert Davis, C Gole, Jd Roberts
Research outputs 2012
Urban development either eliminates, or severely fragments, native vegetation, and therefore alters the distribution and abundance of species that depend on it for habitat. We assessed the impact of urban development on bird communities at 121 sites in and around Perth, Western Australia. Based on data from community surveys, at least 83 % of 65 landbirds were found to be dependent, in some way, on the presence of native vegetation. For three groups of species defined by specific patterns of habitat use (bushland birds), there were sufficient data to show that species occurrences declined as the landscape changed from variegated …
The Geography Of Greenhouse Gas Emissions From Within Urban Areas Of Asia,
2012
CUNY Hunter College
The Geography Of Greenhouse Gas Emissions From Within Urban Areas Of Asia, Jochen Albrecht, Peter Marcotullio, Andrea Sarzynski, Niels Schulz
Publications and Research
This paper aims to advance two objectives: (1) identify and explore greenhouse gas emissions from urban areas in Asia at the regional level; and (2) explore covariates of urban greenhouse gas emissions. We use the Emissions Database for Global Atmospheric Research estimates for carbon dioxide, methane, nitrous oxide, and sulfur hexafluoride from 14 source activities for the year 2000, which are allocated on a 1/108 global grid. We extract emissions for 3535 urban extents all with populations over 50,000, accounting for approximately 91% of the region’s urban population. We use regression analysis to associate emissions with urban area and growth, …
Streamflow Analysis And A Comparison Of Hydrologic Metrics In Urban Streams,
2012
Portland State University
Streamflow Analysis And A Comparison Of Hydrologic Metrics In Urban Streams, Matthew Lawton Wood
Dissertations and Theses
This study investigates the hydrologic effects of urbanization in two Portland, Oregon streams through a comparison of three hydrologic metrics. Hydrologic metrics used in this study are the mean annual runoff ratio (Qa), mean seasonal runoff ratio (Qw and Qd), and the fraction of time that streamflow exceeds the mean streamflow during the year (TQmean). Additionally, the relative change in streamflow in response to storm events was examined for two watersheds. For this investigation urban development is represented by two urbanization metrics: percent impervious and road density. Descriptive and inferential statistics were used to evaluate the relationship between the hydrologic …
Quasi‐Hidden Markov Model And Its Applications In Cluster Analysis Of Earthquake Catalogs,
2011
Singapore Management University
Quasi‐Hidden Markov Model And Its Applications In Cluster Analysis Of Earthquake Catalogs, Zhengxiao Wu
Research Collection School of Economics
We identify a broad class of models, quasi-hidden Markov models (QHMMs), which include hidden Markov models (HMMs) as special cases. Applying the QHMM framework, this paper studies how an earthquake cluster propagates statistically. Two QHMMs are used to describe two different propagating patterns. The “mother-and-kids” model regards the first shock in an earthquake cluster as “mother” and the aftershocks as “kids,” which occur in a neighborhood centered by the mother. In the “domino” model, however, the next aftershock strikes in a neighborhood centered by the most recent previous earthquake in the cluster, and therefore aftershocks act like dominoes. As the …
Land Systems Of The Kimberley Region, Western Australia,
2011
Department of Primary Industries and Regional Development, Western Australia
Land Systems Of The Kimberley Region, Western Australia, A L. Payne, N Schoknecht
Technical Bulletins
The Land Systems of the Kimberley Region Report describes and maps the landscapes, soils and vegetation of the Kimberley region. This report is a consolidation of surveys carried out by different organisations, across different areas of the Kimberley, since the 1940s. The Kimberley region, as defined in this bulletin, covers 330 070km². The report categorises the Kimberley region into 111 land systems. Under each land system, the report identifies the vulnerabilities of those areas, and provides recommendations on how to achieve sustainable use. The report also publishes pasture types for the entire region and the grazing potential for each pasture, …
Spatial Analysis Of Fatal Automobile Crashes In Kentucky,
2011
Western Kentucky University
Spatial Analysis Of Fatal Automobile Crashes In Kentucky, William Nathan Oris
Masters Theses & Specialist Projects
Fatal automobile crashes have claimed the lives of over 33,000 people each year in the United States since 1995. As in any point event, fatal crash events do not occur randomly in time or space. The objectives of this study were to identify spatial patterns and hot spots in FARS (Fatal Analysis Reporting System) fatal crash events based on temporal and demographic characteristics. The methods employed included 1) rate calculation using FARS points and average daily traffic flow; 2) planar kernel density estimation of FARS crash events based on temporal and demographic attributes within the data; and 3) two case …
Multiple Storm Event Impacts On Epikarst Storage And Transport Of Organic Soil Amendments In South-Central Kentucky,
2011
Western Kentucky University
Multiple Storm Event Impacts On Epikarst Storage And Transport Of Organic Soil Amendments In South-Central Kentucky, Sean M. Vanderhoff
Masters Theses & Specialist Projects
The groundwater in agricultural karst areas is susceptible to contamination from organic soil amendments and pesticides. During major storm events during 2011, dye traces were initiated using sulphorhodamine-B, fluorescein and eosine in a groundwater recharge area where manure was applied to the ground. Fecal coliform samples were collected from significant storm events from January-September 2011. Water samples and geochemical data were collected every four hours before, during, and between the storm events from a waterfall in Crumps cave flowing from the known recharge area to track the transport and residence time of the epikarst water and organic soil amendments during …
Perception Of Aquifer Depletion And The Effects Of Land Use Change Across The Madaba Plain, Jordan,
2011
University of Arkansas, Fayetteville
Perception Of Aquifer Depletion And The Effects Of Land Use Change Across The Madaba Plain, Jordan, Mohammad Salem
Graduate Theses and Dissertations
In Jordan, demand for water for agricultural purposes has put a high strain on aquifer resources. Water mining, erosion, and desertification have all increased as global temperatures rise. This along with fragmentation of the landscape have altered the environment in a profound way. The Madaba Plain was chosen for this study due to the agricultural activities that take place there, as well as the proximity to a number of population centers. The purpose of the study is to examine how fragmentation of irrigated landscape has affected the aquifers underneath, while taking into account perceptions of risk of the local population. …
