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https://www.readbyqxmd.com/read/28926992/the-native-fruit-geoffroea-decorticans-from-arid-northern-chile-phenolic-composition-antioxidant-activities-and-in-vitro-inhibition-of-pro-inflammatory-and-metabolic-syndrome-associated-enzymes
#1
Felipe Jiménez-Aspee, Cristina Theoduloz, Maria Del Pilar C Soriano, Maider Ugalde-Arbizu, Maria Rosa Alberto, Iris Catiana Zampini, Maria Inés Isla, Mario J Simirigiotis, Guillermo Schmeda-Hirschmann
The native tree Geoffroea decorticans (chañar) grows in the arid lands of northern Chile. It has been used as a food plant since prehistoric times. Phenolic-enriched extracts (PEEs) of Chilean chañar fruits were assessed for their chemical composition, antioxidant properties and inhibition of pro-inflammatory and metabolic syndrome-associated enzymes. Phenolic profiles were determined by HPLC-DAD-MS/MS. The PEEs of G. decorticans showed a strong effect towards the enzymes COX-1/COX-2, with inhibition percentages ranging from inactive to 92...
September 18, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28926750/land-cover-and-air-pollution-are-associated-with-asthma-hospitalisations-a-cross-sectional-study
#2
Ian Alcock, Mathew White, Mark Cherrie, Benedict Wheeler, Jonathon Taylor, Rachel McInnes, Eveline Otte Im Kampe, Sotiris Vardoulakis, Christophe Sarran, Ireneous Soyiri, Lora Fleming
BACKGROUND: There is increasing policy interest in the potential for vegetation in urban areas to mitigate harmful effects of air pollution on respiratory health. We aimed to quantify relationships between tree and green space density and asthma-related hospitalisations, and explore how these varied with exposure to background air pollution concentrations. METHODS: Population standardised asthma hospitalisation rates (1997-2012) for 26,455 urban residential areas of England were merged with area-level data on vegetation and background air pollutant concentrations...
September 16, 2017: Environment International
https://www.readbyqxmd.com/read/28926642/a-late-holocene-pollen-record-from-proglacial-oblong-tarn-mount-kenya
#3
Colin J Courtney Mustaphi, Konrad Gajewski, Rob Marchant, Gunhild Rosqvist
High-elevation ecosystems, such as those on Mount Kenya are undergoing significant changes, with accelerated glacial ice losses over the twentieth century creating new space for alpine plants to establish. These ecosystems respond rapidly to climatic variability and within decades of glacial retreat, Afroalpine pioneering taxa stabilize barren land and facilitate soil development, promoting complex patches of alpine vegetation. Periglacial lake sediment records can be used to examine centennial and millennial scale variations in alpine and montane vegetation compositions...
2017: PloS One
https://www.readbyqxmd.com/read/28926374/reducing-urban-violence-a-contrast-of-public-health-and-criminal-justice-approaches
#4
Magdalena Cerdá, Melissa Tracy, Katherine M Keyes
BACKGROUND: Cities are investing millions in Cure Violence, a public health approach to reduce urban violence by targeting at-risk youth and redirecting conflict to non-violent responses. The impact of such a program compared to criminal justice responses is unknown because experiments directly comparing criminal justice and public health approaches to violence prevention are infeasible with observational data. We simulated experiments to test the influence of two interventions on violence: a) Cure Violence; and b) directed police patrol in violence hot spots...
September 18, 2017: Epidemiology
https://www.readbyqxmd.com/read/28925876/the-antitumor-potential-of-marine-natural-products-a-mechanistic-investigation
#5
Liping Hu, Jie Ying, Miaomiao Zhang, Xiaoyan Qiu, Yu Lu
Compounds obtained from natural resources have been the important candidates for the discovery and development of drugs. Over the past few decades, marine resources gradually attracted the attention of the majority of researchers, and a number of compounds with various structures or activities have been obtained from sponge, alga, fungus, mollusks and some others. Because of the living conditions in the ocean are higher pressures, more variable temperatures, lower oxygen and lower light than that in the terrestrial environment, marine resources have a lot of organisms that are not available or rare on land...
