keyword
MENU ▼
Read by QxMD icon Read
search

Rainfall

keyword
https://www.readbyqxmd.com/read/28428853/coral-reef-mesopredators-switch-prey-shortening-food-chains-in-response-to-habitat-degradation
#1
Tessa N Hempson, Nicholas A J Graham, M Aaron MacNeil, David H Williamson, Geoffrey P Jones, Glenn R Almany
Diet specificity is likely to be the key predictor of a predator's vulnerability to changing habitat and prey conditions. Understanding the degree to which predatory coral reef fishes adjust or maintain prey choice, in response to declines in coral cover and changes in prey availability, is critical for predicting how they may respond to reef habitat degradation. Here, we use stable isotope analyses to characterize the trophic structure of predator-prey interactions on coral reefs of the Keppel Island Group on the southern Great Barrier Reef, Australia...
April 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28428791/genome-wide-association-study-for-pre-harvest-sprouting-resistance-in-a-large-germplasm-collection-of-chinese-wheat-landraces
#2
Yong Zhou, Hao Tang, Meng-Ping Cheng, Kwame O Dankwa, Zhong-Xu Chen, Zhan-Yi Li, Shang Gao, Ya-Xi Liu, Qian-Tao Jiang, Xiu-Jin Lan, Zhi-En Pu, Yu-Ming Wei, You-Liang Zheng, Lee T Hickey, Ji-Rui Wang
Pre-harvest sprouting (PHS) is mainly caused by the breaking of seed dormancy in high rainfall regions, which leads to huge economic losses in wheat. In this study, we evaluated 717 Chinese wheat landraces for PHS resistance and carried out genome-wide association studies (GWAS) using to 9,740 DArT-seq and 178,803 SNP markers. Landraces were grown across six environments in China and germination testing of harvest-ripe grain was used to calculate the germination rate (GR) for each accession at each site. GR was highly correlated across all environments...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28427415/insecticide-resistance-patterns-in-uganda-and-the-effect-of-indoor-residual-spraying-with-bendiocarb-on-kdr-l1014s-frequencies-in-anopheles-gambiae-s-s
#3
Tarekegn A Abeku, Michelle E H Helinski, Matthew J Kirby, James Ssekitooleko, Chris Bass, Irene Kyomuhangi, Michael Okia, Godfrey Magumba, Sylvia R Meek
BACKGROUND: Resistance of malaria vectors to pyrethroid insecticides has been attributed to selection pressure from long-lasting insecticidal nets (LLINs), indoor residual spraying (IRS), and the use of chemicals in agriculture. The use of different classes of insecticides in combination or by rotation has been recommended for resistance management. The aim of this study was to understand the role of IRS with a carbamate insecticide in management of pyrethroid resistance. METHODS: Anopheles mosquitoes were collected from multiple sites in nine districts of Uganda (up to five sites per district)...
April 20, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28426983/constraining-the-temporal-variations-of-ra-isotopes-and-rn-in-the-groundwater-end-member-implications-for-derived-sgd-estimates
#4
Marc Cerdà-Domènech, Valentí Rodellas, Albert Folch, Jordi Garcia-Orellana
Submarine groundwater discharge (SGD) has been recognized as an important supplier of chemical compounds to the ocean that may influence coastal geochemical cycles. Radium isotopes ((223)Ra, (224)Ra, (226)Ra,(228)Ra) and radon ((222)Rn) have been widely applied as tracers of SGD. Their application requires the appropriate characterization of both the concentrations of tracers in the discharging groundwater and their distribution in the coastal water column. This study evaluates the temporal evolution of Ra isotopes and (222)Rn concentrations in a dynamic subterranean estuary of a microtidal Mediterranean coastal aquifer that experiences large displacements of the fresh-saltwater interface as a necessary initial step in evaluating the influence of SGD in coastal waters...
