keyword
MENU ▼
Read by QxMD icon Read
search

Rainfall

keyword
https://www.readbyqxmd.com/read/29140577/herbivory-and-drought-generate-short-term-stochasticity-and-long-term-stability-in-a-savanna-understory-community
#1
Corinna Riginos, Lauren M Porensky, Kari E Veblen, Truman P Young
Rainfall and herbivory are fundamental drivers of grassland plant dynamics, yet few studies have examined long-term interactions between these factors in an experimental setting. Understanding such interactions is important, as rainfall is becoming increasingly erratic and native wild herbivores are being replaced by livestock. Livestock grazing and episodic low rainfall are thought to interact, leading to greater community change than either factor alone. We examined patterns of change and stability in herbaceous community composition through four dry periods, or droughts, over 15 years of the Kenya Long-term Exclosure Experiment (KLEE), which consists of six different combinations of cattle, native wild herbivores (e...
November 15, 2017: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/29139075/investigation-of-the-effects-of-slow-release-fertilizer-and-struvite-in-biodegradation-in-filter-drains-and-potential-application-of-treated-water-in-irrigation-of-road-verges
#2
Stephen C Theophilus, Fredrick U Mbanaso, Ernest O Nnadi, Kingsley T Onyedeke
Filter drains are usually laid along the margins of highways. Highway runoffs are polluted with hydrocarbons and high levels of total dissolved solids. Therefore, effective pollution removal mechanism is necessary in order to avoid contamination of surrounding soils and groundwater. Biodegradation is amongst pollution removal mechanisms in filter drains, but it is a relatively slow process which is dependent on wide range of factors including the type of pollutant and availability of nutrients. This paper reports on a study conducted to investigate the impact of slow-release fertilizer and struvite in enhancement of biodegradation of hydrocarbon in filter drains...
November 14, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29138468/increasing-frequency-and-spatial-extent-of-concurrent-meteorological-droughts-and-heatwaves-in-india
#3
Shailza Sharma, Pradeep Mujumdar
The impacts of concurrent droughts and heatwaves could be more serious compared to their individual occurrence. Meteorological drought condition is generally characterized by low rainfall, but impact of such an event is amplified with simultaneous occurrence of heatwaves. Positive feedback between these two extremes can worsen the rainfall deficit situation to serious soil moisture depletion due to enhanced evapotranspiration. In this study, the concurrence of meteorological droughts and heatwaves is investigated in India using Indian Meteorological Department (IMD) high resolution gridded data over a period of 60 years...
November 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29136641/radioactive-contamination-in-the-tokyo-metropolitan-area-in-the-early-stage-of-the-fukushima-daiichi-nuclear-power-plant-fdnpp-accident-and-its-fluctuation-over-five-years
#4
Masanobu Ishida, Hideo Yamazaki
Radioactive contamination in the Tokyo metropolitan area in the immediate aftermath of the Fukushima Daiichi Nuclear Power Plant (FDNPP) accident was analyzed via surface soil sampled during a two-month period after the accident. 131I, 134Cs, and 137Cs were detected in these soil samples. The activity and inventory of radioactive material in the eastern part of Tokyo tended to be high. The 134Cs/137Cs activity ratio in soil was 0.978 ± 0.053. The 131I/137Cs ratio fluctuated widely, and was 19.7 ± 9.0 (weighted average 18...
2017: PloS One
https://www.readbyqxmd.com/read/29136532/spatial-and-temporal-distribution-of-rainfall-and-drought-characteristics-across-the-pearl-river-basin
#5
Shulin Deng, Tan Chen, Ni Yang, Lean Qu, Manchun Li, Dong Chen
Understanding rainfall trends as well as drought characteristics plays a key role in watershed development and management. In this study, the spatial and temporal characteristics of rainfall and drought based on temperature and precipitation data observed in 48 meteorological stations from 1959 to 2012 across the Pearl River Basin in China were analyzed. The possible influence of El Nino-Southern Oscillation (ENSO) and El Nino Modoki (ENSO_M) events on seasonal drought based on the Standardized Precipitation-evapotranspiration Index (SPEI) were also investigated...
