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Showing 1 to 20 of 95 for “"Nutrient Loading"”.
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Lake Michigan Tributary Characteristics, Nutrient Loading Trends, and River Plume Dynamics
… tributary outlets, understanding the delivery of nutrients to the nearshore region of the Great Lakes is becoming increasingly important. This study assessed the transport of nutrients from tributaries to the nearshore region of lakes by evaluating the dynamics of tributaries and river plumes. …
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Nutrient loading in the Vaal River over the past two decades
Nutrient loading is negatively affecting South Africa’s freshwater resources and ecosystems. Anthropogenic activities are the leading causes of continuous nutrient loading in the country’s water resources. This study examines the dynamics of nutrient loading in the Vaal River. The objectives are to …
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Responses of a Louisiana oligohaline marsh plant community to nutrient loading and disturbance
… Louisiana, USA, were assessed in response to nutrient loading (3 N x 3 P treatments) and disturbance (both planned lethal disturbance and stochastic tropical storm/hurricane disturbance). Sampling was conducted seasonally from April 2004 to September 2006. Spartina patens and Schoenoplectus …
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Erosion and nutrient loading characteristics of two small agricultural watersheds in Piedmont Virginia
… were collected, analyzed, and used to compute loading rates of sediment, nitrate N, ammonium N, TKN, orthophosphate P, and total P on an event basis. Yields from missed storms were estimated from log-log linear least squares regression rating curves. Seasonal and annual totals of loading rates …
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Dynamics of internal nutrient loading in a eutrophic, polymictic lake (Lake Rotorua, New Zealand)
… This study examines the dynamics of internal nutrient recycling processes in Lake Rotorua, including sediment nutrient release, sedimentation and resuspension, phytoplankton nutrient limitation and the relative importance of internal and external nutrient loads on influencing cyanobacteria …
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Developing rating curves in a small Iowa watershed to evaluate nutrient loading in streams
1 PDF file (xi, 83 pages)
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Hypolimnetic Oxygenation Mitigates the Effects of Nutrient Loading on Water Quality in a Eutrophic Reservoir
… hypoxia and runoff, which will increase nutrient concentrations and degrade water quality. Hypoxic conditions can trigger the release of metals and nutrients from the sediments, i.e., internal loading, while storms can increase external nutrient loading to a waterbody. One potential …
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The Impact of Nutrient Loading from Canada Geese (Branta canadensis) on Water Quality, a Mesocosm Approach
… a settling experiment which suggested that nutrients in goose feces settle to the sediment quickly, prohibiting uptake by phytoplankton which explains the apparent lack of impact of fecal additions on water quality. Since most of the nutrients in goose feces settle to the sediment, it is …
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Effects of nutrient loading in Lutz spruce seedlings (Picea x lutzii Littl.) during nursery rotation and on subsequent growth in field
… spruce (Picea x lutzii Littl.) seedlings were nutrient loaded using four fertilization regimes, receiving in total 0, 7.8, 22.2 and 31.4 g N/m2 over a period of eight weeks (6th august – 27th September) to investigate the effects on biomass allocation, frost hardiness, root growth capacity and …
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Modelling temporal dynamics of discharge and nutrient loading from a mixed land use catchment, and interactions with a eutrophic, temperate lake under climate change
… changes in catchment water discharge and nutrient loads is critical for eutrophication assessment and sustainable management of receiving environments. Anthropogenic activities have increased nutrient export from terrestrial systems to lakes, where they may lead to eutrophication. Impacts …
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The Effects of Nutrient Concentrations on Macroinvertebrate Distributions in Georgia
<p>Nutrients are considered the second largest nonpoint source pollutant in Georgia's running water ecosystems. Nutrients can naturally occur in low amounts and are typically increased in streams as a result of industry, agriculture, silviculture, and urbanization. In large amounts, nutrients can …
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Using Benthic Indicator Species and Community Gradients to Optimize Restoration in the Arid, Endorheic Walker River Watershed, Western USA
… community gradient caused by anthropogenic nutrient loading may constrain restoration effectiveness in some parts of the watershed. Restoration activities should improve water quality conditions and initially target areas of the watershed less affected by nutrient loading. Results also …
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Using SLEUTH Land Cover Predictions to Estimate Changes in Runoff Quality and Quantity in the Delmarva Peninsula
… in water quality were calculated based on nutrient loading rates for sediment, phosphorus, and nitrogen. These nutrient loading rates correspond to different land uses within different county segments in the peninsula. The expected changes in water quantity were quantified using the United …
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Quantifying groundwater discharge using thermal imagery and conventional groundwater exploration techniques for estimating the nitrogen loading to a meso-scale inland estuary
… of a study to evaluate groundwater inflow and nutrient loadings to the Great Bay Estuary, New Hampshire. The evaluation of inflow was accomplished independently by two methods: one, used thermal imagery, and the other, piezometric mapping. The thermal imagery method assessed groundwater that …
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Nutrient Distribution Effects from Freshwater Discharge at Franklin Lock and Dam (S-79) in 2005 and 2006 on the Caloosahatchee Estuary and San Carlos Bay, Fort Myers, Florida
Nutrient distribution correlates with discharge of freshwater from Franklin Lock and Dam structure (S-79) by delivery into the Caloosahatchee Estuary (CE) and out of this area, including the surrounding San Carlos Bay (SCB) and adjacent West Florida Shelf. This study analyzed the temporal and …
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Assessing long-term changes in chironomid assemblages linked to past fluctuations in Leach’s Storm-Petrel populations on islands in the Western Atlantic Ocean
Nutrient loading is an important factor that can indirectly deplete dissolved oxygen concentrations in lakes. In environments where seabirds nest and breed, guano is a prominent source of nutrients that can eutrophy waterbodies. Such external nutrient inputs may deplete bottom-water oxygen, …
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The Impacts of External Nutrient Sources on Marine Phytoplankton in an Eastern Shore Sea-Side Estuary
… of this research is that increases in external nutrient loading into Greens Creek will not result in an increase in primary production. The reasons behind this are due to the light limitation of photosynthesis and high tidal exchange rates, removing phytoplankton, in this creek system.</p> …
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The role of water column and benthic communities in the spatial and temporal production and uptake of nutrients in controlling the trophic status of the Knysna River Estuary, South Africa
… stations. It estimates the contribution to these nutrients from rivers, storm drains and rainfall entering the estuary during this year by monitoring concentration and flow in these source waters. Seasonal, tidal and post-flood patterns of nutrient concentration in the water column are assessed with …
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Aquaculture and pollution studies of an Australian fish: silver perch, Bidyanus bidyanus (Mitchell 1838) (Teraponidae)
… grown zooplankton, and quantifies solid and nutrient load from rearing of silver perch at different temperatures. The present study demonstrated that silver perch can grow significantly faster at a temperature close to it's optimum. It also show that sewage grown zooplankton was an …
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