April 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28423459/breaks-in-modis-time-series-portend-vegetation-change-verification-using-long-term-data-in-an-arid-grassland-ecosystem
#5
Dawn M Browning, Jonathan J Maynard, Jason W Karl, Debra C Peters
Frequency and severity of extreme climatic events are forecast to increase in the 21st century. Predicting how managed ecosystems may respond to climatic extremes is intensified by uncertainty associated with knowing when, where, and how long effects of extreme events will be manifest in an ecosystem. In water-limited ecosystems with high inter-annual variability in rainfall, it is important to be able to distinguish responses that result from seasonal fluctuations in rainfall from long-term directional increases or decreases in precipitation...
April 19, 2017: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/28423068/suicide-and-meteorological-factors-in-s%C3%A3-o-paulo-brazil-1996-2011-a-time-series-analysis
#6
Daniel H Bando, Chei T Teng, Fernando M Volpe, Eduardo de Masi, Luiz A Pereira, Alfésio L Braga
Objective: Considering the scarcity of reports from intertropical latitudes and the Southern Hemisphere, we aimed to examine the association between meteorological factors and suicide in São Paulo. Method: Weekly suicide records stratified by sex were gathered. Weekly averages for minimum, mean, and maximum temperature (°C), insolation (hours), irradiation (MJ/m2), relative humidity (%), atmospheric pressure (mmHg), and rainfall (mm) were computed. The time structures of explanatory variables were modeled by polynomial distributed lag applied to the generalized additive model...
April 13, 2017: Revista Brasileira de Psiquiatria
https://www.readbyqxmd.com/read/28422988/rainfall-changes-affect-the-algae-dominance-in-tank-bromeliad-ecosystems
#7
Aliny Patricia Flauzino Pires, Juliana da Silva Leal, Edwin T H M Peeters
Climate change and biodiversity loss have been reported as major disturbances in the biosphere which can trigger changes in the structure and functioning of natural ecosystems. Nonetheless, empirical studies demonstrating how both factors interact to affect shifts in aquatic ecosystems are still unexplored. Here, we experimentally test how changes in rainfall distribution and litter diversity affect the occurrence of the algae-dominated condition in tank bromeliad ecosystems. Tank bromeliads are miniature aquatic ecosystems shaped by the rainwater and allochthonous detritus accumulated in the bases of their leaves...
2017: PloS One
https://www.readbyqxmd.com/read/28421270/climate-variability-impacts-on-rainfed-cereal-yields-in-west-and-northwest-iran
#8
Milad Nouri, Mehdi Homaee, Mohammad Bannayan
In order to assess the response of wheat and barley to climate variability, the correlation between variations of yields with local and global climate variables was investigated in west and northwest Iran over 1982-2013. The global climate variables were the El Niño-Southern Oscillation (ENSO), Arctic Oscillation (AO), and North Atlantic Oscillation (NAO) signals. Further, minimum (T min), maximum (T max), and mean (T mean) temperature, diurnal temperature range (DTR), precipitation, and reference evapotranspiration (ET0) was used as local weather factors...
April 18, 2017: International Journal of Biometeorology
https://www.readbyqxmd.com/read/28421106/the-synergistic-responses-of-different-photoprotective-pathways-in-dwarf-bamboo-fargesia-rufa-to-drought-and-subsequent-rewatering
#9
Chenggang Liu, Yanjie Wang, Kaiwen Pan, Qingwei Wang, Jin Liang, Yanqiang Jin, Akash Tariq
Dwarf bamboo-dominated forests are often subjected to temporary periods of drought due to rising air temperature and decreasing rainfall. Nevertheless, the relationship among CO2 assimilation, photoprotective pathways and metabolism of reactive oxygen species (ROS) remains unexplored in bamboo species. Changes in leaf gas exchange, chlorophyll fluorescence, energy partitioning, antioxidative system and compounds related to ROS metabolism in Fargesia rufa plants subjected to drought and subsequent rewatering were analyzed...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28421091/oil-palm-and-rubber-tree-water-use-patterns-effects-of-topography-and-flooding
#10
Afik Hardanto, Alexander Röll, Furong Niu, Ana Meijide, Hendrayanto, Dirk Hölscher
Oil palm and rubber plantations extend over large areas and encompass heterogeneous site conditions. In periods of high rainfall, plants in valleys and at riparian sites are more prone to flooding than plants at elevated topographic positions. We asked to what extent topographic position and flooding affect oil palm and rubber tree water use patterns and thereby influence spatial and temporal heterogeneity of transpiration. In an undulating terrain in the lowlands of Jambi, Indonesia, plantations of the two species were studied in plot pairs consisting of upland and adjacent valley plots...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28419347/evolutionary-trade-offs-between-drought-resistance-mechanisms-across-a-precipitation-gradient-in-a-seasonally-dry-tropical-oak-quercus-oleoides
#11
Jose A Ramírez-Valiente, Jeannine Cavender-Bares
In seasonally dry tropical forest regions, drought avoidance during the dry season coupled with high assimilation rates in the wet season is hypothesized to be an advantageous strategy for forest trees in regions with severe and long dry seasons. In contrast, where dry seasons are milder, drought tolerance coupled with a conservative resource-use strategy is expected to maximize carbon assimilation throughout the year. Tests of this hypothesis, particularly at the intraspecific level, have been seldom conducted...
