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https://www.readbyqxmd.com/read/28527153/the-rise-of-phenology-with-climate-change-an-evaluation-of-ijb-publications
#1
Alison Donnelly, Rong Yu
In recent decades, phenology has become an important tool by which to measure both the impact of climate change on ecosystems and the feedback of ecosystems to the climate system. However, there has been little attempt to date to systematically quantify the increase in the number of scientific publications with a focus on phenology and climate change. In order to partially address this issue, we examined the number of articles (original papers, reviews and short communications) containing the terms 'phenology' and 'climate change' in the title, abstract or keywords, published in the International Journal of Biometeorology in the 60 years since its inception in 1957...
May 19, 2017: International Journal of Biometeorology
https://www.readbyqxmd.com/read/28520757/predicting-above-ground-density-and-distribution-of-small-mammal-prey-species-at-large-spatial-scales
#2
Lucretia E Olson, John R Squires, Robert J Oakleaf, Zachary P Wallace, Patricia L Kennedy
Grassland and shrub-steppe ecosystems are increasingly threatened by anthropogenic activities. Loss of native habitats may negatively impact important small mammal prey species. Little information, however, is available on the impact of habitat variability on density of small mammal prey species at broad spatial scales. We examined the relationship between small mammal density and remotely-sensed environmental covariates in shrub-steppe and grassland ecosystems in Wyoming, USA. We sampled four sciurid and leporid species groups using line transect methods, and used hierarchical distance-sampling to model density in response to variation in vegetation, climate, topographic, and anthropogenic variables, while accounting for variation in detection probability...
2017: PloS One
https://www.readbyqxmd.com/read/28518067/remote-sensing-evaluation-of-two-spotted-spider-mite-damage-on-greenhouse-cotton
#3
Daniel E Martin, Mohamed A Latheef
The objective of this study was to evaluate a ground-based multispectral optical sensor as a remote sensing tool to assess foliar damage caused by the two-spotted spider mite (TSSM), Tetranychus urticae Koch, on greenhouse grown cotton. TSSM is a polyphagous pest which occurs on a variety of field and horticultural crops. It often becomes an early season pest of cotton in damaging proportions as opposed to being a late season innocuous pest in the mid-southern United States. Evaluation of acaricides is important for maintaining the efficacy of and preventing resistance to the currently available arsenal of chemicals and newly developed control agents...
April 28, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28515883/correlating-species-and-spectral-diversities-using-hyperspectral-remote-sensing-in-early-successional-fields
#4
Itiya P Aneece, Howard Epstein, Manuel Lerdau
Advances in remote sensing technology can help estimate biodiversity at large spatial extents. To assess whether we could use hyperspectral visible near-infrared (VNIR) spectra to estimate species diversity, we examined the correlations between species diversity and spectral diversity in early-successional abandoned agricultural fields in the Ridge and Valley ecoregion of north-central Virginia at the Blandy Experimental Farm. We established plant community plots and collected vegetation surveys and ground-level hyperspectral data from 350 to 1,025 nm wavelengths...
May 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28515537/estimating-spatially-distributed-turbulent-heat-fluxes-from-high-resolution-thermal-imagery-acquired-with-a-uav-system
#5
Claire Brenner, Christina Elisabeth Thiem, Hans-Dieter Wizemann, Matthias Bernhardt, Karsten Schulz
In this study, high-resolution thermal imagery acquired with a small unmanned aerial vehicle (UAV) is used to map evapotranspiration (ET) at a grassland site in Luxembourg. The land surface temperature (LST) information from the thermal imagery is the key input to a one-source and two-source energy balance model. While the one-source model treats the surface as a single uniform layer, the two-source model partitions the surface temperature and fluxes into soil and vegetation components. It thus explicitly accounts for the different contributions of both components to surface temperature as well as turbulent flux exchange with the atmosphere...
