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https://www.readbyqxmd.com/read/28738506/taxonomy-or-trait-based-ecological-assessment-for-tropical-rivers-case-study-on-benthic-diatoms-in-mayotte-island-france-indian-ocean
#1
Kálmán Tapolczai, Agnès Bouchez, Csilla Stenger-Kovács, Judit Padisák, Frédéric Rimet
Diatom-based ecological quality assessment methods have been implemented and used regularly in the Water Framework Directive. These indices use the species' abundance profiles along a specific environmental gradient, which they aim to assess. However, this approach has several problematic issues including the unstable and fast-changing diatom taxonomy. The use of traits can be a solution if their responses to the environmental pressure are well-defined. Here, we developed taxonomy-based and trait-based diatom assemblage indices to assess the ecological status of riverine sites on a tropical island...
July 18, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28738205/developing-and-applying-a-site-specific-multimedia-fate-model-to-address-ecological-risk-of-oxytetracycline-discharged-with-aquaculture-effluent-in-coastal-waters-off-jangheung-korea
#2
Woojung Kim, Yunho Lee, Sang Don Kim
The overuse of oxytetracycline (OTC) in aquaculture has become a problem because of its chronic toxic effects on marine ecosystems. The present study assessed the ecological risk of OTC in the coastal waters near the Jangheung Flatfish Farm using a site-specific multimedia fate model to analyze exposure. Before the model was applied, its performance was validated by comparing it with field data. The coastal waters in the testbed were sampled and analyzed using liquid chromatography-tandem mass spectrometry (LC-MS/MS) followed by solid-phase extraction (SPE)...
July 21, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28738203/early-detection-monitoring-for-aquatic-non-indigenous-species-optimizing-surveillance-incorporating-advanced-technologies-and%C3%A2-identifying-research-needs
#3
REVIEW
Anett S Trebitz, Joel C Hoffman, John A Darling, Erik M Pilgrim, John R Kelly, Emily A Brown, W Lindsay Chadderton, Scott P Egan, Erin K Grey, Syed A Hashsham, Katy E Klymus, Andrew R Mahon, Jeffrey L Ram, Martin T Schultz, Carol A Stepien, James C Schardt
Following decades of ecologic and economic impacts from a growing list of nonindigenous and invasive species, government and management entities are committing to systematic early- detection monitoring (EDM). This has reinvigorated investment in the science underpinning such monitoring, as well as the need to convey that science in practical terms to those tasked with EDM implementation. Using the context of nonindigenous species in the North American Great Lakes, this article summarizes the current scientific tools and knowledge - including limitations, research needs, and likely future developments - relevant to various aspects of planning and conducting comprehensive EDM...
July 21, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28738143/sustained-high-nutrient-supply-as-an-allelopathic-trigger-between-periphytic-biofilm-and-microcystis-aeruginosa
#4
Yonghong Wu, Jun Tang, Junzhuo Liu, Bruce Graham, Philip G Kerr, Hong Chen
Allelopathy among aquatic organisms, especially microorganisms, has received growing attention in recent years for its role in shaping interactions with bloom-forming algae. Many studies have shown that allelopathy occurs and increases under nutrient limiting conditons. However, to date there is no reported direct evidence to indicate allelopathy occurs under the condition of constant high nutrient supply. Here we report the allelopathic action of periphytic biofilm on bloom-forming cyanobacteria (Microcystis aeruginosa), which was triggered by the stress of high nutrient conditions, and continues while nutrients are sustained at high levels (trophic state index at 159 and 171)...
July 24, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28738071/the-pit-trap-a-model-free-bootstrap-procedure-for-inference-about-regression-models-with-discrete-multivariate-responses
#5
David I Warton, Loïc Thibaut, Yi Alice Wang
Bootstrap methods are widely used in statistics, and bootstrapping of residuals can be especially useful in the regression context. However, difficulties are encountered extending residual resampling to regression settings where residuals are not identically distributed (thus not amenable to bootstrapping)-common examples including logistic or Poisson regression and generalizations to handle clustered or multivariate data, such as generalised estimating equations. We propose a bootstrap method based on probability integral transform (PIT-) residuals, which we call the PIT-trap, which assumes data come from some marginal distribution F of known parametric form...
