A5087219925- GaN-based semiconductor devices and materials
- Plant and animal studies
- Soil Carbon and Nitrogen Dynamics
- Ga2O3 and related materials
- Ecology and Vegetation Dynamics Studies
- Soil and Unsaturated Flow
- ZnO doping and properties
- Urban Green Space and Health
- Seedling growth and survival studies
- Soil Management and Crop Yield
- Semiconductor Quantum Structures and Devices
- Soil erosion and sediment transport
- Land Use and Ecosystem Services
- Astro and Planetary Science
- Species Distribution and Climate Change
- Planetary Science and Exploration
- Animal and Plant Science Education
- Urban Agriculture and Sustainability
- Rangeland and Wildlife Management
- Photonic and Optical Devices
- Isotope Analysis in Ecology
- Forest Insect Ecology and Management
- Soil Geostatistics and Mapping
- Organic Light-Emitting Diodes Research
- Powdery Mildew Fungal Diseases
Florida Department of Transportation
2021
University of Sheffield
2010-2020
Purdue University West Lafayette
2019
University of New Hampshire at Manchester
2019
University of Florida
2016
Southwest Florida Research
2016
West Virginia University
1948-2013
Buglife
2012
University of Arkansas at Fayetteville
1986-1997
Southern Illinois University Carbondale
1992
Abstract. As part of a larger survey biodiversity in gardens Sheffield, UK, we examined the composition and diversity flora two 1-m2 quadrats each 60 gardens, compared this with floristic data from semi-natural habitats central England derelict urban land Birmingham, UK. Garden contained more than twice as many taxa those any other habitat type. Ca. 33 % garden plants were natives 67 aliens, mainly Europe Asia. A higher proportion aliens originated Asia New Zealand UK alien whole; 18 20 most...
Abstract. As part of a larger survey biodiversity in gardens Sheffield, UK, we examined the composition and diversity flora two 1‐m 2 quadrats each 60 gardens, compared this with floristic data from semi‐natural habitats central England derelict urban land Birmingham, UK. Garden contained more than twice as many taxa those any other habitat type. Ca. 33 % garden plants were natives 67 aliens, mainly Europe Asia. A higher proportion aliens originated Asia New Zealand UK alien whole; 18 20...
Abstract In response to evidence of insect pollinator declines, organisations in many sectors, including the food and farming industry, are investing conservation. They keen ensure that their efforts use best available science. We convened a group 32 ‘conservation practitioners’ with an active interest pollinators 16 scientists. The conservation practitioners include representatives from UK industry (including retail), environmental non‐government nature agencies. collaboratively developed...
Abstract: Question: How do lawn floras compare with those of semi‐natural grasslands? Are the compositions determined by local, within‐garden factors (e.g. management and size) or regional climate location)? nested (like grasslands) not cultivated parts gardens)? there gradients species composition within lawns? Location: Sheffield, UK. Methods: We examined entire lawns two 1‐m 2 quadrats in 52 gardens. Results: A total 159 vascular plants was recorded, 60 them only once. Most were forbs,...
Question: How do lawn floras compare with those of semi-natural grasslands? Are the compositions determined by local, within-garden factors (e.g. management and size) or regional climate location)? nested (like grasslands) not cultivated parts gardens)? there gradients species composition within lawns? Location: Sheffield, UK. Methods: We examined entire lawns two 1-m2 quadrats in 52 gardens. Results: A total 159 vascular plants was recorded, 60 them only once. Most were forbs, but most...
Abstract 1 An appraisal of non‐native invertebrate plant pest establishments in Great Britain, between 1970 and 2004, was carried out to improve our understanding current invasion processes by pests, assist national strategies managing the risks they pose. 2 A total 164 establishments, comprising 50 natural colonists 114 human‐assisted introductions, were recorded across 13 major taxonomic groups. 3 The mean rate establishment 22.1 species per 5‐year period: 19.1 3.0 outside inside protected...
The most common goal when classing data for choropleth maps is to create homogeneous classes which contain similar values. None of the four traditional methods examined here (quartile, equal interval, standard deviation, and natural breaks) consistently generalized experimental sets into classes. These were accurate with specific distributional characteristics, but none classed all any type distribution accurately. Only optimization method produced reliable results data.
At least as early 1620, American farmers and patriots recognized water erosion a problem attempted to develop practical ways protect their soil (35). During the first two decades of 20th century seriousness was indicated by number agricultural leaders (3, 33). Following publication significant research findings regarding in Missouri (37) Texas (12), an educational campaign United States Department Agriculture under leadership H. Bennett, House Representatives passed Buchanan Amendment...
Optically pumped green lasing with an ultra low threshold has been achieved using InGaN/GaN based micro-disk undercut structure on silicon substrates. The micro-disks a diameter of around 1 μm were fabricated by means combination cost-effective silica micro-sphere approach, dry-etching and subsequent chemical etching. these techniques both minimises the roughness sidewalls also produces excellent circular geometry. Utilizing this fabrication process, at room temperature under optical pumping...
In the United States a widespread belief in necessity for control of soil erosion has led to support vigorous measures by State and ~edera l agencies engaged various phases such control. addition, millions farmers, working individually organized groups, have put into practice conservation ideas developed through scientific research experience. All this effort resulted, particularly during last 30 years, reducing rate loss resource. Although there is general agreement that any represents...
U. S. Department of Agriculture1 1Report on the cooperative project “Erosion Control and Stable Crop Production in Puerto Rico” Rico Agricultural Experiment Station at Rio Piedras Agriculture. Drawings by Servando Silva.
As part of a larger survey biodiversity in private gardens Sheffield, UK, we examined the composition and diversity soil seed banks each 56 gardens. Six cores from garden revealed 2759 seedlings 119 taxa, although real species richness is likely to be much higher than this. By far most abundant were weedy natives, while common alien was Buddleja davidii . Seeds perennial herbs more hundreds all other life forms combined. More frequent also abundant, but relationship weak. Numbers bank flora...