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https://www.readbyqxmd.com/read/29692023/-effects-of-exogenous-growth-regulators-on-plant-elongation-and-carbohydrate-consumption-of-rice-seedlings-under-submergence
#1
Hui Wu, Jing Xiang, Hui Zhe Chen, Yu Ping Zhang, Yi Kai Zhang, De Feng Zhu
This experiment was conducted to evaluate the effects of exogenous regulators on plant elongation and carbohydrate consumption of rice seedlings under submergence. IR64 and IR64-Sub1 with submergence tolerance gene Sub1 were used. Twenty-day-old seedlings were sprayed with 1-aminocyclopropane-1-carboxylic acid (ACC), paclobutrazol (PB), gibberellic acid (GA), or distilled water (as control) two days prior to the submergence. Plants were completely submerged and water depth was maintained for 0, 4, 8, 12, 16 days respectively in tanks...
January 2018: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
https://www.readbyqxmd.com/read/29657746/a-framework-for-estimating-the-determinants-of-spatial-and-temporal-variation-in-vital-rates-and-inferring-the-occurrence-of-unobserved-extreme-events
#2
Simone Vincenzi, Dušan Jesenšek, Alain J Crivelli
We develop a general framework that combines long-term tag-recapture data and powerful statistical and modelling techniques to investigate how population, environmental and climate factors determine variation in vital rates and population dynamics in an animal species, using as a case study the population of brown trout living in Upper Volaja (Western Slovenia). This population has been monitored since 2004. Upper Volaja is a sink, receiving individuals from a source population living above a waterfall. We estimate the numerical contribution of the source population on the sink population and test the effects of temperature, population density and extreme events on variation in vital rates among 2647 individually tagged brown trout...
March 2018: Royal Society Open Science
https://www.readbyqxmd.com/read/29562657/how-to-improve-fault-tolerance-in-disaster-predictions-a-case-study-about-flash-floods-using-iot-ml-and-real-data
#3
Gustavo Furquim, Geraldo P R Filho, Roozbeh Jalali, Gustavo Pessin, Richard W Pazzi, Jó Ueyama
The rise in the number and intensity of natural disasters is a serious problem that affects the whole world. The consequences of these disasters are significantly worse when they occur in urban districts because of the casualties and extent of the damage to goods and property that is caused. Until now feasible methods of dealing with this have included the use of wireless sensor networks (WSNs) for data collection and machine-learning (ML) techniques for forecasting natural disasters. However, there have recently been some promising new innovations in technology which have supplemented the task of monitoring the environment and carrying out the forecasting...
March 19, 2018: Sensors
https://www.readbyqxmd.com/read/29554783/forensic-hydro-meteorological-analysis-of-an-extreme-flash-flood-the-2016-05-29-event-in-braunsbach-sw-germany
#4
Axel Bronstert, Ankit Agarwal, Berry Boessenkool, Irene Crisologo, Madlen Fischer, Maik Heistermann, Lisei Köhn-Reich, José Andrés López-Tarazón, Thomas Moran, Ugur Ozturk, Christian Reinhardt-Imjela, Dadiyorto Wendi
The flash-flood in Braunsbach in the north-eastern part of Baden-Wuerttemberg/Germany was a particularly strong and concise event which took place during the floods in southern Germany at the end of May/early June 2016. This article presents a detailed analysis of the hydro-meteorological forcing and the hydrological consequences of this event. A specific approach, the "forensic hydrological analysis" was followed in order to include and combine retrospectively a variety of data from different disciplines...
February 28, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29547567/evaluating-the-capability-of-grass-swale-for-the-rainfall-runoff-reduction-from-an-urban-parking-lot-seoul-korea
#5
Muhammad Shafique, Reeho Kim, Kwon Kyung-Ho
This field study elaborates the role of grass swale in the management of stormwater in an urban parking lot. Grass swale was constructed by using different vegetations and local soil media in the parking lot of Mapu-gu Seoul, Korea. In this study, rainfall runoff was first retained in soil and the vegetation layers of the grass swale, and then infiltrated rainwater was collected with the help of underground perforated pipe, and passed to an underground storage trench. In this way, grass swale detained a large amount of rainwater for a longer period of time and delayed peak discharge...