2017: PloS One
https://www.readbyqxmd.com/read/28737934/the-combined-qsar-ice-models-practical-application-in-ecological-risk-assessment-and-water-quality-criteria
#6
Jia He, Zhi Tang, Yuanhui Zhao, Ming Fan, Scott D Dyer, Scott E Belanger, Fengchang Wu
No abstract text is available yet for this article.
July 24, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28737863/tendencia-de-los-egresos-hospitalarios-por-enfermedades-infecciosas-intestinales-en-ni%C3%A3-os-en-argentina-2005-2013
#7
Juan I Degiuseppe
INTRODUCTION: Acute diarrhea is one of the most serious public health problems in developing countries because it is generally associated with unfavorable living conditions. The objective of this study was to analyze trends in hospital discharges for intestinal infectious disease in children under age 5 recorded in official public hospitals from Argentina in the 2005-2013 period. POPULATION AND METHODS: This was an ecological, time-series study based on data provided by the Health Statistics and Information Department, at a national and regional level...
August 1, 2017: Archivos Argentinos de Pediatría
https://www.readbyqxmd.com/read/28737862/neonatal-mortality-in-argentina-situation-analysis-from-2005-to-2014
#8
Juliana Z Finkelstein, Mariana Duhau, María L Fasola, Paola Escobar
INTRODUCTION: Neonatal mortality (NM) refers to deaths occurring between birth and 27 days of life. This component of infant mortality has shown the least reduction over the past 50 years. The objective of this study was to analyze the course and characteristics of NM in Argentina. POPULATION AND METHODS: This was a descriptive, ecological study of NM in Argentina conducted between 2005 and 2014 to analyze its course, causes, and the relevance of prematurity and a low birth weight...
August 1, 2017: Archivos Argentinos de Pediatría
https://www.readbyqxmd.com/read/28737704/toxicity-at-the-edge-of-life-a-review-on-cyanobacterial-toxins-from-extreme-environments
#9
REVIEW
Samuel Cirés, María Cristina Casero, Antonio Quesada
Cyanotoxins are secondary metabolites produced by cyanobacteria, of varied chemical nature and toxic effects. Although cyanobacteria thrive in all kinds of ecosystems on Earth even under very harsh conditions, current knowledge on cyanotoxin distribution is almost restricted to freshwaters from temperate latitudes. In this review, we bring to the forefront the presence of cyanotoxins in extreme environments. Cyanotoxins have been reported especially in polar deserts (both from the Arctic and Antarctica) and alkaline lakes, but also in hot deserts, hypersaline environments, and hot springs...
July 24, 2017: Marine Drugs
https://www.readbyqxmd.com/read/28737296/neurodevelopmental-maturation-as-a-function-of-irritable-temperament-insights-from-a-naturalistic-emotional-video-viewing-paradigm
#10
Helmet T Karim, Susan B Perlman
Few studies have investigated the neural systems involved in decreasing behavioral reactivity to emotional stimuli as children age. It has been suggested that this process may interact with temperament-linked variations in neurodevelopment to better explain individual differences in the maturation of emotion regulation. In this investigation, children ages 4 to 12 (n = 30, mean age = 7.62 years, SD = 1.71 years) and adults (n = 21, mean age = 26.67 years) watched clips from popular children's films containing positive, negative, or neutral emotional content during functional magnetic resonance imaging...
July 24, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/28737000/chemoprofile-and-functional-diversity-of-fungal-and-bacterial-endophytes-and-role-of-ecofactors-a-review
#11
REVIEW
Aiyatullah Shah, Qazi Parvaiz Hassan, Saleem Mushtaq, Aabid Manzoor Shah, Aehtesham Hussain
Endophytes represent a hidden world within plants. Almost all plants that are studied harbor one or more endophytes, which help their host to survive against pathogens and changing adverse environmental conditions. Fungal and bacterial endophytes with distinct ecological niches show important biological activities and ecological functions. Their unique physiological and biochemical characteristics lead to the production of niche specific secondary metabolites that may have pharmacological potential. Identification of specific secondary metabolites in adverse environment can also help us in understanding mechanisms of host tolerance against stress condition such as biological invasions, salt, drought, temperature...