May 19, 2017: International Journal of Remote Sensing
https://www.readbyqxmd.com/read/28514080/methane-emission-from-feather-moss-stands
#6
Dheeraj Kanaparthi, Andreas Reim, Guntars O Martinson, Bianca Pommerenke, Ralf Conrad
Data from remote sensing and Eddy towers indicate that forests are not always net sinks for atmospheric CH4 . However, studies describing specific sources within forests and functional analysis of microorganisms on sites with CH4 turnover are scarce. Feather moss stands were considered to be net sinks for carbon dioxide, but received little attention to their role in CH4 cycling. Therefore, we investigated methanogenic rates and pathways together with the methanogenic microbial community composition in feather moss stands from temperate and boreal forests...
May 17, 2017: Global Change Biology
https://www.readbyqxmd.com/read/28511272/a-location-specific-spreadsheet-for-estimating-zika-risk-and-timing-for-zika-vector-surveillance-using-us-military-facilities-as-an-example
#7
Desmond H Foley, David B Pecor
Local Zika virus transmission in the United States involving one or both of the known vector species, Aedes aegypti and Ae. albopictus, is of major concern. To assist efforts to anticipate the risks of transmission, we developed an Excel spreadsheet tool that uses vector and virus temperature thresholds, remotely sensed maximum temperature, and habitat suitability models to answer the questions: "is Zika transmission likely here?" and "when should we conduct vector surveillance?" An example spreadsheet, updated regularly and freely available, uses near real-time and forecast temperature data to generate guidance, based on a novel four level Zika risk code, for 733 US military facilities in the 50 states, the District of Columbia, and the territories of Guam and Puerto Rico...
January 2017: U.S. Army Medical Department Journal
https://www.readbyqxmd.com/read/28510602/tree-based-approach-for-exploring-marine-spatial-patterns-with-raster-datasets
#8
Xiaohan Liao, Cunjin Xue, Fenzhen Su
From multiple raster datasets to spatial association patterns, the data-mining technique is divided into three subtasks, i.e., raster dataset pretreatment, mining algorithm design, and spatial pattern exploration from the mining results. Comparison with the former two subtasks reveals that the latter remains unresolved. Confronted with the interrelated marine environmental parameters, we propose a Tree-based Approach for eXploring Marine Spatial Patterns with multiple raster datasets called TAXMarSP, which includes two models...
2017: PloS One
https://www.readbyqxmd.com/read/28508259/investigation-of-the-scaling-characteristics-of-landsat-temperature-and-vegetation-data-a-wavelet-based-approach
#9
Maheswaran Rathinasamy, V M Bindhu, Jan Adamowski, Balaji Narasimhan, Rakesh Khosa
An investigation of the scaling characteristics of vegetation and temperature data derived from LANDSAT data was undertaken for a heterogeneous area in Tamil Nadu, India. A wavelet-based multiresolution technique decomposed the data into large-scale mean vegetation and temperature fields and fluctuations in horizontal, diagonal, and vertical directions at hierarchical spatial resolutions. In this approach, the wavelet coefficients were used to investigate whether the normalized difference vegetation index (NDVI) and land surface temperature (LST) fields exhibited self-similar scaling behaviour...
May 16, 2017: International Journal of Biometeorology
https://www.readbyqxmd.com/read/28505264/geographical-information-systems-in-determination-of-cutaneous-leishmaniasis-spatial-risk-level-based-on-distribution-of-vector-species-in-imamoglu-province-adana
#10
Hakan Kavur, Ozan Artun
The Imamoglu district located in the southeast of Adana province in Turkey is an endemic focus of cutaneous leishmaniasis (CL) owing to dominancy of Phlebotomus tobbi, which is a probable vector of Leishmania infantum. About 11.26% of CL cases reported each year are from Imamoglu, Adana, and between 2008 and 2015, 223 cases of CL were reported. Leishmania infantum, which may be transmitted by P. tobbi, Phlebotomus neglectus/syriacus, and Phlebotomus perfiliewi, is referred as leishmaniasis factor in Adana. Thus, the aim of this study was to map the risk areas for each sand fly species using remote sensing images based on environmental factors and geographical characteristics...