March 16, 2018: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29499545/vulnerability-assessment-including-tangible-and-intangible-components-in-the-index-composition-an-amazon-case-study-of-flooding-and-flash-flooding
#6
Milena Marília Nogueira de Andrade, Claudio Fabian Szlafsztein
The vulnerability of cities and communities in the Amazon to flooding and flash flooding is increasing. The effects of extreme events on populations vary across landscapes, causing vulnerability to differ spatially. Traditional vulnerability studies in Brazil and across the world have used the vulnerability index for the country and, more recently, municipality scales. The vulnerability dimensions are exposure, sensitivity, and adaptive capacity. For each of these dimensions, there is a group of indicators that constitutes a vulnerability index using quantitative data...
July 15, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29426199/a-comparative-assessment-of-decision-trees-algorithms-for-flash-flood-susceptibility-modeling-at-haraz-watershed-northern-iran
#7
Khabat Khosravi, Binh Thai Pham, Kamran Chapi, Ataollah Shirzadi, Himan Shahabi, Inge Revhaug, Indra Prakash, Dieu Tien Bui
Floods are one of the most damaging natural hazards causing huge loss of property, infrastructure and lives. Prediction of occurrence of flash flood locations is very difficult due to sudden change in climatic condition and manmade factors. However, prior identification of flood susceptible areas can be done with the help of machine learning techniques for proper timely management of flood hazards. In this study, we tested four decision trees based machine learning models namely Logistic Model Trees (LMT), Reduced Error Pruning Trees (REPT), Naïve Bayes Trees (NBT), and Alternating Decision Trees (ADT) for flash flood susceptibility mapping at the Haraz Watershed in the northern part of Iran...
June 15, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29210686/a-modelling-study-of-the-event-based-retention-performance-of-green-roof-under-the-hot-humid-tropical-climate-in-kuching
#8
C T Chai, F J Putuhena, O S Selaman
The influences of climate on the retention capability of green roof have been widely discussed in existing literature. However, knowledge on how the retention capability of green roof is affected by the tropical climate is limited. This paper highlights the retention performance of the green roof situated in Kuching under hot-humid tropical climatic conditions. Using the green roof water balance modelling approach, this study simulated the hourly runoff generated from a virtual green roof from November 2012 to October 2013 based on past meteorological data...
December 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/29125248/effects-of-flash-flooding-on-mosquito-and-community-dynamics-in-experimental-pools
#9
C Duchet, G M Moraru, O Segev, M Spencer, A Gershberg Hayoon, L Blaustein
Pulsed disturbances of larval mosquito sites are likely to have a direct negative effect on mosquitoes but may also have indirect effects due to the alteration of community structure. These altered communities may become attractive to gravid mosquitoes searching for oviposition sites when the disturbances decrease the abundance of mosquito antagonists such as competitors, which often results in an increase in mosquito food resources. However, flash flood disturbances in intermittent riverbeds can also remove mosquito food resources such as algae, so that the net effect of flash floods could be either to increase or decrease mosquito abundance...
December 2017: Journal of Vector Ecology: Journal of the Society for Vector Ecology
https://www.readbyqxmd.com/read/29059704/toward-probabilistic-prediction-of-flash-flood-human-impacts
#10
Galateia Terti, Isabelle Ruin, Jonathan J Gourley, Pierre Kirstetter, Zachary Flamig, Juliette Blanchet, Ami Arthur, Sandrine Anquetin
This article focuses on conceptual and methodological developments allowing the integration of physical and social dynamics leading to model forecasts of circumstance-specific human losses during a flash flood. To reach this objective, a random forest classifier is applied to assess the likelihood of fatality occurrence for a given circumstance as a function of representative indicators. Here, vehicle-related circumstance is chosen as the literature indicates that most fatalities from flash flooding fall in this category...