September 18, 2017: Anti-cancer Agents in Medicinal Chemistry
https://www.readbyqxmd.com/read/28925537/continental-extent-patterns-in-amphibian-malformations-linked-to-parasites-chemical-contaminants-and-their-interactions
#6
Sarah E Haas, Mari K Reeves, Alfred E Pinkney, Pieter T J Johnson
Widespread observations of malformed amphibians across North America have generated both concern and controversy. Debates over the causes of such malformations-which can affect >50% of animals in a population-have continued, likely due to involvement of multiple causal factors. Here, we used a 13-year dataset encompassing 53,880 frogs and toads from 422 wetlands and 42 states in the conterminous USA to test hypotheses relating abnormalities and four categories of potential drivers: (1) chemical contaminants, (2) land use practices, (3) parasite infection, and (4) targeted interactions between parasites and pesticides...
September 19, 2017: Global Change Biology
https://www.readbyqxmd.com/read/28924506/automated-classification-of-tropical-shrub-species-a-hybrid-of-leaf-shape-and-machine-learning-approach
#7
Miraemiliana Murat, Siow-Wee Chang, Arpah Abu, Hwa Jen Yap, Kien-Thai Yong
Plants play a crucial role in foodstuff, medicine, industry, and environmental protection. The skill of recognising plants is very important in some applications, including conservation of endangered species and rehabilitation of lands after mining activities. However, it is a difficult task to identify plant species because it requires specialized knowledge. Developing an automated classification system for plant species is necessary and valuable since it can help specialists as well as the public in identifying plant species easily...
2017: PeerJ
https://www.readbyqxmd.com/read/28923923/hydrologic-regulation-of-plant-rooting-depth
#8
Ying Fan, Gonzalo Miguez-Macho, Esteban G Jobbágy, Robert B Jackson, Carlos Otero-Casal
Plant rooting depth affects ecosystem resilience to environmental stress such as drought. Deep roots connect deep soil/groundwater to the atmosphere, thus influencing the hydrologic cycle and climate. Deep roots enhance bedrock weathering, thus regulating the long-term carbon cycle. However, we know little about how deep roots go and why. Here, we present a global synthesis of 2,200 root observations of >1,000 species along biotic (life form, genus) and abiotic (precipitation, soil, drainage) gradients. Results reveal strong sensitivities of rooting depth to local soil water profiles determined by precipitation infiltration depth from the top (reflecting climate and soil), and groundwater table depth from below (reflecting topography-driven land drainage)...
September 18, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28923661/the-influence-of-the-aquatic-environment-on-the-center-of-pressure-impulses-and-upper-and-lower-trunk-accelerations-during-gait-initiation
#9
Andresa R Marinho-Buzelli, Kei Masani, Hossein Rouhani, Ana M Barela, Gustavo T B Fernandes, Mary C Verrier, Milos R Popovic
Gait initiation is defined as the transition from stationary standing to steady-state walking. Despite the frequent use of therapy pools for training walking in early stages of rehabilitation, none have been reported on the effects of immersion on gait initiation. We aimed to analyze the center of pressure (COP) trajectories, the vertical and anteroposterior impulses and upper and lower trunk accelerations during anticipatory (APA) and execution phases of gait initiation. In the COP trajectory, the execution (EXE) phase was further subdivided in two phases: predominantly mediolateral (EXE1), and predominantly anteroposterior (EXE2)...
September 8, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28923578/coastal-dynamics-vs-beach-users-attitudes-and-perceptions-to-enhance-environmental-conservation-and-management-effectiveness
#10
Roberta Aretano, Luca Parlagreco, Teodoro Semeraro, Giovanni Zurlini, Irene Petrosillo
This work carries out a landscape analysis for the last 60years to compare the degree of preservation of two areas on the same Italian coastline characterized by different environmental protection levels: a National designated protected areas and a highly tourist coastal destination. The conversion of natural land-covers into human land uses were detected for protected and unprotected coastal stretches highlighting that the only establishment of a protected area is not enough to stem undesirable land-use outcomes...
