A5103103250- Infrared Target Detection Methodologies
- Calibration and Measurement Techniques
- Atmospheric and Environmental Gas Dynamics
- Atmospheric Ozone and Climate
- Ecology and Vegetation Dynamics Studies
- Spectroscopy and Laser Applications
- Mycorrhizal Fungi and Plant Interactions
- Atmospheric aerosols and clouds
- Atmospheric chemistry and aerosols
- Meteorological Phenomena and Simulations
- Plant Pathogens and Fungal Diseases
- Plant and animal studies
- Rangeland and Wildlife Management
- Fire effects on ecosystems
- Terahertz technology and applications
- Radiative Heat Transfer Studies
- Advanced Measurement and Detection Methods
- Plant Parasitism and Resistance
- Photocathodes and Microchannel Plates
- Water Quality Monitoring Technologies
- Software Reliability and Analysis Research
- Aerospace Engineering and Energy Systems
- Impact of Light on Environment and Health
- Software Engineering Research
- Plant pathogens and resistance mechanisms
Smithsonian Tropical Research Institute
2020-2023
University of California, Santa Barbara
2020-2023
Stanford University
2014-2022
Smithsonian Institution
2020
Ontar (United States)
1997-2014
University of Michigan–Ann Arbor
2014
Nineteen ninety-eight marks the 25th anniversary of release first HITRAN database. is recognized as international standard fundamental spectroscopic parameters for diverse atmospheric and laboratory transmission radiance calculations. There have been periodic editions over past decades database has expanded improved with respect to molecular species spectral range covered, number included, accuracy this information. The 1996 edition not only includes customary line-by-line transition...
Premise Interactions between fungal endophytes and their host plants present useful systems for identifying important factors affecting assembly of host‐associated microbiomes. Here we investigated the role secondary chemistry in mediating affinity asymptomatic foliar endophytic fungi using Psychotria spp. Theobroma cacao (cacao) as hosts. Methods First, surveyed communities species a natural common garden culture‐based methods. Then compared differences community composition with same...
Abstract Empirical studies show that plant-soil feedbacks (PSF) can generate negative density dependent (NDD) recruitment capable of maintaining plant community diversity at landscape scales. However, the observation common plants often exhibit relatively weaker NDD than rare local scales is difficult to reconcile with maintenance overall diversity. We develop a spatially explicit simulation model tracks dynamics microbial mutualists, pathogens, and their hosts. find net PSF effects vary as...
Abstract Interactions between plants and their root‐associated fungi (RAF) may influence the relative abundance of tree species determine forest community diversity. Such plant–soil feedbacks in turn depend on degree to which spatial distance phylogenetic relatedness host trees structure pathogen mutualist communities, but research detailing these aspects RAF communities is lacking. Here, we characterize plant–RAF associations across a diverse plant community, focusing are structured by...
Oak woodlands of Mediterranean ecosystems, a major component biodiversity hotspots in Europe and North America, have undergone significant land-use change recent centuries, including an increase grazing intensity due to the widespread presence cattle. Simultaneously, decrease oak regeneration has been observed, suggesting link between cattle limited regeneration. In this study we examined effect on coast live (Quercus agrifolia Née) San Francisco Bay Area, California. We studied seedling,...
Soil microbes impact plant community structure and diversity through plant-soil feedbacks. However, linking the relative abundance of pathogens mutualists to differential recruitment remains challenging. Here, we tested for microbial mediation pairwise feedback using a reciprocal transplant experiment in lowland tropical forest Panama paired with amplicon sequencing soil roots. We found evidence that species identity alters community, these changes composition alter subsequent growth...
Dioecious tropical tree species often have small flowers and fleshy fruits indicative of small-insect pollination vertebrate seed dispersal. We hypothesize that mediated gene flow should be exceed pollen-mediated in such species, leading to weak patterns fine scale spatial genetic structure (SGS). In the present study, we characterize novel microsatellite DNA markers test for SGS sapling (N=100) adult trees (N=99) dioecious canopy Pouteria reticulata (Sapotaceae) a 50 ha forest dynamics plot...
Lowland tropical rainforests harbor the most diverse plant communities in world, but herbaceous plants of understory are often overlooked. To address this knowledge gap, we asked to what extent community contributes species richness and phylogenetic diversity by surveying a neotropical rainforest at Los Tuxtlas, Mexico. We used Gentry transects characterize woody overstory community, line-intercepts within same survey herbs subshrubs. also published phylogenies calculate with without...
Abstract While insect populations are simultaneously threatened by many local‐ and global‐scale stressors, the interacting effects of these factors remain poorly understood. These interactions between whether additive or antagonistic, may have profound on our assumptions about predictions for any given system. Here we address this gap exploring interactive introduced predators elevated temperatures emerging aquatic insects across alpine lakes. Using a crossed factorial field survey, examine...
