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Full-Text Articles in Life Sciences

Modeling Of Soil Sealing By Urban Sprawl In Wukro, Ethiopia Using Remote Sensing And Gis Techniques, Ahmed Harb Rabia A.H. Rabia May 2012

Modeling Of Soil Sealing By Urban Sprawl In Wukro, Ethiopia Using Remote Sensing And Gis Techniques, Ahmed Harb Rabia A.H. Rabia

Ahmed Harb Rabia A.H. Rabia

Soil sealing is the covering of the soil surface with materials like concrete and stone, as a result of new buildings, roads, parking places but also other public and private space. Soil sealing by urban sprawl continues to increase all over the world where the area of urbanized land is increasing even more rapidly than the population. The degree of sealing is associated to the land use type and the density of population. Techniques of Remote Sensing and Geographical Information System (GIS) have been used widely to measure urban sprawl and to analyze the spatial features and unique mechanism of …


Integrated Modeling Of Communities: Parasitism, Competition, And Demographic Synchrony In Sympatric Ducks, Guillaume Péron, David N. Koons Jan 2012

Integrated Modeling Of Communities: Parasitism, Competition, And Demographic Synchrony In Sympatric Ducks, Guillaume Péron, David N. Koons

David N. Koons

Functionally similar species often co-occur within an ecosystem, and they can compete for or facilitate each other’s access to resources. The coupled dynamics of such species play an important role in shaping biodiversity and an ecosystem’s resilience to perturbations. Here we study two congeneric North American ducks: Redhead Aythya americana and Canvasback A. vaselineria. Both are largely sympatric during the breeding season, and in addition to competition, facultative parasitic egg-laying can lead to interspecific density dependence. Using multi-population integrated models, we combined capture– recovery data, population surveys, and age ratio data in order to simultaneously estimate the mechanistic drivers of …


Global Effects Of Climate Change On Wildfire: Causal Relationships Of Fire, The Natural Environment And Human Activities, Lindon N. Pronto Dec 2011

Global Effects Of Climate Change On Wildfire: Causal Relationships Of Fire, The Natural Environment And Human Activities, Lindon N. Pronto

Lindon N Pronto

Climate change and human activity is significantly impacting the frequency and severity of wildfires across the globe. Although climate change and human population are the overarching factors affecting wildfires in the current dialogue, the issues are more complex and often not fully understood. These issues range from global temperature increases and severe drought cycles to the relatively new phenomenon of the wildland urban interface (WUI). This is the area where structures are integrated with or immediately surrounded by areas of moderate to high fire risk and are directly linked to fuel types and topographic features. Because climate change is such …


A Time-Efficient Method For Analyzing Bone Strain With Large Subject Pools, Daniel Leib, Eric Dugan, Henry Wang Jan 2011

A Time-Efficient Method For Analyzing Bone Strain With Large Subject Pools, Daniel Leib, Eric Dugan, Henry Wang

Daniel Leib

No abstract provided.


An Integrated Modeling Method For Bone Strain Analysis, Daniel Leib, Henry Wang, Eric Dugan Jan 2010

An Integrated Modeling Method For Bone Strain Analysis, Daniel Leib, Henry Wang, Eric Dugan

Daniel Leib

No abstract provided.


An Integrated Modeling Method For Tibia Strain Analysis, Daniel Leib, Henry Wang Jan 2010

An Integrated Modeling Method For Tibia Strain Analysis, Daniel Leib, Henry Wang

Daniel Leib

No abstract provided.