April 13, 2017: Tree Physiology
https://www.readbyqxmd.com/read/28419174/stronger-diversity-effects-with-increased-environmental-stress-a-study-of-multitrophic-interactions-between-oak-powdery-mildew-and-ladybirds
#12
Mathias Dillen, Christian Smit, Martijn Buyse, Monica Höfte, Patrick De Clercq, Kris Verheyen
Recent research has suggested that increasing neighbourhood tree species diversity may mitigate the impact of pests or pathogens by supporting the activities of their natural enemies and/or reducing the density of available hosts. In this study, we attempted to assess these mechanisms in a multitrophic study system of young oak (Quercus), oak powdery mildew (PM, caused by Erysiphe spp.) and a mycophagous ladybird (Psyllobora vigintiduopunctata). We assessed ladybird mycophagy on oak PM in function of different neighbourhood tree species compositions...
2017: PloS One
https://www.readbyqxmd.com/read/28419105/year-round-breeding-equatorial-larks-from-three-climatically-distinct-populations-do-not-use-rainfall-temperature-or-invertebrate-biomass-to-time-reproduction
#13
Henry K Ndithia, Kevin D Matson, Maaike A Versteegh, Muchane Muchai, B Irene Tieleman
Timing of reproduction in birds is important for reproductive success and is known to depend on environmental cues such as day length and food availability. However, in equatorial regions, where day length is nearly constant, other factors such as rainfall and temperature are thought to determine timing of reproduction. Rainfall can vary at small spatial and temporal scales, providing a highly fluctuating and unpredictable environmental cue. In this study we investigated the extent to which spatio-temporal variation in environmental conditions can explain the timing of breeding of Red-capped Lark, Calandrella cinerea, a species that is capable of reproducing during every month of the year in our equatorial east African study locations...
2017: PloS One
https://www.readbyqxmd.com/read/28414883/temperature-and-rainfall-interact-to-control-carbon-cycling-in-tropical-forests
#14
REVIEW
Philip G Taylor, Cory C Cleveland, William R Wieder, Benjamin W Sullivan, Christopher E Doughty, Solomon Z Dobrowski, Alan R Townsend
Tropical forests dominate global terrestrial carbon (C) exchange, and recent droughts in the Amazon Basin have contributed to short-term declines in terrestrial carbon dioxide uptake and storage. However, the effects of longer-term climate variability on tropical forest carbon dynamics are still not well understood. We synthesised field data from more than 150 tropical forest sites to explore how climate regulates tropical forest aboveground net primary productivity (ANPP) and organic matter decomposition, and combined those data with two existing databases to explore climate - C relationships globally...
April 17, 2017: Ecology Letters
https://www.readbyqxmd.com/read/28413264/climate-variability-and-inter-provincial-migration-in-south-america-1970-2011
#15
Brian Thiede, Clark Gray, Valerie Mueller
We examine the effect of climate variability on human migration in South America. Our analyses draw on over 21 million observations of adults aged 15-40 from 25 censuses conducted in eight South American countries. Addressing limitations associated with methodological diversity among prior studies, we apply a common analytic approach and uniform definitions of migration and climate across all countries. We estimate the effects of climate variability on migration overall and also investigate heterogeneity across sex, age, and socioeconomic groups, across countries, and across historical climate conditions...