July 24, 2017: Journal of Basic Microbiology
https://www.readbyqxmd.com/read/28736847/reproductive-plasticity-and-landscape-heterogeneity-benefit-a-ground-nesting-bird-in-a-fire-prone-ecosystem
#12
J Matthew Carroll, Torre J Hovick, Craig A Davis, R Dwayne Elmore, Samuel D Fuhlendorf
Disturbance is critical for the conservation of rangeland ecosystems worldwide and many of these systems are fire dependent. Although it is well established that restoring fire as an ecological process can lead to increased biodiversity in grasslands and shrublands, the underlying mechanisms driving community patterns are poorly understood for fauna in fire-prone landscapes. Much of this uncertainty stems from the paucity of studies that examine the effects of fire at scales relevant to organism life histories...
July 24, 2017: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/28736815/a-widespread-cyanobacterium-supported-by-polyphasic-approach-proposition-of-koinonema-pervagatum-gen-sp-nov-oscillatoriales
#13
Bruna Buch, Mariéllen Dornelles Martins, Luis Henrique Z Branco
Several new genera originally classified as the genus Phormidium, a polyphyletic and taxonomically complex genus within the Oscillatoriales, were recently described. The simple morphology of Phormidium does not reflect its genetic diversity and the delimitation of a natural group is not possible with traditional classification systems based on morphology alone. Therefore, this study used morphological, ecological and molecular approaches to evaluate four populations morphologically similar to Ammassolinea, Kamptonema and Ancylothrix (simple, curved and gradually attenuated at the ends trichome), found in subtropical and tropical Brazilian regions...
July 24, 2017: Journal of Phycology
https://www.readbyqxmd.com/read/28736768/community-engagement-to-address-socio-ecological-barriers-to-physical-activity-among-african-american-breast-cancer-survivors
#14
Selina A Smith, Mary S Whitehead, Joyce Q Sheats, Brittney Chubb, Ernest Alema-Mensah, Benjamin E Ansa
BACKGROUND: With high rates of obesity, low levels of physical activity (PA), and lack of adherence to physical activity guidelines (PAGs) among African American (AA) breast cancer survivors (BCSs), culturally appropriate interventions that address barriers to participation in PA are needed. METHODS: To develop intervention content, members of an AA breast cancer support group participated in four 1-hour focus group discussions (related to the barriers to PA, strategies for overcoming them, and intervention content), which were audiotaped, transcribed, and analyzed...
2017: Journal of the Georgia Public Health Association
https://www.readbyqxmd.com/read/28736699/from-galapagos-doves-to-passerines-spillover-of-haemoproteus-multipigmentatus
#15
Maricruz Jaramillo, Sage Rohrer, Patricia G Parker
Haemoproteus (Haemoproteus) multipigmentatus, a haemosporidian parasite thought to be specific to columbiform birds, was detected in passeriform birds on Santiago Island in the Galapagos archipelago. We surveyed birds along an altitudinal gradient on the islands of Santa Cruz, Isabela and Santiago between June 2013 and July 2015. Molecular screening of 2254 individuals from 25 species of endemic and introduced birds revealed clusters of passerine birds positive for H. multipigmentatus on Santiago Island that coincide with captures of Galapagos doves at sampled sites...
December 2017: International Journal for Parasitology. Parasites and Wildlife
https://www.readbyqxmd.com/read/28736465/network-indicators-of-the-social-ecology-of-adolescents-in-relative-and-non-relative-foster-households
#16
Jennifer Blakeslee, Brianne H Kothari, Bowen McBeath, Paul Sorenson, Lew Bank
Though the presence, composition, and quality of social relationships-particularly as found in family networks-has an important influence on adolescent well-being, little is known about the social ecology of youth in foster care. This study examined the social networks of foster youth participating in a large RCT of an intervention for siblings in foster care. Youth reported on the people they lived with and the relatives they were in contact with, which provided indicators of network size, composition, and relationship quality...
