Social and Behavioral Sciences Commons^™

Post-Fire Succession In Californian Coastal Sage Scrub: The Role Of Continual Basal Sprouting., George P. Malanson, W. E. Westman

George P Malanson

Dominant shrub species of coastal sage scrub in coastal southern Cali- fornia are able to produce shoots from their base on a continual basis in the absence of fire or other major defoliation. As a result, each shrub becomes a population of mixed-aged branches (ramets) and extends its duration in the canopy beyond the age of any of its above-ground phytomass, reduces the incidence of senescence, and per- mits an individual (genet) to survive during long fire-free intervals. A computer sim- ulation of succession in coastal sage scrub under differing fire intervals shows that continual basal sprouting may be significant …

Effects Of Terrain On Excessive Travel Distance By Snow Avalanches, George P. Malanson

George P Malanson

No abstract provided.

Transverse Pattern Of Vegetation On Avalanche Paths In The Northern Rocky Mountains, Montana., George P. Malanson, D. R. Butler

George P Malanson

No abstract provided.

Flood Frequency And The Assemblage Of Dispersal Types In Hanging Gardens Of The Narrows, Zion National Park, Utah, George P. Malanson, J. Kay

George P Malanson

No abstract provided.

Improving Environmental Simulation Models To Assess Climate Change Impacts, George P. Malanson, Marc P. Armstrong

George P Malanson

Increased levels of atmospheric carbon dioxide and other by-products of human civilization are expected to disrupt the global energy budget and induce climatic change, which will aIter the distribution of plant species and the composition of plant communities. In spite of the importance of these projected effects, our understanding of the processes leading to such changes needs to be strengthened. This paper addresses the need to improve models that are used to assess spatial aspects of the response of vegetation to anthropogenic climate change. Several modifications are suggested, each of which relates to changes in forest community composition that occur …

Identifying The Biodiversity Research Needs Related To Forest Fragmentation, George P. Malanson, John A. Kupfer, Scott B. Franklin

George P Malanson

No abstract provided.

Woody Debris, Sediment, And Riparian Vegetation Of A Subalpine River, Montana, Usa., George P. Malanson, D. R. Butler

George P Malanson

No abstract provided.

Farm Chemicals As Indicators Of Sediment Sources In Iowa Rivers, George P. Malanson, E. N. Nealson

George P Malanson

Determination of the source of sediment in rivers and streams is important in order to effectively implement a program to reduce its concentration. This project uses agricultural chemicals as indicators of current sources of sediment from farm fields in the Cedar River, Iowa watershed. We hypothesized that the relations of sediment, nitrogen, and phosphorous yields to precipitation would indicate whether sediment originated from erosion of fields or from channel bank erosion of floodplains. The changes in sediment, nitrate, and phosphorus in the channel in response to rainfall events were determined. In simple regressions, all three variables have similar slopes when …

Ordination Of Woody Vegetation In A Ouachita National Forest Watershed, George Malanson, Denise Marion

George P Malanson

Species response to competition and other environmental gradients has important implications for forest ecosystem managers who desire to both maintain diversity and provide a sustained flow of forest goods and services. Woody species on a 140-acre watershed in the Ouachita National Forest are ordinated with detrended correspondence analysis (DCA) and canonical correspondence analysis (CCA) to identify the important influences on species distribution at this scale. Species composition is found to respond primarily to a moisture gradient, and secondarily to competition with shortleaf pine (Pinus echinata Mill.). Centrifugal organization of species along gradients is suggested by the relative locations of species …

Habitat And Plant Distributions In Hanging Gardens Of The Narrows, Zion National Park, Utah, George P. Malanson

George P Malanson

No abstract provided.

Reinterpretation Of Relations Between Vegetation Removal And Water Yield, George P. Malanson, D. P. Post

George P Malanson

While the relation between vegetation clearance and increasing streamflow appears to be strong for data aggregated among geographic regions, results are equivocal in local areas. Earlier data are re-analyzed to consider the role of hydroclimatology. While vegetation clearance increases absolute streamflow, the proportional change is not significant. Residuals of regressions of absolute and proportional change in streamflow on vegetation clearance are related to precipitation, with positive and negative slopes, respectively. A few outliers with high responses are important in creating a pattern, and hydroclimatology is a better predictor of change in streamflow than is vegetation clearance for aggregate data. With …

Placing Gis In Sustainability Education, Sungsoon Hwang

Sungsoon Hwang