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https://www.readbyqxmd.com/read/28918576/effect-of-heat-stress-on-rumen-temperature-of-three-breeds-of-cattle
#1
A M Lees, J C Lees, A T Lisle, M L Sullivan, J B Gaughan
Thirty-six steers (12 of each Angus, Charolais, and Brahman) with an initial BW of 318.5 ± 6.7 kg were used in a 130-day study. Two treatments were imposed: un-shaded and shaded (3 m(2)/animal; 90% solar block shade cloth). On day 1, steers were administered with rumen temperature boluses. Rumen temperatures (T RUM) were obtained at 10 min intervals over the duration of the study to determine differences in T RUM between Bos indicus and Bos taurus cattle. Six feedlot pens (162 m(2)) were used with six steers (2/breed) per pen with three pens/treatment...
September 16, 2017: International Journal of Biometeorology
https://www.readbyqxmd.com/read/28916760/responses-of-lai-to-rainfall-explain-contrasting-sensitivities-to-carbon-uptake-between-forest-and-non-forest-ecosystems-in-australia
#2
Longhui Li, Ying-Ping Wang, Jason Beringer, Hao Shi, James Cleverly, Lei Cheng, Derek Eamus, Alfredo Huete, Lindsay Hutley, Xingjie Lu, Shilong Piao, Lu Zhang, Yongqiang Zhang, Qiang Yu
Non-forest ecosystems (predominant in semi-arid and arid regions) contribute significantly to the increasing trend and interannual variation of land carbon uptake over the last three decades, yet the mechanisms are poorly understood. By analysing the flux measurements from 23 ecosystems in Australia, we found the the correlation between gross primary production (GPP) and ecosystem respiration (Re) was significant for non-forest ecosystems, but was not for forests. In non-forest ecosystems, both GPP and Re increased with rainfall, and, consequently net ecosystem production (NEP) increased with rainfall...
September 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28915461/forecasting-wheat-and-barley-crop-production-in-arid-and-semi-arid-regions-using-remotely-sensed-primary-productivity-and-crop-phenology-a-case-study-in-iraq
#3
Sarchil Hama Qader, Jadunandan Dash, Peter M Atkinson
Crop production and yield estimation using remotely sensed data have been studied widely, but such information is generally scarce in arid and semi-arid regions. In these regions, inter-annual variation in climatic factors (such as rainfall) combined with anthropogenic factors (such as civil war) pose major risks to food security. Thus, an operational crop production estimation and forecasting system is required to help decision-makers to make early estimates of potential food availability. Data from NASA's MODIS with official crop statistics were combined to develop an empirical regression-based model to forecast winter wheat and barley production in Iraq...
September 12, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28914975/seroepidemiology-of-hepatitis-e-virus-infection-in-pigs-in-durango-state-mexico
#4
Cosme Alvarado-Esquivel, Luis Francisco Sánchez-Anguiano, Jesús Hernández-Tinoco, Ángel Osvaldo Alvarado-Félix
No information about hepatitis E virus (HEV) infection in pigs in the northern Mexican state of Durango exists. We determined the seroprevalence and correlates of anti-HEV IgG antibodies in pigs in Durango, Mexico. Through a cross-sectional study, we studied 427 pigs raised in backyards (n = 328), or slaughtered (n = 99) in Durango. Sera of pigs were analyzed for anti-HEV IgG antibodies using a commercially available enzyme-linked immunoassay. Antibodies to HEV were found in 193 (45.2%) of the 427 pigs studied...
September 15, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28913681/calculation-of-intercepted-runoff-depth-based-on-stormwater-quality-and-environmental-capacity-of-receiving-waters-for-initial-stormwater-pollution-management
#5
Hai-Qin Peng, Yan Liu, Xue-Long Gao, Hong-Wu Wang, Yi Chen, Hui-Yi Cai
While point source pollutions have gradually been controlled in recent years, the non-point source pollution problem has become increasingly prominent. The receiving waters are frequently polluted by the initial stormwater from the separate stormwater system and the wastewater from sewage pipes through stormwater pipes. Consequently, calculating the intercepted runoff depth has become a problem that must be resolved immediately for initial stormwater pollution management. The accurate calculation of intercepted runoff depth provides a solid foundation for selecting the appropriate size of intercepting facilities in drainage and interception projects...
