A5049758476- Botany, Ecology, and Taxonomy Studies
- Rangeland and Wildlife Management
- Archaeology and Natural History
- Ecology and Vegetation Dynamics Studies
- Species Distribution and Climate Change
- Plant and animal studies
- Fire effects on ecosystems
- Wildlife Ecology and Conservation
- Botany and Plant Ecology Studies
- Plant Taxonomy and Phylogenetics
- Marine and environmental studies
- Plant Pathogens and Fungal Diseases
- Plant Pathogens and Resistance
- Coastal wetland ecosystem dynamics
- Fish Ecology and Management Studies
- Hydrocarbon exploration and reservoir analysis
- Land Use and Ecosystem Services
- Geology and Paleoclimatology Research
- Forest ecology and management
- Hydrology and Sediment Transport Processes
- Plant Toxicity and Pharmacological Properties
- Peatlands and Wetlands Ecology
- Flowering Plant Growth and Cultivation
- Insect and Pesticide Research
- Plant Ecology and Taxonomy Studies
University of Oklahoma
2011-2023
National University of Comahue
2023
Oklahoma Biological Survey
2008-2020
Native Health
2020
North Carolina Natural Heritage Program
2019
Rocky Mountain Research (United States)
2016
Southeastern Oklahoma State University
2005-2016
Rocky Mountain Research Station
2016
United States Department of Agriculture
2002-2016
Oklahoma City University
2016
Abstract A substantial body of literature has accumulated on the topic estimation species richness by extrapolation. However, most these methods rely an objective sampling nature. This condition is difficult to meet and seldom achieved for large regions. Furthermore, scientists conducting biological surveys often already have preliminary but subjectively gathered lists, would like assess completeness such and/or find a way perfect them. We propose several strategies utilizing external data...
A vegetation classification approach is needed that can describe the diversity of terrestrial ecosystems and their transformations over large time frames, span full range spatial geographic scales across globe, provide knowledge reference conditions current states required to make decisions about conservation resource management. We summarize scientific basis for EcoVeg, a physiognomic‐floristic‐ecological applies existing vegetation, both cultural (planted dominated by human processes)...
Abstract Aim To determine if the temporal and spatial pattern of alien plant invasion native expansion can be observed using 100 years herbarium data from Oklahoma, USA, to eliminate collection biases in such analyses. Location USA. Methods Using records Oklahoma Vascular Plants Database 1903 2004, we reconstructed history two invasive taxa ( Lonicera japonica Tamarix spp.) three expansive species Ambrosia psilostachya , Amphiachyris dracunculoides Juniperus virginiana ). compare overall...
Abstract Climate change, interacting with and exacerbating anthropogenic modifications to the landscape, is altering ecosystem structure function, biodiversity, species distributions. Among most visible short‐term impacts are altered ecological roles of foundation species—those species, native or non‐native—that create locally stable environmental conditions strongly influence services. Understanding future these crucial for projecting on services at both local regional scales. Here we...
Oikos 78: 23-30. Two general models of plant community structure, the community-unit and continuum, have dominated thinking American ecologists. Hy- potheses derived from these other structure rarely been tested, however. Traditionally, analyses gradient focused primarily on whether or not boundaries species response curves are clustered, which does provide a complete picture structure. In this study, we statistically analyzed three characteristics along gradi- ents (1) pattern...
Accurately mapping the spatial distribution of forests in sub-humid to semi-arid regions over time is important for forest management but a challenging task. Relatively large uncertainties still exist and changes regions. Numerous publications have used either optical or synthetic aperture radar (SAR) remote sensing imagery, resultant cover maps often errors. In this study, we propose pixel- rule-based algorithm identify map annual from 2007 2010 Oklahoma, USA, transitional region with...
ABSTRACT In 1820, the lower Canadian River meandered through a densely forested floodplain. By 1898, most of floodplain had been cleared for agriculture and changes in channel geometry specific stream power followed, particularly widening straightening with potential power. 1964, large upstream hydropower dam was constructed, which changed flow regime consequently geometry. Without destructive overbank floods, narrowed rapidly considerably due to encroachment by vegetation. The River, once...
This paper reports the results of an inventory vascular plants at Red Slough and Grassy Wildlife Management Areas in southeastern Oklahoma. A total 426 taxa 269 genera 106 families was collected. The most species were collected from Asteraceae (53), Poaceae (42), Cyperaceae (31), Fabaceae (27). Ninety-nine annuals or biennials, 328 perennials. Ninety-three woody present. Twenty-eight not native to North America representing 6.6% flora. Thirty tracked by Oklahoma Natural Heritage Inventory...
This paper reports the results of an inventory vascular plants at Keystone Wildlife Management Area in northeasternOklahoma.A total 380 taxa 254 genera and 79 families were collected.The most species collected from Poaceae (58), Asteraceae (57), Fabaceae (30).There 160 annual 220 perennial species.Fifty-six woody present.A 59 exotic representing 15% flora.No tracked by Oklahoma Natural Heritage Inventory for rarity found.
This paper reports the results of an inventory vascular plants at Hugo Wildlife Management Area in southeastern Oklahoma. A total 573 specific and interspecific taxa 359 genera 113 families were collected. The most commonly collected Poaceae (75), Asteraceae (76), Fabaceae (40), Cyperaceae (38). One hundred sixty-four species annuals or biennials, 409 perennials. Ninety-seven woody present. Fifty-one exotic representing 9% flora. Fourteen tracked by Oklahoma Natural Heritage Inventory found....
Public Land Survey ( PLS ) data have been widely used in landscape studies of forest and woodlands the pre‐ early‐ E uropean‐settled Midwestern Western U nited S tates. We aim to reconstruct presettlement vegetation at a finer spatial resolution than available from using environmental covariates (slope, aspect, geology, soil type) spatially correlated structure witness tree data. To accommodate various obtained multiple sources while explicitly taking into account their structures, we adopt...
Abstract. We examined the role of playa lakes in promoting regional heterogeneity on southern High Plains. The goals this paper were to: (1) describe vegetation types and zonation patterns within playas, (2) evaluate species distribution abundance among (3) assess playas a portion Perennial grasses most abundant vegetation. Playa exhibited distinct repeatable zones at majority sites, but number varied from site to site. Agropyron smithii, Buchloë dactyloides , Panicum obtusum important...
This paper reports the results of a vascular plant inventory at University Oklahoma's Kessler Atmospheric and Ecological Field Station in McClain County state Oklahoma.A total 388 taxa 80 families were collected.Two hundred fifty-seven genera, 361 species, 27 infraspecific identified.The largest Poaceae with 66 Asteraceae 55 taxa.Fifty-seven planted or non-native to U.S. (14.7 % flora).Four tracked by Oklahoma Natural Heritage Inventory found.