October 23, 2017: Risk Analysis: An Official Publication of the Society for Risk Analysis
https://www.readbyqxmd.com/read/29036896/remote-sensing-based-quantification-of-the-impact-of-flash-flooding-on-the-rice-production-a-case-study-over-northeastern-bangladesh
#11
M Razu Ahmed, Khan Rubayet Rahaman, Aaron Kok, Quazi K Hassan
The northeastern region of Bangladesh often experiences flash flooding during the pre-harvesting period of the boro rice crop, which is the major cereal crop in the country. In this study, our objective was to delineate the impact of the 2017 flash flood (that initiated on 27 March 2017) on boro rice using multi-temporal Landsat-8 OLI and MODIS data. Initially, we opted to use Landsat-8 OLI data for mapping the damages; however, during and after the flooding event the acquisition of cloud free images were challenging...
October 14, 2017: Sensors
https://www.readbyqxmd.com/read/28829530/the-social-construction-of-disasters-in-the-united-states-a-historical-and-cultural-phenomenon
#12
Tonya T Neaves, T Aaron Wachhaus, Grace A Royer
INTRODUCTION: Societal risks from hazards are continually increasing. Each year, disasters cause thousands of deaths and cost billions of dollars. In the first half of 2011, the United States endured countless disasters-winter snowstorms in the Midwest and Northeast; severe tornadic weather in the Mississippi, Alabama, and Missouri; flash flooding in Nashville; flooding along the Mississippi River; an earthquake on the East Coast, wildfires in Texas, and Hurricane Irene. Fundamental disaster planning is regarded as an interdisciplinary approach to develop strategies and instituting policies concerned with phases of emergency management; as such, its needs are predicated on the identification of hazards and assessment of risks...
May 2017: Journal of Emergency Management: JEM
https://www.readbyqxmd.com/read/28821012/multidomain-analyses-of-a-longitudinal-human-microbiome-intestinal-cleanout-perturbation-experiment
#13
Julia Fukuyama, Laurie Rumker, Kris Sankaran, Pratheepa Jeganathan, Les Dethlefsen, David A Relman, Susan P Holmes
Our work focuses on the stability, resilience, and response to perturbation of the bacterial communities in the human gut. Informative flash flood-like disturbances that eliminate most gastrointestinal biomass can be induced using a clinically-relevant iso-osmotic agent. We designed and executed such a disturbance in human volunteers using a dense longitudinal sampling scheme extending before and after induced diarrhea. This experiment has enabled a careful multidomain analysis of a controlled perturbation of the human gut microbiota with a new level of resolution...
August 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28798350/wet-tropical-climate-in-se-tibet-during-the-late-eocene
#14
Philippe Sorrel, Ines Eymard, Philippe-Herve Leloup, Gweltaz Maheo, Nicolas Olivier, Mary Sterb, Loraine Gourbet, Guocan Wang, Wu Jing, Haijian Lu, Haibing Li, Xu Yadong, Kexin Zhang, Kai Cao, Marie-Luce Chevalier, Anne Replumaz
Cenozoic climate cooling at the advent of the Eocene-Oligocene transition (EOT), ~33.7 Ma ago, was stamped in the ocean by a series of climatic events albeit the impact of this global climatic transition on terrestrial environments is still fragmentary. Yet archival constraints on Late Eocene atmospheric circulation are scarce in (tropical) monsoonal Asia, and the paucity of terrestrial records hampers a meaningful comparison of the long-term climatic trends between oceanic and continental realms. Here we report new sedimentological data from the Jianchuan basin (SE Tibet) arguing for wetter climatic conditions in monsoonal Asia at ~35...
August 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28738173/simulating-the-meteorology-and-pm10-concentrations-in-arizona-dust-storms-with-the-weather-research-and-forecasting-model-with-chemistry-wrf-chem
#15
Peter Hyde, Alex Mahalov, Jialun Li
Nine dust storms in south-central Arizona, USA were simulated with the Weather Research and Forecasting with Chemistry model (WRF-Chem) at 2-km resolution. The windblown dust emission algorithm was the Air Force Weather Agency model. In comparison with ground-based PM10 observations, the model unevenly reproduces the dust storm events. The model adequately estimates the location and timing of the events, but it is unable to precisely replicate the magnitude and timing of the elevated hourly concentrations of particles 10 microns and smaller ([PM10])...