September 15, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28923557/a-molecular-approach-towards-taxonomic-identification-of-elasmobranch-species-from-maltese-fisheries-landings
#11
Adriana Vella, Noel Vella, Sarah Schembri
The mitochondrial genome, through the application of DNA barcoding, provides a powerful tool for identifying species even when specimens are either incomplete or belong to species that exhibit cryptic diversity. In fisheries management accurate identification of whole or part of the specimens landed is a fundamental requirement for the conservation of species affected directly or indirectly by the fisheries activities. In this study cytochrome c oxidase subunit I (COI) and NADH dehydrogenase subunit 2 (ND2) sequences were used to genetically distinguish 36 elasmobranch species collected from Maltese (Central Mediterranean) commercial fisheries landings...
September 8, 2017: Marine Genomics
https://www.readbyqxmd.com/read/28922802/succession-of-arbuscular-mycorrhizal-fungi-along-a-52-year-agricultural-recultivation-chronosequence
#12
Julien Roy, Rüdiger Reichel, Nicolas Brüggemann, Stefan Hempel, Matthias C Rillig
Arbuscular mycorrhizal (AM) fungi provide a range of functions in natural and managed ecosystems. However, the trajectory of AM fungal diversity after land degradation is poorly known. We studied the succession of AM fungi along an agricultural recultivation chronosequence after open-cast mining near Cologne, Germany. We used high-throughput sequencing of the large-subunit ribosomal RNA genes to characterize the soil AM fungal communities of 10 agricultural fields spanning 52 years of recultivation. During three years, soils are recultivated with a legume, and then converted to agriculture to be later returned to local farmers implementing conventional agriculture...
September 1, 2017: FEMS Microbiology Ecology
https://www.readbyqxmd.com/read/28922307/safe-summers-adapting-evidence-based-injury-prevention-into-a-summer-curriculum
#13
Melody Schaeffer, Claire Cioni, Nicole Kozma, Catherine Rains, Greta Todd
BACKGROUND: Unintentional injury is the leading cause of death for those aged 0 to 19. St. Louis Children's Hospital created Safety Land, a comprehensive injury prevention intervention which is provided during summer months. This program uses a life-size board game to teach safety education to children in ages 5-11. The purpose of this study was to evaluate the effect of Safety Land on safety knowledge in children that participated in the intervention. METHODS: St...
September 15, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28921829/vegetation-demographics-in-earth-system-models-a-review-of-progress-and-priorities
#14
Rosie A Fisher, Charles D Koven, William R L Anderegg, Bradley O Christoffersen, Michael C Dietze, Caroline Farrior, Jennifer A Holm, George Hurtt, Ryan G Knox, Peter J Lawrence, Jeremy W Lichststein, Marcos Longo, Ashley M Matheny, David Medvigy, Helene C Muller-Landau, Thomas L Powell, Shawn P Serbin, Hisashi Sato, Jacquelyn Shuman, Benjamin Smith, Anna T Trugman, Toni Viskari, Hans Verbeeck, Ensheng Weng, Chonggang Xu, Xiangtao Xu, Tao Zhang, Paul Moorcroft
Numerous current efforts seek to improve the representation of ecosystem ecology and vegetation demographic processes within Earth System Models (ESMs). These developments are widely viewed as an important step in developing greater realism in predictions of future ecosystem states and fluxes. Increased realism, however, leads to increased model complexity, with new features raising a suite of ecological questions that require empirical constraints. Here, we review the developments that permit the representation of plant demographics in ESMs, and identify issues raised by these developments that highlight important gaps in ecological understanding...
September 18, 2017: Global Change Biology
https://www.readbyqxmd.com/read/28921806/a-large-area-spatially-continuous-assessment-of-land-cover-map-error-and-its-impact-on-downstream-analyses
#15
Lyndon Estes, Peng Chen, Stephanie Debats, Tom Evans, Stefanus Ferreira, Tobias Kuemmerle, Gabrielle Ragazzo, Justin Sheffield, Adam Wolf, Eric Wood, Kelly Caylor
Land cover maps increasingly underlie research into socioeconomic and environmental patterns and processes, including global change. It is known that map errors impact our understanding of these phenomena, but quantifying these impacts is difficult because many areas lack adequate reference data. We used a highly accurate, high-resolution map of South African cropland to assess 1) the magnitude of error in several current generation land cover maps, and 2) how these errors propagate in downstream studies. We first quantified pixel-wise errors in the cropland classes of four widely used land cover maps at resolutions ranging from 1 to 100 km, then calculated errors in several representative "downstream" (map-based) analyses, including assessments of vegetative carbon stocks, evapotranspiration, crop production, and household food security...