September 14, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28912589/microbial-diversity-in-the-hypersaline-lake-meyghan-iran
#6
Ali Naghoni, Giti Emtiazi, Mohammad Ali Amoozegar, Mariana Silvia Cretoiu, Lucas J Stal, Zahra Etemadifar, Seyed Abolhassan Shahzadeh Fazeli, Henk Bolhuis
Lake Meyghan is one of the largest and commercially most important salt lakes in Iran. Despite its inland location and high altitude, Lake Meyghan has a thalassohaline salt composition suggesting a marine origin. Inputs of fresh water by rivers and rainfall formed various basins characterized by different salinities. We analyzed the microbial community composition of three basins by isolation and culturing of microorganisms and by analysis of the metagenome. The basins that were investigated comprised a green ~50 g kg(-1) salinity brine, a red ~180 g kg(-1) salinity brine and a white ~300 g kg(-1) salinity brine...
September 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28910719/latitudinal-variation-in-summer-monsoon-rainfall-over-western-ghat-of-india-and-its-association-with-global-sea-surface-temperatures
#7
J V Revadekar, Hamza Varikoden, P K Murumkar, S A Ahmed
The Western Ghats (WG) of India are basically north-south oriented mountains having narrow zonal width with a steep rising western face. The summer monsoon winds during June to September passing over the Arabian Sea are obstructed by the WG and thus orographically uplift to produce moderate-to-heavy precipitation over the region. However, it is seen that characteristic features of rainfall distribution during the season vary from north to south. Also its correlation with all-India summer monsoon rainfall increases from south to north...
September 11, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28906052/forest-biomass-productivity-and-carbon-cycling-along-a-rainfall-gradient-in-west-africa
#8
Sam Moore, Stephen Adu-Bredu, Akwasi Duah-Gyamfi, Shalom D Addo-Danso, Forzia Ibrahim, Armel T Mbou, Agnès de Grandcourt, Riccardo Valentini, Giacomo Nicolini, Gloria Djagbletey, Kennedy Owusu-Afriyie, Agne Gvozdevaite, Imma Oliveras, Maria C Ruiz-Jaen, Yadvinder Malhi
Net primary productivity (NPP) is one of the most important parameters in describing the functioning of any ecosystem and yet it arguably remains a poorly quantified and understood component of carbon cycling in tropical forests, especially outside of the Americas. We provide the first comprehensive analysis of NPP and its carbon allocation to woody, canopy and root growth components at contrasting lowland West African forests spanning a rainfall gradient. Using a standardised methodology to study evergreen (EF), semi-deciduous (SDF), dry forests (DF) and woody savanna (WS), we find that (i) climate is more closely related with above and belowground C stocks than with NPP (ii) total NPP is highest in the SDF site, then the EF followed by the DF and WS and that (iii) different forest types have distinct carbon allocation patterns whereby SDF allocate in excess of 50% to canopy production and the DF and WS sites allocate 40-50% to woody production...
September 14, 2017: Global Change Biology
https://www.readbyqxmd.com/read/28904779/discriminating-patterns-and-drivers-of-multiscale-movement-in-herpetofauna-the-dynamic-and-changing-environment-of-the-mojave-desert-tortoise
#9
Giancarlo Sadoti, Miranda E Gray, Matthew L Farnsworth, Brett G Dickson
Changes to animal movement in response to human-induced changes to the environment are of growing concern in conservation. Most research on this problem has focused on terrestrial endotherms, but changes to herpetofaunal movement are also of concern given their limited dispersal abilities and specialized thermophysiological requirements. Animals in the desert region of the southwestern United States are faced with environmental alterations driven by development (e.g., solar energy facilities) and climate change...
September 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28902904/assessing-coastal-wetland-vulnerability-to-sea-level-rise-along-the-northern-gulf-of-mexico-coast-gaps-and-opportunities-for-developing-a-coordinated-regional-sampling-network
#10
Michael J Osland, Kereen T Griffith, Jack C Larriviere, Laura C Feher, Donald R Cahoon, Nicholas M Enwright, David A Oster, John M Tirpak, Mark S Woodrey, Renee C Collini, Joseph J Baustian, Joshua L Breithaupt, Julia A Cherry, Jeremy R Conrad, Nicole Cormier, Carlos A Coronado-Molina, Joseph F Donoghue, Sean A Graham, Jennifer W Harper, Mark W Hester, Rebecca J Howard, Ken W Krauss, Daniel E Kroes, Robert R Lane, Karen L McKee, Irving A Mendelssohn, Beth A Middleton, Jena A Moon, Sarai C Piazza, Nicole M Rankin, Fred H Sklar, Greg D Steyer, Kathleen M Swanson, Christopher M Swarzenski, William C Vervaeke, Jonathan M Willis, K Van Wilson
Coastal wetland responses to sea-level rise are greatly influenced by biogeomorphic processes that affect wetland surface elevation. Small changes in elevation relative to sea level can lead to comparatively large changes in ecosystem structure, function, and stability. The surface elevation table-marker horizon (SET-MH) approach is being used globally to quantify the relative contributions of processes affecting wetland elevation change. Historically, SET-MH measurements have been obtained at local scales to address site-specific research questions...