November 2016: Global Environmental Change: Human and Policy Dimensions
https://www.readbyqxmd.com/read/28413155/effects-of-natural-environment-on-reproductive-histo-morphometric-dynamics-of-female-dromedary-camel
#16
Hafiz Muhammad Ali, Anas Sarwar Qureshi, Riaz Hussain, Giorgia Urbinati, Mohammad Zahid Mustafa, Farah Ali, Abdul Manan, Liliane Massaad-Massade
Camel shows a seasonal breeding pattern with enhanced reproductive activity during the period of low climatic temperature, high rainfall and better food conditions. Therefore, the study was conducted to explore the underlying seasonal effects on histological dimensions of reproductive tract in adult female one-humped camel (Camelus dromedarius) kept in the natural environment of Pakistan. A total 25 reproductive tracts were collected during spring, summer, autumn and winter seasons and were analysed for histo-morphometric parameters during different environmental conditions...
March 29, 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/28412569/a-comparison-of-the-abilities-of-the-usle-m-rusle2-and-wepp-to-model-event-erosion-from-bare-fallow-areas
#17
P I A Kinnell
Traditionally, the Universal Soil Loss Equation (USLE) and the revised version of it (RUSLE) have been applied to predicting the long term average soil loss produced by rainfall erosion in many parts of the world. Overtime, it has been recognized that there is a need to predict soil losses over shorter time scales and this has led to the development of WEPP and RUSLE2 which can be used to predict soil losses generated by individual rainfall events. Data currently exists that enables the RUSLE2, WEPP and the USLE-M to estimate historic soil losses from bare fallow runoff and soil loss plots recorded in the USLE database...
April 13, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28410509/effects-of-atmospheric-reactive-phosphorus-deposition-on-phosphorus-transport-in-a-subtropical-watershed-a-chinese-case-study
#18
Yang Gao, Zhuo Hao, Tiantian Yang, Nianpeng He, Xuefa Wen, Guirui Yu
Atmospheric phosphorus (P) deposition is not only an important external macronutrient source for aquatic ecosystems but also a major cause of high export coefficient (EC) values. However, there are limited numbers of studies in the literature that focus on estimating the deposition flux of reactive P (Pr). The aim of this study is to estimate the Pr deposition on the Xiangxi River watershed, and therefore, provide a comprehensive understanding about the Pr deposition on subtropical watersheds in China. Results have shown that maximal Pr deposition fluxes reached 12 kg km(-2) in our selected subtropical watershed...
April 11, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28407272/the-relative-effects-of-reproductive-condition-stress-and-seasonality-on-patterns-of-parasitism-in-wild-female-black-howler-monkeys-alouatta-pigra
#19
Rodolfo Martínez-Mota, Paul A Garber, Rupert Palme, Thomas R Gillespie
Parasitic infections in wildlife are shaped by host-related traits including individual reproductive condition. It has been argued that female primates are more susceptible to infectious diseases during pregnancy due to short-term changes in immune function that result in reduced ability to combat infections. Likewise, lactation, which is the most energetically expensive state, may affect immunity and infection risk due to tradeoffs between milk production and maintenance of immune function. Here, we examine the degree to which parasite prevalence and parasite richness are affected by female reproductive condition and stress levels in wild female black howler monkeys (Alouatta pigra)...
April 13, 2017: American Journal of Primatology
https://www.readbyqxmd.com/read/28406241/fewer-rainy-days-and-more-extreme-rainfall-by-the-end-of-the-century-in-southern-africa
#20
Benjamin Pohl, Clémence Macron, Paul-Arthur Monerie
Future changes in the structure of daily rainfall, especially the number of rainy days and the intensity of extreme events, are likely to induce major impacts on rain-fed agriculture in the tropics. In Africa this issue is of primary importance, but the agreement between climate models to simulate such descriptors of rainfall is generally poor. Here, we show that the climate models used for the fifth assessment report of IPCC simulate a marked decrease in the number of rainy days, together with a strong increase in the rainfall amounts during the 1% wettest days, by the end of the 21st century over Southern Africa...
April 13, 2017: Scientific Reports
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"