November 11, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29134327/effects-of-land-use-types-on-dissolved-trace-metal-concentrations-in-the-le-an-river-basin-china
#6
Yinghui Jiang, Zhenglei Xie, Hua Zhang, Huanqing Xie, Yun Cao
Using land use types in multiple spatial scales (entire basin, buffer zones, and slopes) as well as statistical and spatial analysis, relationships between land use types and concentrations of dissolved trace metals were determined in the Le'an River Basin, China. The result showed that farmland and urban land were determined as the source of the pollutants, while forestland and grassland were identified as the sink of the pollutants. The temporal differences of relationships between land use types and concentrations of dissolved trace metals mainly due to the discrepancy of rainfall characteristics...
November 13, 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/29134087/do-glucocorticoids-predict-fitness-linking-environmental-conditions-corticosterone-and-reproductive-success-in-the-blue-tit-cyanistes-caeruleus
#7
L J Henderson, N P Evans, B J Heidinger, K A Herborn, K E Arnold
Glucocorticoids, including corticosterone (CORT), have been suggested to provide a physiological link between ecological conditions and fitness. Specifically, CORT, which is elevated in response to harsh conditions, is predicted to be correlated with reduced fitness. Yet, empirical studies show that CORT can be non-significantly, positively and negatively linked with fitness. Divergent environmental conditions between years or study systems may influence whether CORT is linked to fitness. To test this, we monitored free-living blue tits (Cyanistes caeruleus) during breeding over 3 years...
October 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/29133932/post-earthquake-zika-virus-surge-disaster-and-public-health-threat-amid-climatic-conduciveness
#8
Miguel Reina Ortiz, Nicole K Le, Vinita Sharma, Ismael Hoare, Edy Quizhpe, Enrique Teran, Eknath Naik, Hamisu M Salihu, Ricardo Izurieta
A recent major earthquake (M7.8), coupled with appropriate climatic conditions, led to significant destruction in Ecuador. Temperature variations, which may be induced by anthropogenic climate change, are often associated with changes in rainfall, humidity and pressure. Temperature and humidity are associated with ecological modifications that may favour mosquito breeding. We hypothesized that the disruptive ecological changes triggered by the earthquake, in the context of appropriate climatic conditions, led to an upsurge in Zika virus (ZIKV) infections...
November 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29133905/deglacial-tropical-atlantic-subsurface-warming-links-ocean-circulation-variability-to-the-west-african-monsoon
#9
Matthew W Schmidt, Ping Chang, Andrew O Parker, Link Ji, Feng He
Multiple lines of evidence show that cold stadials in the North Atlantic were accompanied by both reductions in Atlantic Meridional Overturning Circulation (AMOC) and collapses of the West African Monsoon (WAM). Although records of terrestrial change identify abrupt WAM variability across the deglaciation, few studies show how ocean temperatures evolved across the deglaciation. To identify the mechanism linking AMOC to the WAM, we generated a new record of subsurface temperature variability over the last 21 kyr based on Mg/Ca ratios in a sub-thermocline dwelling planktonic foraminifera in an Eastern Equatorial Atlantic (EEA) sediment core from the Niger Delta...
November 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29133388/assessing-the-present-and-future-probability-of-hurricane-harvey-s-rainfall
#10
Kerry Emanuel
We estimate, for current and future climates, the annual probability of areally averaged hurricane rain of Hurricane Harvey's magnitude by downscaling large numbers of tropical cyclones from three climate reanalyses and six climate models. For the state of Texas, we estimate that the annual probability of 500 mm of area-integrated rainfall was about 1% in the period 1981-2000 and will increase to 18% over the period 2081-2100 under Intergovernmental Panel on Climate Change (IPCC) AR5 representative concentration pathway 8...