2017: PloS One
https://www.readbyqxmd.com/read/28901334/rainfall-shocks-are-not-necessarily-a-sensitive-early-indicator-of-changes-in-wasting-prevalence
#11
N A Ledlie, H Alderman, J L Leroy, L You
Evidence on the impact of weather shocks on child nutrition focuses on linear growth retardation (stunting) and thus, associates the effect of a short-term measure (weather events) on a cumulative measure (attained height). Relatively little is known on how weather shocks predict increases in wasting in a population. This study explores whether deviation in rainfall in Ethiopia, a drought prone country, is a sensitive indicator of future increases in wasting. Around 12% of children 0-23 months were wasted, but we found no consistent association between the rainfall shock variables and child weight-for-height Z-scores...
September 13, 2017: European Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28899373/maximizing-the-impact-of-malaria-funding-through-allocative-efficiency-using-the-right-interventions-in-the-right-locations
#12
Nick Scott, S Azfar Hussain, Rowan Martin-Hughes, Freya J I Fowkes, Cliff C Kerr, Ruth Pearson, David J Kedziora, Madhura Killedar, Robyn M Stuart, David P Wilson
BACKGROUND: The high burden of malaria and limited funding means there is a necessity to maximize the allocative efficiency of malaria control programmes. Quantitative tools are urgently needed to guide budget allocation decisions. METHODS: A geospatial epidemic model was coupled with costing data and an optimization algorithm to estimate the optimal allocation of budgeted and projected funds across all malaria intervention approaches. Interventions included long-lasting insecticide-treated nets (LLINs), indoor residual spraying (IRS), intermittent presumptive treatment during pregnancy (IPTp), seasonal mass chemoprevention in children (SMC), larval source management (LSM), mass drug administration (MDA), and behavioural change communication (BCC)...
September 12, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28898938/characterization-of-wash-off-from-urban-impervious-surfaces-and-suds-design-criteria-for-source-control-under-semi-arid-conditions
#13
Ignacio Andrés-Doménech, Carmen Hernández-Crespo, Miguel Martín, Valerio C Andrés-Valeri
Knowledge about pollutant wash-off from urban impervious surfaces is a key feature for developing effective management strategies. Accordingly, further information is required about urban areas under semi-arid climate conditions at the sub-catchment scale. This is important for designing source control systems for pollution. In this study, a characterization of pollutant wash-off has been performed over sixteen months, at the sub-catchment scale for urban roads as impervious surfaces. The study was conducted in Valencia, Spain, a city with a Mediterranean climate...
September 8, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28895927/association-between-childhood-diarrhoeal-incidence-and-climatic-factors-in-urban-and-rural-settings-in-the-health-district-of-mbour-senegal
#14
Sokhna Thiam, Aminata N Diène, Ibrahima Sy, Mirko S Winkler, Christian Schindler, Jacques A Ndione, Ousmane Faye, Penelope Vounatsou, Jürg Utzinger, Guéladio Cissé
We assessed the association between childhood diarrhoeal incidence and climatic factors in rural and urban settings in the health district of Mbour in western Senegal. We used monthly diarrhoeal case records among children under five years registered in 24 health facilities over a four-year period (2011-2014). Climatic data (i.e., daily temperature, night temperature and rainfall) for the same four-year period were obtained. We performed a negative binomial regression model to establish the relationship between monthly diarrhoeal incidence and climatic factors of the same and the previous month...
September 12, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28895025/leaching-variations-of-heavy-metals-in-chelator-assisted-phytoextraction-by-zea-mays-l-exposed-to-acid-rainfall
#15
Yayin Lu, Dinggui Luo, Lirong Liu, Zicong Tan, An Lai, Guowei Liu, Junhui Li, Jianyou Long, Xuexia Huang, Yongheng Chen
Chelant-enhanced phytoextraction method has been put forward as an effective soil remediation method, whereas the heavy metal leaching could not be ignored. In this study, a cropping-leaching experiment, using soil columns, was applied to study the metal leaching variations during assisted phytoextraction of Cd- and Pb-polluted soils, using seedlings of Zea mays, applying three different chelators (EDTA, EDDS, and rhamnolipid), and artificial rainfall (acid rainfall or normal rainfall). It showed that artificial rainfall, especially artificial acid rain, after chelator application led to the increase of heavy metals in the leaching solution...