May 13, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28505192/large-herbivores-in-novel-ecosystems-habitat-selection-by-red-deer-cervus-elaphus-in-a-former-brown-coal-mining-area
#11
Anke Müller, Maria Dahm, Peder Klith Bøcher, Meredith Root-Bernstein, Jens-Christian Svenning
After centuries of range contraction, many megafauna species are recolonizing parts of Europe. One example is the red deer (Cervus elaphus), which was able to expand its range and is now found in half the areas it inhabited in the beginning of the 19th century. Herbivores are important ecosystem engineers, influencing e.g. vegetation. Knowledge on their habitat selection and their influence on ecosystems might be crucial for future landscape management, especially for hybrid and novel ecosystems emerging in post-industrial landscapes...
2017: PloS One
https://www.readbyqxmd.com/read/28505135/sea-ice-detection-based-on-an-improved-similarity-measurement-method-using-hyperspectral-data
#12
Yanling Han, Jue Li, Yun Zhang, Zhonghua Hong, Jing Wang
Hyperspectral remote sensing technology can acquire nearly continuous spectrum information and rich sea ice image information, thus providing an important means of sea ice detection. However, the correlation and redundancy among hyperspectral bands reduce the accuracy of traditional sea ice detection methods. Based on the spectral characteristics of sea ice, this study presents an improved similarity measurement method based on linear prediction (ISMLP) to detect sea ice. First, the first original band with a large amount of information is determined based on mutual information theory...
May 15, 2017: Sensors
https://www.readbyqxmd.com/read/28504756/active-modulation-of-the-terahertz-spectra-radiated-from-two-air-plasmas
#13
Ying Zhang, Wenfeng Sun, Xinke Wang, Jiasheng Ye, Shengfei Feng, Peng Han, Yan Zhang
A simple and energy-saving method has been proposed to actively modulate the spectra of terahertz (THz) waves radiated from two serial plasmas, which uses the background light to generate one plasma to make full use of the energy of the femtosecond laser. With this method, the modulation of the central frequency, spectral bandwidth, and spectral profile of the output THz waves have been observed. The shifting of the amplitude dip has been manipulated by changing the distance of the two serial plasmas. The manipulation results agree with the ones simulated by the transition-Cherenkov model...
May 15, 2017: Optics Letters
https://www.readbyqxmd.com/read/28504244/mid-infrared-coincidence-measurements-on-twin-photons-at-room-temperature
#14
M Mancinelli, A Trenti, S Piccione, G Fontana, J S Dam, P Tidemand-Lichtenberg, C Pedersen, L Pavesi
Quantum measurements using single-photon detectors are opening interesting new perspectives in diverse fields such as remote sensing, quantum cryptography and quantum computing. A particularly demanding class of applications relies on the simultaneous detection of correlated single photons. In the visible and near infrared wavelength ranges suitable single-photon detectors do exist. However, low detector quantum efficiency or excessive noise has hampered their mid-infrared (MIR) counterpart. Fast and highly efficient single-photon detectors are thus highly sought after for MIR applications...
May 15, 2017: Nature Communications
https://www.readbyqxmd.com/read/28501745/paper-based-diagnostics-for-personalized-health-care-emerging-technologies-and-commercial-aspects
#15
REVIEW
Kuldeep Mahato, Ananya Srivastava, Pranjal Chandra
Personalized health care (PHC) is being appreciated globally to combat clinical complexities underlying various metabolic or infectious disorders including diabetes, cardiovascular, communicable diseases etc. Effective diagnoses majorly depend on initial identification of the causes which are nowadays being practiced in disease-oriented approach, where personal health profile is often overlooked. The adoption of PHC has shown significantly improved diagnoses in various conditions including emergency, ambulatory, and remote area...