NIRATAM (the NATO Infrared Air Target Model) was developed by the AC 243, Panel IV, Research Study Group 6 (RSG-6). RSG-6 is composed of representatives from Denmark, France, Germany, Italy, Netherlands, United Kingdom, States America, and Canada (as an observer). based on theoretical studies, field measurements, infrared data analysis performed over many years. The model encompasses all major signature components required to simulate aircraft atmosphere. vehicle fuselage, facet, includes...
Abstract Interactions between plants and root‐associated fungi can affect the assembly, diversity, relative abundances of tropical plant species. Host–symbiont compatibility some degree host specificity are prerequisites for these processes to occur, may vary with abundance. However, direct assessments whether varies abundance lacking. Here, in a diverse forest Los Tuxtlas, Mexico, we couple DNA metabarcoding sampling design that controls phylogeny, age, habitat variation, characterize...
This paper will focus on the effect of atmospheric conditions EO sensor performance using computer models. We have shown importance accurately modeling effects for predicting an sensor. A simple example has demonstrated how real several US sites significantly change Probability Detection, and hence Recognition Identification. The current state-of-the-art model computing transmission radiance is, MODTRAN® 5, developed by Air Force Research Laboratory Spectral Science, Inc. Force, Navy Army...
Wildfire dynamics are changing around the world and understanding their effects on ecological communities landscapes is urgent important. We report detailed food webs for unburned, low-to-moderate high severity burned habitats three years post-fire in Eldorado National Forest, California. The cumulative cross-habitat web contains 3,084 ontogenetic stages (nodes) or plant parts comprising 849 species (including 107 primary producers, 634 invertebrates, 94 vertebrates). There were 178,655...
A new edition of the HITRAN molecular spectroscopic database and high-temperature analog (HITEMP) have recently been released. 1,2 They are included in a compilation called HAWKS (HITRAN Atmospheric Workstation). represents more fully “matter” database. Besides an updated high-resolution about one million transitions, there files aerosol indices refraction, UV line-by-line cross-section parameters, supplemental gases such as ionic species ozone parameters suitable for atmospheric non-local...
This paper will focus on the effect of atmospheric conditions EO sensor performance using computer models. We have shown importance accurately modeling effects for predicting an sensor. A simple example demonstrated how real several sites in China significantly impact image correction, hyperspectral imaging, and remote sensing. The current state-of-the-art model computing transmission radiance is, MODTRAN® 5, developed by US Air Force Research Laboratory Spectral Science, Inc. Force, Navy...
US Navy and Marine Corps pilots receive Night Vision Goggle (NVG) training as part of their overall to maintain the superiority our forces. This must incorporate realistic targets; backgrounds; representative atmospheric weather effects they may encounter under operational conditions. An approach for pilot NVG is use Imaging Threat Evaluation Laboratory (NITE Lab) concept. The NITE Labs utilize a 10' by static terrain model equipped with both natural cultural lighting that are used...
US Navy and Marine Corps pilots receive Night Vision Goggle (NVG) training as part of their overall to maintain the superiority our forces. This must incorporate realistic targets; backgrounds; representative atmospheric weather effects they may encounter under operational conditions. An approach for pilot NVG is use Imaging Threat Evaluation Laboratory (NITE Lab) concept. The NITE Labs utilize a 10' by static terrain model equipped with both natural cultural lighting that are used...
Ontar Corporation is a research and development company specializing in the of products for atmospheric remote sensing. Over past two decades, has been leading supplier software meteorological applications sensing, radiative transport propagation. Ontar's complete line modeling varying weather conditions includes MS Windows-based PcModWin, PcLnWin, HitranPC, E-Trans, NVTherm, IICCD, IIMRC SSCAM software, as well JavaHAWKS, HITRAN database manipulator. This paper will describe both updates to...
The U.S. Army has a requirement to develop systems for the detection and identification of ground targets in clutter environment. Autonomous Homing Munitions (AHM) using infrared, visible, millimeter wave other sensors are being investigated this application. Advanced signal processing computational approaches pattern recognition artificial intelligence techniques combined with multisensor data fusion have potential meet Army's requirements next generation AHM. In complex background scene...
A new user-friendly software product called the Atmospheric Laser Turbulence Model (ALTM) has been developed at University of Central Florida and is distributed through Ontar Corporation (www.ontar.com) to provide Gaussian-beam wave propagation models for calculating various beam characteristics in presence atmospheric turbulence. The calculations are valid any horizontal path which index refraction structure parameter Cn2 can be taken as a constant. Two choices model available user-the...