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https://www.readbyqxmd.com/read/29783168/fluorescence-probes-for-real-time-remote-cyanobacteria-monitoring-a-review-of-challenges-and-opportunities
#1
REVIEW
Edoardo Bertone, Michele A Burford, David P Hamilton
In recent years, there has been a widespread deployment of submersible fluorescence sensors by water utilities. They are used to measure diagnostic pigments and estimate algae and cyanobacteria abundance in near real-time. Despite being useful and promising tools, operators and decision-makers often rely on the data provided by these probes without a full understanding of their limitations. As a result, this may lead to wrong and misleading estimations which, in turn, means that researchers and technicians distrust these sensors...
May 10, 2018: Water Research
https://www.readbyqxmd.com/read/29776518/factors-associated-with-life-jacket-use-among-cabin-sailboat-and-day-sailor-boaters-in-the-united-states
#2
Natalie Spitzer, Maile T Phillips, Wendy Chow, Thomas W Mangione
INTRODUCTION: In 2015, drowning accounted for 68% of the 626 recreational boating related deaths in the United States. Although life jackets are estimated to prevent between 50% to 80% of boating deaths, approximately 83% of sailboat-related drowning victims were reported to not be wearing life jackets. Life jacket use among adult boaters has remained consistently low across most boat types and may vary by boater, boating, and environmental conditions. Although many risky environmental and boating factors may be associated with a higher risk of boating death, drowning occurs in all situations and it is useful to understand adult life jacket wearing behaviors in differing boating situations...
June 2018: Journal of Safety Research
https://www.readbyqxmd.com/read/29775772/occurrence-genotyping-and-health-risk-of-cryptosporidium-and-giardia-in-recreational-lakes-in-tianjin-china
#3
Shumin Xiao, Pengna Yin, Yan Zhang, Xiaoyun Zhao, Liping Sun, Hongying Yuan, Jingfang Lu, Sike Hu
Cryptosporidium and Giardia are critical parasites in the etiology of diarrhea worldwide, and often cause waterborne outbreaks. The presence of Cryptosporidium and Giardia in recreational lakes was investigated with molecular characterization, and a comprehensive quantitative microbial risk assessment (QMRA) of protozoan infections was performed, considering multiple exposure pathways, differences in age, sex, and disease severity, and the genotypes of the protozoa. Forty-three (82.7%) and 51 (98.1%) water samples were positive for Cryptosporidium oocysts and Giardia cysts, respectively, with average counts of 3...
May 10, 2018: Water Research
https://www.readbyqxmd.com/read/29772486/quantitative-microbial-risk-assessment-of-microbial-source-tracking-markers-in-recreational-water-contaminated-with-fresh-untreated-and-secondary-treated-sewage
#4
Warish Ahmed, Kerry A Hamilton, Aldo Lobos, Bridie Hughes, Christopher Staley, Michael J Sadowsky, Valerie J Harwood
Microbial source tracking (MST) methods have provided the means to identify sewage contamination in recreational waters, but the risk associated with elevated levels of MST targets such as sewage-associated Bacteroides HF183 and other markers is uncertain. Quantitative microbial risk assessment (QMRA) modeling allows interpretation of MST data in the context of the risk of gastrointestinal (GI) illness caused by exposure to known reference pathogens. In this study, five sewage-associated, quantitative PCR (qPCR) MST markers [Bacteroides HF183 (HF183), Methanobrevibacter smithii nifH (nifH), human adenovirus (HAdV), human polyomavirus (HPyV) and pepper mild mottle virus (PMMoV)] were evaluated to determine at what concentration these nucleic acid markers reflected a significant health risk from exposure to fresh untreated or secondary treated sewage in beach water...
May 14, 2018: Environment International
https://www.readbyqxmd.com/read/29764527/an-outbreak-of-haemorrhagic-fever-with-renal-syndrome-linked-with-mountain-recreational-activities-in-zagreb-croatia-2017
#5
Z Lovrić, B Kolarić, M L Kosanović Ličina, M Tomljenović, O Đaković Rode, K Danis, B Kaić, V Tešić
In 2017 Zagreb faced the largest outbreak of haemorrhagic fever with renal syndrome (HFRS) to date. We investigated to describe the extent of the outbreak and identify risk factors for infection. We compared laboratory-confirmed cases of Hantavirus infection in Zagreb residents with the onset of illness after 1 January 2017, with individually matched controls from the same household or neighbourhood. We calculated adjusted matched odds ratios (amOR) using conditional logistic regression. During 2017, 104 cases were reported: 11-81 years old (median 37) and 71% (73) male...
