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Articles 31 - 60 of 250
Full-Text Articles in Social and Behavioral Sciences
Geomorphic Patterns And Processes At Alpine Tree Line, David Butler, George Malanson, Lynn Resler, Stephen Walsh
Geomorphic Patterns And Processes At Alpine Tree Line, David Butler, George Malanson, Lynn Resler, Stephen Walsh
George P Malanson
No abstract provided.
Spatial Representations Of Habitat In Competition-Colonization Models, George Malanson
Spatial Representations Of Habitat In Competition-Colonization Models, George Malanson
George P Malanson
No abstract provided.
Natural Areas Facing Climate Change, George Malanson
Natural Areas Facing Climate Change, George Malanson
George P Malanson
No abstract provided.
Extinction-Debt Trajectories And Spatial Patterns Of Habitat Destruction, George Malanson
Extinction-Debt Trajectories And Spatial Patterns Of Habitat Destruction, George Malanson
George P Malanson
No abstract provided.
Tree-Ring Analysis And Natural Hazard Chronologies; Minimum Sample Sizes And Index Values, David Butler, George Malanson, Jack Oelfke
Tree-Ring Analysis And Natural Hazard Chronologies; Minimum Sample Sizes And Index Values, David Butler, George Malanson, Jack Oelfke
George P Malanson
No abstract provided.
Dispersal Across Continuous And Binary Representations Of Landscapes, George Malanson
Dispersal Across Continuous And Binary Representations Of Landscapes, George Malanson
George P Malanson
No abstract provided.
Mapping, Modeling, And Visualization Of The Influences Of Geomorphic Processes On The Alpine Treeline Ecotone, Glacier National Park, Mt, Usa, Stephen Walsh, David Butler, George Malanson, Kelley Crews-Meyer
Mapping, Modeling, And Visualization Of The Influences Of Geomorphic Processes On The Alpine Treeline Ecotone, Glacier National Park, Mt, Usa, Stephen Walsh, David Butler, George Malanson, Kelley Crews-Meyer
George P Malanson
Spatially explicit digital technologies are integrated within a geographic information science (GISc) context to map, model, and visualize selected direct and indirect geomorphic processes that influence the spatial organization of the alpine treeline ecotone (ATE) in Glacier National Park (GNP), MT. GISc is used to examine alpine treeline and its biotic and abiotic controls through the application of multi-resolution remote sensing systems, geospatial information and product derivatives, and simulations of treeline spatial organization. Three geomorphic features are examined: relict solifluction terraces, evidence of nonlinearity in the development of a catena, and the locations of isolated boulders. The significance of these …
Beaver, Treefall, And Cutbank Erosion In Midwestern Rivers, David Butler, George Malanson, John Kupfer, Philip Pryde
Beaver, Treefall, And Cutbank Erosion In Midwestern Rivers, David Butler, George Malanson, John Kupfer, Philip Pryde
George P Malanson
No abstract provided.
Adding Ecosystem Function To Agent-Based Land Use Models, V. Yadav, S. Del Grosso, W. Parton, George Malanson
Adding Ecosystem Function To Agent-Based Land Use Models, V. Yadav, S. Del Grosso, W. Parton, George Malanson
George P Malanson
No abstract provided.
Alpine Treeline, Climate, And Environmental Changes, George Malanson, David Butler
Alpine Treeline, Climate, And Environmental Changes, George Malanson, David Butler
George P Malanson
No abstract provided.
Spatially Explicit Historical Land Use Land Cover And Soil Organic Carbon Transformations In Southern Illinois, Vineet Yadav, George Malanson
Spatially Explicit Historical Land Use Land Cover And Soil Organic Carbon Transformations In Southern Illinois, Vineet Yadav, George Malanson
George P Malanson
No abstract provided.
Effect Of Landscape Position On The Sediment Chemistry Of Abandoned-Channel Wetlands, W. Schwarz, George Malanson, F. Weirich
Effect Of Landscape Position On The Sediment Chemistry Of Abandoned-Channel Wetlands, W. Schwarz, George Malanson, F. Weirich
George P Malanson
The nature of sediments in abandoned channels is an important component of their development as floodplain wetlands. The texture, organic matter, phosphorous, potassium, and nitrogen content of sediments were determined for abandoned channels along the Iowa and Cedar Rivers near their confluence in Iowa. Differences in the levels of these constituents were examined among categories of three landscape gradients: present connectivity to the river, time since abandonment, and proximity to agricultural land use. Local scale processes of ecological development are seen in the importance of time for increased organic matter and nitrogen. Basin scale processes of sediment transport and deposition …
Woody Debris, Sediment, And Riparian Vegetation Of A Subalpine River, Montana, U.S.A, George Malanson, David Butler
Woody Debris, Sediment, And Riparian Vegetation Of A Subalpine River, Montana, U.S.A, George Malanson, David Butler
George P Malanson
No abstract provided.