September 16, 2017: Global Change Biology
https://www.readbyqxmd.com/read/28921508/selection-on-skewed-characters-and-the-paradox-of-stasis
#16
Suzanne Bonamour, Céline Teplitsky, Anne Charmantier, Pierre-André Crochet, Luis-Miguel Chevin
Observed phenotypic responses to selection in the wild often differ from predictions based on measurements of selection and genetic variance. An overlooked hypothesis to explain this paradox of stasis is that a skewed phenotypic distribution affects natural selection and evolution. We show through mathematical modelling that, when a trait selected for an optimum phenotype has a skewed distribution, directional selection is detected even at evolutionary equilibrium, where it causes no change in the mean phenotype...
September 18, 2017: Evolution; International Journal of Organic Evolution
https://www.readbyqxmd.com/read/28921396/determination-of-dominant-sources-of-nitrate-contamination-in-transboundary-russian-federation-ukraine-catchment-with-heterogeneous-land-use
#17
Y Vystavna, D Diadin, V Grynenko, V Yakovlev, Y Vergeles, F Huneau, P M Rossi, J Hejzlar, K Knöller
Nitrate contamination of surface water and shallow groundwater was studied in transboundary (Russia/Ukraine) catchment with heterogeneous land use. Dominant sources of nitrate contamination were determined by applying a dual δ (15)N-NO3 and δ (18)O-NO3 isotope approach, multivariate statistics, and land use analysis. Nitrate concentration was highly variable from 0.25 to 22 mg L(-1) in surface water and from 0.5 to 100 mg L(-1) in groundwater. The applied method indicated that sewage to surface water and sewage and manure to groundwater were dominant sources of nitrate contamination...
September 18, 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28921004/using-paleoecology-to-inform-land-management-as-climates-change-an-example-from-an-oak-savanna-ecosystem
#18
Jessica D Spencer, Andrea Brunelle, Tim Hepola
Oak savanna, a transitional ecosystem between open prairie and dense oak forest, was once widespread in Minnesota. Upon European settlement much of the oak savanna was destroyed. Recently, efforts to restore this ecosystem have increased and often include the reintroduction of fire. Though fire is known to serve an important role within oak savannas, there are currently few studies which address fire regimes on timescales longer than the last century. This research presents a paleoecological history of Sherburne National Wildlife Refuge (SNWR) in MN, USA, spanning the last ~8000 years...
September 18, 2017: Environmental Management
https://www.readbyqxmd.com/read/28920634/outcomes-analysis-of-stent-graft-repair-for-thoracic-aorta-emergencies
#19
Mourad Boufi, Florent Vernet, Bianca Dona, Olivier Hartung, Anderson D Loundou, Martine Haccoun, Marc Leone, Yves S Alimi
BACKGROUND: This study aimed to identify patient, pathology and procedure-related factors affecting perioperative and mid-term mortality of thoracic aorta emergencies. METHODS: Between 2007 and 2014, patients treated emergently with thoracic stent-graft were retrospectively reviewed. Variables analyzed were: age, renal insufficiency, shock, cardiac arrest, transfer status, pathology, debranching procedures, operation duration, vascular access and European System for Cardiac Operative Risk Evaluation (EuroSCORE)...
December 2017: Journal of Cardiovascular Surgery
https://www.readbyqxmd.com/read/28920560/indirect-evidence-of-pathogen-associated-altered-oocyte-production-in-queens-of-the-invasive-yellow-crazy-ant-anoplolepis-gracilipes-in-arnhem-land-australia
#20
M D Cooling, B D Hoffmann, M A M Gruber, P J Lester
Anoplolepis gracilipes is one of the six most widespread and pestiferous invasive ant species. Populations of this invader in Arnhem Land, Australia have been observed to decline, but the reasons behind these declines are not known. We investigated if there is evidence of a pathogen that could be responsible for killing ant queens or affecting their reproductive output. We measured queen number per nest, fecundity and fat content of queens from A. gracilipes populations in various stages of decline or expansion...
September 18, 2017: Bulletin of Entomological Research
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