May 16, 2018: Epidemiology and Infection
https://www.readbyqxmd.com/read/29763862/hydrogen-peroxide-treatment-promotes-chlorophytes-over-toxic-cyanobacteria-in-a-hyper-eutrophic-aquaculture-pond
#6
Zhen Yang, Riley P Buley, Edna G Fernandez-Figueroa, Mario U G Barros, Soorya Rajendran, Alan E Wilson
Controlling blooms of toxigenic phytoplankton, including cyanobacteria, is a high priority for managers of aquatic systems that are used for drinking water, recreation, and aquaculture production. Although a variety of treatment approaches exist, hydrogen peroxide (H2 O2 ) has the potential to be an effective and ecofriendly algaecide given that this compound may select against cyanobacteria while not producing harmful residues. To broadly evaluate the effectiveness of H2 O2 on toxigenic phytoplankton, we tested multiple concentrations of H2 O2 on (1) four cyanobacterial cultures, including filamentous Anabaena, Cylindrospermopsis, and Planktothrix, and unicellular Microcystis, in a 5-day laboratory experiment and (2) a dense cyanobacterial bloom in a 7-day field experiment conducted in a nutrient-rich aquaculture pond...
May 12, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29761039/fine-grained-compositional-analysis-of-port-everglades-inlet-microbiome-using-high-throughput-dna-sequencing
#7
Lauren O'Connell, Song Gao, Donald McCorquodale, Jay Fleisher, Jose V Lopez
Background: Similar to natural rivers, manmade inlets connect inland runoff to the ocean. Port Everglades Inlet (PEI) is a busy cargo and cruise ship port in South Florida, which can act as a source of pollution to surrounding beaches and offshore coral reefs. Understanding the composition and fluctuations of bacterioplankton communities ("microbiomes") in major port inlets is important due to potential impacts on surrounding environments. We hypothesize seasonal microbial fluctuations, which were profiled by high throughput 16S rRNA amplicon sequencing and analysis...
2018: PeerJ
https://www.readbyqxmd.com/read/29758433/on-the-spatial-relationship-between-ecosystem-services-and-urbanization-a-case-study-in-wuhan-china
#8
Yan Zhang, Yanfang Liu, Yang Zhang, Yi Liu, Guangxia Zhang, Yiyun Chen
A clear understanding of the relationship between ecosystem services (ESs) and urbanization provides new insight into urban landscape planning and decision making. Although a considerable amount of literature has focused on this topic, few studies address the spatial interactions between ESs and urbanization, especially at the local scale. Various models and multisource data were integrated to estimate ESs and urbanization in Wuhan City, China. The bivariate Moran's I methods were employed to test and visualize the spatial correlations between ESs and urbanization...
May 11, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29745801/cold-water-immersion-after-training-sessions-effects-on-fiber-type-specific-adaptations-in-muscle-k-transport-proteins-to-sprint-interval-training-in-men
#9
Danny Christiansen, David John Bishop, James R Broatch, Jens Bangsbo, Michael John McKenna, Robyn M Murphy
Effects of regular use of cold-water immersion (CWI) on fiber type-specific adaptations in muscle K+ transport proteins to intense training, along with their relationship to changes in mRNA levels after the first training session, were investigated in humans. Nineteen recreationally-active men (24{plus minus}6 y, 79.5{plus minus}10.8 kg, 44.6{plus minus}5.8 mL∙kg-1 ∙min-1 ) completed six weeks of sprint-interval cycling either without (passive rest; CON) or with training sessions followed by CWI (15 min at 10{degree sign}C; COLD)...