Variability In An Edaphic Indicator In Alpine Tundra, George Malanson, D. Butler, D. Cairns, T. Welsh
Variability In An Edaphic Indicator In Alpine Tundra, George Malanson, D. Butler, D. Cairns, T. Welsh
George P Malanson
No abstract provided.
Landscape Frontiers, Geography Frontiers: Lessons To Be Learned, George Malanson, Yu Zeng, Stephen Walsh
Landscape Frontiers, Geography Frontiers: Lessons To Be Learned, George Malanson, Yu Zeng, Stephen Walsh
George P Malanson
No abstract provided.
Site Locations And Characteristics Of Miniature Patterned Ground, Eastern Glacier National Park, Montana, U.S.A, David Butler, George Malanson
Site Locations And Characteristics Of Miniature Patterned Ground, Eastern Glacier National Park, Montana, U.S.A, David Butler, George Malanson
George P Malanson
We examined a total of 68 sites with miniature polygonal patterned ground above treeline, along and east of the Continental Divide in Glacier National Park, Montana, USA. Patterned ground develops at three geographic site-types: convex uplands; concave mountain passes and cols; and valleyside slopes. Data were collected at each site to characterize the patterned ground morphometry. Morphometry was similar regardless of site-type, and occurrence was dependent on the presence of fine-grained material on older solifluction terraces or sorted nets.
Feedback-Driven Response To Multidecadal Climatic Variability At An Alpine Treeline, Kathryn Alftine, George Malanson, Daniel Fagre
Feedback-Driven Response To Multidecadal Climatic Variability At An Alpine Treeline, Kathryn Alftine, George Malanson, Daniel Fagre
George P Malanson
The Pacific Decadal Oscillation (PDO) has significant climatological and ecological effects in northwestern North America. Its possible effects and their modification by feedbacks are examined in the forest-tundra ecotone in Glacier National Park, Montana, USA. Tree ring samples were collected to estimate establishment dates in 10 quadrats. Age-diameter regressions were used to estimate the ages of uncored trees. The temporal pattern of establishment and survival was compared to the pattern of the PDO. A wave of establishment began in the mid-1940s, rose to a peak rate in the mid-1970s, and dropped precipitously beginning ca. 1980 to near zero for the …
Modeling Watershed-Scale Sequestration Of Soil Organic Carbon For Carbon Credit Programs, Vineet Yadav, George Malanson, Elias Bekele, Christopher Lant
Modeling Watershed-Scale Sequestration Of Soil Organic Carbon For Carbon Credit Programs, Vineet Yadav, George Malanson, Elias Bekele, Christopher Lant
George P Malanson
Impending risks associated with climate change have forced the global community to devise tradable pollution permit or "cap and trade" approaches to control the release of greenhouse gases. In the U.S, soils have the potential to offset about 10 percent of annual CO sub(2) emissions; however, if carbon credits are to be included in greenhouse gas control programs, soil organic carbon (SOC) sequestration rates associated with agricultural land uses must be computed at a watershed scale. The Soil Water Assessment Tool (SWAT) water quality model, the Water Erosion Prediction Project (WEPP) erosion model, and the CENTURY 4.0 a soil carbon …
Riparian Landscapes, George Malanson
Modeling Impacts Of Erosion And Deposition On Soil Organic Carbon In The Big Creek Basin Of Southern Illinois, Vineet Yadav, George Malanson
Modeling Impacts Of Erosion And Deposition On Soil Organic Carbon In The Big Creek Basin Of Southern Illinois, Vineet Yadav, George Malanson
George P Malanson
No abstract provided.
Modeling Feedback Effects On Linear Patterns Of Subalpine Forest Advancement, M. Bekker, George Malanson
Modeling Feedback Effects On Linear Patterns Of Subalpine Forest Advancement, M. Bekker, George Malanson
George P Malanson
No abstract provided.
