M. M. Rutherford results 58
· Newest (Page 1/3, per page 25)
Author: M. M. Rutherford ×Clear All Filters
Search Results
Offshore fossil fuel extraction and marine conservation: intensifying regulatory challenges in AustraliaNARA Subscribed
Conflicts between marine conservation and extractive industries are escalating globally. This is particularly evident in Australia, where societal perceptions of sustainability, climate concerns, and socio-ecological ideals clash with government economic priorities and fossil fuel interests. Australia’s offshore petroleum licensing and regulatory processes are examined, focusing on the initial decision to release offshore acre...
Ocean acidification (OA) generally receives far less consideration than other climate stressors and related hazards, such as global warming and extreme weather events. Canada is uniquely vulnerable to OA given its extensive coastal oceans, the oceanographic processes in its three basins, accelerated warming and sea-ice melt, and extensive coastal communities and maritime economic sectors. Canada’s coastline is also home to ext...
Huntington’s disease (HD) is a movement disorder commonly recognized as being neurodegenerative. An increasing number of studies also show primary HD dysfunction in multiple tissues, consistent with the widespread expression of the mutated huntingtin gene. Studies of HD skeletal muscle have revealed membrane hyperexcitability and prolonged action potentials due to Cl – and K + channel dysfunction as well as decreased Ca 2+ rel...
The odds and costs of ambulance attendances associated with heatwave severity in older adults of queensland, AustraliaNARA Subscribed
Ambulance attendances have been increasingly reported to be a sensitive indicator of increased health service utilisations during heatwaves. This study estimated the odds and costs of ambulance attendances associated with heatwave severity (low-intensity, severe, and extreme) in older adults (≥ 65 years) from 1st January 2010 to 31st December 2018 in the State of Queensland, Australia. The findings showed that low-intensity, s...
Commercial sugarcane, Saccharum spp. hybrids, arose from interspecific crossing in the late 1890s and the resultant complex polyploid genome has challenged conventional breeding approaches. The grower- and miller-funded South African Sugarcane Research Institute (SASRI) has a 100-yr history which began by breeding for local agroclimatic regions. Biotechnology for cultivar improvement was introduced in the early 1990s. Collabor...
Effects of vertical mixing on the Lake Michigan food web: an application of a linked end-to-end earth system model frameworkNARA Subscribed
Physical processes may affect ecosystem structure and function through the accumulation, transport, and dispersal of organic and inorganic materials, nutrients, and organisms; they structure physical habitat and can influence predator–prey interactions and trophic production. In the Laurentian Great Lakes, horizontal currents generally dominate, but little is known about the effects of vertical mixing on lake food webs. We dev...
Predicting larval alewife transport in Lake Michigan using hydrodynamic and Lagrangian particle dispersion modelsNARA Subscribed
Several species of fish in large lakes and marine environments have a pelagic larval stage, and are subject to variable transport that can ultimately regulate survival and recruitment success. Alewife, Alosa pseudoharengus , are subject to transport by complex coastal currents during their pelagic larval stage (~ 30 d). We assessed backward‐trajectory simulations, consisting of a Lagrangian particle dispersion model linked to...
Phosphorus (P) stores in gravel‐bed rivers are released for uptake by periphyton when pH levels exceed 8.5. The Tukituki River has low alkalinity water and frequently experiences periphyton blooms, and daytime pH > 9 during summer low‐flows. We measured dissolved reactive P (DRP) and EPC 0 , the water concentration of DRP at which no net release or sorption from the river bed occurs, in sediment samples from the Tukituki River...
Anthropogenic stressors that affect ecological processes in the Laurentian Great Lakes can impact their susceptibility to bioinvasions. Bighead Hypophthalmichthys nobilis and Silver Carp H. molitrix , collectively ‘bigheaded carps’ (BHC), are planktivorous fishes threatening to invade Lake Michigan. While previous studies indicate the lake contains habitat suitable for BHC growth, there is a need to understand how anthropogeni...
Nutrient attenuation in a shallow, gravel‐bed river. II. Spatial and temporal changes in nitrogen dynamics and community metabolismNARA Subscribed
Instream processes alter the concentration and bioavailability of nutrients as they are transported downstream. By relating primary production and periphyton composition to changes in nutrient concentration in a gravel‐bed river this study made inferences about recycling and attenuation. Where dissolved inorganic nitrogen (DIN) was abundant, concentrations decreased linearly with distance but by less than required to meet the...
Dissolved nutrient uptake and metabolism by periphyton in a central North Island gravel‐bed river were investigated using recirculating in‐situ chambers. Dissolved inorganic nitrogen (DIN) uptake was correlated with photosynthesis and chlorophyll but N uptake and carbon fixation were partly de‐coupled indicating storage. Dissolved reactive phosphorus (DRP) uptake was only weakly correlated with photosynthesis. Diatoms and gree...
Potential establishment and ecological effects of bighead and silver carp in a productive embayment of the Laurentian Great LakesNARA Subscribed
Bighead carp H . nobilis and silver carp Hypothalmichthys molitrix (collectively bigheaded carps, BHC) are invasive planktivorous fishes that threaten to enter the Laurentian Great Lakes and disrupt food webs. To assess the likelihood of BHC establishment and their likely effects on the food web of Saginaw Bay, Lake Huron, we developed a multi-species individual-based bioenergetics model that tracks individual bighead and silv...
Northern quahog ( Mercenaria mercenaria ) larval transport and settlement modeled for a temperate estuaryNARA Subscribed
Evaluating marine species' population connectivity through larval transport can provide insight into the reliance of geographically separated areas on each other's recruitment and metapopulation resiliency. Using larval transport modeling, we assessed the significance of different regions in supporting the Narragansett Bay Northern quahog ( Mercenaria mercenaria ) population. We aimed to identify how areas with varying adult q...