May 10, 2018: Journal of Applied Physiology
https://www.readbyqxmd.com/read/29738574/prevalence-and-characterization-of-escherichia-coli-isolated-from-the-upper-oconee-watershed-in-northeast-georgia
#10
Sohyun Cho, Lari M Hiott, John B Barrett, Elizabeth A McMillan, Sandra L House, Shaheen B Humayoun, Eric S Adams, Charlene R Jackson, Jonathan G Frye
Surface waters are important sources of water for drinking, industrial, agricultural, and recreational uses; hence, contamination of water by fecal, pathogenic, or antimicrobial resistant (AR) bacteria is a major environmental and public health concern. However, very little data is available on prevalence of these bacteria in surface water throughout a watershed. This study aimed to characterize Escherichia coli present in the Upper Oconee Watershed, a mixed-use watershed in Athens, GA, USA for potential pathogenicity and AR...
2018: PloS One
https://www.readbyqxmd.com/read/29734602/monitoring-e-coli-in-a-changing-beachscape
#11
Chelsea J Weiskerger, Richard L Whitman
Increased emphasis on protection of recreational water quality has led to extensive use of fecal indicator bacteria monitoring of coastal swimming waters in recent years, allowing for long-term, widespread retrospective studies. These studies are especially important for tracking environmental changes and perturbations in regional waters. We show that E. coli concentrations (EC) have decreased in Lake Michigan over the last 15years, coincident with the rapid invasion of Eurasian quagga mussels (Dreissenidae)...
April 1, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29723833/assessing-changes-in-the-value-of-ecosystem-services-in-response-to-land-use-land-cover-dynamics-in-nigeria
#12
Aisha Olushola Arowolo, Xiangzheng Deng, Olusanya Abiodun Olatunji, Abiodun Elijah Obayelu
Increasing human activities worldwide have significantly altered the natural ecosystems and consequently, the services they provide. This is no exception in Nigeria, where land-use/land-cover has undergone a series of dramatic changes over the years mainly due to the ever-growing large population. However, estimating the impact of such changes on a wide range of ecosystem services is seldom attempted. Thus, on the basis of GlobeLand30 land-cover maps for 2000 and 2010 and using the value transfer methodology, we evaluated changes in the value of ecosystem services in response to land-use/land-cover dynamics in Nigeria...
April 30, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29715644/incidence-of-somatic-and-f-coliphage-in-great-lake-basin-recreational-waters
#13
Pauline Wanjugi, Mano Sivaganesan, Asja Korajkic, Brian McMinn, Catherine A Kelty, Eric Rhodes, Mike Cyterski, Richard Zepp, Kevin Oshima, Elyse Stachler, Julie Kinzelman, Stephan R Kurdas, Mark Citriglia, Fu-Chih Hsu, Orin C Shanks
There is a growing interest for the use of coliphage as an alternative indicator to assess fecal pollution in recreational waters. Coliphage are a group of viruses that infect Escherichia coli and are considered as potential surrogates to infer the likely presence of enteric viral pathogens. We report the use of a dead-end hollow fiber ultrafiltration single agar layer method to enumerate F+ and somatic coliphage from surface waters collected from three Great Lake areas. At each location, three sites (two beaches; one river) were sampled five days a week over the 2015 beach season (n = 609 total samples)...
April 25, 2018: Water Research
https://www.readbyqxmd.com/read/29713617/community-based-policies-and-support-for-free-drinking-water-access-in-outdoor-areas-and-building-standards-in-u-s-municipalities
#14
Sohyun Park, Stephen Onufrak, Cara Wilking, Angie Cradock
We examined community-level characteristics associated with free drinking water access policies in U.S. municipalities using data from a nationally representative survey of city managers/officials from 2,029 local governments in 2014. Outcomes were 4 free drinking water access policies. Explanatory measures were population size, rural/urban status, census region, poverty prevalence, education, and racial/ethnic composition. We used multivariable logistic regression to test differences and presented only significant findings...