February 2017: Children and Youth Services Review
https://www.readbyqxmd.com/read/28736404/factors-that-facilitate-addressing-social-determinants-of-health-throughout-community-based-participatory-research-processes
#17
Rebecca Paradiso de Sayu, Shannon M Sparks
BACKGROUND: Community-based participatory research (CBPR) is one approach to addressing health disparities. Considering social conditions that foster disparate health outcomes is a strength of CBPR studies that move beyond a more narrow focus on modifying individual health behaviors. OBJECTIVE: This article examines factors that facilitate addressing the social determinants of health (SDH) throughout a CBPR process. METHODS: Conducting an extensive literature review of relevant key terms and, subsequently, using purposeful snowball sampling, we identified ten CBPR partnerships that addressed SDH and conducted semistructured interviews followed by qualitative content analysis...
2017: Progress in Community Health Partnerships: Research, Education, and Action
https://www.readbyqxmd.com/read/28735593/virtual-reality-in-the-assessment-and-treatment-of-psychosis-a-systematic-review-of-its-utility-acceptability-and-effectiveness
#18
M Rus-Calafell, P Garety, E Sason, T J K Craig, L R Valmaggia
Over the last two decades, there has been a rapid increase of studies testing the efficacy and acceptability of virtual reality in the assessment and treatment of mental health problems. This systematic review was carried out to investigate the use of virtual reality in the assessment and the treatment of psychosis. Web of Science, PsychInfo, EMBASE, Scopus, ProQuest and PubMed databases were searched, resulting in the identification of 638 articles potentially eligible for inclusion; of these, 50 studies were included in the review...
July 24, 2017: Psychological Medicine
https://www.readbyqxmd.com/read/28735509/diagnostic-utility-of-automated-surefish-dako-omnis-in-the-diagnosis-of-musculoskeletal-translocation-related-sarcomas
#19
Shintaro Sugita, Tomoyuki Aoyama, Yoshimasa Ito, Hiroko Asanuma, Taro Sugawara, Keiko Segawa, Yumika Ito, Noriaki Kikuchi, Mitsuhiro Tsujiwaki, Hiromi Fujita, Yusuke Ono, Tadashi Hasegawa
Fluorescence in situ hybridization (FISH) is an essential tool for genetic diagnosis in daily pathological work. Almost full automation of FISH can be achieved with the recently released automated SureFISH platform (Dako Omnis, Agilent Technologies, Santa Clara, CA, USA). Its utility has been reported in HER2 amplification of breast and gastric carcinoma and ALK-rearranged lung cancer. Here, we examined the utility of automated SureFISH for the identification of rearrangement signals in translocation-related sarcomas (TRSs), including 11 EWSR1-rearranged and 10 synovial sarcoma cases, compared with non-automated conventional FISH using the same specimens...
July 22, 2017: Pathology International
https://www.readbyqxmd.com/read/28735455/examining-the-role-of-income-inequality-and-neighborhood-walkability-on-obesity-and-physical-activity-among-low-income-hispanic-adults
#20
Samuel D Towne, Michael L Lopez, Yajuan Li, Matthew Lee Smith, Judith L Warren, Alexandra E Evans, Marcia G Ory
Obesity is a major public health issue affecting rising medical costs and contributing to morbidity and premature mortality. We aimed to identify factors that may play a role in obesity and physical activity at the individual and environmental/neighborhood levels. We analyzed data from an adult sample who were parents of students enrolled in a school-based health and wellness program. The sample was restricted to those who were Hispanic and whose children were on free/reduced lunch (n = 377). Dependent variables: body mass index (BMI); neighborhood walkability...
July 22, 2017: Journal of Immigrant and Minority Health
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