A5027549117- Ecology and Vegetation Dynamics Studies
- Rangeland and Wildlife Management
- Botany, Ecology, and Taxonomy Studies
- Botany and Plant Ecology Studies
- Fire effects on ecosystems
- Mycorrhizal Fungi and Plant Interactions
- Peatlands and Wetlands Ecology
- Coastal wetland ecosystem dynamics
- Archaeology and Natural History
- Plant and animal studies
- Forest Ecology and Biodiversity Studies
- Bryophyte Studies and Records
- Plant Pathogens and Resistance
- Soil erosion and sediment transport
- Lichen and fungal ecology
- Ecology and Conservation Studies
- Forest ecology and management
- Turfgrass Adaptation and Management
- Soil and Water Nutrient Dynamics
- Phytochemistry and biological activities of Ficus species
- Botanical Research and Chemistry
- Genetic diversity and population structure
- Botanical Studies and Applications
- Soil Carbon and Nitrogen Dynamics
- Satellite Image Processing and Photogrammetry
SUNY Fredonia
2006-2025
Mitchell Community College
2025
Mesa Community College
2007
University of Nevada, Las Vegas
2002-2003
Oracle (United States)
2002-2003
Columbia University
2002-2003
University of Nevada, Reno
2002
Sewanee: The University of the South
2000
Oregon Zoo
1999
University of Washington
1995-1998
TITus, J. H. (Savannah River Ecology Laboratory, Drawer E, Aiken, SC 29802). Microtopography and the regeneration of woody plants in a hardwood floodplain swamp Florida. Bull. Torrey Bot. Club 117: 429-437. 1990.-Seedling distribution relation to 18 different microtopographic features, relative elevation, percent canopy cover was determined for species c 100 cm tall Fraxinus caroliniana Mill, Nyssa sylvatica var. biflora (Walt.) Sarg., Sabal palmetto Lodd. dominated northern Distribution...
The fundamental goal of a rare plant translocation is to create self-sustaining populations with the evolutionary resilience persist in long term. Yet, most syntheses focus on few factors influencing short-term benchmarks success (e.g., survival and reproduction). Short-term can be misleading when trying infer future growth viability because that promote establishment may differ from those required for long-term persistence. We assembled large (n = 275) broadly representative data set...
Abstract. The north slope of Mount St. Helens was sampled with 141 circular 100‐m 2 plots to describe vegetation and environmental patterns 13 yr after the 1980 eruption. At least 114 vascular plant taxa were encountered. We recognized four habitat types: Refugia, Pumice barrens, Pyroclastic surfaces Drainages. A fifth category, Lupine patches, includes samples on primary that rapidly colonized. Refugia provided small enclaves where underground portions several species survived They retained...
Abstract Questions Is conifer colonization on primary successional sites limited by propagule availability or environmental filters? How do nitrogen‐fixing pioneer species ( L upinus lepidus and A lnus viridis ) affect emergence establishment? Location Mount St. Helens, W ashington State, USA . Methods We planted seeds of P seudotsuga menziesii in four habitat types – barrens, young old patches thickets a partial factorial cross with shade soil disturbance treatments 2002, 2003 2004,...
Abstract Conservation translocations are an established method for reducing the extinction risk of plant species through intentional movement within or outside indigenous range. Unsuitable environmental conditions at translocation recipient sites and a lack understanding species–environment relationships often identified as critical barriers to success. However, previous syntheses have drawn these inferences from analyses qualitative feedback rather than quantitative data. In this study, we...
Abstract. We examined the factors that control seedling establishment on barren substrates pyroclastic flows from Mount St. Helens. From June to September in 1993, we monitored and microhabitat changes 240 20 cm × quadrats Pumice Plain. Seedlings emerged 104 (43.3 %). The most abundant species were Anaphalis margaritacea, Hypochaeris radicata, Lupinus lepidus Epilobium angustifolium . Measured site characteristics included topography, particle size distribution, ground surface movements,...
This study was designed to examine the role of vesicular-arbuscular mycorrhizae (VAM) and microsites on growth pioneer species. Flat, rill, near-rock, dead lupine were created in plots barren areas Pumice Plain Mount St. Helens. VAM propagules added soil half plots. Six species planted into both non-VAM inoculated microsites. Plants greater biomass than those flat, near-rock Significant effects plant did not occur. Microsites continue be important colonization Plain, but do yet appear play...
Background The effect of low nutrient availability on plant-consumer interactions during early succession is poorly understood. productivity and complexity primary successional communities are expected to limit diversity abundance arthropods, but few studies have examined arthropod responses enhanced supply in this context. We investigated the effects nitrogen (N) phosphorus (P) addition plant 24-yr-old soils at Mount St. Helens volcano. Methodology/Principal Findings measured relative eight...
In a wet oligotrophic meadow located in the Czech Republic, factorial experiment with treatments consisting of fertilization, mowing, and removal dominant species ( Molinia caerulea ) was established 1994. 1997 Holcus lanatus, caerulea, Potentilla erecta, Prunella vulgaris, Ranunculus auricomus were examined for arbuscular mycorrhizal (AM) hyphae, arbuscles, vesicles three times over season. Time had significant effect on AM all five species. Except modal occurred, second sampling having...
Vesicular-arbuscular mycorrhizae (VAM) are present in most terrestrial ecosystems and play a major role community structure function. However, their primary succession remains poorly understood. Two greenhouse studies examined the of VAM Mount St. Helens pioneer species under three nutrient regimes four competitive scenarios. Nutrient levels were complete, complete without phosphorus (- P), tap water (very low levels). In negative effect from colonization was observed perhaps due to...
The distribution of woody plant in wetlands may be influenced by topographic microsites that differ flooding duration, substrate composition, moisture retention, canopy cover, nutrient availability, and seed trapping ability. In order to assess the effects on regeneration Bonita Swamp, a wetland Western New York, we conducted an assessment 15 microsite types, survey 400 trees, seedling count using nineteen 100 m2 quadrats 4.3 ha study area. Acer × freemanii E.Murr., Fraxinus pennsylvanica...
Ski slope vegetation on Mount Hood, Oregon, U.S.A. was surveyed to assess that has developed under a constant disturbance regime and the environmental factors are important in structuring vegetation. runs extend from 1200 2200 m south face of Hood. TWINSPAN distinguished 17 plant communities including 4 above treeline 13 below treeline; 3 latter also occur forest adjacent ski runs. Elevation, which is correlated temperature, precipitation, depth snowpack, timing snow melt, most variable Soil...