November 13, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29132717/effects-of-the-enso-on-rainfall-erosivity-in-the-fujian-province-of-southeast-china
#11
Shifa Chen, Xuan Zha
Rainfall erosivity is one important factor that controls soil erosion. The interannual variability of rainfall erosivity in southeast China connected to the ENSO (El Niño-Southern Oscillation). Rainfall erosivity across southeast China was assessed using daily rainfall data from 60 meteorological stations during the period from 1980 to 2013. We determined that models of erosivity based on daily rainfall can accurately predict annual rainfall erosivity. This paper presents a study of the effects of Niño3.4 SST (Sea Surface Temperatures) anomalies, the SOI (Southern Oscillation Index) and the MEI (Multivariate El Niño-Southern Oscillation Index) on rainfall erosivity in the southeast of China...
November 10, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29129524/urban-flood-mitigation-planning-for-guwahati-a-case-of-bharalu-basin
#12
Tanaya Sarmah, Sutapa Das
Guwahati, the capital city of Assam and the gateway to the seven north-eastern Indian states, is located in the Brahmaputra valley-one of the most flood prone regions of the world. The city receives an average annual rainfall of 1688 mm and is highly vulnerable towards frequent urban floods because of uncontrolled dumping of solid waste and siltation have choked the natural water channels. This coupled with the absence of an integrated drainage network and rapid urbanisation causes floods in many parts of the city, after a quick downpour...
November 10, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/29128775/lentic-small-water-bodies-variability-of-pesticide-transport-and-transformation-patterns
#13
Uta Ulrich, Georg Hörmann, Malte Unger, Matthias Pfannerstill, Frank Steinmann, Nicola Fohrer
Lentic small water bodies have a high ecological potential as they fulfill several ecosystem services such as the retention of water and pollutants. They serve as a hot spot of biodiversity. Due to their location in or adjacent to agricultural fields, they can be influenced by inputs of pesticides and their transformation products. Since small water bodies have rarely been part of monitorings/campaigns up to now, their current exposure and processes guiding the pesticide input are not understood, yet. This study presents results of a sampling campaign of 10 lentic small water bodies from 2015 to 2016...
November 9, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29128769/erosion-induced-losses-of-carbon-nitrogen-phosphorus-and-heavy-metals-from-agricultural-soils-of-contrasting-organic-matter-management
#14
Pu Shi, Rainer Schulin
Water erosion on agricultural land preferentially carries away fine particles. Due to the generally high specific density of sorption sites of these particles, their displacement can be associated with substantial particle-bound transfer also of nutrients and pollutants with low solubility. Organic matter amendments can reduce soil erosion, but to what extent they affect the erosion-induced element losses has not been studied much. Here, we carried out field rainfall experiments on three pairs of soil plots (1...
November 9, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29128202/multi-hazard-risk-assessment-of-coastal-vulnerability-from-tropical-cyclones-a-gis-based-approach-for-the-odisha-coast
#15
Bishnupriya Sahoo, Prasad K Bhaskaran
The coastal region bordering the East coast of India is a thickly populated belt exposed to high risk and vulnerability from natural hazards such as tropical cyclones. Tropical cyclone frequencies that develop over the Bay of Bengal (average of 5-6 per year) region are much higher as compared to the Arabian Sea thereby posing a high risk factor associated with storm surge, inland inundation, wind gust, intense rainfall, etc. The Odisha State in the East coast of India experiences the highest number of cyclone strikes as compared to West Bengal, Andhra Pradesh, and Tamil Nadu...
November 8, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/29127804/impact-of-rainfall-patterns-and-frequency-on-the-export-of-pesticides-and-heavy-metals-from-agricultural-soils
#16
Fatima Meite, Pablo Alvarez-Zaldívar, Alexandre Crochet, Charline Wiegert, Sylvain Payraudeau, Gwenaël Imfeld
The combined influence of soil characteristics, pollutant aging and rainfall patterns on the export of pollutants from topsoils is poorly understood. We used laboratory experiments and parsimonious modeling to evaluate the impact of rainfall characteristics on the ponding and the leaching of a pollutant mixture from topsoils. The mixture included the fungicide metalaxyl, the herbicide S-metolachlor, as well as copper (Cu) and zinc (Zn). Four rainfall patterns, which differed in their durations and intensities, were applied twice successively with a 7days interval on each soil type...