September 11, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28894294/synchronous-precipitation-reduction-in-the-american-tropics-associated-with-heinrich-2
#16
Martín Medina-Elizalde, Stephen J Burns, Josué Polanco-Martinez, Fernanda Lases-Hernández, Raymond Bradley, Hao-Cheng Wang, Chuan-Chou Shen
During the last ice age temperature in the North Atlantic oscillated in cycles known as Dansgaard-Oeschger (D-O) events. The magnitude of Caribbean hydroclimate change associated with D-O variability and particularly with stadial intervals, remains poorly constrained by paleoclimate records. We present a 3.3 thousand-year long stalagmite δ(18)O record from the Yucatan Peninsula (YP) that spans the interval between 26.5 and 23.2 thousand years before present. We estimate quantitative precipitation variability and the high resolution and dating accuracy of this record allow us to investigate how rainfall in the region responds to D-O events...
September 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28894211/emerging-negative-atlantic-multidecadal-oscillation-index-in-spite-of-warm-subtropics
#17
Eleanor Frajka-Williams, Claudie Beaulieu, Aurelie Duchez
Sea surface temperatures in the northern North Atlantic have shown a marked decrease over the past several years. The sea surface in the subpolar gyre is now as cold as it was during the last cold phase of the Atlantic Multidecadal Oscillation index in the 1990s. This climate index is associated with shifts in hurricane activity, rainfall patterns and intensity, and changes in fish populations. However, unlike the last cold period in the Atlantic, the spatial pattern of sea surface temperature anomalies in the Atlantic is not uniformly cool, but instead has anomalously cold temperatures in the subpolar gyre, warm temperatures in the subtropics and cool anomalies over the tropics...
September 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28894162/a-regime-shift-in-the-sun-climate-connection-with-the-end-of-the-medieval-climate-anomaly
#18
D A Smirnov, S F M Breitenbach, G Feulner, F A Lechleitner, K M Prufer, J U L Baldini, N Marwan, J Kurths
Understanding the influence of changes in solar activity on Earth's climate and distinguishing it from other forcings, such as volcanic activity, remains a major challenge for palaeoclimatology. This problem is best approached by investigating how these variables influenced past climate conditions as recorded in high precision paleoclimate archives. In particular, determining if the climate system response to these forcings changes through time is critical. Here we use the Wiener-Granger causality approach along with well-established cross-correlation analysis to investigate the causal relationship between solar activity, volcanic forcing, and climate as reflected in well-established Intertropical Convergence Zone (ITCZ) rainfall proxy records from Yok Balum Cave, southern Belize...
September 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28888239/urban-climate-in-the-tokyo-metropolitan-area-in-japan
#19
REVIEW
Jun Matsumoto, Fumiaki Fujibe, Hideo Takahashi
Long-term climate changes related with urbanization in Tokyo, Japan, and recent temperature and heavy rainfall distribution in the Tokyo metropolitan area are reviewed. A relatively high temperature increase in annual mean temperature at the rate of 3.0°C/century was detected in Tokyo for the period 1901-2015. Some observational evidence showed the existence of both thermal and mechanical effects of urbanization on recent heavy rainfall occurrences, and modeling studies also support precipitation enhancement...
September 2017: Journal of Environmental Sciences (China)
https://www.readbyqxmd.com/read/28888158/predicting-motorcycle-crash-injury-severity-using-weather-data-and-alternative-bayesian-multivariate-crash-frequency-models
#20
Wen Cheng, Gurdiljot Singh Gill, Taha Sakrani, Mohan Dasu, Jiao Zhou
Motorcycle crashes constitute a very high proportion of the overall motor vehicle fatalities in the United States, and many studies have examined the influential factors under various conditions. However, research on the impact of weather conditions on the motorcycle crash severity is not well documented. In this study, we examined the impact of weather conditions on motorcycle crash injuries at four different severity levels using San Francisco motorcycle crash injury data. Five models were developed using Full Bayesian formulation accounting for different correlations commonly seen in crash data and then compared for fitness and performance...
September 6, 2017: Accident; Analysis and Prevention
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