Search Results - "Davies‐Colley, Rob"

Weak numerical comparability of ISO‐7027‐compliant nephelometers. Ramifications for turbidity measurement applications by Davies‐Colley, Rob, Hughes, Andrew O., Vincent, Alex G., Heubeck, Stephan

“…Nephelometric turbidity, a measure of light scattering by particles suspended in water, is commonly used for indicating water clarity or suspended particulate…”
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Planted Riparian Buffer Zones in New Zealand: Do They Live Up to Expectations? by Parkyn, Stephanie M., Davies-Colley, Rob J., Halliday, N. Jane, Costley, Kerry J., Croker, Glenys F.

“…River and stream rehabilitation projects are increasing in number, but the success or failure of these projects has rarely been evaluated, and the extent to…”
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A portable underway flow‐through sampler for rapid survey of contaminated river plumes in coastal waters by Gall, Mark, Davies‐Colley, Rob

“…Land‐sourced contaminants conveyed by rivers, particularly during flood flows, are a major source of coastal water degradation. Typically, muddy and…”
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Water quality impact of a dairy cow herd crossing a stream by Davies-Colley, Rob J., Nagels, John W., Smith, Rob A., Young, Roger G., Phillips, Chris J.

“…The water quality impact of a herd of 246 dairy cows crossing a stream ford was documented. Two cow crossings produced plumes of turbid water associated with…”
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Characterizing the variability of wood in streams: simulation modelling compared with multiple-reach surveys by Meleason, Mark A., Davies-Colley, Rob J., Hall, Graeme M. J.

“…Wood abundance in streams is an indicator of its likely geomorphological and ecological importance. However, wood volume estimates can be highly variable, due…”
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Localized erosion affects national carbon budget by Scott, Durelle T., Baisden, W. Troy, Davies-Colley, Rob, Gomez, Basil, Hicks, D. Murray, Page, Michael J., Preston, Nicholas J., Trustrum, Noel A., Tate, Kevin R., Woods, Ross A.

“…Small mountainous rivers discharge disproportionate amounts of sediment and carbon to the Earth's oceans. Our New Zealand data demonstrates that localized…”
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Community volunteer assessment of recreational water quality in the Hutt River, Wellington by Valois, Amanda E., Milne, Juliet R., Heath, Mark W., Davies-Colley, Rob J., Martin, Emily, Stott, Rebecca

“…Water is an important component of many recreational opportunities and New Zealand invests significant resources in recreational water quality (RWQ) monitoring…”
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Exceptional visual clarity and optical purity in a sub-alpine lake by Gall, Mark P., Davies-Colley, Rob J., Merrilees, Rob A.

“…Blue Lake, a remote sub-alpine lake, in Nelson Lakes National Park, New Zealand, has exceptional optical purity. Horizontal sighting range (‘visibility’) on…”
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Characteristics and Geomorphic Effect of Wood in New Zealand's Native Forest Streams by Meleason, Mark A., Davies-Colley, Rob, Wright-Stow, Aslan, Horrox, Jonny, Costley, Kerry

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Sediment-related water quality of small hill-country streams near Whatawhata, New Zealand. Response to integrated catchment management (ICM) by Davies-Colley, Rob, Hughes, Andrew

“…Degradation of aquatic ecosystems by fine sediment is a global environmental problem, and damages reflect particle properties as well as mass concentration. We…”
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Predicting visual clarity and light penetration from water quality measures in New Zealand estuaries by Gall, Mark, Swales, Andrew, Davies-Colley, Rob, Bremner, David

“…Estuaries are biogeochemically and physically dynamic environments, resulting in diverse optical water properties that vary in space and time. This natural…”
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Faecal contamination and visual clarity in New Zealand rivers: correlation of key variables affecting swimming suitability by Davies-Colley, Rob, Valois, Amanda, Milne, Juliet

“…Swimming is a popular activity in Aotearoa-New Zealand (NZ). Two variables that strongly influence swimming suitability of waters are faecal contamination, as…”
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Suspended sediment and faecal contamination in a stormflow plume from the Hutt River in Wellington Harbour, New Zealand by Gall, Mark P., Davies-Colley, Rob, Milne, Juliet, Stott, Rebecca

“…Muddy, faecally-contaminated river flood plumes in coastal waters are a hazard to contact recreation and bivalve shellfish consumption but are difficult to…”
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Suspended sediment properties and visual clarity of the Manawatū River, New Zealand by Davies-Colley, Rob J., Hughes, Andrew O., Haddadchi, Arman, Dymond, John R., Vale, Simon S., Smith, Hugh G.

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Comparison of faecal indicator and viral pathogen light and dark disinfection mechanisms in wastewater treatment pond mesocosms by Park, Jason B.K., Weaver, Louise, Davies-Colley, Rob, Stott, Rebecca, Williamson, Wendy, Mackenzie, Margaret, McGill, Erin, Lin, Susan, Webber, Judith, Craggs, Rupert J.

“…This study compared light and dark disinfection of faecal bacteria/viral indicator organisms (E. coli and MS2 (fRNA) bacteriophage) and human viruses…”
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The stream hydrology response of converting a headwater pasture catchment to Pinus radiata plantation by Hughes, Andrew O., Davies-Colley, Rob, Bellingham, Margaret, van Assema, Gareth

“…The planting of degraded land with tree plantations may be effective at improving land use sustainability and profitability but it can also have significant…”
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Reproducibility of river water quality measurements: inter-agency comparisons for quality assurance by Davies-Colley, Rob, Milne, Juliet, Heath, Mark W.

“…We assessed the reproducibility of river state-of-environment (SoE) water quality measurements in the Wellington Region, New Zealand (NZ). Field staff from…”
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Challenges for contact recreation in a tropical urban lake: assessment by a water quality index by Lopes, Frederico Azevedo, Davies-Colley, Rob, Piazi, Júlia, Silveira, Juliana Souza, Leite, Andrea Coelho, Lopes, Natália Isabel Azevedo

“…Water pollution control is challenging in catchments affected by ‘informal’ urban development. Lake Pampulha, an impoundment that is a major tourist focus…”
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Stormflow-dominated loads of faecal pollution from an intensively dairy-farmed catchment by Davies-Colley, R, Nagels, J, Lydiard, E

“…Rainstorms can flush large amounts of faecal pollution from land sources into water bodies, threatening, particularly, contact recreation and bivalve shellfish…”
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“Livewood”: Geomorphic and Ecological Functions of Living Trees in River Channels by Opperman, Jeffrey J., Meleason, Mark, Francis, Robert A., Davies-Colley, Rob

“…Although the geomorphic and ecological importance of large wood in streams and rivers is well recognized, most studies consider only dead wood in channels…”
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