November 8, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29127795/an-investigation-of-the-leaf-retention-capacity-efficiency-and-mechanism-for-atmospheric-particulate-matter-of-five-greening-tree-species-in-beijing-china
#17
Jinqiang Liu, Zhiguo Cao, Songyan Zou, Huanhuan Liu, Xiao Hai, Shihua Wang, Jie Duan, Benye Xi, Guangxuan Yan, Shaowei Zhang, Zhongkui Jia
Urban trees have the potential to reduce air pollution, but the retention capacity and efficiency of different tree species for atmospheric particulate matter (PM) accumulation and the underlying mechanism hasn't been well understood. To select tree species with high air purification abilities, the supplementing ultrasonic cleaning (UC) procedure was first introduced into the conventional leaf cleaning methods [single water cleaning (WC) or plus brush cleaning (BC)] for eluting the leaf-retained PM. Further updates to the methodology were applied to investigate the retention capacity, efficiency, and mechanism for PM of five typical greening tree species in Beijing, China...
November 8, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29127633/natural-and-anthropogenic-particulate-bound-aliphatic-and-polycyclic-aromatic-hydrocarbons-in-surface-waters-of-the-gulf-of-gab%C3%A3-s-tunisia-southern-mediterranean-sea
#18
Rania Fourati, Marc Tedetti, Catherine Guigue, Madeleine Goutx, Hatem Zaghden, Sami Sayadi, Boubaker Elleuch
Particulate-bound aliphatic and polycyclic aromatic hydrocarbons (AHs and PAHs) were investigated in the surface waters of the Gulf of Gabès (Tunisia, southern Mediterranean Sea). Samples were collected off the Sfax and Gabès-Ghannouch coasts. Concentrations in total resolved n-alkanes ranged from 0.03 to 3.2 μg L(-1), and concentrations in total parents + alkylated PAHs ranged from bdl to 108.6 ng L(-1). The highest concentrations were recorded in the southern Sfax. AHs were mainly of biogenic origin with odd n-alkane predominance, although an anthropogenic contribution was also detected...
November 10, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29126560/assessment-of-fecal-pollution-in-lake-pontchartrain-louisiana
#19
Jia Xue, Siyu Lin, Frederica G Lamar, Jennifer G Lamori, Samendra Sherchan
Water quality in Lake Pontchartrain was deteriorating and recreational activities along the beach were restricted by the end of the 20th Century. A microbial source tracking (MST) study was conducted to determine the fecal contamination sources at public beach of the lake, so that effective pollution control strategies can be developed. Water samples were collected over an eight-month period at ten locations along the lake in 2016 and 2017. E. coli and Enterococcus were detected in 90.6% (culture) and 97.5% (qPCR), 95...
November 7, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29124873/exposure-to-predicted-precipitation-patterns-decrease-population-size-and-alter-community-structure-of-cyanobacteria-in-biological-soil-crusts-from-the-chihuahuan-desert
#20
Vanessa Moreira Câmara Fernandes, Náthali Maria Machado de Lima, Daniel Roush, Jennifer Rudgers, Scott L Collins, Ferran Garcia-Pichel
Cyanobacteria typically colonize the surface of arid soils, building biological soil crust (biocrusts) that provide a variety of ecosystem benefits, ranging from fertilization to stabilization against erosion. We investigated how future scenarios in precipitation anticipated for the Northern Chihuahuan Desert affected abundance and composition of biocrust cyanobacteria in two grassland ecosystems. Scenarios included a decrease in precipitation and a delay of monsoon rainfall. After three years, both treatments negatively affected cyanobacteria, although the effects of monsoon delay were milder than those of decreased precipitation...
November 10, 2017: Environmental Microbiology
keyword
keyword
78272
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"