Nitrogen, phosphorus and<i>E. coli</i>loads in the Sherry River, New Zealand

Ballantine, Deborah J.; Davies-Colley, RJ

doi:10.1080/00288330.2013.815640

Cited by 6 publications

(6 citation statements)

References 34 publications

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“…Most countries have their own modelling systems that are used to determine the water quality of bodies of water. Two examples of WQIs used by governments today are the Canadian Council of Ministers for Environment (CCME) [27] and Aggregation Functions [28]. The CCME is primarily used in New Zealand and Canada while the use of aggregation functions has been popularised in the United States of America (USA).…”

Section: Water Quality Assessment Modelsmentioning

confidence: 99%

Low-cost IoT based system for lake water quality monitoring

Lal,

Menon,

Noble

et al. 2024

PLoS ONE

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Water quality monitoring is a critical process in maintaining the well-being of aquatic ecosystems and ensuring growth of the surrounding environment. Clean water supports and maintains the health, livelihoods, and ecological balance of the ecosystem as a whole. Regular assessment of water quality is essential to ensure clean and reliable water is available to everyone. This requires regular measurement of pollutants or contaminants in water that can be monitored in real-time. Hence, this research showcases a system that consists of low-cost sensors used to measure five basic parameters of water quality that are: turbidity, total dissolved solids, temperature, pH, and dissolved oxygen. The system incorporates electronics and IoT technology that are powered by a solar charged lead acid battery. The data gathered from the sensors was stored locally on a micro-SD card with live updates that could be viewed on a mobile device when in proximity to the system. Data was gathered from three different bodies of water over a span of three weeks, precisely during the seasonal transition from autumn to winter. We adopted a water sampling technique since our low-cost sensors were not designed for continuous submersion. The results show that the temperature drops gradually during this period and an inversely proportional relationship between pH and temperature could be observed. The concentration of total dissolved solids decreased during rainy periods with a variation in turbidity. The deployed system was robust and autonomous that effectively monitored the quality of water in real-time with scope of adding more sensors and employing Industry 4.0 paradigm to predict variations in water quality.

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Section: Water Quality Assessment Modelsmentioning

confidence: 99%

Low-cost IoT based system for lake water quality monitoring

Lal,

Menon,

Noble

et al. 2024

PLoS ONE

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“…In these land types, transport of nitrates via the soil matrix and dissolved forms of pesticides via preferential flow paths is most common (Steenhuis and Parlange, ). Note that nitrate also moves in preferential flow paths, however the amount is generally substantially less than the fraction moved in matrix flow (e.g., Zhang et al ., ; Parn et al ., ; Spence et al ., ; Ballantine and Davies‐Colley, ). Nitrate in preferential flow is therefore less of a concern in groundwater.…”

Section: Conceptual Framework For Targeting Bmpsmentioning

confidence: 99%

Agricultural BMP Effectiveness and Dominant Hydrological Flow Paths: Concepts and a Review

Rittenburg

Squires

Boll

et al. 2015

J American Water Resour Assoc

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We present a conceptual framework that relates agricultural best management practice (BMP) effectiveness with dominant hydrological flow paths to improve nonpoint source (NPS) pollution management. We use the framework to analyze plot, field and watershed scale published studies on BMP effectiveness to develop transferable recommendations for BMP selection and placement at the watershed scale. The framework is based on the location of the restrictive layer in the soil profile and distinguishes three hydrologic land types. Hydrologic land type A has the restrictive layer at the surface and BMPs that increase infiltration are effective. In land type B1, the surface soil has an infiltration rate greater than the prevailing precipitation intensity, but there is a shallow restrictive layer causing lateral flow and saturation excess overland flow. Few structural practices are effective for these land types, but pollutant source management plans can significantly reduce pollutant loading. Hydrologic land type B2 has deep, well-draining soils without restrictive layers that transport pollutants to groundwater via percolation. Practices that increased pollutant residence time in the mixing layer or increased plant water uptake were found as the most effective BMPs in B2 land types. Matching BMPs to the appropriate land type allows for better targeting of hydrologically sensitive areas within a watershed, and potentially more significant reductions of NPS pollutant loading.(KEY TERMS: best management practices; nonpoint source pollution; watershed management; agriculture.) Rittenburg, Rebecca A., Audrey L. Squires, Jan Boll, Erin S. Brooks, Zachary M. Easton, and Tammo S. Steenhuis, 2015. Agricultural BMP Effectiveness and Dominant Hydrological Flow Paths: Concepts and a Review.

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“…Most of the natural remnants that exist are considered too small, fragmented and isolated to maintain the biodiversity that was once present (Meurk et al 1995;Bretherton & Given, 2002;Meurk 2008). Extensive and rapid conversion to centre pivot spray irrigation and more intensive farm management systems has also raised environmental concerns about water use, fertiliser input, waste management and nitrogen and phosphorus enrichment of water bodies (Di & Cameron 2002;Houlbrooke et al 2004;Clark et al 2007;Ballantine & Davies-Colley 2013). There is now considerable interest in restoration of native biodiversity within this landscape (Meurk & Swaffield 2000).…”

Section: Introductionmentioning

confidence: 99%

Persistence of biodiversity in a dryland remnant within an intensified dairy farm landscape

Bowie

Black²,

Boyer³

et al. 2016

NZ J Ecol

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Abstract:The lowland Canterbury Plains of New Zealand have been extensively modified since human occupation, but with recent conversions to irrigated dairy farming very few remnants of native dryland vegetation remain in the region. We investigated soil chemistry, plant distribution and soil invertebrates along transects in Bankside Scientific Reserve, a small (2.6 ha) remnant. The vegetation is a mosaic of native woody shrubs, predominantly Kunzea serotina (kanuka, Myrtaceae) and Discaria toumatou (matagouri, Rhamnaceae), and dry grassland. Changed soil conditions appear to have made the reserve less conducive for native species, but better suited to invasion by exotic plants. Compared with detailed surveys before the dairy conversion, only 31% of the original 65 native vascular plant species were recorded in the present study and 27 new exotic species had arrived since the original survey. Soil nutrient concentrations and pH were lower in the reserve than in surrounding farmland; peaks of nitrate and ammonium were recorded at the boundary. Soil phosphate was elevated in lower-lying areas within the reserve, an effect associated with natural drainage channels and evident up to 20 m into the reserve. Four species of native megascolecid earthworms were found in the reserve but not in neighbouring pasture, whereas the diversity and abundance of beetles and spiders in the reserve was similar to that observed at least 10 m into surrounding farmland. This study highlights the importance of the soil environment in sustaining biodiversity. We conclude that this remnant retains valuable communities of native species, but is apparently being impacted by phosphate encroachment and habitat fragmentation. This does not appear to be an intractable management issue for the interface between agricultural systems and conservation sites within a dairy landscape mosaic. We suggest that attention is required to maintain buffer zones adjacent to small, isolated and vulnerable remnants of original biota that are surrounded by intensive agriculture.

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Nitrogen, phosphorus andE. coliloads in the Sherry River, New Zealand

Cited by 6 publications

References 34 publications

Low-cost IoT based system for lake water quality monitoring

Low-cost IoT based system for lake water quality monitoring

Agricultural BMP Effectiveness and Dominant Hydrological Flow Paths: Concepts and a Review

Persistence of biodiversity in a dryland remnant within an intensified dairy farm landscape

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