May 1, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28501014/discrimination-between-acute-and-chronic-decline-of-central-european-forests-using-map-algebra-of-the-growth-condition-and-forest-biomass-fuzzy-sets-a-case-study
#16
Pavel Samec, Jan Caha, Miloš Zapletal, Pavel Tuček, Pavel Cudlín, Miloš Kučera
Forest decline is either caused by damage or else by vulnerability due to unfavourable growth conditions or due to unnatural silvicultural systems. Here, we assess forest decline in the Czech Republic (Central Europe) using fuzzy functions, fuzzy sets and fuzzy rating of ecosystem properties over a 1×1km grid. The model was divided into fuzzy functions of the abiotic predictors of growth conditions (Fpred including temperature, precipitation, acid deposition, soil data and relative site insolation) and forest biomass receptors (Frec including remote sensing data, density and volume of aboveground biomass, and surface humus chemical data)...
May 10, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28495218/effects-of-hippocampal-low-frequency-stimulation-in-idiopathic-non-human-primate-epilepsy-assessed-via-a-remote-sensing-enabled-neurostimulator
#17
Thomas A Wozny, Witold J Lipski, Ahmad Alhourani, Efstathios D Kondylis, Arun Antony, R Mark Richardson
Individuals with pharmacoresistant epilepsy remain a large and under-treated patient population. Continued technologic advancements in implantable neurostimulators have spurred considerable research efforts directed towards the development of novel antiepileptic stimulation therapies. However, the lack of adequate preclinical experimental platforms has precluded a detailed understanding of the differential effects of stimulation parameters on neuronal activity within seizure networks. In order to chronically monitor seizures and the effects of stimulation in a freely-behaving non-human primate with idiopathic epilepsy, we employed a novel simultaneous video-intracranial EEG recording platform using a state-of-the-art sensing-enabled, rechargeable clinical neurostimulator with real-time seizure detection and wireless data streaming capabilities...
May 7, 2017: Experimental Neurology
https://www.readbyqxmd.com/read/28492517/first-nations-approaches-to-childhood-obesity-healthy-lifestyles-in-canada-compared-with-alternatives-for-alaska-native-communities
#18
Peter A de Schweinitz, Janet M Wojcicki
Alaska Native and American Indian children have among the highest prevalence of obesity in the United States. Canadian Aboriginal populations including First Nations also have high rates of obesity but obesity rates among children are noticeably lower. We highlight some of the important differences between American and Canadian approaches to healthy lifestyles and Aboriginal/Native health, including diet and physical activity, which may in part explain the differences in obesity prevalence. Specifically, the Canadian government provides a food subsidy program to bring perishable fruits and vegetable to remote, rural Canadian areas and secondly supports the use of traditional foods and harvesting/gathering through a number of government supported programs...
May 11, 2017: Children
https://www.readbyqxmd.com/read/28492515/remote-sensing-for-crop-water-management-from-et-modelling-to-services-for-the-end-users
#19
REVIEW
Alfonso Calera, Isidro Campos, Anna Osann, Guido D'Urso, Massimo Menenti
The experiences gathered during the past 30 years support the operational use of irrigation scheduling based on frequent multi-spectral image data. Currently, the operational use of dense time series of multispectral imagery at high spatial resolution makes monitoring of crop biophysical parameters feasible, capturing crop water use across the growing season, with suitable temporal and spatial resolutions. These achievements, and the availability of accurate forecasting of meteorological data, allow for precise predictions of crop water requirements with unprecedented spatial resolution...
May 11, 2017: Sensors
https://www.readbyqxmd.com/read/28489925/do-the-brazilian-sardine-commercial-landings-respond-to-local-ocean-circulation
#20
Mainara B Gouveia, Douglas F M Gherardi, Carlos A D Lentini, Daniela F Dias, Paula C Campos
It has been reported that sea surface temperature (SST) anomalies, flow intensity and mesoscale ocean processes, all affect sardine production, both in eastern and western boundary current systems. Here we tested the hypothesis whether extreme high and low commercial landings of the Brazilian sardine fisheries in the South Brazil Bight (SBB) are sensitive to different oceanic conditions. An ocean model (ROMS) and an individual based model (Ichthyop) were used to assess the relationship between oceanic conditions during the spawning season and commercial landings of the Brazilian sardine one year later...
2017: PloS One
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