The study assessed the performance characteristics of host sensitivity, specificity and concentration for seven human wastewater- six animal scat-associated marker genes by analysing wastewater scat samples from urban catchments mega-coastal city Sydney, Australia. Absolute sensitivity was exhibited across three criteria used to assess wastewater-associated cross-assembly phage (CrAssphage), adenovirus (HAdV), Bacteroides HF183 (HF183), polyomavirus (HPyV), Lachnospiraceae (Lachno3),...

Quantitative microbial risk assessment (QMRA) of human health risks using fecal marker genes (HFMGs) is an useful water quality management tool. To inform accurate QMRA analysis, generation probability distribution functions for HFMGs, and reference pathogenic viruses can be improved by input correlation ratios based upon measurement HFMGs gene copies (GC) in untreated wastewater. The concentrations four (Bacteroides HF183, Lachnospiraceae Lachno3, CrAssphage pepper mild mottle virus...

This research investigated the in-situ decay rates of four human wastewater-associated markers (Bacteroides HF183 (HF183), Lechnospiraceae Lachno3 (Lachno3), cross-assembling phage (crAssphage), pepper mild mottle virus (PMMoV) and three enteric viruses (human adenovirus 40/41 (HAdV 40/41), enterovirus (EV) norovirus GII (HNoV GII) in estuarine water environments temperate Sydney, NSW, Australia, employing qPCR RT-qPCR assays. The study also aimed to compare observed mesocosms with...

This study establishes site-specific risk-based thresholds (RBTs) for sewage-associated markers, including Bacteroides HF183 (HF183), Lachnospiraceae Lachno3 (Lachno3), cross-assembly phage (CrAssphage), and pepper mild mottle virus (PMMoV), utilizing quantitative microbial risk assessment (QMRA) recreational estuarine waters (EW). The QMRA model simulates health risks from ingestion of EW contaminated with untreated sewage. RBTs were estimated considering decay rates concentrations markers...

Emergent trees, which are taller than surrounding trees with exposed crowns, provide crucial services to several rainforest species especially endangered primates such as gibbons and siamangs (Hylobatidae). Hylobatids show a preference for emergent sleeping sites vocal displays, however, they under threat from both habitat modifications the impacts of climate change. Traditional plot-based ground surveys have limitations in detecting mapping across landscape, dense tropical forests. In this...

This study investigated the decay rates of wastewater-associated markers and enteric viruses in laboratory microcosms mimicking estuarine water environments temperate Sydney, NSW, Australia using qPCR RT-qPCR assays. The results demonstrated reduction concentrations Bacteroides HF183, Lachnospiraceae Lachno3, cross-assembly phage (crAssphage), pepper mild mottle virus (PMMoV), human adenovirus (HAdV 40/41), enterovirus (EV) over a span 42 days under spring/summer temperatures,...

The current microbial source tracking (MST) study tracked the reduction of culturable fecal indicator bacteria enterococci, four human markers (Bacteroides HF183, Lachnospiraceae Lachno3, cross-assembly phage (CrAssphage) and pepper mild mottle virus (PMMoV)) along with enteric viruses - adenovirus 40/41 (HAdV 40/41), enterovirus (EV), norovirus GI (HNoV GI) GII GII) post wet weather overflows (WWOs) at two estuarine water sites from depths under separate six-day sampling campaigns over...

Abstract Sleeping tree selection and related behaviours of a family group solitary female siamang ( Symphalangus syndactylus ) were investigated over 5-month period in northern Sumatra, Indonesia. We performed all day follows, sleeping surveys forest plot enumerations the field. tested whether: (1) physical characteristics trees surrounding trees, together with behaviours, supported based on predation risk access requirements; (2) preferences similar to those group; (3) site locations within...

Parsons has participated in the Environmental Security Technology Certification Program (ESTCP) unexploded ordnance (UXO) Discrimination Study at Camp Sibert, Alabama, and most recently San Luis Obispo (SLO), California. In 2008, ground truth results from Sibert were used to identify commonly target parameters EM61-MK2 data that would improve classification of munitions clutter. UXA-Size (size), a parameter based on instrument response across three major axes an object, decay constant...

The quality of geophysical data is a critical aspect the digital mapping process. Human factors in can affect navigation, background noise, and speed control, impacting quality. An important issue facing MEC geophysicists to find ways limit these as first step towards successful consistent reproducible surveying. acquisition errors be significantly improved with self-guidance/robotic technology. ESTCP Huntsville Innovative Technology Program funded Auburn University develop path-following...

Parsons has participated in the Environmental Security Technology Certification Program (ESTCP) unexploded ordnance (UXO) Discrimination Study at Camp Sibert, Alabama, and most recently San Luis Obispo (SLO), California. In 2008, ground truth results from Sibert were used to identify commonly target parameters EM61‐MK2 data that would improve classification of munitions clutter. UXA‐Size (size), a parameter based on instrument response across three major axes an object, decay constant...

The quality of geophysical data is a critical aspect the digital mapping process. Human factors in can affect navigation, background noise, and speed control, impacting quality. An important issue facing MEC geophysicists to find ways limit these as first step towards successful consistent reproducible surveying. acquisition errors be significantly improved with self‐guidance/robotic technology. ESTCP Huntsville Innovative Technology Program funded Auburn University develop path‐following...

Accurate and repeatable positioning is central to quality digital geophysical mapping. Varying field conditions, such as residential development, tree canopy, terrain, often require a multiinstrument approach collecting positional data at given site. Although each instrument contributes overcoming these collection obstacles, the inability transition between instruments can undermine an otherwise successful effort. In August 2007, Parsons conducted mapping within areas of Former Brooksville...

Discriminating between MEC-like and non-MEC-like objects is currently one of the most important challenges facing ordnance geophysicists. The apparent decay constant measured by time<br>domain electromagnetic sensors such as Geonics’ EM61-MK2 has proven to be a useful tool for this type discrimination. While more sophisticated inversion methods may provide better discrimination results than simple analysis, measurements using can implemented efficiently are relatively insensitive...

Accurate and repeatable positioning is central to quality digital geophysical mapping. Varying field conditions, such as residential development, tree canopy, terrain, often require a multi‐instrument approach collecting positional data at given site. Although each instrument contributes overcoming these collection obstacles, the inability transition between instruments can undermine an otherwise successful effort. In August 2007, Parsons conducted mapping within areas of Former Brooksville...

Discriminating between MEC‐like and non‐MEC‐like objects is currently one of the most important challenges facing ordnance geophysicists. The apparent decay constant measured by time domain electromagnetic sensors such as Geonics' EM61‐MK2 has proven to be a useful tool for this type discrimination. While more sophisticated inversion methods may provide better discrimination results than simple analysis, measurements using can implemented efficiently are relatively insensitive positioning...