An Overview Of Scale, Pattern, Process Relationships In Geomorphology; A Remote Sensing And Gis Perspective, Stephen Walsh, David Butler, George Malanson
An Overview Of Scale, Pattern, Process Relationships In Geomorphology; A Remote Sensing And Gis Perspective, Stephen Walsh, David Butler, George Malanson
George P Malanson
Satellite remote sensing and geographic information systems are emerging technologies in geomorphology. They offer the opportunity to gain fresh insights into biophysical systems through the spatial, temporal, spectral, and radiometric resolutions of remote sensing systems and through the analytical and data integration capability of GIS. The two technologies can be linked together into a synergistic system that is particularly well suited to the examination of landscape conditions through the interrelationships of scale, pattern, and process, a paradigm that has gained prominence in the fields of biogeography and landscape ecology. In this study, we apply optical and microwave remote sensing systems …
Uncovering Spatial Feedbacks At Alpine Treeline Using Spatial Metrics In Evolutionary Simulations, George Malanson, Yu Zeng
Uncovering Spatial Feedbacks At Alpine Treeline Using Spatial Metrics In Evolutionary Simulations, George Malanson, Yu Zeng
George P Malanson
No abstract provided.
Landscape Fragmentation And Dispersal In A Model Of Riparian Forest Dynamics, Jeffrey Hanson, George Malanson, Marc Armstrong
Landscape Fragmentation And Dispersal In A Model Of Riparian Forest Dynamics, Jeffrey Hanson, George Malanson, Marc Armstrong
George P Malanson
No abstract provided.
Patterns Of Correlation Among Landscape Metrics, Qian Wang, George Malanson
Patterns Of Correlation Among Landscape Metrics, Qian Wang, George Malanson
George P Malanson
Representations of real and virtual landscapes are often abstracted and quantified as "landscape metrics" in landscape ecology, and while much is known about them after 20 years of use, some relations are as yet unexplored. The objective of this research is to gain a better understanding of the effects of spatial representation in landscape ecology. Nine hundred artificial landscapes were generated with varying spatial patterns created using a fractal landscape generator with 3D fractal dimensions ranging from 2.1 to 2.9 in increments of 0.1. The 3D landscapes were reduced to 2D patterns by putting the cells into five classes. Forty-four …
Not Seeing The Ocean For The Islands: The Mediating Influence Of Matrix-Based Processes On Forest Fragmentation Effects, John Kupfer, George Malanson, Scott Franklin
Not Seeing The Ocean For The Islands: The Mediating Influence Of Matrix-Based Processes On Forest Fragmentation Effects, John Kupfer, George Malanson, Scott Franklin
George P Malanson
The pervasive influence of island biogeography theory on forest fragmentation research has often led to a misleading conceptualization of landscapes as areas of forest/habitat and ‘non-forest/non-habitat’ and an overriding focus on processes within forest remnants at the expense of research in the human-modified matrix. The matrix, however, may be neither uniformly unsuitable as habitat nor serve as a fully–absorbing barrier to the dispersal of forest taxa. In this paper, we present a conceptual model that addresses how forest habitat loss and fragmentation affect biodiversity through reduction of the resource base, subdivision of populations, alterations of species interactions and disturbance regimes, …
Complexity Theory, Spatial Simulation Models, And Land Use Dynamics In The Northern Ecuadorian Amazon, Stephen Walsh, Joseph Messina, Carlos Mena, George Malanson
Complexity Theory, Spatial Simulation Models, And Land Use Dynamics In The Northern Ecuadorian Amazon, Stephen Walsh, Joseph Messina, Carlos Mena, George Malanson
George P Malanson
No abstract provided.
The Western Cordillera; The Physical Geography Of North America, George Malanson, David Butler
The Western Cordillera; The Physical Geography Of North America, George Malanson, David Butler
George P Malanson
No abstract provided.
Directional Positive Feedback And Pattern At An Alpine Tree Line, Kathryn Alftine, George Malanson
Directional Positive Feedback And Pattern At An Alpine Tree Line, Kathryn Alftine, George Malanson
George P Malanson
No abstract provided.
Simulated Village Locations In Thailand: A Multi-Scale Model Including A Neural Network Approach, Wenwu Tang, George Malanson, Barbara Entwisle
Simulated Village Locations In Thailand: A Multi-Scale Model Including A Neural Network Approach, Wenwu Tang, George Malanson, Barbara Entwisle
George P Malanson
The simulation of rural land use systems in general, and rural settlement dynamics in particular, has developed with synergies of theory and methods for decades. Three current issues are: linking spatial patterns and processes, representing hierarchical relations across scales, and considering nonlinearity to address complex non-stationary settlement dynamics. We present a hierarchical simulation model to investigate complex rural settlement dynamics in Nang Rong, Thailand. This simulation uses sub-models to allocate new villages at three spatial scales. Regional and sub-regional models, which involve a nonlinear space-time autoregressive model implemented in a neural network approach, determine the number of new villages to …