April 2018: Clinical Nutrition Research
https://www.readbyqxmd.com/read/29697511/establishing-radiological-screening-levels-for-defense-related-uranium-mine-drum-sites-on-blm-land-using-a-recreational-future-use-scenario
#15
Steven H Brown, Russel Edge, John Elmer, Michael McDonald
Thousands of former uranium mining sites in the United States, primarily in the southwestern states of Colorado, Arizona, New Mexico, Arizona, and Utah, are being identified and evaluated to assess their potential for causing public and environmental impacts. The common radiological contaminant of concern that characterizes these sites is naturally occurring uranium ore and associated wastes that may have been left behind postmining. The majority of these sites were abandoned and in general, are referred to as abandoned uranium mines, regardless of the government authority currently managing the land or in some cases, assigned responsibility for the oversight of assessment and remediation...
June 2018: Health Physics
https://www.readbyqxmd.com/read/29687197/influence-of-fishing-activity-over-the-marine-debris-composition-close-to-coastal-jetty
#16
Eduardo G G Farias, Paulo R Preichardt, David V Dantas
Worldwide, the marine debris emissions have been provoking impacts in ecosystems, generating massive mortality of different species with commercial interest. In South America, we have a lack of studies to verify the marine debris composition in transitional environments such as adjacent regions of coastal jetties. These are hydraulic engineering constructions used to maintain the navigation channel access between the sea-estuarine interface and are also used by teleost fishes, crustaceans, and mollusks like artificial shelters (reefs), being excellent fishing grounds...
April 23, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29679300/quantitative-microbial-risk-assessment-and-infectious-disease-transmission-modeling-of-waterborne-enteric-pathogens
#17
REVIEW
Andrew F Brouwer, Nina B Masters, Joseph N S Eisenberg
PURPOSE OF REVIEW: Waterborne enteric pathogens remain a global health threat. Increasingly, quantitative microbial risk assessment (QMRA) and infectious disease transmission modeling (IDTM) are used to assess waterborne pathogen risks and evaluate mitigation. These modeling efforts, however, have largely been conducted independently for different purposes and in different settings. In this review, we examine the settings where each modeling strategy is employed. RECENT FINDINGS: QMRA research has focused on food contamination and recreational water in high-income countries (HICs) and drinking water and wastewater in low- and middle-income countries (LMICs)...
April 20, 2018: Current Environmental Health Reports
https://www.readbyqxmd.com/read/29656639/mitigating-the-expansion-of-harmful-algal-blooms-across-the-freshwater-to-marine-continuum
#18
Hans W Paerl, Timothy G Otten, Raphael Kudela
Anthropogenic nutrient overenrichment, coupled with rising temperatures, and an increasing frequency of extreme hydrologic events (storms and droughts) are accelerating eutrophication and promoting the expansion of harmful algal blooms (HABs) across the freshwater-to-marine continuum. All HABs-with a focus here on cyanobacterial blooms-pose serious consequences for water supplies, fisheries, recreational uses, tourism, and property values. As nutrient loads grow in watersheds, they begin to compound the effects of legacy stores...
April 25, 2018: Environmental Science & Technology
https://www.readbyqxmd.com/read/29652045/-the-medical-recreational-and-balneotherapeutic-regions-of-the-krasnoyarsk-territory
#19
N K Dzhabarova, N G Sidorina, I N Smirnova, A A Kokhanenko, N G Klopotova
BACKGROUND: the creation of the efficient system of the spa and health resort-based health care for the population of the entire territory of the Russian Federation requires the systematic evaluation and protection of the natural resources of country as a basis for the further development of the health resort and recreation facilities in different regions. AIM: The objective of the present study was to estimate the possibilities of expansion of the health resort and recreational activities based on the rational exploitation of the natural resources of the medical-recreational and balneotherapeutic areas of the Krasnoyarsk Territory...
April 9, 2018: Voprosy Kurortologii, Fizioterapii, i Lechebnoĭ Fizicheskoĭ Kultury
https://www.readbyqxmd.com/read/29650570/draft-genome-sequence-of-aeromonas-lusitana-sp-nov-strain-dsm-24905-t-isolated-from-a-hot-spring-in-vila-real-portugal
#20
S M Colston, A Navarro, A J Martinez-Murcia, J Graf
Aeromonas lusitana sp. nov. is an isolate derived from a study aimed at characterizing Aeromonas spp. from water sources used for recreation and agricultural purposes and assessing the implications these organisms have for human and animal health. We present here the 4.52-Mbp draft genome sequence of this novel species.
April 12, 2018: Genome Announcements
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