July 24, 2017: Journal of the Air & Waste Management Association
https://www.readbyqxmd.com/read/28676799/impact-of-aeolian-dry-deposition-of-reactive-iron-minerals-on-sulfur-cycling-in-sediments-of-the-gulf-of-aqaba
#16
Barak Blonder, Valeria Boyko, Alexandra V Turchyn, Gilad Antler, Uriel Sinichkin, Nadav Knossow, Rotem Klein, Alexey Kamyshny
The Gulf of Aqaba is an oligotrophic marine system with oxygen-rich water column and organic carbon-poor sediments (≤0.6% at sites that are not influenced by anthropogenic impact). Aeolian dust deposition from the Arabian, Sinai, and Sahara Deserts is an important source of sediment, especially at the deep-water sites of the Gulf, which are less affected by sediment transport from the Arava Desert during seasonal flash floods. Microbial sulfate reduction in sediments is inferred from the presence of pyrite (although at relatively low concentrations), the presence of sulfide oxidation intermediates, and by the sulfur isotopic composition of sulfate and solid-phase sulfides...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28618318/effect-of-differential-forest-management-on-land-use-change-luc-in-a-tropical-hill-forest-of-malaysia
#17
Kazi Mohammad Masum, Asyraf Mansor, Shahrul Anuar Mohd Sah, Hwee San Lim
Forest ownership is considered as a vital aspect for sustainable management of forest and its associated biodiversity. The Global Forest Resources Assessment 2015 reported that privately owned forest area are increasing on a global scale, but deforestation was found very active in privately owned hill forest areas of Malaysia. Penang State was purposively chosen as it has been experiencing rapid and radical changes due to urban expansion over the last three decades. In this study, analyses of land-use changes were done by PCI Geomatica using Landsat images from 1991 to 2015, future trends of land-use change were assessed using EXCEL forecast function, and its impact on the surrounding environment were conducted by reviewing already published articles on changing environment of the study area...
September 15, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28599360/lessons-learned-from-khartoum-flash-flood-impacts-an-integrated-assessment
#18
Mohamad Ibrahim Mahmood, Nadir Ahmed Elagib, Finlay Horn, Suhair A G Saad
This study aims at enabling the compilation of key lessons for decision makers and urban planners in rapidly urbanizing cities regarding the identification of representative, chief causal natural and human factors for the increased level of flash flood risk. To achieve this, the impacts of flash flood events of 2013 and 2014 in the capital of Sudan, Khartoum, were assessed using seven integrated approaches, i.e. rainfall data analysis, document analysis of affected people and houses, observational fieldwork in the worst flood affected areas, people's perception of causes and mitigation measures through household interviews, reported drinking water quality, reported water-related diseases and social risk assessment...
December 1, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28575822/a-national-scale-flood-hazard-mapping-methodology-the-case-of-greece-protection-and-adaptation-policy-approaches
#19
Nektarios N Kourgialas, George P Karatzas
The present work introduces a national scale flood hazard assessment methodology, using multi-criteria analysis and artificial neural networks (ANNs) techniques in a GIS environment. The proposed methodology was applied in Greece, where flash floods are a relatively frequent phenomenon and it has become more intense over the last decades, causing significant damages in rural and urban sectors. In order the most prone flooding areas to be identified, seven factor-maps (that are directly related to flood generation) were combined in a GIS environment...
December 1, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28404465/tool-for-decision-making-regarding-general-evacuation-during-a-rapid-river-flood
#20
V Radosavljevic, G Belojevic, N Pavlovic
OBJECTIVES: To propose a simple and effective tool for decision-making regarding general evacuation during a rapid river flood. STUDY DESIGN: Virtual testing of a tool in a real event. METHOD: A four-component tool was applied to build an alternative scenario of the catastrophic river flood in Obrenovac, Serbia, on May 2014. The components of this tool are: (1) the amount of precipitation above the 95th percentile of all previous measurements; (2) upstream river discharge above the 95th percentile of all previous measurements; (3) upstream river level above the 95th percentile of all previous measurements; and (4) worsening of the hydrometeorological situation in the following 48 h...
May 2017: Public Health
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